New Rotrex C38R Supercharger

R3drckt09

Dang, must be nice to have both! I just got a G37S sedan (6 speed manual) that I'd love to turbo, idk when that'll happen though

Z eliminator

Is it a direct bolt on for the new SC?

Z

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Jinxx

It is supposed to be same bracket locations for all the c38series....prolly same housing with upgraded impeller and internals.

theDreamer

If I did not just rip my broken SC out last year and do a replacement I would jump on this, might have to add it to my list when I do e85 now. That list keeps growing of things I want to do if I switch fuel....

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SS_Firehawk

This unit is an excellent reason to revisit supercharging instead of having to settle for Stillen, or old GTM kits. There is the RJ-M kit coming out, but it's not for everyone due to the hood clearance issue.

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tiller

Having a hard time veiwing the link, is it legit?

tiller

Iam waiting to hear back if it will fit our existing location

Jinxx

Rotrex A/S


Says maintains all brackery locations for all c38 series for replacements

cupcakez

Do you guys think these blowers are much better than the ones Vortech offers?
The price is super low compared to the Vortech ones, and I havent heard much about rotrex SCs.
Like, if you had a choice:
V7-YSi / V7-YSi billet
vs
Rotrex c38R coming out this year

what would you guys choose and why?

TopgunZ

This thing is tiny compared to a V7. Just look at their flow rates.

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ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

Jinxx

Another thing to consider other than size ....efficiency ...the v-7 is 78% while the rotrex is 97 % ....also decide how far you want to build the motor ...how much boost you want to run etc.... I’m using the c38 rotrex and running 12lbs boost and make decent hp/tq with it but it is maxed out ....the c38r would put me with all the boost I would be able to run without building the bottom end. ....

However....I don’t have any experience with the v-7 supercharger so my opinion may be a little off ...I have been using the rotrex with no issues and would choose efficiency for my application between the two.

I also can’t find the rotrex cfm..they spec it as .63 kg/s not sure how to convert that over to cfm

cupcakez

So... is efficiency or air flow rate more important when it comes to a blower?
I would guess the air flow rate because you can have 100% efficiency of a tiny blower that has a tiny air flow rate vs a giant blower with less efficiency but way more air flow rate. Am i right or nah?

Jimbo370

here is the conversion from bing Convert kg/sec. to cu ft/min | kilogram (petrol) per second to cubic feet per minute

Jinxx

I may be wrong .. but I would say it depends on the application .. you want a blower that can flow enough CFM for the motor to maintain boost throughout the RPM and within the sweet spot of the blower without overspinning and generating excess heat .... anything after that in my opinion is a waste ... or overkill.... I would never use a small blower that couldn’t keep up...

TopgunZ

Or...which blower will make more power. In this case the V7 would. Don't get me wrong, the c38r looks pretty sweet and has huge potential in the right application. For anyone with the gtm kit that can get it for under $700 it's the no brainerest of no brainers to me. I mean, used c38s sell for that. I can't imagine they will be sold at that price though.

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ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM