5.7 Mercruiser water in oil
 

Ok i bought the boat with 5.7 mercruiser 1990 350 cdi . It has water
oil mix on the oil stik and it is not starting where shuld I start
looking. I did notice small water driping on the sides of manifolds

5.7 Mercruiser water in oil
 

On Thu, 28 Aug 2008 08:40:23 -0700 (PDT), wrote:

Ok i bought the boat with 5.7 mercruiser 1990 350 cdi . It has water
oil mix on the oil stik and it is not starting where shuld I start
looking. I did notice small water driping on the sides of manifolds

My brother had the same thing happen - it was head gaskets, but he
changed the heads and gaskets at the same time.

5.7 Mercruiser water in oil
 

"Short Wave Sportfishing" wrote in message
...
On Thu, 28 Aug 2008 08:40:23 -0700 (PDT), wrote:

Ok i bought the boat with 5.7 mercruiser 1990 350 cdi . It has water
oil mix on the oil stik and it is not starting where shuld I start
looking. I did notice small water driping on the sides of manifolds

My brother had the same thing happen - it was head gaskets, but he
changed the heads and gaskets at the same time.

If it overheated the heads warp on a Chevy. But since manifolds are
dripping, I would check for a hole in the exhaust manifolds.

5.7 Mercruiser water in oil
 

wrote in message
...
Ok i bought the boat with 5.7 mercruiser 1990 350 cdi . It has water
oil mix on the oil stik and it is not starting where shuld I start
looking. I did notice small water driping on the sides of manifolds

Besides bad head gaskets there are a couple other common causes of this on
boats. If it has not run since winter and you are in a climate that has
freezing weather it could be a cracked block. Small blocks are pretty weak
on the inside of the block adjacent to the valve push rods. If the exhaust
manifolds are old they may be leaking into the cylinders. Then the sitting
water in the cylinder(s) will make it's way down past the rings into the
oil.

5.7 Mercruiser water in oil
 

On Aug 28, 10:40*am, wrote:
Ok i bought the boat with 5.7 mercruiser 1990 350 cdi . It has water
oil mix on the oil stik and it is not starting where shuld I start
looking. *I did notice small water driping on the sides of manifolds

Today I removed intake and find out that the head is cracked. I will
take apart the rest of the engine and check if anything els is bad .
Do you guys know where can I buy used parts for 5.7 V8 1990 350 cdi

5.7 Mercruiser water in oil
 

wrote in message
...
On Aug 28, 10:40 am, wrote:
Ok i bought the boat with 5.7 mercruiser 1990 350 cdi . It has water
oil mix on the oil stik and it is not starting where shuld I start
looking. I did notice small water driping on the sides of manifolds

Today I removed intake and find out that the head is cracked. I will
take apart the rest of the engine and check if anything els is bad .
Do you guys know where can I buy used parts for 5.7 V8 1990 350 cdi

Any wrecking yard. Take the head with you so you can get a matching head.

5.7 Mercruiser water in oil
 

On Aug 30, 12:42*am, "CalifBill" wrote:
wrote in message

...
On Aug 28, 10:40 am, wrote:

Ok i bought the boat with 5.7 mercruiser 1990 350 cdi . It has water
oil mix on the oil stik and it is not starting where shuld I start
looking. I did notice small water driping on the sides of manifolds

Today I removed intake and find out that the head is cracked. I will
take apart the rest of the engine and check if anything els is bad .
Do you guys know where can I buy used parts for *5.7 V8 1990 350 cdi

Any wrecking yard. *Take the head with you so you can get a matching head.

Can you please tell me if is going to fit from GM cars and wich
ones . What do I have to look for when I'm maching them

5.7 Mercruiser water in oil
 

On Aug 30, 1:09*am, wrote:
On Aug 30, 12:42*am, "CalifBill" wrote:

wrote in message

...
On Aug 28, 10:40 am, wrote:

Ok i bought the boat with 5.7 mercruiser 1990 350 cdi . It has water
oil mix on the oil stik and it is not starting where shuld I start
looking. I did notice small water driping on the sides of manifolds

Today I removed intake and find out that the head is cracked. I will
take apart the rest of the engine and check if anything els is bad .
Do you guys know where can I buy used parts for *5.7 V8 1990 350 cdi

Any wrecking yard. *Take the head with you so you can get a matching head.

Can you please tell me *if is going to fit from GM cars and wich
ones . What do I have to look for when I'm maching them

Today I discovered cracked block too so I have cracked blok and head.
I will need new engine what is the good place for used engines

5.7 Mercruiser water in oil
 

5.7 Mercruiser water in oil
 

5.7 Mercruiser water in oil
 

On Aug 31, 11:19*am, Vic Smith
wrote:
On Sun, 31 Aug 2008 07:03:29 -0400, jim wrote:
I'd go with a complete OEM engine. And the EFI option is worth the few
extra bucks. Putting old accessory parts into a junkyard engine isn't
going to buy you reliability or longevity. Putting new accessory parts
into a junkyard engine isn't going to save you much money vs a complete
new OEM engine.

GM crate engine cost was pretty low last I looked. maybe $2200 for a
350cid. *Paid a bit more for an Olds - 305 I think - to replace my
son's smoker.
Don't know how that will translate after "marinization."
I agree with you. *The hassle of old stuff past its time isn't worth
the cost difference.
You hear that ticking with an old engine and your heart drops thinking
about pulling heads. *With a newer engine you just find the exhaust
leak. *

--Vic

Where can I find new engine and and what is the labor cost of
instaling it

5.7 Mercruiser water in oil
 

On Sun, 31 Aug 2008 13:28:32 -0700 (PDT), wrote:

On Aug 31, 11:19?am, Vic Smith
wrote:
On Sun, 31 Aug 2008 07:03:29 -0400, jim wrote:
I'd go with a complete OEM engine. And the EFI option is worth the few
extra bucks. Putting old accessory parts into a junkyard engine isn't
going to buy you reliability or longevity. Putting new accessory parts
into a junkyard engine isn't going to save you much money vs a complete
new OEM engine.

GM crate engine cost was pretty low last I looked. maybe $2200 for a
350cid. ?Paid a bit more for an Olds - 305 I think - to replace my
son's smoker.
Don't know how that will translate after "marinization."
I agree with you. ?The hassle of old stuff past its time isn't worth
the cost difference.
You hear that ticking with an old engine and your heart drops thinking
about pulling heads. ?With a newer engine you just find the exhaust
leak. ?

--Vic

Where can I find new engine and and what is the labor cost of
instaling it

Sorry if I didn't make clear I was talking about cars.
You mentioned 5.7 which is a 350.
Wait for the boat guys to get in their suggestions.
There's the "marinization" issue and I know nothing about that, or
install costs.

--Vic

5.7 Mercruiser water in oil
 

5.7 Mercruiser water in oil
 

"Vic Smith" wrote in message
...
On Sun, 31 Aug 2008 13:28:32 -0700 (PDT), wrote:

On Aug 31, 11:19?am, Vic Smith
wrote:
On Sun, 31 Aug 2008 07:03:29 -0400, jim wrote:
I'd go with a complete OEM engine. And the EFI option is worth the few
extra bucks. Putting old accessory parts into a junkyard engine isn't
going to buy you reliability or longevity. Putting new accessory parts
into a junkyard engine isn't going to save you much money vs a complete
new OEM engine.

GM crate engine cost was pretty low last I looked. maybe $2200 for a
350cid. ?Paid a bit more for an Olds - 305 I think - to replace my
son's smoker.
Don't know how that will translate after "marinization."
I agree with you. ?The hassle of old stuff past its time isn't worth
the cost difference.
You hear that ticking with an old engine and your heart drops thinking
about pulling heads. ?With a newer engine you just find the exhaust
leak. ?

--Vic

Where can I find new engine and and what is the labor cost of
instaling it

Sorry if I didn't make clear I was talking about cars.
You mentioned 5.7 which is a 350.
Wait for the boat guys to get in their suggestions.
There's the "marinization" issue and I know nothing about that, or
install costs.

--Vic

Depends on the hours and condition of the current motor. Lots of 1990 cars
still running fine. How many hours on the motor. Just change the head.
Take it with you to a wrecking yard and let them match it.

5.7 Mercruiser water in oil
 

CalifBill wrote:
"Vic Smith" wrote in message
...
On Sun, 31 Aug 2008 13:28:32 -0700 (PDT), wrote:

On Aug 31, 11:19?am, Vic Smith
wrote:
On Sun, 31 Aug 2008 07:03:29 -0400, jim wrote:
I'd go with a complete OEM engine. And the EFI option is worth the few
extra bucks. Putting old accessory parts into a junkyard engine isn't
going to buy you reliability or longevity. Putting new accessory parts
into a junkyard engine isn't going to save you much money vs a complete
new OEM engine.
GM crate engine cost was pretty low last I looked. maybe $2200 for a
350cid. ?Paid a bit more for an Olds - 305 I think - to replace my
son's smoker.
Don't know how that will translate after "marinization."
I agree with you. ?The hassle of old stuff past its time isn't worth
the cost difference.
You hear that ticking with an old engine and your heart drops thinking
about pulling heads. ?With a newer engine you just find the exhaust
leak. ?

--Vic
Where can I find new engine and and what is the labor cost of
instaling it
Sorry if I didn't make clear I was talking about cars.
You mentioned 5.7 which is a 350.
Wait for the boat guys to get in their suggestions.
There's the "marinization" issue and I know nothing about that, or
install costs.

--Vic

Depends on the hours and condition of the current motor. Lots of 1990 cars
still running fine. How many hours on the motor. Just change the head.
Take it with you to a wrecking yard and let them match it.


What about the cracked block?

5.7 Mercruiser water in oil
 

"jim" wrote in message
...
CalifBill wrote:
"Vic Smith" wrote in message
...
On Sun, 31 Aug 2008 13:28:32 -0700 (PDT), wrote:

On Aug 31, 11:19?am, Vic Smith
wrote:
On Sun, 31 Aug 2008 07:03:29 -0400, jim wrote:
I'd go with a complete OEM engine. And the EFI option is worth the
few
extra bucks. Putting old accessory parts into a junkyard engine isn't
going to buy you reliability or longevity. Putting new accessory
parts
into a junkyard engine isn't going to save you much money vs a
complete
new OEM engine.
GM crate engine cost was pretty low last I looked. maybe $2200 for a
350cid. ?Paid a bit more for an Olds - 305 I think - to replace my
son's smoker.
Don't know how that will translate after "marinization."
I agree with you. ?The hassle of old stuff past its time isn't worth
the cost difference.
You hear that ticking with an old engine and your heart drops thinking
about pulling heads. ?With a newer engine you just find the exhaust
leak. ?

--Vic
Where can I find new engine and and what is the labor cost of
instaling it
Sorry if I didn't make clear I was talking about cars.
You mentioned 5.7 which is a 350.
Wait for the boat guys to get in their suggestions.
There's the "marinization" issue and I know nothing about that, or
install costs.

--Vic

Depends on the hours and condition of the current motor. Lots of 1990
cars still running fine. How many hours on the motor. Just change the
head. Take it with you to a wrecking yard and let them match it.
What about the cracked block?

Last I saw, was just a cracked head.

5.7 Mercruiser water in oil
 

On Sep 5, 9:57*pm, "CalifBill" wrote:
"jim" wrote in message

...





CalifBill wrote:
"Vic Smith" wrote in message
. ..
On Sun, 31 Aug 2008 13:28:32 -0700 (PDT), wrote:

On Aug 31, 11:19?am, Vic Smith
wrote:
On Sun, 31 Aug 2008 07:03:29 -0400, jim wrote:
I'd go with a complete OEM engine. And the EFI option is worth the
few
extra bucks. Putting old accessory parts into a junkyard engine isn't
going to buy you reliability or longevity. Putting new accessory
parts
into a junkyard engine isn't going to save you much money vs a
complete
new OEM engine.
GM crate engine cost was pretty low last I looked. maybe $2200 for a
350cid. ?Paid a bit more for an Olds - 305 I think - to replace my
son's smoker.
Don't know how that will translate after "marinization."
I agree with you. ?The hassle of old stuff past its time isn't worth
the cost difference.
You hear that ticking with an old engine and your heart drops thinking
about pulling heads. ?With a newer engine you just find the exhaust
leak. ?

--Vic
Where can I find new engine and *and what is the labor cost of
instaling it
Sorry if I didn't make clear I was talking about cars.
You mentioned 5.7 which is a 350.
Wait for the boat guys to get in their suggestions.
There's the "marinization" issue and I know nothing about that, or
install costs.

--Vic

Depends on the hours and condition of the current motor. *Lots of 1990
cars still running fine. *How many hours on the motor. *Just change the
head. Take it with you to a wrecking yard and let them match it.
What about the cracked block?

Last I saw, was just a cracked head.- Hide quoted text -

- Show quoted text -

Cracked head and block. Likely not winterized and froze.

A long block such as a gm crate engine is an ok solution. The only
critical marinization is the replacement of the freeze plugs with
brass ones. Various vendors have rebuilt long blocks at reasonable
prices as well.

I'd pass on the complete merc replacement engine. The 5.7 tend to be
well over $5k and that's just too much investment in a boat that old.

If you're looking at other details the marine engines have a slightly
different cam. Closer to a truck cam but with less overlap. Avoid
the hi-performance crate engines unless the boat is light. They
sacrifice some mid-range for more hp at the top end. That's a problem
for boats, particularly heavy ones where that mid-ramge power is
needed to get on plane and for crusing. I would go with a new water
pump and thermostat. but the rest of the bolt on stuff is probably
ok. Boats don't typically get the hours on them that cars do so
starters and alternators tend to be fine.

No matter what solution you use for the engine you need to take a good
look at the exhaust manifolds and risers. Unfortunately you can
easily spend over another $500 to replace these.

5.7 Mercruiser water in oil
 

On Sat, 6 Sep 2008 05:29:54 -0700 (PDT), wrote:

Cracked head and block. Likely not winterized and froze

I bought a used sterndrive with a glycol cooled engine. I don't know
how common that is in places like Iowa where there is no salt water.
At least it won't freeze.

Casady