RJ MFG Supercharger kit Feeler...

2011 Nismo#91 · 11-30-2016, 02:35 PM

Quote:

Originally Posted by TopgunZ

3. Whipple - This has never been done and would open up an entirely new system to the platform.

Everything else has been done before. Hood is a problem but it's not insurmountable and I think it would look kinda cool. I don't see it cooling the compressed air well though.

RJ MFG · 11-30-2016, 02:50 PM

Quote:

Originally Posted by TopgunZ

Well the Vortech V3 si trim is rated at 775bhp (50hp more than that c38) and we know that it is impossible to get that on the 370z. Even with overspinning, a huge fuel setup and E85 we are 125hp away from that mark. So the 725bhp rating on the c38 doesn't mean much.

Adding headers and built heads would help a little, but will this come in the kit?

I am not trying to put this idea down. Just make sure that if you bring a centri unit to the forum, it can actually make the power claims you stated instead of having a bunch of guys waiting for a system that leaves them deflated.

We are actually referencing their (c38 -91/92) compressor maps. We understand and made it noted that the limits would be topped out in the low to mid 600's. Increasing the volumetric efficiency of the motor is key. Plus guys have made mid 500's on GTM's kit on the smaller C38 - 81 units which is what GTM sold as the stage 2. The Stage 3 C38 - 91/92 was never sold publicly. One of our customers has the only STG 3 kit ever sold by GTM. Even then the C38 - 81 was not pushed to its limits. The limitation came with not having access to pulleys and transparency in their kit. They used cheap parts including their intercooler. We firmly believe the C38 - 91/92 supercharger has the capability to put a solid 550whp and reach into the low to mid 600's maxed out.

For the Vortech it is going to be debatable on which unit we would have to use based on space limitations. However, if we can fit it we are looking toward the V7 trim if it could fit... But there doesnt seem to be much of any interest in this platform.

When it comes down to it we need to focus on efficiency of the kit and the motor. The more efficient we can make both the more power there is to be had. Once we have tested our kit we will put out official numbers and our ratings will be conservative. We only want to sell what we know everyone will make.

RJ MFG · 11-30-2016, 02:52 PM

Quote:

Originally Posted by 2011 Nismo#91

Everything else has been done before. Hood is a problem but it's not insurmountable and I think it would look kinda cool. I don't see it cooling the compressed air well though.

You have to use a water to air cooler. Similar to what stillen did in there kit and what whipple does in there kits.

RJ MFG · 11-30-2016, 02:54 PM

Quote:

Originally Posted by B&W_Evader

California guy here, not going to deal with non-CARB vehicle again.

Needs to be a CARB kit
Needs to have A2A cooler
Needs to have MAF and temp sensors in the right place
Needs to be quiet, get rid of the rattly pulley/bearing noise
Avoid needing a $1000 ECU Tuning package
Avoid needing a bunch of misc upgrades to support kit
Produce a real 500WHP with stock Cat and aftermarket exhaust

We will see what we can do.

Senna-F1 · 11-30-2016, 03:30 PM

Can you talk a little bit about efficiencies of each option? I want my engine to last for 10+ years and 150,000+ miles. I'm looking to limit TQ to 350 FT/LBS @ the wheels. One of the reasons I would prefer turbo over SC is because with the SC, the engine needs to produce the extra power needed to run the SC, so I give up some extra wear and tear for a given HP target compared to a turbo. I've read differing views on how much power is being robbed, but that would be good info to have when comparing to turbo and even among the available SC options you've listed here.

avery370z · 11-30-2016, 04:54 PM

Id cut my hood in a minute for a roots type supercharger!!!!!

xxAGAVExx · 11-30-2016, 11:26 PM

Option 2 as I'm only looking for something in the 500 whp range, but I got not problem cutting my hood for a sweet blower at an affordable price.

Sent from my iPhone using Tapatalk

RJ MFG · 12-01-2016, 09:20 AM

looks like Roots Supercharger is making a come back.

Senna-F1 · 12-01-2016, 10:55 AM

Quote:

Originally Posted by Senna-F1

Can you talk a little bit about efficiencies of each option? I want my engine to last for 10+ years and 150,000+ miles. I'm looking to limit TQ to 350 FT/LBS @ the wheels. One of the reasons I would prefer turbo over SC is because with the SC, the engine needs to produce the extra power needed to run the SC, so I give up some extra wear and tear for a given HP target compared to a turbo. I've read differing views on how much power is being robbed, but that would be good info to have when comparing to turbo and even among the available SC options you've listed here.

Well, let me see if I can answer myself. From Whipple's own page.

https://whipplesuperchargers.com/ind...&product_id=98

BTW, Whipple is not a Roots supercharger, it's a Twin Screw.

lj909 · 12-01-2016, 11:12 AM

Quote:

Originally Posted by Senna-F1

BTW, Whipple is not a Roots supercharger, it's a Twin Screw.

Um, let's not start taking about "roots" or "twin screw"
There ALL top mount positive displacement superchargers

Senna-F1 · 12-01-2016, 11:51 AM

Quote:

Originally Posted by lj909

Um, let's not start taking about "roots" or "twin screw"
There ALL top mount positive displacement superchargers

*They're* also different. I would not want a Roots type system. I also just voted for the Whipple. I think everyone should read up on the differences, and then vote for the Whipple Twin Screw.

SS_Firehawk · 12-01-2016, 12:59 PM

I'm not against the twin screw option and its benefits, but cutting into the hood for clearance cuts out a lot of potential customers. So now you have to buy a new hood or be a redneck and run around with a hole in your hood to fit your supercharger.

TopgunZ · 12-01-2016, 01:04 PM

I liked the stillen hood for the the 350z when i had their top mount sc. I even left the hood on after I took the sc off and went turbo. Got lots of compliments on it too and stood out from the rest of the Z's, Both visually and audibly. Oh how I miss that sweet sweet formula 1 whine!

Senna-F1 · 12-01-2016, 01:13 PM

New hood or hole in hood are not the best options.

http://www.thezstore.com/page/TZS/PROD/50-1988

RJ MFG · 12-01-2016, 02:25 PM

Given the interest we may do both. The twin screw and the rotrex have their advantages.

View Poll Results: What kind of Supercharger kit would you like us to make?
Rotrex C38 based system	54	23.79%
Vortech/Procharger Based Kit	40	17.62%
Whipple Positive Displacement Roots Kit	109	48.02%
I dont want a supercharger.	24	10.57%
Voters: 227. You may not vote on this poll

11-30-2016, 03:30 PM	#20 (permalink)
Senna-F1 Enthusiast Member Join Date: Jun 2016 Location: Cary, NC Age: 53 Posts: 425 Drives: 370SC,EliseSC,MR2T Rep Power: 50	Can you talk a little bit about efficiencies of each option? I want my engine to last for 10+ years and 150,000+ miles. I'm looking to limit TQ to 350 FT/LBS @ the wheels. One of the reasons I would prefer turbo over SC is because with the SC, the engine needs to produce the extra power needed to run the SC, so I give up some extra wear and tear for a given HP target compared to a turbo. I've read differing views on how much power is being robbed, but that would be good info to have when comparing to turbo and even among the available SC options you've listed here. Scooped likes this.

11-30-2016, 04:54 PM	#21 (permalink)
avery370z Base Member Join Date: Mar 2014 Location: Fort Worth,Texas Posts: 153 Drives: 2014 370z w/ Sp Pkg Rep Power: 11	Id cut my hood in a minute for a roots type supercharger!!!!! 370Zsteve, James10694, imazman and 1 others like this.

11-30-2016, 11:26 PM	#22 (permalink)
xxAGAVExx A True Z Fanatic Join Date: Nov 2012 Location: Tampa Posts: 1,036 Drives: 09 370Z BLK M6 Rep Power: 53924	Option 2 as I'm only looking for something in the 500 whp range, but I got not problem cutting my hood for a sweet blower at an affordable price. Sent from my iPhone using Tapatalk __________________ l 09/6MT l BP Twin Turbo Kit l E-85 w/Fuel Return l FI 18" Res CF CBE l Powertrix Ultra-Lite Coilovers l Wavetrac LSD \| Lots of SPL and Carbon Fiber \|

12-01-2016, 09:20 AM	#23 (permalink)
RJ MFG Enthusiast Member Join Date: May 2016 Location: Tampa, FL Posts: 253 Drives: 04 Nissan 350Z CS M6 Rep Power: 284	looks like Roots Supercharger is making a come back. James10694 and imazman like this. __________________ Contact us: https://www.facebook.com/rjmllc/?fref=nf

12-01-2016, 12:59 PM	#27 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	I'm not against the twin screw option and its benefits, but cutting into the hood for clearance cuts out a lot of potential customers. So now you have to buy a new hood or be a redneck and run around with a hole in your hood to fit your supercharger. wideglideleon and Nithmo like this. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

12-01-2016, 01:04 PM	#28 (permalink)
TopgunZ A True Z Fanatic Join Date: Jun 2012 Location: Minneapolis Posts: 2,651 Drives: 06 350Z , 09 370Z MT Rep Power: 6834	I liked the stillen hood for the the 350z when i had their top mount sc. I even left the hood on after I took the sc off and went turbo. Got lots of compliments on it too and stood out from the rest of the Z's, Both visually and audibly. Oh how I miss that sweet sweet formula 1 whine! __________________ ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

12-01-2016, 01:13 PM	#29 (permalink)
Senna-F1 Enthusiast Member Join Date: Jun 2016 Location: Cary, NC Age: 53 Posts: 425 Drives: 370SC,EliseSC,MR2T Rep Power: 50	New hood or hole in hood are not the best options. http://www.thezstore.com/page/TZS/PROD/50-1988 wideglideleon likes this.

12-01-2016, 02:25 PM	#30 (permalink)
RJ MFG Enthusiast Member Join Date: May 2016 Location: Tampa, FL Posts: 253 Drives: 04 Nissan 350Z CS M6 Rep Power: 284	Given the interest we may do both. The twin screw and the rotrex have their advantages. Zat_Zuma and imazman like this. __________________ Contact us: https://www.facebook.com/rjmllc/?fref=nf

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