http://web.camaross.com/forums/showt...hreadid=256905

 

Nice numbers. Are you the one that had the spacer for the fluidampr and ATI crank pulley? If you still have it, I could give it a good home.

 

Yea, but you really want the cog setup...

j/k

Let me check with my builder and see what he says. It may be time to part with the 12-rib setup.

 

Nice numbers. How much boost did you make with the cog setup?

 

How did the 42lb injectors hold up? Using an FMU? Stock ECU? Aftermarket ECU (FAST)? How was the AF?

Thanks
-j

 

Good luck with the cog. FWIW I advise against a cog setup for street use. Many people have very short belt life. The teeth tend to strip due to constant rpm changes in street driving. When you wind it up and then close the throttle, the SC impeller wants to keep spinning. It has a lot of inertia and this is when the belt strips. A buddy is running an F1R and had to go to a Kevlar belt to get decent belt life. At ~$125/belt and a life span of weeks he is thinking of going back to a ribbed belt. I am using a Porcharger F1 with a 12-rib setup and have no problems with belt slippage. So, unless you are running a very big blower and absolutely need a cog belt, I'd say stick with a ribbed belt. I don't think you would need to do this with the D1 or S/T-trim size blowers and as I said, I am doing fine with an F1 and a ribbed belt.

Oh yeah, one other thing is that an automatic will be a little more "cog friendly" due to less abrupt rpm changes, especially with a loose converter.

Rich Krause

 

Rich, keep your mouth shut till after he sells me the parts I need!

Tony, If you decide to keep your stuff, can you see about getting another one of those spacers made up for me?

 

If nothing else, I'll have a drawing done that any machinist could use. It's just a little different than the spacer that ATI provides for the stock balancer...

 

Well, we fried the belt on the dyno... so you might be right. We'll see...

http://www.webpeak.com/~tony/bluez/beltdamage.jpg

 

I hope it works for you. We've given up on them unless someone absolutely insists. And in that case, it's "buyer beware". We have been talking about a setup using a cog, some sort of a one way clutch (so the SC would "freewheel" under lift throttle) and a huge bypass/blowoff to handle the resultant excess airflow. I have seen some people change the belt every run at the track. OTOH, some people seem to have no problem. I am not sure of the variables involved other than that an automatic is best and a granny shifted manual is the worst for cog belt life.

Rich Krause

 

Hey Rich, can you find out where your buddy got the kevlar belt?
I'd really appreciate it.

Thanks, TJ

 

I will do that.

Rich

 

This guy http://www.blackout.nu/ has as most seen 7 psi over the finishline (1/4) makes around 20psi from the start... The belts looks like http://www.blackout.nu/movies/Beltproblem.mpg under a race. It looks a litle lose but they have tried widh moore tension also... They also tried diffrent tensioner system.
When he had a 10psi setup the belt last a seson

 

Looks like the tensioner isn't doing anything at all in that vid.

 

I don't think the tensioner is turning at all...