New Rotrex C38R Supercharger

TopgunZ · 03-10-2018, 06:23 PM

Quote:

Originally Posted by Jinxx

They haven’t released any specs for the c38r yet....how did you get that comparison ?

See first post.

TopgunZ · 03-09-2018, 07:09 PM

No, I'm saying that if your pulley is giving you 12.5psi on the 38 then the R will make 14.4 on that same setup. I doubt you are seeing restriction from a 3" intake.

jmroy6 · 03-09-2018, 07:27 PM

That makes more sense. Either way there has to be a restriction of air flow somehwere, no? if a pte flows 74lbs/min and can achieve 16/18lbs of boost. Shouldnt the c38-91 achieve the same boost pressure or even better? Mayb im over thinking this..

Quote:

Originally Posted by TopgunZ

No, I'm saying that if your pulley is giving you 12.5psi on the 38 then the R will make 14.4 on that same setup. I doubt you are seeing restriction from a 3" intake.

TopgunZ · 03-10-2018, 07:57 AM

What size is the outlet on the c38? If it's less than 3" then a 3" intake can't bottleneck it.

jmroy6 · 03-10-2018, 08:50 AM

All outlets are 2.5"

Quote:

Originally Posted by TopgunZ

What size is the outlet on the c38? If it's less than 3" then a 3" intake can't bottleneck it.

Jinxx · 03-10-2018, 07:30 PM

That post has inaccurate info ....our current is .63 kg/s and the c38r is .80 + preliminary and that actual final spec is unknown ... and you are factoring the pressure ratio as if it would be the same ... where is would be 3.00 or better
https://www.bimmerboost.com/content....wer-capability

tiller · 03-13-2018, 08:17 AM

Jinxx are you on the pre order list for c38r?

Jinxx · 03-13-2018, 06:57 PM

Quote:

Originally Posted by tiller

Jinxx are you on the pre order list for c38r?

No I’m not .... I wanted to see the final specs before buying ... had they released the specs first I would have been... I did call Jackson racing and talked to them about it ... they said that the c38r will have 30% more output over the c38 throughout the rpm range ... all good news to hear lol

tiller · 03-15-2018, 08:26 AM

Quote:

Originally Posted by Jinxx

No I’m not .... I wanted to see the final specs before buying ... had they released the specs first I would have been... I did call Jackson racing and talked to them about it ... they said that the c38r will have 30% more output over the c38 throughout the rpm range ... all good news to hear lol

ya iam waiting on the specs to, sounds promising so far. I spoke with Jackson and kraftwerks also.

batboyvaj · 05-30-2018, 12:46 PM

The c38r was suppose to start shipping in Apr. Did anyone purchase one to test?

R3drckt09 · 05-30-2018, 01:41 PM

I wanted to but it wasn’t quite the right time for me. I called Jackson Racing this morning and they said the pre order is closed but those units will ship in June, and then more will be available for purchase in July

tiller · 06-04-2018, 06:54 AM

Quote:

Originally Posted by batboyvaj

The c38r was suppose to start shipping in Apr. Did anyone purchase one to test?

I contacted a rep that was on there US sales board, nothing as of yet, I’ll post in here as soon as there’s news.

Amaterazu · 05-31-2018, 03:37 AM

Is it possible to put a rotrex supercharger and an FI twin turbo in the same vehicle?
I think that would be crazy if it lasted!

I'd do that too....just to see how it feels!!!

kentmo280z · 05-31-2018, 12:40 PM

sub'd

daveb91 · 05-31-2018, 04:16 PM

Quote:

Originally Posted by Amaterazu

Is it possible to put a rotrex supercharger and an FI twin turbo in the same vehicle?
I think that would be crazy if it lasted!

I'd do that too....just to see how it feels!!!

And why?
Yes you could but why...unicorns could also fart raindows....

03-09-2018, 07:09 PM	#2 (permalink)
TopgunZ A True Z Fanatic Join Date: Jun 2012 Location: Minneapolis Posts: 2,651 Drives: 06 350Z , 09 370Z MT Rep Power: 6834	No, I'm saying that if your pulley is giving you 12.5psi on the 38 then the R will make 14.4 on that same setup. I doubt you are seeing restriction from a 3" intake. __________________ ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM Last edited by TopgunZ; 03-09-2018 at 07:11 PM.

03-10-2018, 07:57 AM	#4 (permalink)
TopgunZ A True Z Fanatic Join Date: Jun 2012 Location: Minneapolis Posts: 2,651 Drives: 06 350Z , 09 370Z MT Rep Power: 6834	What size is the outlet on the c38? If it's less than 3" then a 3" intake can't bottleneck it. __________________ ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

03-10-2018, 07:30 PM	#6 (permalink)
Jinxx Track Member Join Date: Dec 2015 Location: South Carolina Posts: 699 Drives: 2017 nismo 370z Rep Power: 3376	That post has inaccurate info ....our current is .63 kg/s and the c38r is .80 + preliminary and that actual final spec is unknown ... and you are factoring the pressure ratio as if it would be the same ... where is would be 3.00 or better https://www.bimmerboost.com/content....wer-capability Last edited by Jinxx; 03-10-2018 at 07:34 PM.

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