Nissan 370Z Forum
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Nissan 370Z Forum (http://www.the370z.com/)
-   Forced Induction (http://www.the370z.com/forced-induction/)
-   -   New Rotrex C38R Supercharger (http://www.the370z.com/forced-induction/125906-new-rotrex-c38r-supercharger.html)

jefftang04 04-25-2019 07:29 PM
Quote:
Originally Posted by scope22 (Post 3846153)
What did the SC cost you? i see they're about 3K here and there...
Yes that's about right.

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tiller 04-26-2019 08:24 AM
Quote:
Originally Posted by jefftang04 (Post 3841245)
Hi guys. Final numbers are out.

471whp on mainline Dyno
HP gain is about 50whp throughout from 5k rpm to 7.5k rpm. Below that is about 20 to 30whp.
14psi of boost at 7500rpm
IAT at peak is 54 DegC
DW 1000cc injectors at 85% duty cycle at peak
No fuel return.......YET........
Fuel pressure at peak is 40PSI. Too low in my books

Cheers guys.


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Are you putting your car back on the dyno after fuel system upgrade? also did the new sc unit bolt up to existing sc bracket without any mods?

jefftang04 05-08-2019 01:31 AM
Quote:
Originally Posted by tiller (Post 3846839)
Are you putting your car back on the dyno after fuel system upgrade? also did the new sc unit bolt up to existing sc bracket without any mods?
Yes it bolts up the same. But the intake is 3.5" instead of 3"

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tiller 06-05-2019 05:24 AM
Quote:
Originally Posted by jefftang04 (Post 3850516)
Yes it bolts up the same. But the intake is 3.5" instead of 3"

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have you put the car back on the dyno yet after fuel upgrade ?

fryzia23 02-04-2023 07:49 AM
bump an old thread, I need to to replace my charger and on the fence whether to go with the R or stick with C38-81 or 91

Averying 02-04-2023 11:54 AM
Quote:
Originally Posted by fryzia23 (Post 4034594)
bump an old thread, I need to to replace my charger and on the fence whether to go with the R or stick with C38-81 or 91

Which kit do you have? If it’s stage 1 u prob won’t get more boost out of a better supercharger unit.


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fryzia23 02-04-2023 02:00 PM
Stage 1.5

fryzia23 02-04-2023 02:19 PM
The only thing that’s stopping me from going c38r is the need of custom intake pipe. It’s tight as it is and adding another half inch thicker pipe, it would require a lot of custom welding and compensate for the bends around the engine mount. I think I’m just gonna upgrade to c38-91. Stage 1.5 has c38-81.

Elmo370z 02-04-2023 11:25 PM
Quote:
Originally Posted by fryzia23 (Post 4034607)
The only thing that’s stopping me from going c38r is the need of custom intake pipe. It’s tight as it is and adding another half inch thicker pipe, it would require a lot of custom welding and compensate for the bends around the engine mount. I think I’m just gonna upgrade to c38-91. Stage 1.5 has c38-81.
Then get a smaller engine mount lol it’s not rocket science.

fryzia23 02-05-2023 06:26 AM
It’s not that simple, those who have GTM kit know what I’m talking about. Modified mount already came with the kit to make room for the charger.

Elmo370z 02-05-2023 08:37 AM
Quote:
Originally Posted by fryzia23 (Post 4034615)
It’s not that simple, those who have GTM kit know what I’m talking about. Modified mount already came with the kit to make room for the charger.
Fair enough. That’s a different animal.


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