95' Nautique Project ... expanded

KENO wrote: I've got to say that I agree with Pete, even if Pete hasn't commented on it yet. I think I can be pretty comfortable agreeing with him

We all know what Pete's viewpoint would likely be so I'm pretty comfortable with you being comfortable agreeing with his as yet unsaid comment   

I believe the tower is an Aerial Airborne 2.0.

I think it looks great! Nice work!

gt40KS wrote: Knowing the dual front of comments I'm likely to receive for this one, I've decided to post it anyway

Well since you're expecting it....................

I've got to say that I agree with Pete, even if Pete hasn't commented on it yet. I think I can be pretty comfortable agreeing with him

Knowing the dual front of comments I'm likely to receive for this one, I've decided to post it anyway    

So my son came over on Sunday and helped me get everything aligned and held the heavy parts while I drilled for and installed the top bolts but then had to get back to the family.   I finished the rest myself before the storm hit that evening but didn't get to the wiring till Yesterday.   Anchor light above the tow point was a great addition and the speakers sound great!

Comparing your numbers to the original numbers,they're both pretty mild as far as cams go.

Not a whole lot of difference.

Awesome, thanks guys this helps a lot ! The specs for the Comp cam installed are
.478 / .485 lift intake/exhaust   and 254 / 258 duration Intake/exhaust - so a bit more lift but apparently a marked increase in duration.   Hmmm ....

Gary S wrote: I have heard Joe but not confirmed that a 40 cam specs are - 210/219 duration @.050, 115 LSA, 456/457 intake / exhaust lift

Same numbers as the link to Teamtalk I gave Joe.

PS the link has a link to the cam card in a post by Kyle

Post #13 has the link to the card.

Hi Joe

Sometimes I just amaze myself with my ability to remember stuff that's worthless to 99.9% of the world, but here's an old thread from "another site" with some good info.

It shows the cam specs for a 285 hp Indmar 351 which are probably the same or really really close to the GT-40.

Kyle on that site tells how he got those numbers by sending a cam to Comp Cams and having it measured and duplicated

It's a little better than a 240 hp 351w cam.

I'll let you judge the validity of the info

You might even see a familiar CCF name in that thread

link

Compression change will have no influence on the ECM.
The cam change with the early Ford Fuel Injection is pretty well known to cause issues.
They can be worked around.   My buddy's son has tweaked his to work with twin turbos and it runs just fine but he had to learn a lot about the ECM to make it happen.
I would go to the Ford Mustang forum's to see how much cam the ECM can work with.
750 RPM at idle may only be 600 RPM in gear idle so as Keno suggested you might be fine as is. High idle many times is a sign of a vacuum leak somewhere in the intake system.
On a brand new engine be careful to not let it heat up at all and never accelerate hard till it has been at full temp for a few minutes. On a brand new engine if you accelerate hard while the block is still cold you risk scuffing a piston. The more it breaks in the more this risk fades away..   I am totally willing to run a new engine at wide open throttle after warm up but as soon as it gets close to max RPM back it off and let it cool with easier motoring.   Full throttle actually helps the new piston rings seat properly.
On these maiden voyages stop every few minutes and lift the cover to check everything out.   Check hose clamps, those heavy rubber clamps don't tighten well cold but can be tightened easy when warm while the boat is being used.
You touched so many nuts and bolts to install this new beast it is easy to find one or two that never got torqued properly. It happens.
Looking forward to the water test results.

Thought I have heard of others changing to the higher compression P heads before with no problems. Did they go higher than what those do?

Congrats on the progress.

Yep Ken, that was it .... too many colors on the engine. Painted everything black and all is good

Seriously though, yes it was at op temp of 160 +/-. However I did reuse most of my old sensors so maybe the temp sensor for the ecm is bad?
Though I don't really see the connection, but the new engine does have higher compression that a stock GT40 and the cam is a little bit more radical as well. Is there a possibility the ecm is trying to compensate and somehow causing the idle increase?

Guess I did not see the part about you seeing the throttle plate closed

Running the engine a bit more and for some reason I can't get the idle down below about 750-800. I've backed the idle screw off so it's not engaging at all and confirmed the butterfly is completely closed and I assembled everything with all new gaskets - it just won't idle down any further. Any ideas?

Thanks