Now third place I could take... But fourth?? **** I'd be off of the podium!

 

Do you really think there would be any losers in that company. I wouldn't make a big deal out of this. At this level, barring driver error, no one is going to run away with anything.

 

Nah I don't think so... it's all fun and games It'd be a lot of HP together that's for sure....

 

sharkster,

Guess who swung by S Car Go Racing today?

 

CJV, are the rods shorter than stock? How does their length compare to GT3 rods? If I calculated right your rod length ratio is 1.61, which seems low for a high RPM motor.
It's interesting that the bore, stroke, and rod length of your motor is very close to a 5L. Ford V8.

 

ebaker,

Boy, you opened up a can of worms. Most people don't realize the GT3 crank, rods and pistons have different dimensions. With the added work we applied to one of the cranks, yes things changed.

Here is a comparison pic between KA's rods and the GT3R rods.


They are not as different as they appear ............. but there is a difference. Note the smaller journal size. This has the effect of raising the KA rod height as compared to rods on a GT3 R crank. Actually. the rod length on the turbo, GT3, GT3 Cup and GT3 R are all different.

The pistons also enter into the equation. The turbo motor and the the GT3 motor piston heights are different.

Here is a pic comparison of the GT3 and KA's. Actually the KA piston is a mule piston used to dimension the production one.

 

Continued:

Here is a pic of the finished KA piston.

Versus the GT3 piston.

Yes, there is a difference in everything from height, ring placement, wrist pin size, etc.

However, in combination (crank, rods, pistons) we have the same piston deck height as the GT3 motor.

ebaker, I believe you are one of very few who really understand and hopefully appreciate what went into designing this motor. Many people laugh at the time involved.

As for the rpm's? The motor is designed, a la NASCAR (crank and oval bearings etc) to live at 9500 rpm's.

In conclusion, we have more than 3.6L displacement, but no where near 5.0L. Rob has asked me to leave it to S Car Go Racing to announce on the December 3rd coming out party. So far S Car Go is figuring 200 to 300 people will be attending. If anyone from 6speed community is interested in attending, let me know. I can't guarantee how many extra spaces there will be.

 

Why go to all this trouble and then run a program designed for something else? KA deserves a program made to take advatange of all that's been done to it.

 

We had problems with small block Fords (5.15" rod on 3" stroke) deforming the lower cylinders in drag cars run 8000 +/- rpm. It was thought this was due to the short rods causing high cylinder wall loading. The small block Chevy with a longer 5.7" stock rod didn't seem to have the cylinder wall issues.

 

ebaker,

Thanks for the early warning. I guess we will see what happens on the Boxer motor. Our calcs say it will work. You saw the rod tag. Here is the tag on the crank we decided to use. We have a crank that is stroked 2mm but decided not to use it because of the redline issue.


We did have some concerns on the Nickasil liners, that is why we went to steel/plasma coated liners, reinforced (Spanish) and shuffle pinned case.

 

Here is a pic of the stock liners (L) and steel liners (R).

The rod specs again so you don't have to go back and look them up.

 

Well ............ we have to start somewhere. Once it is started it is going down South to be tuned on a dyno.

 

Interesting you're using 2" rod journals, just like the Chevys. I assume thats smaller than stock rod journals. It's nice to be able to use standard USA parts. I'd bet the 996TT Carillo rods are small block Ford forgings machined to Porsche size. Do you know the stock 996TT rod length? I'd like to know the rod length ratio of my stock engine.

 

I don't know the stock length, but I'll find out from Rob on Monday.

It is my understanding S Car Go reduced the journal size slightly to accomodate the available NASCAR oval bearings.

I have a set of Carillo rods for a stock 996tt motor, however the rods being used on his motor were manufacturered by Pauter.

 

Alex told me he dropped in! Sadly he said it didn't look close to being ready Fingers crossed tho!