750,PSI Pipe,44s,Westcoast F/A, motor

[Keddano]

Got into the 750 motor I bought out of Fla.about 4 months ago. It is a stock case 750(no porting),Ocean Pro Head with 26 CC chambers,Std. bore polaris pistons, with like new 44's with no choke plates,mounted on Boswell Intakes,Triple outlet pump,looks like stock reeds,and was running oil injection,with a single PSI Pipe.

The motor had a pretty good wash pattern on 2 of the pistons(1 was running lean,the other 2 I would like to see a little richer,but they were close.I pulled the carbs to check the jets,so we'd have something solid from a ski that had lived with the set-up discribed.

The carbs were running 90 mains and 120 pilots,with the High speed screws at 1-1 1/4 turns out, and the Lows at 1 1/2 turns out.

I bought this motor to do a second hot rod ski out of it, But with the MSX Project now,I will be selling this motor as a whole or parted out. That will be determined by the interest show in it.I may throw the head back on and take a compression reading.The Cylinders look good,but I would hone and put fresh rings on it(but that is me). I may even run thru it and throw it in the Triple pipe ski while I have that motor back out doing the other stuff I'm planning. So if anyone has interest in it,let me know. If wanted,I could hone,rering,rebuild carbs and new seals and gaskets,and deliver it as a fresh motor(minus crank rebuild).I will be checking the index and splitting the cases to check the crank play.

[Keddano]

Here's a few more pictures.
I'm thinking of running the WESTCOAST F/A's in place of the O/P ones on the PSI Triple ski,Any thoughts? I like that they are Velocity Stacks and would be easier to get to the adjusting screws without removing them.

[xlint89]

Velocity stacks are supposed to be nice...

Are you sure there's no porting on the cyls? Seems like a waste to 44mm carb it without.

Thanks for posting the jetting specs.

[Keddano]

I'll get some pictures and check them with stock.

[xlint89]

The carbs were running 90 mains and 120 pilots,with the High speed screws at 1-1 1/4 turns out, and the Lows at 1 1/2 turns out.

What's interesting is the G/F's 750 still has the 38mm SBN carbs with that dry pipe and a PRO CDI. It's running 80 LOWS and 120 (122.5 MAG) HIGHS. That's not much difference in fuel delivery at WOT between 38's and 44's.....

[785 lugs]

looks like it has one Wiseco piston in it ,the first piston pic is of a Wiseco piston and the other two look factory

[xlint89]

Nice catch Bob.

[Keddano]

looks like it has one Wiseco piston in it ,the first piston pic is of a Wiseco piston and the other two look factory

All 3 are the same and stamped the same.
I was think Polaris,but it was the wiseco that are pin punched with the #'s,Right?

[785 lugs]

All 3 are the same and stamped the same.
I was think Polaris,but it was the wiseco that are pin punched with the #'s,Right?

yep wiseco has that writing on the top like that

[xlint89]

Hey Dan, what's the piston to cylinder clearance set at? Thanks