RJ MFG Supercharger kit Feeler...
 

Ladies and Gents,

As many of you know we pride ourselves in our products, workmanship, value and innovation. With that said we want to get your market feedback on whether we introduce another kit onto the market. We are looking into three platforms:

1. The highly successful Rotrex style kit that a previous manufacturer built upon. With this we would be starting every kit with a C38 sized supercharger. The max we could pull out of this Super charger would be somewhere in the low to mid 600whp range.

2. The votech or procharger style supercharger in either a V2/V3 trim or a C2 from procharger. This style kit like the other will be based on efficiency and performance. We will be doing a full air to air setup on this as well. We would be looking at a similar power level as well in the low to mid 600whp range.

3. A Roots style super changer using a (W175AX) trim. we would also be running an Air to water setup as well. This kit would require hood cutting as the space available isnt enough. There is also a likelihood we would have to redesign a strut bar for this kit as well. The positive of this setup is max boost for a larger portion of the powerband.

What we would like to gauge from the market is what you would like to see. What you would be willing to put your money on.

The kit we produce will be made 100% here in the USA. It will use the highest quality hardware and not break your bank. We want to produce a kit that the track guys can take on the track run a whole session of fast laps and not be worried about heat. For the canyon driver to be able to get out of the corner faster with linear power band and predictable traction. We are looking to build a kit that doesnt require a motor build to have fun in the forced induction family. It will be paired with safe and reliable tuning and will be designed for those who want to run headers or a new intake manifold...

So your options in the poll are this:

1. Rotrex design similar to what was produced earlier and is no longer available. (including pulleys)

2. A vortech or procharged unit more efficient than whats on the market.

3. A Whipple roots style system that would require cutting your hood...

What ever you choose, don't leave out the CA guys. Do the work, get the CARB cert.

We will definitely look into the CARB certification and requirements.

Would the kit have options to put a bigger blower to make more power.

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

I am curious what your plan is to get up to 650whp out of a c38 or v3. These have already been pushed to the ragged edge and it isnt getting close. Especially if you are going to pulley it to stay within the manufacturers suggested rating. The only chance of getting past the 600 mark is going with a V2 but even then you will need to overspin it way over its rated rpms, which has been done with good success on other platforms. But are you going to warranty it if you pulley it to do that?

F@ckin hell, just when I'm set on turbos this time around, y'all make me rethink my ideas. I really like the rotrex unit personally. I had the GTM Twin Supercharged kit, but the tensioner pulleys kept breaking, squealing, belts shredding, then the stock tensioner pulley broke too. I liked the quiet operation of the rotrex, it increased the volume of the car, so it sounded like a pissed of NA car till the bypass valves went psssshhhhh.

I would consider this heavily if the kit can make a promised 600whp, especially with you being local to me.

Voted

The C38 - 91/92 trim is capable of ~725Bhp and with the correct supporting mods such as headers, built heads, and a more efficient setup should net you in the 600whp range. Most of the stage 2 GTM kits got the smaller version of the C38. Not to mention that the GTM kit was open to the headers. This leads to the supercharger bringing in hot ambient air. Combined with a small cheap intercooler you will end up with hot IAT. If we were to do a C38 kit it would definitely have some changes to make.

As for the Vortech/Procharger kit. We are still up in the air on this and we have even thought of going to the V7 trim possibly. At this point we want to see what people are interested in. We do have a customer we are working with right now to fix the Stillen kit he has. I don't believe we have pushed these super chargers to their max yet especially given the lack of efficiency found in the competitions kits. But we will let our kits do the talking...

As for the positive placement unit. We are a huge fan of this idea. However, there are space constraints to deal with. We would truly need some interest from the community to proceed further. This has a lot of advantages to it and we would like to bring something new to the table.

I like the idea of the c38 and the whipple! Lol no one likes the second option lol

Interesting.

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? :ugh2:

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.

I like he idea of the Procharger, but keeping it under the hood isn't in our favour. Otherwise I'd be all over it like white on rice. That is if I hadn't just committed to the V3 route.

I voted in the poll because it says "What kind of Supercharger kit would you like us to make?". And I voted for roots style because I say kudos to innovation - too bad it'll take a lot of work.

However, I don't think I would buy a SC for my Z.

Rotrex!!! C38 is a great unit
I wish they made a c40 lol ��

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