New Rotrex C38R Supercharger

tiller

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.

Jinxx

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

tiller

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.

Jinxx

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

jefftang04

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

tiller

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.

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.

scope22

can't wait for some results, i'm on 1.5 gtm kit, would love to see 15+lb of boost

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.

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.

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

jefftang04

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

Cheers

tiller

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

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.

tiller

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.