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Scott B. Hogle February 8th 04 11:34 PM

Suggestions for replacing 5.7 V-8 Cracked Block
 
As the subject line states, I'm interested in some suggestions for replacing
the cracked 5.7 liter V-8 block in my 1997 Bayliner Capri.

I failed to take the precaution of removing the block drain plugs before a
cold-snap hit the Seattle area - my fault = my repair bill.

I want to minimize the total expense, and I'm not opposed to using used or
re-man parts.

Could I just buy a block and re-use the crankshaft, camshaft, pistions and
bearings?

Would it be smarter just to buy a re-man shortblock and re-use the existing
cylinder heads?

Do I need to get a "Mercruiser" shortblock, or would any GM 5.7 shortblock
work?

Final question, how much should I expect to pay to have a boat repair
facility "Remove and Reinstall" the engine.

Thanks in advance for any ideas.

Have a great week.


SBH



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JR North February 9th 04 01:11 AM

Suggestions for replacing 5.7 V-8 Cracked Block
 
See..if you had sprung for FWC, this would be a non-issue.
Now you get to pay 10X the cost of FWC. My condolences.
JR

"Scott B. Hogle" wrote:

As the subject line states, I'm interested in some suggestions for replacing
the cracked 5.7 liter V-8 block in my 1997 Bayliner Capri.

I failed to take the precaution of removing the block drain plugs before a
cold-snap hit the Seattle area - my fault = my repair bill.

I want to minimize the total expense, and I'm not opposed to using used or
re-man parts.

Could I just buy a block and re-use the crankshaft, camshaft, pistions and
bearings?

Would it be smarter just to buy a re-man shortblock and re-use the existing
cylinder heads?

Do I need to get a "Mercruiser" shortblock, or would any GM 5.7 shortblock
work?

Final question, how much should I expect to pay to have a boat repair
facility "Remove and Reinstall" the engine.

Thanks in advance for any ideas.

Have a great week.

SBH

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Rod McInnis February 9th 04 08:31 PM

Suggestions for replacing 5.7 V-8 Cracked Block
 

"Scott B. Hogle" wrote in message
...


Could I just buy a block and re-use the crankshaft, camshaft, pistions and
bearings?


I would certainly NOT consider reusing bearings! As for the pistons, you
will have to make sure that the cylinder bore matches your old pistons. If
you buy a late model block from a junkyard you will probably be okay, but
there is a good chance that a remanufactured block has been bored out to
clean up the cylinder walls.


Would it be smarter just to buy a re-man shortblock and re-use the

existing
cylinder heads?


I would not reuse 7 year old cylinder heads without at least resurfacing the
valve seats and changing out the stem seals. You need to be careful to make
sure that the heads are an exact match. It is not uncommon for the same
basic engine to be built from two different factories that have slightly
different (and incompatible) components.


Do I need to get a "Mercruiser" shortblock, or would any GM 5.7 shortblock
work?


I am sure that this question will create considerable controversy. There
are those that claim that the "freeze plugs" (even the name of these things
generates controversy) are different on a "marine" engine. The concern is
that the standard steel plugs will rust out too fast in a raw water cooled
engine, especially if it ever sees salt water.


Final question, how much should I expect to pay to have a boat repair
facility "Remove and Reinstall" the engine.


Your best bet would be to call some shops in your area and ask them! I would
expect to pay $75 to $100 an hour per person working. Would you be doing
this just because you don't have a crane that will lift the engine out of
the boat? Two suggestions:

1) have everthing disconnected and the bolts loose so that you simply have
to back the trailer under their hoist, lift it up, pull the trailer out,
back the truck in, then lower down. This wouldn't need to be done at a boat
shop, any shop with an overhead hoist could help you out.

2) Build your own hoist. You can buy a chain hoist for pretty cheap (or
rent one), and then an A-Frame with 4x4s should be strong enough. I would
expect $100 or so would do it. You might also try calling local rental
yards to see if they might have something. I know you can rent standard
engine hoists, but it might not have the height or reach you need to get the
engine out of a boat.


Thanks in advance for any ideas.


Before you do anything..... Check the rotation of the engine! It is
possible that your engine rotates the opposite direction of the standard
automobile engine, which would certainly change your shortblock decision.

Rod McInnis



Scott B. Hogle February 10th 04 12:10 AM

Suggestions for replacing 5.7 V-8 Cracked Block
 
Rod:

Thanks for the reply - great response.

SBH

"Rod McInnis" wrote in message
...

"Scott B. Hogle" wrote in message
...


Could I just buy a block and re-use the crankshaft, camshaft, pistions

and
bearings?


I would certainly NOT consider reusing bearings! As for the pistons, you
will have to make sure that the cylinder bore matches your old pistons.

If
you buy a late model block from a junkyard you will probably be okay, but
there is a good chance that a remanufactured block has been bored out to
clean up the cylinder walls.


Would it be smarter just to buy a re-man shortblock and re-use the

existing
cylinder heads?


I would not reuse 7 year old cylinder heads without at least resurfacing

the
valve seats and changing out the stem seals. You need to be careful to

make
sure that the heads are an exact match. It is not uncommon for the same
basic engine to be built from two different factories that have slightly
different (and incompatible) components.


Do I need to get a "Mercruiser" shortblock, or would any GM 5.7

shortblock
work?


I am sure that this question will create considerable controversy. There
are those that claim that the "freeze plugs" (even the name of these

things
generates controversy) are different on a "marine" engine. The concern is
that the standard steel plugs will rust out too fast in a raw water cooled
engine, especially if it ever sees salt water.


Final question, how much should I expect to pay to have a boat repair
facility "Remove and Reinstall" the engine.


Your best bet would be to call some shops in your area and ask them! I

would
expect to pay $75 to $100 an hour per person working. Would you be doing
this just because you don't have a crane that will lift the engine out of
the boat? Two suggestions:

1) have everthing disconnected and the bolts loose so that you simply have
to back the trailer under their hoist, lift it up, pull the trailer out,
back the truck in, then lower down. This wouldn't need to be done at a

boat
shop, any shop with an overhead hoist could help you out.

2) Build your own hoist. You can buy a chain hoist for pretty cheap (or
rent one), and then an A-Frame with 4x4s should be strong enough. I would
expect $100 or so would do it. You might also try calling local rental
yards to see if they might have something. I know you can rent standard
engine hoists, but it might not have the height or reach you need to get

the
engine out of a boat.


Thanks in advance for any ideas.


Before you do anything..... Check the rotation of the engine! It is
possible that your engine rotates the opposite direction of the standard
automobile engine, which would certainly change your shortblock decision.

Rod McInnis





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Lawrence James February 10th 04 01:42 AM

Suggestions for replacing 5.7 V-8 Cracked Block
 
Counter rotation engines have not been built for a while and certainly would
not be in a late model bayliner single engine boat.

"Rod McInnis" wrote in message
...

"Scott B. Hogle" wrote in message
...


Could I just buy a block and re-use the crankshaft, camshaft, pistions

and
bearings?


I would certainly NOT consider reusing bearings! As for the pistons, you
will have to make sure that the cylinder bore matches your old pistons.

If
you buy a late model block from a junkyard you will probably be okay, but
there is a good chance that a remanufactured block has been bored out to
clean up the cylinder walls.


Would it be smarter just to buy a re-man shortblock and re-use the

existing
cylinder heads?


I would not reuse 7 year old cylinder heads without at least resurfacing

the
valve seats and changing out the stem seals. You need to be careful to

make
sure that the heads are an exact match. It is not uncommon for the same
basic engine to be built from two different factories that have slightly
different (and incompatible) components.


Do I need to get a "Mercruiser" shortblock, or would any GM 5.7

shortblock
work?


I am sure that this question will create considerable controversy. There
are those that claim that the "freeze plugs" (even the name of these

things
generates controversy) are different on a "marine" engine. The concern is
that the standard steel plugs will rust out too fast in a raw water cooled
engine, especially if it ever sees salt water.


Final question, how much should I expect to pay to have a boat repair
facility "Remove and Reinstall" the engine.


Your best bet would be to call some shops in your area and ask them! I

would
expect to pay $75 to $100 an hour per person working. Would you be doing
this just because you don't have a crane that will lift the engine out of
the boat? Two suggestions:

1) have everthing disconnected and the bolts loose so that you simply have
to back the trailer under their hoist, lift it up, pull the trailer out,
back the truck in, then lower down. This wouldn't need to be done at a

boat
shop, any shop with an overhead hoist could help you out.

2) Build your own hoist. You can buy a chain hoist for pretty cheap (or
rent one), and then an A-Frame with 4x4s should be strong enough. I would
expect $100 or so would do it. You might also try calling local rental
yards to see if they might have something. I know you can rent standard
engine hoists, but it might not have the height or reach you need to get

the
engine out of a boat.


Thanks in advance for any ideas.


Before you do anything..... Check the rotation of the engine! It is
possible that your engine rotates the opposite direction of the standard
automobile engine, which would certainly change your shortblock decision.

Rod McInnis





habbi February 10th 04 12:27 PM

Suggestions for replacing 5.7 V-8 Cracked Block
 
I have heard that marine blocks have brass freeze plugs were as automotive
simply have steel ones, in raw water cooled especially sal****er this would
be bad.
"Scott B. Hogle" wrote in message
...
As the subject line states, I'm interested in some suggestions for

replacing
the cracked 5.7 liter V-8 block in my 1997 Bayliner Capri.

I failed to take the precaution of removing the block drain plugs before a
cold-snap hit the Seattle area - my fault = my repair bill.

I want to minimize the total expense, and I'm not opposed to using used or
re-man parts.

Could I just buy a block and re-use the crankshaft, camshaft, pistions and
bearings?

Would it be smarter just to buy a re-man shortblock and re-use the

existing
cylinder heads?

Do I need to get a "Mercruiser" shortblock, or would any GM 5.7 shortblock
work?

Final question, how much should I expect to pay to have a boat repair
facility "Remove and Reinstall" the engine.

Thanks in advance for any ideas.

Have a great week.


SBH




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___
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Rod McInnis February 10th 04 11:52 PM

Suggestions for replacing 5.7 V-8 Cracked Block
 

"Lawrence James" wrote in message
hlink.net...
Counter rotation engines have not been built for a while and certainly

would
not be in a late model bayliner single engine boat.



Define "a while".

Counter rotating engines are standard in just about every twin engine
inboard boat I have seen.

I have owned two different tournament ski boats that used counter rotating
engines.

I agree that it would be unusual in an I/O configuration, but it only takes
a minute to check and can save a tremendous amount of headache and expense
if he happens to have one.

Rod



Lawrence James February 11th 04 01:54 AM

Suggestions for replacing 5.7 V-8 Cracked Block
 
Read his post again. He has a 1997 v8 mercruiser i/o. "A while" is well
before 1997. Merc uses a counter rotating drive instead of a counter
rotating engine in dual i/o situations. He does not have a reverse rotation
engine.

What was the brand and year of manufacture for your ski boats?

"Rod McInnis" wrote in message
...

"Lawrence James" wrote in message
hlink.net...
Counter rotation engines have not been built for a while and certainly

would
not be in a late model bayliner single engine boat.



Define "a while".

Counter rotating engines are standard in just about every twin engine
inboard boat I have seen.

I have owned two different tournament ski boats that used counter rotating
engines.

I agree that it would be unusual in an I/O configuration, but it only

takes
a minute to check and can save a tremendous amount of headache and expense
if he happens to have one.

Rod





Wayne.B February 11th 04 07:10 AM

Suggestions for replacing 5.7 V-8 Cracked Block
 
On Wed, 11 Feb 2004 05:35:54 GMT, WaIIy
wrote:
Counter rotating engines are standard in just about every twin engine
inboard boat I have seen.


================================================== =

I don't know the exact year that counter rotating engines were no
longer being produced but I believe it has been at least ten years or
so.

All newer boats achieve counter rotation in the transmission.


John February 11th 04 05:07 PM

Suggestions for replacing 5.7 V-8 Cracked Block
 
"Scott B. Hogle" wrote in message ...
As the subject line states, I'm interested in some suggestions for replacing
the cracked 5.7 liter V-8 block in my 1997 Bayliner Capri.

I failed to take the precaution of removing the block drain plugs before a
cold-snap hit the Seattle area - my fault = my repair bill.

I want to minimize the total expense, and I'm not opposed to using used or
re-man parts.

Could I just buy a block and re-use the crankshaft, camshaft, pistions and
bearings?

Would it be smarter just to buy a re-man shortblock and re-use the existing
cylinder heads?

Do I need to get a "Mercruiser" shortblock, or would any GM 5.7 shortblock
work?

Final question, how much should I expect to pay to have a boat repair
facility "Remove and Reinstall" the engine.

Thanks in advance for any ideas.

Have a great week.


SBH

__________________________________________________ _____________________________

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The Worlds Uncensored News Source



Have you looked at your insurance policy? You might be covered. It's worth a look.

Scott B. Hogle February 11th 04 07:02 PM

Suggestions for replacing 5.7 V-8 Cracked Block
 
Thanks for the idea.

I was thinking the same thing - I read the policy and "freezing" was one of
the first things they exempted.

I guess they already figured out that stupidity is expensive and didn't want
to participate in the repair expense.

Have a great week.


SBH
"John" wrote in message
om...
"Scott B. Hogle" wrote in message

...
As the subject line states, I'm interested in some suggestions for

replacing
the cracked 5.7 liter V-8 block in my 1997 Bayliner Capri.

I failed to take the precaution of removing the block drain plugs before

a
cold-snap hit the Seattle area - my fault = my repair bill.

I want to minimize the total expense, and I'm not opposed to using used

or
re-man parts.

Could I just buy a block and re-use the crankshaft, camshaft, pistions

and
bearings?

Would it be smarter just to buy a re-man shortblock and re-use the

existing
cylinder heads?

Do I need to get a "Mercruiser" shortblock, or would any GM 5.7

shortblock
work?

Final question, how much should I expect to pay to have a boat repair
facility "Remove and Reinstall" the engine.

Thanks in advance for any ideas.

Have a great week.


SBH


__________________________________________________ __________________________
___
Posted Via Uncensored-News.Com - Accounts Starting At $6.95 -

http://www.uncensored-news.com
The Worlds Uncensored News Source




Have you looked at your insurance policy? You might be covered. It's worth

a look.



__________________________________________________ _____________________________
Posted Via Uncensored-News.Com - Accounts Starting At $6.95 - http://www.uncensored-news.com
The Worlds Uncensored News Source


Scott B. Hogle February 11th 04 07:07 PM

Suggestions for replacing 5.7 V-8 Cracked Block
 
Hey, don't be picking on Rod, I thought his post was very responsive.

I feel bad, I'm the idiot that was too lazy to remove the drain plugs and
poor Rod is catching grief for trying to help me out.

I've concluded that trying to buy a bare block and transfer the crankshaft
and pistons is probably being too cheap - probably better to just buy a
reman shortblock.

Thanks to all for your replies.

Have a great week.


SBH

"WaIIy" wrote in message
...
On Tue, 10 Feb 2004 15:52:51 -0800, "Rod McInnis"
wrote:


"Lawrence James" wrote in message
thlink.net...
Counter rotation engines have not been built for a while and certainly

would
not be in a late model bayliner single engine boat.



Define "a while".

Counter rotating engines are standard in just about every twin engine
inboard boat I have seen.


You must not have seen too many.

I have owned two different tournament ski boats that used counter

rotating
engines.

I agree that it would be unusual in an I/O configuration, but it only

takes
a minute to check and can save a tremendous amount of headache and

expense
if he happens to have one.

Rod





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Rod McInnis February 12th 04 06:55 PM

Suggestions for replacing 5.7 V-8 Cracked Block
 

"Wayne.B" wrote in message


I don't know the exact year that counter rotating engines were no
longer being produced but I believe it has been at least ten years or
so.

All newer boats achieve counter rotation in the transmission.



If your comments were specific towards I/O systems, then you are probably
correct. If you intended this to be a general statement for all inboards,
you are incorrect.

You can go to the Crusader web site, look at the specifications for one of
their engines (
http://www.crusaderengines.com/NewFi...salessheet.PDF
)
and see for yourself that they clearly state their engines are available in
either left hand or right hand rotation.

Considering how easy it is to make the lower unit of an I/O or outboard
reverse the rotation of the prop shaft with respect to the engine rotation I
agree that it would be unlikely that they would utilize a reverse rotation
engine to accomplish counter rotating props. The same does not hold true
for an inboard.

Rod



Rod McInnis February 13th 04 09:10 PM

Suggestions for replacing 5.7 V-8 Cracked Block
 

"WaIIy" wrote in message
...
On Thu, 12 Feb 2004 10:55:30 -0800, "Rod McInnis"




You don't give up easily. Please give some proof to your allegation.


You said: Quote:
"I don't know the exact year that counter rotating engines were no longer
being produced but I believe it has been at least ten years or so."

Unquote.

I took that statement to indicate you were claiming that Right Hand (a.k.a.
counter rotating) engines were no longer made. In my previous message I
provided the link to the website of Crusader, a leading manufacturer of
engines used in twin engine cruisers, that clearly shows that Crusader sells
engines in both Left Hand and Right Hand rotation.

Here is another one, from Pleasure Craft, who is a leading manufacturer of
marine engines used in ski boats:
http://www.pleasurecraft.com/NewFiles/PCMSpecs.PDF

As further proof, consider the specifications for the transmissions. My
favorite, and the one I am intimately familiar with, is the Velvet Drive by
Borg Warner. The one I have actually had apart in my garage was a 71
series. Here it their website:
http://www.simplicity-marine.com/velv71.htm

Note that this transmission is available in 6 different gear ratios: 1.0,
1.52, 1.91, 2.10, 2.57, and 2.92 to 1. Of these, only ONE (1.91) is
available with the output shaft rotating in an opposite direction of the
input shaft. Note that any of these transmissions can be configured for the
input shaft rotating in either direction (a simple matter of rotating the
oil pump on the input shaft 180 degrees).

I submit that if a leading manufacturer of transmissions only offers 1/6th
of their product line in counter rotating output then there would be a
significant number of dual engine boats that achieve counter rotating
propellers by utilizing counter rotating engines.

If links to the manufacturers websites where they are advertising new motors
for sale are not sufficient proof for you, maybe you can tell me what form
of proof you would consider to be acceptable.



I submit that very few boats with twin engines built in the last 15
years have engines that rotate differently.


I currently own a 36' Carver Mariner that has one LH and one RH engine

I used to own a Pro-Am tournament style ski boat that had a right hand
(counter rotating) engine.

There are plenty of boats out there that have Right Hand rotating engines in
them. If you are an expert on Bayliner Capri boats, and such know exactly
what models of engines and outdrives were used, then by all means assure
Scott (the original person who asked the question) that he doesn't need to
bother checking any details about his boat.

For those people who might be reading this thread and considering changing
out the short block, I stand by my original suggestion. It only takes a few
seconds to check to see if the engine turns "right hand" or "left hand". If
you don't run this check, and it turns out that you are one of those few who
have a right hand rotating engine, you are going to be really, really sad
when you get the engine all together and find out its all wrong.

Rod



Lawrence James February 14th 04 02:22 PM

Suggestions for replacing 5.7 V-8 Cracked Block
 
You still have not told us the year of your ski boats or your Carver?

I'm ok with counter rotating engines being around still. My position on
this debate was that you will not find any new, 10 years or less, single
engine boats with them. Particularly i/o ones.

Counter rotation is accomplished with a 'backwards' cam that is driven by a
gear instead or a chain and a backwards starter. A regular short or long
block can be made counter rotating rather easily if you have those pieces.

"Rod McInnis" wrote in message
...

"WaIIy" wrote in message
...
On Thu, 12 Feb 2004 10:55:30 -0800, "Rod McInnis"




You don't give up easily. Please give some proof to your allegation.


You said: Quote:
"I don't know the exact year that counter rotating engines were no longer
being produced but I believe it has been at least ten years or so."

Unquote.

I took that statement to indicate you were claiming that Right Hand

(a.k.a.
counter rotating) engines were no longer made. In my previous message I
provided the link to the website of Crusader, a leading manufacturer of
engines used in twin engine cruisers, that clearly shows that Crusader

sells
engines in both Left Hand and Right Hand rotation.

Here is another one, from Pleasure Craft, who is a leading manufacturer of
marine engines used in ski boats:
http://www.pleasurecraft.com/NewFiles/PCMSpecs.PDF

As further proof, consider the specifications for the transmissions. My
favorite, and the one I am intimately familiar with, is the Velvet Drive

by
Borg Warner. The one I have actually had apart in my garage was a 71
series. Here it their website:
http://www.simplicity-marine.com/velv71.htm

Note that this transmission is available in 6 different gear ratios: 1.0,
1.52, 1.91, 2.10, 2.57, and 2.92 to 1. Of these, only ONE (1.91) is
available with the output shaft rotating in an opposite direction of the
input shaft. Note that any of these transmissions can be configured for

the
input shaft rotating in either direction (a simple matter of rotating the
oil pump on the input shaft 180 degrees).

I submit that if a leading manufacturer of transmissions only offers 1/6th
of their product line in counter rotating output then there would be a
significant number of dual engine boats that achieve counter rotating
propellers by utilizing counter rotating engines.

If links to the manufacturers websites where they are advertising new

motors
for sale are not sufficient proof for you, maybe you can tell me what form
of proof you would consider to be acceptable.



I submit that very few boats with twin engines built in the last 15
years have engines that rotate differently.


I currently own a 36' Carver Mariner that has one LH and one RH engine

I used to own a Pro-Am tournament style ski boat that had a right hand
(counter rotating) engine.

There are plenty of boats out there that have Right Hand rotating engines

in
them. If you are an expert on Bayliner Capri boats, and such know exactly
what models of engines and outdrives were used, then by all means assure
Scott (the original person who asked the question) that he doesn't need to
bother checking any details about his boat.

For those people who might be reading this thread and considering changing
out the short block, I stand by my original suggestion. It only takes a

few
seconds to check to see if the engine turns "right hand" or "left hand".

If
you don't run this check, and it turns out that you are one of those few

who
have a right hand rotating engine, you are going to be really, really sad
when you get the engine all together and find out its all wrong.

Rod





tstefanski^^@ameritech.net February 17th 04 12:10 AM

Suggestions for replacing 5.7 V-8 Cracked Block
 
Having just done a complete rebuild / balance / blueprint on a friend's 5.7L
Crusaders, I can add one more item: The pistons have to be mounted on the
rods pointing to the back of the engine on the counter-rotating unit. This
is because the pistons are slightly asymetrical, with more material and a
stronger skirt on the side of the piston subject to side-thrust when the
cylinder fires. Your engine will not live very long if you do not do this.
Terry

Lawrence James February 17th 04 03:30 PM

Suggestions for replacing 5.7 V-8 Cracked Block
 
That's interesting. I wonder what you are supposed to do with pistons that
have flycuts directly under the valves for extra valve clearance.

wrote in message
.com...
Having just done a complete rebuild / balance / blueprint on a friend's

5.7L
Crusaders, I can add one more item: The pistons have to be mounted on the
rods pointing to the back of the engine on the counter-rotating unit.

This
is because the pistons are slightly asymetrical, with more material and a
stronger skirt on the side of the piston subject to side-thrust when the
cylinder fires. Your engine will not live very long if you do not do

this.
Terry




Rod McInnis February 17th 04 08:29 PM

Suggestions for replacing 5.7 V-8 Cracked Block
 

"Lawrence James" wrote in message
ink.net...


I'm ok with counter rotating engines being around still. My position on
this debate was that you will not find any new, 10 years or less, single
engine boats with them.


Why do you say that?

With the gain in popularity of "wakeboarding" the majority of single engine
inboards have evolved into boats that are designed to create bigger wakes
rather than trying to minimize them. But there are still people who slalom
ski, and while they aren't as popular as they once were they still make
these boats. I would expect that whatever the reason they liked to use RH
engines on these boats 10 years ago still exists today.

Particularly i/o ones.


I agree with that it isn't likely that an I/O would use a counter rotating
engine.


Counter rotation is accomplished with a 'backwards' cam that is driven by

a
gear instead or a chain


No, the cam connects to the crankshaft the same way. The counter rotating
engine (Pleasurecraft) that I have taken apart were based on the Ford V8
block, which used a standard timing chain. The cam was simply ground
differently. The distributor rotated the opposite direction, so I would
assume that the oil pump (which is driven off the bottom of the distributer
drive) is also different.

I believe that the Crusaders use an opposite pitch on the worm gear between
the camshaft and distributer drive, and thus their distributers turn the
same direction for LH and RH engines.

and a backwards starter.


Yep, the starter has to rotate the opposite direction. My first
introduction to counter rotating engine was when my dad replaced the starter
on his counter rotating engine with a standard starter. It took us two days
to figure out why that damn engine wouldn't run!

I have heard (but never personally seen) of installations where a standard
starter was used but mounted on the opposite side, which would require a
different bell housing.

A regular short or long
block can be made counter rotating rather easily if you have those pieces.


I think the water circulating pump might be different as well

Rod



Lawrence James February 17th 04 09:48 PM

Suggestions for replacing 5.7 V-8 Cracked Block
 
The guy does not have a reverse rotation engine in his single engine merc
i/o boat.

I'll repeat my question. What year were your ski boats?

"Rod McInnis" wrote in message
...

"Lawrence James" wrote in message
ink.net...


I'm ok with counter rotating engines being around still. My position on
this debate was that you will not find any new, 10 years or less, single
engine boats with them.


Why do you say that?

With the gain in popularity of "wakeboarding" the majority of single

engine
inboards have evolved into boats that are designed to create bigger wakes
rather than trying to minimize them. But there are still people who slalom
ski, and while they aren't as popular as they once were they still make
these boats. I would expect that whatever the reason they liked to use RH
engines on these boats 10 years ago still exists today.

Particularly i/o ones.


I agree with that it isn't likely that an I/O would use a counter rotating
engine.


Counter rotation is accomplished with a 'backwards' cam that is driven

by
a
gear instead or a chain


No, the cam connects to the crankshaft the same way. The counter rotating
engine (Pleasurecraft) that I have taken apart were based on the Ford V8
block, which used a standard timing chain. The cam was simply ground
differently. The distributor rotated the opposite direction, so I would
assume that the oil pump (which is driven off the bottom of the

distributer
drive) is also different.

I believe that the Crusaders use an opposite pitch on the worm gear

between
the camshaft and distributer drive, and thus their distributers turn the
same direction for LH and RH engines.

and a backwards starter.


Yep, the starter has to rotate the opposite direction. My first
introduction to counter rotating engine was when my dad replaced the

starter
on his counter rotating engine with a standard starter. It took us two

days
to figure out why that damn engine wouldn't run!

I have heard (but never personally seen) of installations where a standard
starter was used but mounted on the opposite side, which would require a
different bell housing.

A regular short or long
block can be made counter rotating rather easily if you have those

pieces.

I think the water circulating pump might be different as well

Rod






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