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New Rotrex C38R Supercharger

Originally Posted by Jinxx The gtm stage 2 kit has a 3 inch pipe with a 4 inch velocity stack Yes your right. Where’s the rest of the people that

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Old 02-21-2019, 04:09 PM   #91 (permalink)
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Originally Posted by Jinxx View Post
The gtm stage 2 kit has a 3 inch pipe with a 4 inch velocity stack
Yes your right.

Where’s the rest of the people that were on the pre order list, the suspense is killing me to find out more about this unit.
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Old 02-21-2019, 05:08 PM   #92 (permalink)
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Yes your right.

Where’s the rest of the people that were on the pre order list, the suspense is killing me to find out more about this unit.
I kinda wish I still had my GTM supercharger kit ...but I sold the 2015 nismo..and sold the kit off it ....still pushing the 2017 nismo with the turbo tho ....having 2 Zs was with both kits made it hard to choose which to keep lol
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Old 02-22-2019, 04:13 PM   #93 (permalink)
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I kinda wish I still had my GTM supercharger kit ...but I sold the 2015 nismo..and sold the kit off it ....still pushing the 2017 nismo with the turbo tho ....having 2 Zs was with both kits made it hard to choose which to keep lol
Ya my z with that sc kit on it is a great all around car, converting it to e85 this year, but I really want to see how this c38r performs, I think at 17lbs of boost on a Mildly built motor on e85 should put down some good usable numbers.
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Old 02-24-2019, 07:14 PM   #94 (permalink)
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Ya my z with that sc kit on it is a great all around car, converting it to e85 this year, but I really want to see how this c38r performs, I think at 17lbs of boost on a Mildly built motor on e85 should put down some good usable numbers.
I loved my Z with the supercharger kit on it .....but the turbo Z was a whole other animal ...made the supercharger seem very tame
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Old 02-25-2019, 06:10 PM   #95 (permalink)
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Good to hear there actually getting out to customers, have they said when there gona be available for anyone to purchase?I’ve been waiting on info for awhile as iam thinking about upgrading my rotrex on my gtm stage 2 kit.

What was the final cost if you don’t mind me asking? I believe the c38-91 that is on my car is already 3” inlet.

Keep me posted thanks
It's almost 3k Euros for the complete kit with coolers reservior plumbing etc.

Sorry it is 3.5" not 3". I corrected my post.

Thanks
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Old 02-26-2019, 05:46 PM   #96 (permalink)
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It's almost 3k Euros for the complete kit with coolers reservior plumbing etc.

Sorry it is 3.5" not 3". I corrected my post.

Thanks
Ya I was told the c38r will work on existing sc kits out there, I already have the c38-91 installed on my z, so I just need the pump itself, keep us posted on what changes you had to make and the performance of this unit, lbs of boost etc, this pump could determine wether I sell my kit or not, if I can get 17lbs out of this unit that be perfect.
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Old 02-27-2019, 09:55 AM   #97 (permalink)
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Ya I was told the c38r will work on existing sc kits out there, I already have the c38-91 installed on my z, so I just need the pump itself, keep us posted on what changes you had to make and the performance of this unit, lbs of boost etc, this pump could determine wether I sell my kit or not, if I can get 17lbs out of this unit that be perfect.
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.
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Old 02-27-2019, 09:59 AM   #98 (permalink)
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can't wait for some results, i'm on 1.5 gtm kit, would love to see 15+lb of boost

Last edited by scope22; 02-27-2019 at 10:10 AM.
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Old 02-28-2019, 05:26 PM   #99 (permalink)
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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.
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Old 03-03-2019, 05:08 AM   #100 (permalink)
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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.
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Old 03-03-2019, 09:32 AM   #101 (permalink)
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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
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Old 03-06-2019, 10:03 PM   #102 (permalink)
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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
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Old 03-07-2019, 03:37 PM   #103 (permalink)
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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
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Old 03-11-2019, 04:34 AM   #104 (permalink)
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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.
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Old 03-11-2019, 12:26 PM   #105 (permalink)
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Originally Posted by jefftang04 View Post
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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