Downside to cog setup???
Registered User
Joined: Oct 2001
Posts: 54
From: albuquerque
Re: Downside to cog setup???
When I called ATI to get a few opinions they told me that the transmission on the D1SC couldn't handle the stress of a cog drive because it wont slip.
Registered User
Joined: Jan 1999
Posts: 3,051
From: Rochester, NY USA
Re: Downside to cog setup???
A M6 car is also going to be harder on a cog setup than an automatic car.
I would recommend the 12 rib setup w/SD Concepts tensioner. The ATI tensioner is garbage.
I would recommend the 12 rib setup w/SD Concepts tensioner. The ATI tensioner is garbage.
Thread Starter
Registered User
Joined: Mar 2002
Posts: 4,827
From: Waynesboro, PA
Re: Downside to cog setup???
Originally Posted by Jason Short
A M6 car is also going to be harder on a cog setup than an automatic car.
I would recommend the 12 rib setup w/SD Concepts tensioner. The ATI tensioner is garbage.
I would recommend the 12 rib setup w/SD Concepts tensioner. The ATI tensioner is garbage.
Registered User
Joined: Oct 1998
Posts: 705
From: Southern CA
Re: Downside to cog setup???
Originally Posted by LittleRedZ
hows that? Crank drives the blower not othe way around. I snaped my snout early this year when the car was idling in the driveway with a 12 rib set up. Most of the time like i said earlier the Tension on the belt and missalignment of the belt is what does it. I noticed that with the12 rib set up you really dont have a belt choice the one that fits is very tight with no tension on it. It creates a PryBar effect kinda if you were to take a pry bar and put it on your crank and put constant pressure on it, the more you tighten the belt the more stress on the crank there is.
There is plenty of people that run very high boost on lt1s with stock hub, you just gotta be very carefull setting it up.
There is plenty of people that run very high boost on lt1s with stock hub, you just gotta be very carefull setting it up.
During my engine rebuild awhile back I noticed the stock LT1 crank snout was "gouged" a little bit due to the hub spinning. I just polished it up and been good ever since along with a billet steel keyed crank hub from ASP. How much damage was done when the snout broke?
Registered User
Joined: Jan 1999
Posts: 3,051
From: Rochester, NY USA
Re: Downside to cog setup???
BADST95, your car is impressive 
What did you do to have good success with the ATI tensioner? I assume you are running the 12 rib setup with those boost figures.
Thanks, Jason
What did you do to have good success with the ATI tensioner? I assume you are running the 12 rib setup with those boost figures.Thanks, Jason
Registered User
Joined: Jul 2004
Posts: 337
From: GERMANTOWN, MARYLAND
Re: Downside to cog setup???
Originally Posted by EDS Z28
Did you have a keyed hub?
During my engine rebuild awhile back I noticed the stock LT1 crank snout was "gouged" a little bit due to the hub spinning. I just polished it up and been good ever since along with a billet steel keyed crank hub from ASP. How much damage was done when the snout broke?
During my engine rebuild awhile back I noticed the stock LT1 crank snout was "gouged" a little bit due to the hub spinning. I just polished it up and been good ever since along with a billet steel keyed crank hub from ASP. How much damage was done when the snout broke?
Registered User
Joined: Oct 1999
Posts: 584
From: Naperville, IL, USA
Re: Downside to cog setup???
Originally Posted by Jason Short
BADST95, your car is impressive What did you do to have good success with the ATI tensioner? I assume you are running the 12 rib setup with those boost figures.
Thanks, Jason
What did you do to have good success with the ATI tensioner? I assume you are running the 12 rib setup with those boost figures.Thanks, Jason
I am using the 12 rib set up from ATI. I have seen several other cars use a 12 rib set up with 18 plus psi without any problems. I made sure that the pulley set up was aligned correctly. I had to machine the ATI aluminum spacer up to work with my balancer. The belt that I used is tight and I locked it down with the ATI tensioner... no slippage. 
Registered User
Joined: May 2002
Posts: 195
From: Rancho Cucamonga ,CA
Re: Downside to cog setup???
The HSR 406 in December's issue of Super Chevy " The New Danger Mouse" (That I was apart of)Also uses a 12 rib pulley. When I was on the phone with procharger prior to the engine build, I also asked for a cog setup. They also discouraged me from the Cog, said it was a pain in the *ss for a "street car" that makes less than 1200hp. Go figure.
Registered User
Joined: Oct 2001
Posts: 385
From: columbia, sc
Re: Downside to cog setup???
i run the F1 off a 12-rib see about 18# boost no sign of slippage on the data logger. still running the same bracket that came with the P1SC kit. car runs 9.20's with 1.25 60'. can't complain.
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