Question about trim tabs
 

On Mar 30, 10:05*pm, Wayne.B wrote:
On Tue, 30 Mar 2010 19:42:20 -0400, "Eisboch" wrote:
Each one. *As the Bennett site suggests, the width or span is more important
than
how far out they come out from the transom (chord).

Bennett is a great outfit to do business with also. *They stand behind
their products and are easy to reach on the phone for advice.

I have the hydralic ones and when I needed to repair my hydralic pump
bennett wouldn't sell me parts. They wanted me to buy a new pump. I
ended up fixing it without them. I might try the electric ones if I
had to do it again but they may have their own flaws. I have had the
bennett hydralic tabs for about 10 years and the one time I had to fix
the pump was not really their fault, it got water in it.

Question about trim tabs
 

On Mar 31, 11:56*am, jamesgangnc wrote:
On Mar 30, 10:05*pm, Wayne.B wrote:

On Tue, 30 Mar 2010 19:42:20 -0400, "Eisboch" wrote:
Each one. *As the Bennett site suggests, the width or span is more important
than
how far out they come out from the transom (chord).

Bennett is a great outfit to do business with also. *They stand behind
their products and are easy to reach on the phone for advice.

I have the hydralic ones and when I needed to repair my hydralic pump
bennett wouldn't sell me parts. *They wanted me to buy a new pump. *I
ended up fixing it without them. *I might try the electric ones if I
had to do it again but they may have their own flaws. *I have had the
bennett hydralic tabs for about 10 years and the one time I had to fix
the pump was not really their fault, it got water in it.

Can the pump be mounted up high or up towards the front to keep it
from water logging?

Question about trim tabs
 

On Mar 31, 3:16*pm, Tim wrote:
On Mar 31, 11:56*am, jamesgangnc wrote:





On Mar 30, 10:05*pm, Wayne.B wrote:

On Tue, 30 Mar 2010 19:42:20 -0400, "Eisboch" wrote:
Each one. *As the Bennett site suggests, the width or span is more important
than
how far out they come out from the transom (chord).

Bennett is a great outfit to do business with also. *They stand behind
their products and are easy to reach on the phone for advice.

I have the hydralic ones and when I needed to repair my hydralic pump
bennett wouldn't sell me parts. *They wanted me to buy a new pump. *I
ended up fixing it without them. *I might try the electric ones if I
had to do it again but they may have their own flaws. *I have had the
bennett hydralic tabs for about 10 years and the one time I had to fix
the pump was not really their fault, it got water in it.

Can the pump be mounted up high or up towards the front to keep it
from water logging?- Hide quoted text -

- Show quoted text -

Yes, you can pretty much mount the pump anywhere as long as it's
upright. They give you plenty of line as well. Installation was
straight forward. Just make 1000% certain you have picked the right
location before you start drilling thru your transom. Cause with the
bennett hydralic tabs the lines go into the top of the trim tab
cylinders from inside the transom. Take a close look at the cylinders
and figure out where they will go on your transom to make sure that
you can reach the tops of them from inside. Bennett has all the
measurements on their site. Back when I got them they also had 2
different length cylinders. I was able to use the shorter cylinders.
It is a single line system, not dual like the outdrive. The tabs are
lowered by pumping fluid out to them. They are raised by reversing
the pump and "sucking" the fluid out. You can not raise and lower at
the same time but you can only raise or lower one tab if you want.

I left our runabout in the water over night and I did not have a float
switch bilge pump. We had a really heavy rain and I ended up with a
lot of water in the rear. Was a real mess as I had water in the
engine oil and water in the outdrive hydralics as well. Took all day
to get it right. The outdrive pump motor sticks straight up from the
resevoir so the motor part of it was not submerged. The bennett pump
is a smaller pump that is horizontal on top of a little resevoir. So
the electrical motor in it got submerged. I didn't really know it had
a problem till a month or so later when it stopped working reliably
and I took it apart to find a lot of corrosion in the motor. So it
was not bennetts fault by any means. I should have disassembled the
bennett pump right away.

Question about trim tabs
 

On Mar 31, 1:43*pm, jamesgangnc wrote:
*The bennett pump
is a smaller pump that is horizontal on top of a little resevoir. *So
the electrical motor in it got submerged. *I didn't really know it had
a problem till a month or so later when it stopped working reliably
and I took it apart to find a lot of corrosion in the motor. *So it
was not bennetts fault by any means. *I should have disassembled the
bennett pump right away.- Hide quoted text -

- Show quoted text -

I used to see that a lot on Johnson/Evinrude power trim pumps. Which
were externally mounted and prone to water logging. People would park
their boat for the winter then wonder why the trim motor wouldn't work
the next year, and regardless on how you tried to clean them out,
those old prestolite motors were nye-on to worthless by then. Nothing
that money couldn't cure.

Question about trim tabs
 

Tim wrote:
On Mar 30, 6:32 pm, wrote:

Tim wrote:

On Mar 30, 8:42 am, wrote:


wrote in message


....


There's an old saying at a local high performance engine shop that
says "Speed costs money, how fast do you want to go?" And I know the
old rule usually applies "you get what you pay for? Well for the few
times I've taken my marquis out it's interesting to get it up on
plane. first , if you ease the throttle, you'll do a wheelie to where
you think the boat will flip over backwards and you do little but plow
water , so you have to nail it and you still get an extreme bow rise
but it settles down and know you're going, but you still have to keep
the RPM up above 2800 or the boat wants to drag back. So I'm
investigating trim tabs. There's all kinds on the market anywhere from
sophisticated hydraulic and independently controlled units ranging up
to around $500.00 all the way down to the spring loaded sets that that
are available for around a hundred bucks. I'm sure that trim tabs
would help the boating experience, but I'm really wondering how much
trim control I'm actually needing. to make a more efficient ride and
run. I'm constantly accused of being 'tight' but I'm not THAT tight,
because I know that money spent in the right direction will save in
fuel and ride in the longer run. But over kill is still overkill. This
is a 23 ft. V-hull Marquis with a 350 GM engine and not some 3000 hp.
40 ft. Fountain off shore racer. So, anyone have any suggestions?


Tim,


My father had hydraulic trim tabs on his 22 ft. Apollo back in the day, they
were very useful for the application that you are referring. They are also
very helpful if you have an offset in the load, you can equalize easily with
the trim tabs.


For little investment, you might also try one of the following first. I
have no experience on larger boats, however I know they work well on smaller
run abouts in the 16 to 18 ft. range. There are several other manufactures
on the market besides this one.


http://www.davisnet.com/MARINE/produ...asp?pnum=00448


JT- Hide quoted text -


- Show quoted text -


Thanks JT. I do have a fin on the lower end, though

Forget the spring -loaded tabs. They will always add drag.

If your fin is anything like the one I had on my old bowrider, it has an
odd effect on the cornering. I took mine off.

Try this: Don't ease the throttle, open it up. Just as the bow begins
to lower, back off on the throttle until you have it where you want to
be. If that still takes too long, you can play with prop size, pitch,
cupping and venting. When you get your desired result, you will may
lose some top end speed. Prop selection is a PITA for most boat owners..

Larry, that's what I do with my smaller boat and it hole shots quite
well. The big tub? it drags and plows until it decides to get up and
running. I dont' know, maybe I'm asking too much of the take off
performance on the big one, but I don't think so. Something is amiss
(maybe me!) and I'll have to experiment around with it for a while I
suppose.

Are the carbs clean?

Question about trim tabs
 

On Mar 31, 7:11*pm, Larry wrote:
Tim wrote:
On Mar 30, 6:32 pm, *wrote:

Tim wrote:

On Mar 30, 8:42 am, * *wrote:

* *wrote in message

.....

There's an old saying at a local high performance engine shop that
says "Speed costs money, how fast do you want to go?" And I know the
old rule usually applies "you get what you pay for? Well for the few
times I've taken my marquis out it's interesting to get it up on
plane. first , if you ease the throttle, you'll do a wheelie to where
you think the boat will flip over backwards and you do little but plow
water , so you have to nail it and you still get an extreme bow rise
but it settles down and know you're going, but you still have to keep
the RPM up above 2800 or the boat wants to drag back. So I'm
investigating trim tabs. There's all kinds on the market anywhere from
sophisticated hydraulic and independently controlled units ranging up
to around $500.00 all the way down to the spring loaded sets that that
are available for around a hundred bucks. I'm sure that trim tabs
would help the boating experience, but *I'm really wondering how much
trim control I'm actually needing. to make a more efficient ride and
run. I'm constantly accused of being 'tight' but I'm not THAT tight,
because I know that money spent in the right direction will save in
fuel and ride in the longer run. But over kill is still overkill. This
is a 23 ft. V-hull Marquis with a 350 GM engine and not some 3000 hp.
40 ft. Fountain off shore racer. So, anyone have any suggestions?

Tim,

My father had hydraulic trim tabs on his 22 ft. Apollo back in the day, they
were very useful for the application that you are referring. They are also
very helpful if you have an offset in the load, you can equalize easily with
the trim tabs.

For little investment, you might also try one of the following first.. *I
have no experience on larger boats, however I know they work well on smaller
run abouts in the 16 to 18 ft. range. There are several other manufactures
on the market besides this one.

http://www.davisnet.com/MARINE/produ...asp?pnum=00448

JT- Hide quoted text -

- Show quoted text -

Thanks JT. I do have a fin on the lower end, though

Forget the spring -loaded tabs. *They will always add drag.

If your fin is anything like the one I had on my old bowrider, it has an
odd effect on the cornering. *I took mine off.

Try this: *Don't ease the throttle, open it up. *Just as the bow begins
to lower, back off on the throttle until you have it where you want to
be. *If that still takes too long, you can play with prop size, pitch,
cupping and venting. *When you get your desired result, you will may
lose some top end speed. *Prop selection is a PITA for most boat owners..

Larry, that's what I do with my smaller boat and it hole shots quite
well. The big tub? it drags and plows until it decides to get up and
running. I dont' know, maybe I'm asking too much of the take off
performance on the big one, but I don't *think so. Something is amiss
(maybe me!) and I'll have to experiment around with it for a while I
suppose.

Are the carbs clean?

Oh yes. It runs very well. starts easily, and throttles up without a
cough.

Question about trim tabs
 

Tim wrote:
On Mar 31, 7:11 pm, Larry wrote:
Tim wrote:
On Mar 30, 6:32 pm, wrote:
Tim wrote:
On Mar 30, 8:42 am, wrote:
wrote in message
....
There's an old saying at a local high performance engine shop that
says "Speed costs money, how fast do you want to go?" And I know the
old rule usually applies "you get what you pay for? Well for the few
times I've taken my marquis out it's interesting to get it up on
plane. first , if you ease the throttle, you'll do a wheelie to where
you think the boat will flip over backwards and you do little but plow
water , so you have to nail it and you still get an extreme bow rise
but it settles down and know you're going, but you still have to keep
the RPM up above 2800 or the boat wants to drag back. So I'm
investigating trim tabs. There's all kinds on the market anywhere from
sophisticated hydraulic and independently controlled units ranging up
to around $500.00 all the way down to the spring loaded sets that that
are available for around a hundred bucks. I'm sure that trim tabs
would help the boating experience, but I'm really wondering how much
trim control I'm actually needing. to make a more efficient ride and
run. I'm constantly accused of being 'tight' but I'm not THAT tight,
because I know that money spent in the right direction will save in
fuel and ride in the longer run. But over kill is still overkill. This
is a 23 ft. V-hull Marquis with a 350 GM engine and not some 3000 hp.
40 ft. Fountain off shore racer. So, anyone have any suggestions?
Tim,
My father had hydraulic trim tabs on his 22 ft. Apollo back in the day, they
were very useful for the application that you are referring. They are also
very helpful if you have an offset in the load, you can equalize easily with
the trim tabs.
For little investment, you might also try one of the following first. I
have no experience on larger boats, however I know they work well on smaller
run abouts in the 16 to 18 ft. range. There are several other manufactures
on the market besides this one.
http://www.davisnet.com/MARINE/produ...asp?pnum=00448
JT- Hide quoted text -
- Show quoted text -
Thanks JT. I do have a fin on the lower end, though
Forget the spring -loaded tabs. They will always add drag.
If your fin is anything like the one I had on my old bowrider, it has an
odd effect on the cornering. I took mine off.
Try this: Don't ease the throttle, open it up. Just as the bow begins
to lower, back off on the throttle until you have it where you want to
be. If that still takes too long, you can play with prop size, pitch,
cupping and venting. When you get your desired result, you will may
lose some top end speed. Prop selection is a PITA for most boat owners..
Larry, that's what I do with my smaller boat and it hole shots quite
well. The big tub? it drags and plows until it decides to get up and
running. I dont' know, maybe I'm asking too much of the take off
performance on the big one, but I don't think so. Something is amiss
(maybe me!) and I'll have to experiment around with it for a while I
suppose.
Are the carbs clean?

Oh yes. It runs very well. starts easily, and throttles up without a
cough.

I'm sure you have heard the old saw "There's no replacement for
displacement"
If your engine isn't big enough, there is no magic pill to make it
perform like a racehorse.

Also here are some easy checks for performance killers other than trim
and prop sizing. You probably have already checked these items, but just
in case, let's review.

Is the boat waterlogged? Weigh it to find out.

Is there hook or rocker on the boat bottom? A quick eyeball will tell you.

Is there something preventing the throttle plates from opening? Cable
adjustment etc.

Are the secondaries working?

Is static timing somewhere between 6 and 10 degrees?

Does the distributer have mechanical advance? Is it working?

Longshot: Might the coil be breaking down or a plug wire arcing. You
would notice that right away though.

Question about trim tabs
 

On Apr 1, 7:11*am, anon-e-moose wrote:
Tim wrote:
On Mar 31, 7:11 pm, Larry wrote:
Tim wrote:
On Mar 30, 6:32 pm, *wrote:
Tim wrote:
On Mar 30, 8:42 am, * *wrote:
* *wrote in message
....
There's an old saying at a local high performance engine shop that
says "Speed costs money, how fast do you want to go?" And I know the
old rule usually applies "you get what you pay for? Well for the few
times I've taken my marquis out it's interesting to get it up on
plane. first , if you ease the throttle, you'll do a wheelie to where
you think the boat will flip over backwards and you do little but plow
water , so you have to nail it and you still get an extreme bow rise
but it settles down and know you're going, but you still have to keep
the RPM up above 2800 or the boat wants to drag back. So I'm
investigating trim tabs. There's all kinds on the market anywhere from
sophisticated hydraulic and independently controlled units ranging up
to around $500.00 all the way down to the spring loaded sets that that
are available for around a hundred bucks. I'm sure that trim tabs
would help the boating experience, but *I'm really wondering how much
trim control I'm actually needing. to make a more efficient ride and
run. I'm constantly accused of being 'tight' but I'm not THAT tight,
because I know that money spent in the right direction will save in
fuel and ride in the longer run. But over kill is still overkill. This
is a 23 ft. V-hull Marquis with a 350 GM engine and not some 3000 hp.
40 ft. Fountain off shore racer. So, anyone have any suggestions?
Tim,
My father had hydraulic trim tabs on his 22 ft. Apollo back in the day, they
were very useful for the application that you are referring. They are also
very helpful if you have an offset in the load, you can equalize easily with
the trim tabs.
For little investment, you might also try one of the following first. *I
have no experience on larger boats, however I know they work well on smaller
run abouts in the 16 to 18 ft. range. There are several other manufactures
on the market besides this one.
http://www.davisnet.com/MARINE/produ...asp?pnum=00448
JT- Hide quoted text -
- Show quoted text -
Thanks JT. I do have a fin on the lower end, though
Forget the spring -loaded tabs. *They will always add drag.
If your fin is anything like the one I had on my old bowrider, it has an
odd effect on the cornering. *I took mine off.
Try this: *Don't ease the throttle, open it up. *Just as the bow begins
to lower, back off on the throttle until you have it where you want to
be. *If that still takes too long, you can play with prop size, pitch,
cupping and venting. *When you get your desired result, you will may
lose some top end speed. *Prop selection is a PITA for most boat owners..
Larry, that's what I do with my smaller boat and it hole shots quite
well. The big tub? it drags and plows until it decides to get up and
running. I dont' know, maybe I'm asking too much of the take off
performance on the big one, but I don't *think so. Something is amiss
(maybe me!) and I'll have to experiment around with it for a while I
suppose.
Are the carbs clean?

Oh yes. It runs very well. starts easily, and throttles up without a
cough.

I'm sure you have heard the old saw "There's no replacement for
displacement"
If your engine isn't big enough, there is no magic pill to make it
perform like a racehorse.

Also here are some easy checks for performance killers other than trim
and prop sizing. You probably have already checked these items, but just
in case, let's review.

Is the boat waterlogged? Weigh it to find out.

Is there hook or rocker on the boat bottom? A quick eyeball will tell you..

Is there something preventing the throttle plates from opening? Cable
adjustment etc.

Are the secondaries working?

Is static timing somewhere between 6 and 10 degrees?

Does the distributer have mechanical advance? Is it working?

Longshot: Might the coil be breaking down or a plug wire arcing. You
would notice that right away though.

The boat is fine. the engine is fine. The problem is that it doesn't
plane outto what Iwodl expect, but then again, I'm used to a smaller ,
lighter 18ft. craft with a 14 hp 4 cyl engine. Now we're talking about
a high sided heavy, 23 ft small cuddie boat with a 228 hp 350 GM
mercruiser. Sure an elephant isn't going to give stallion performance,
that is if that's what your looking for, but a stallion isn't going to
carry an extra half ton of people and stuff , and give a great ride
with lots of stability either.

the boat does have the performance, it just the planing is a bit of an
issue, and I have no experience with trim tabs but have 'heard' they
can help with performance, planing speed, and economy. That's why all
the questions about them.

Question about trim tabs
 

Tim wrote:
On Apr 1, 7:11 am, anon-e-moose wrote:
Tim wrote:
On Mar 31, 7:11 pm, Larry wrote:
Tim wrote:
On Mar 30, 6:32 pm, wrote:
Tim wrote:
On Mar 30, 8:42 am, wrote:
wrote in message
....
There's an old saying at a local high performance engine shop that
says "Speed costs money, how fast do you want to go?" And I know the
old rule usually applies "you get what you pay for? Well for the few
times I've taken my marquis out it's interesting to get it up on
plane. first , if you ease the throttle, you'll do a wheelie to where
you think the boat will flip over backwards and you do little but plow
water , so you have to nail it and you still get an extreme bow rise
but it settles down and know you're going, but you still have to keep
the RPM up above 2800 or the boat wants to drag back. So I'm
investigating trim tabs. There's all kinds on the market anywhere from
sophisticated hydraulic and independently controlled units ranging up
to around $500.00 all the way down to the spring loaded sets that that
are available for around a hundred bucks. I'm sure that trim tabs
would help the boating experience, but I'm really wondering how much
trim control I'm actually needing. to make a more efficient ride and
run. I'm constantly accused of being 'tight' but I'm not THAT tight,
because I know that money spent in the right direction will save in
fuel and ride in the longer run. But over kill is still overkill. This
is a 23 ft. V-hull Marquis with a 350 GM engine and not some 3000 hp.
40 ft. Fountain off shore racer. So, anyone have any suggestions?
Tim,
My father had hydraulic trim tabs on his 22 ft. Apollo back in the day, they
were very useful for the application that you are referring. They are also
very helpful if you have an offset in the load, you can equalize easily with
the trim tabs.
For little investment, you might also try one of the following first. I
have no experience on larger boats, however I know they work well on smaller
run abouts in the 16 to 18 ft. range. There are several other manufactures
on the market besides this one.
http://www.davisnet.com/MARINE/produ...asp?pnum=00448
JT- Hide quoted text -
- Show quoted text -
Thanks JT. I do have a fin on the lower end, though
Forget the spring -loaded tabs. They will always add drag.
If your fin is anything like the one I had on my old bowrider, it has an
odd effect on the cornering. I took mine off.
Try this: Don't ease the throttle, open it up. Just as the bow begins
to lower, back off on the throttle until you have it where you want to
be. If that still takes too long, you can play with prop size, pitch,
cupping and venting. When you get your desired result, you will may
lose some top end speed. Prop selection is a PITA for most boat owners..
Larry, that's what I do with my smaller boat and it hole shots quite
well. The big tub? it drags and plows until it decides to get up and
running. I dont' know, maybe I'm asking too much of the take off
performance on the big one, but I don't think so. Something is amiss
(maybe me!) and I'll have to experiment around with it for a while I
suppose.
Are the carbs clean?
Oh yes. It runs very well. starts easily, and throttles up without a
cough.
I'm sure you have heard the old saw "There's no replacement for
displacement"
If your engine isn't big enough, there is no magic pill to make it
perform like a racehorse.

Also here are some easy checks for performance killers other than trim
and prop sizing. You probably have already checked these items, but just
in case, let's review.

Is the boat waterlogged? Weigh it to find out.

Is there hook or rocker on the boat bottom? A quick eyeball will tell you.

Is there something preventing the throttle plates from opening? Cable
adjustment etc.

Are the secondaries working?

Is static timing somewhere between 6 and 10 degrees?

Does the distributer have mechanical advance? Is it working?

Longshot: Might the coil be breaking down or a plug wire arcing. You
would notice that right away though.

The boat is fine. the engine is fine. The problem is that it doesn't
plane outto what Iwodl expect, but then again, I'm used to a smaller ,
lighter 18ft. craft with a 14 hp 4 cyl engine. Now we're talking about
a high sided heavy, 23 ft small cuddie boat with a 228 hp 350 GM
mercruiser. Sure an elephant isn't going to give stallion performance,
that is if that's what your looking for, but a stallion isn't going to
carry an extra half ton of people and stuff , and give a great ride
with lots of stability either.

the boat does have the performance, it just the planing is a bit of an
issue, and I have no experience with trim tabs but have 'heard' they
can help with performance, planing speed, and economy. That's why all
the questions about them.

One more question. Assuming you can get it to plane, what is the
observed wide open throttle RPM. And please do get the boat weighed
separately from the trailer. Lots of older boats suffer from that malady.

Question about trim tabs
 

On Apr 1, 6:58*am, anon-e-moose wrote:
Tim wrote:
On Apr 1, 7:11 am, anon-e-moose wrote:
Tim wrote:
On Mar 31, 7:11 pm, Larry wrote:
Tim wrote:
On Mar 30, 6:32 pm, *wrote:
Tim wrote:
On Mar 30, 8:42 am, * *wrote:
* *wrote in message
....
There's an old saying at a local high performance engine shop that
says "Speed costs money, how fast do you want to go?" And I know the
old rule usually applies "you get what you pay for? Well for the few
times I've taken my marquis out it's interesting to get it up on
plane. first , if you ease the throttle, you'll do a wheelie to where
you think the boat will flip over backwards and you do little but plow
water , so you have to nail it and you still get an extreme bow rise
but it settles down and know you're going, but you still have to keep
the RPM up above 2800 or the boat wants to drag back. So I'm
investigating trim tabs. There's all kinds on the market anywhere from
sophisticated hydraulic and independently controlled units ranging up
to around $500.00 all the way down to the spring loaded sets that that
are available for around a hundred bucks. I'm sure that trim tabs
would help the boating experience, but *I'm really wondering how much
trim control I'm actually needing. to make a more efficient ride and
run. I'm constantly accused of being 'tight' but I'm not THAT tight,
because I know that money spent in the right direction will save in
fuel and ride in the longer run. But over kill is still overkill. This
is a 23 ft. V-hull Marquis with a 350 GM engine and not some 3000 hp.
40 ft. Fountain off shore racer. So, anyone have any suggestions?
Tim,
My father had hydraulic trim tabs on his 22 ft. Apollo back in the day, they
were very useful for the application that you are referring. They are also
very helpful if you have an offset in the load, you can equalize easily with
the trim tabs.
For little investment, you might also try one of the following first. *I
have no experience on larger boats, however I know they work well on smaller
run abouts in the 16 to 18 ft. range. There are several other manufactures
on the market besides this one.
http://www.davisnet.com/MARINE/produ...asp?pnum=00448
JT- Hide quoted text -
- Show quoted text -
Thanks JT. I do have a fin on the lower end, though
Forget the spring -loaded tabs. *They will always add drag.
If your fin is anything like the one I had on my old bowrider, it has an
odd effect on the cornering. *I took mine off.
Try this: *Don't ease the throttle, open it up. *Just as the bow begins
to lower, back off on the throttle until you have it where you want to
be. *If that still takes too long, you can play with prop size, pitch,
cupping and venting. *When you get your desired result, you will may
lose some top end speed. *Prop selection is a PITA for most boat owners..
Larry, that's what I do with my smaller boat and it hole shots quite
well. The big tub? it drags and plows until it decides to get up and
running. I dont' know, maybe I'm asking too much of the take off
performance on the big one, but I don't *think so. Something is amiss
(maybe me!) and I'll have to experiment around with it for a while I
suppose.
Are the carbs clean?
Oh yes. It runs very well. starts easily, and throttles up without a
cough.
I'm sure you have heard the old saw "There's no replacement for
displacement"
If your engine isn't big enough, there is no magic pill to make it
perform like a racehorse.

Also here are some easy checks for performance killers other than trim
and prop sizing. You probably have already checked these items, but just
in case, let's review.

Is the boat waterlogged? Weigh it to find out.

Is there hook or rocker on the boat bottom? A quick eyeball will tell you.

Is there something preventing the throttle plates from opening? Cable
adjustment etc.

Are the secondaries working?

Is static timing somewhere between 6 and 10 degrees?

Does the distributer have mechanical advance? Is it working?

Longshot: Might the coil be breaking down or a plug wire arcing. You
would notice that right away though.

The boat is fine. the engine is fine. The problem is that it doesn't
plane outto what Iwodl expect, but then again, I'm used to a smaller ,
lighter 18ft. craft with a 14 hp 4 cyl engine. Now we're talking about
a high sided heavy, 23 ft small cuddie boat with a 228 hp 350 GM
mercruiser. Sure an elephant isn't going to give stallion performance,
that is if that's what your looking for, but a stallion isn't going to
carry an extra half ton of people and stuff , and give a great ride
with lots of stability either.

the boat does have the performance, it just the planing is a bit of an
issue, and I have no experience with trim tabs but have 'heard' they
can help with performance, planing speed, and economy. That's why all
the questions about them.

One more question. Assuming you can get it to plane, what is the
observed wide open throttle RPM. And please do get the boat weighed
separately from the trailer. Lots of older boats suffer from that malady.- Hide quoted text -

- Show quoted text -

Once you nail the throttle and the nose shoots for the moon I'd say
you're planing in a few but up to 5 seconds. then the nosed drops down
and you can back to the throttle down to about to 1800 rpm before it
stalls.

Weight the boat seperately woudl really be a chore. aand I dont' know
of any practical way on how to do that around ehre, unless you weighe
the combination, then launched the boat then took the trailer some
where and weighed it seperately. I believe the hull is in fine shape
thoght at least from what I can tell.