Crank pulley damper shift?
Thread Starter
Melting Slicks
Joined: Jun 2002
Posts: 3,060
Likes: 3
From: Dublin CA
Crank pulley damper shift?
Has anyone experienced damper shift? ATI has a kit to fix it, but I didn't realize it was a problem...
http://www.atiperformanceproducts.co...s/pr/30402.htm
http://www.atiperformanceproducts.co...s/pr/30402.htm
Melting Slicks
Joined: Jan 2002
Posts: 2,049
Likes: 1
From: kansas city MO
Re: Crank pulley damper shift? (blu00rdstr)
That is old news...You got to pin it, PERIOD.
Newer procharger kit comes w/ a pinning kit. Might want to call procharger, they'll probably send you the pinning kit w/ just shipping charge.
Newer procharger kit comes w/ a pinning kit. Might want to call procharger, they'll probably send you the pinning kit w/ just shipping charge.
Le Mans Master
Joined: Apr 2000
Posts: 7,248
Likes: 0
Re: Crank pulley damper shift? (boblackhardtop)
If anyone is interested in a keywayed NEW stock damper that will work with the above ATI Pin kit, email me at: mjarnold@vsecurenet.com
I ended up purchasing the more expensive $500 Super Damper that goes with the above kit also & still have the new stocker with machined keyways.
I ended up purchasing the more expensive $500 Super Damper that goes with the above kit also & still have the new stocker with machined keyways.
Thread Starter
Melting Slicks
Joined: Jun 2002
Posts: 3,060
Likes: 3
From: Dublin CA
Re: Crank pulley damper shift? (boblackhardtop)
That is old news...You got to pin it, PERIOD.
Newer procharger kit comes w/ a pinning kit. Might want to call procharger, they'll probably send you the pinning kit w/ just shipping charge.
Newer procharger kit comes w/ a pinning kit. Might want to call procharger, they'll probably send you the pinning kit w/ just shipping charge.
I thought it pinned the outer section of the pulley to the inner section to prevent movement at the rubber joint.
Le Mans Master
Joined: Apr 2000
Posts: 7,248
Likes: 0
Re: Crank pulley damper shift? (blu00rdstr)
There are 3 types.
1) True Keyways cut into the damper and a key cut into the crank.
2) Vertical pins, like the kit shown above, which requires squared keyways in the damper.
3) Horizontal pins, which drill into both the crank shaft and the damper at the same time horizontally.
#1 is the best but requires engine disassembly and machine work on the crank.
#2 is the 2nd best as the vertical pins go deeper into the crank than the horizontal drill and the veritical keyway in the damper has a square surface for better, deeper grip.
#3 is better than nothing (stock). It's the easiest and is what certain SC kits might include. Don't confuse ATI Performance (Damper) company with ATI Supercharger company (Accessible Technology).
P.S. I opted for #2.
P.S.S. I have a stock damper keywayed and available per Technique #2.
[Modified by MelloYellow, 3:43 AM 9/7/2003]
1) True Keyways cut into the damper and a key cut into the crank.
2) Vertical pins, like the kit shown above, which requires squared keyways in the damper.
3) Horizontal pins, which drill into both the crank shaft and the damper at the same time horizontally.
#1 is the best but requires engine disassembly and machine work on the crank.
#2 is the 2nd best as the vertical pins go deeper into the crank than the horizontal drill and the veritical keyway in the damper has a square surface for better, deeper grip.
#3 is better than nothing (stock). It's the easiest and is what certain SC kits might include. Don't confuse ATI Performance (Damper) company with ATI Supercharger company (Accessible Technology).
P.S. I opted for #2.
P.S.S. I have a stock damper keywayed and available per Technique #2.
[Modified by MelloYellow, 3:43 AM 9/7/2003]
