track engine fan

[r lane]

I have the long block together for a 3.6 track engine. I am ready to finish it and need to decide how to drive the fan. GT 3 crank, so with a square nose on the pully end. I
have a pully that I can adapt to this motor with a V belt, or I can buy a multi rib belt/pully setup. I run a V belt on my 3.0 motors with no issues, but wonder about the same on the 3.6 setup. Appreciate any experience and advice on this matter. Thanks, Bob

[winders]

After racing 3.6L engines for a very long time, I would highly recommend getting the Clewett serpentine belt setup.

[stownsen914]

I've heard similar recommendations from others about getting a serpentine belt conversion. Yet in all my years of running 911 engines on track (mostly to 7500 RPM), I've never tossed a belt. What causes the tossing? I wonder if driving style can be a contributing factor.

[Bill Verburg]

Originally Posted by r lane

I have the long block together for a 3.6 track engine. I am ready to finish it and need to decide how to drive the fan. GT 3 crank, so with a square nose on the pully end. I
have a pully that I can adapt to this motor with a V belt, or I can buy a multi rib belt/pully setup. I run a V belt on my 3.0 motors with no issues, but wonder about the same on the 3.6 setup. Appreciate any experience and advice on this matter. Thanks, Bob

Talk to Neil Harvey or Jeff Gamroth about this setup

[MikaylaIngram]

By the way, it looks good.

Originally Posted by r lane

Purchased this from Clewett engineering. Fits up nicely except it appears that the crank pulley needs to step out 2.5mm for the sensor wheel to line up correctly, so the fan housing is clear and the belt has good alignment. Spoke with Richard and the dimensions on the pulley appear correct. It is a 93 3.6 case with a GT3 crank. This kit is for a 993 due to the square nose on the crank. I can make a shim and a longer dowel, but I would like to know why I have this issue. Any info will be appreciated.
For your 3.6 track engine, you have two options for driving the fan: adapting a V belt pulley or using a multi-rib belt setup. Given that you've had success with V belts on your 3.0 motors, it could be a viable option for the 3.6 as well. However, the multi-rib belt system often provides better efficiency and stability, especially for higher RPM applications, which might be beneficial for a track engine. Consider the demands of your setup and the advantages of each system. If you anticipate higher loads or speeds, the multi-rib belt might offer better performance and reliability. There are moments when deadlines come unexpectedly, and services such as https://lastminutewriting.com/ can offer a solution. It's set up to handle urgent writing assignments, focusing on delivering content efficiently. This can be particularly helpful for anyone needing to turn around a writing project in a short period.
Bob

Thanks for the update.

[r lane]

Purchased this from Clewett engineering. Fits up nicely except it appears that the crank pulley needs to step out 2.5mm for the sensor wheel to line up correctly, so the fan housing is clear and the belt has good alignment. Spoke with Richard and the dimensions on the pulley appear correct. It is a 93 3.6 case with a GT3 crank. This kit is for a 993 due to the square nose on the crank. I can make a shim and a longer dowel, but I would like to know why I have this issue. Any info will be appreciated. Bob

[r lane]

track engine fan