New Rotrex C38R Supercharger

tiller · 02-28-2019, 04:26 PM

Quote:

Originally Posted by jefftang04

The charge cooler definitely needs an upgrade. The gtm one most prob will be to limited.

Next would be the serpentine belt. Are you still on stock 7pk? Min it should be 8pk and even that's a stretch. 10pk would be perfect.

Have you found a 10pk that fits your gtm? Doubt there is one, I haven’t had any issue so far with the belt on my kit with c38-91, and it’s maxed out ,but I always keep a spare with me.

jefftang04 · 03-03-2019, 04:08 AM

Quote:

Originally Posted by tiller

Have you found a 10pk that fits your gtm? Doubt there is one, I haven’t had any issue so far with the belt on my kit with c38-91, and it’s maxed out ,but I always keep a spare with me.

I'm currently on 8pk. Had to custom most of the pulleys. But it was worth it as the belt is able to last much longer now.

Jinxx · 03-03-2019, 08:32 AM

Quote:

Originally Posted by jefftang04

I'm currently on 8pk. Had to custom most of the pulleys. But it was worth it as the belt is able to last much longer now.

The belt wrap is like 80% so there isn’t much chance of slip ....you can also get a belt a little shorter from any parts store to get more tension

jefftang04 · 03-06-2019, 09:03 PM

Quote:

Originally Posted by Jinxx

The belt wrap is like 80% so there isn’t much chance of slip ....you can also get a belt a little shorter from any parts store to get more tension

Hi, my problem is not with the slip. Its with the longevity of the belt.

Cheers

tiller · 03-07-2019, 02:37 PM

Quote:

Originally Posted by jefftang04

Hi, my problem is not with the slip. Its with the longevity of the belt.

Cheers

Keep us posted on your progress with the unit and install , very interested. Thanks

jefftang04 · 03-11-2019, 03:34 AM

Quote:

Originally Posted by tiller

Keep us posted on your progress with the unit and install , very interested. Thanks

Hi guys, the new Intercooler is in. Now I'm working on the new SC cooling system as well as charge piping.

Currently I sized the pulley to achieve 80k SC rpm at 7500 engine rpm. I made another pulley for 90k SC rpm, we'll see how it goes when the car is on the Dyno.

Should be done by this week. Hopefully can start tuning by this weekend.

I'm excited too.

tiller · 03-11-2019, 11:26 AM

Quote:

Originally Posted by jefftang04

Hi guys, the new Intercooler is in. Now I'm working on the new SC cooling system as well as charge piping.

Currently I sized the pulley to achieve 80k SC rpm at 7500 engine rpm. I made another pulley for 90k SC rpm, we'll see how it goes when the car is on the Dyno.

Should be done by this week. Hopefully can start tuning by this weekend.

I'm excited too.

Do you have a pic of new intercooler? curious on how much bigger you went, intercooler in the stage 2 sc kit works great with the FI tow bar installed on the c38-91 maxed out.

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