MP62 Supercharger System by Moss Motors questions

sprx3 · Postby **sprx3** » Tue Jul 17, 2007 11:22 pm

Hey guys does anybody have one of these or know about these things?

ive been looking at the JR s/c kits but im told that the power isnt the best from the JR kits & any upgrades go backwards & the Moss kit has around 25hp more then the JR which should put the car pretty much where i want it...

could anyone give there experiences with either or kits?

or should i just go turbo?

any feedback would be great...

cheers
Zoran

tk421 · Postby **tk421** » Wed Jul 18, 2007 1:07 am

The Moss Kit is a new one (hotside) based on a 62 cubic inch supercharger. The old JR was a 45 cubic inch. The 62 flows a lot better than the 45 as well and has more potential for boost (probably 20 psi or even more really).

I believe there is the the odd brp kit in Oz but I don't think anyone apart from ChrisP in Adelaide and myself have an MP62 based kit (we have the Fast Forward Kit). Nobody over here would have the Moss Kit as yet.

For my FFS coldside presently I am waiting on my install to be finished which has had the odd space related challenge - therefore no impressions from me yet (Chris loves his though and recently achieved the target hp numbers). On an NB8A there is an issue with location of the brake lines requiring some re routing, on an NB8B whilst its a squeeze there are far less issues.

Re the Moss kit or Turbo? Depends on what you are after. If ultimate HP was my only goal I guess I would have gone turbo. It wasn't though. Basically I wanted 140kw atw & cool noises coming from under the bonnet along with factory driveability etc. I have no doubt in my case that a turbo would have been a bit easier to fit in hindsight.

For me the road less travelled was the one I wanted to take to achieve my goals though hence I ordered the FFS kit. Tom the guy that runs the business also provides great service which is certainly a commodity.

As a counterpoint there are also heaps of people on this site that love their turbo kits and there are certainly many with impressive HP numbers. I'm sure they are great to drive but given the choice it wasn't for me.

If you are unsure of which way to go maybe you should experience a Supercharged and Turbo'd MX5 via the passenger seat of some friendly club members and decide for yourself on that basis.

Comparing the Moss to the FFS. The Moss kit being a hotside is more conventional, therefore you will have far less install issues. The PC pro that comes with the kit by all reports is a great piggyback (FFS kit has two). You can also intercool it which you can't do with the FFS coldside.

That said the other thing you might want to consider is that if you prefer a hotside, Tom from FFS also markets one these days similar in config to the Moss. This also comes with a PC pro (x1 or x2 I think). The postive about both Tom's kit's is that there are people out there that are actually using them at the moment. Tom has done a lot of R & D to make sure they work.

The Moss kit whilst basically the same is somewhat of an unknown at this stage (there could be subtleties in the config of the PC pro for example). I am also unsure of whether the moss has a 4 rib or 6 rib pulley, 6 rib is better (FFS use 6). The Moss kit does have timing control as well though which is an asset. The FFS kit is a few hundred USD more expensive which may or may not matter to you.

Something that was important to me is that the coldside kit was carb (emissions) approved in california. I believe Tom is in the process of going for carb approval for the hotside. If you plan to get it engineer certified (and really, you should) this could be an advantage - not to say the Moss kit wouldn't be capable of passing an Aussie emission test also however.

To further muddy the waters \"16bit\" is currently having bulletsportscars install a rotrex S/C on his car. His thread is entitled \"Mule Car\" just below. Sounds like it could be interesting. If After deciding which way to go you favour a S/C then it might be good to see what his results are like at least. It will after all be locally available.

Hope you find the above vaguely useful

Steve

16bit · Postby **16bit** » Wed Jul 18, 2007 9:31 am

should have mine back on the weekend - I will let you know how it went. being a prototype kit prices on it will not be available just yet but it will not be that cheap I would think. That said it is a comprehensive kit with full piggy back - front mount intercooler - oil cooler for the supercharger and nice black piping! And you can say you have the same brand and type of supercharger as CCX!

tk421 · Postby **tk421** » Wed Jul 18, 2007 10:16 pm

Or if you end up with an MP62 based kit you will have the same blower as the Lotus Exige 'S' (ie the model on Top Gear last night). Luv the whine - but hey.. I'm biased :mrgreen:

Steve

yarnmx5 · Postby **yarnmx5** » Thu Dec 13, 2007 9:04 am

just was reading about your supercharger install experiences. Was wondering if you were able to get them \"emissions approved\". Same old story for SA and NSW.

I reckon there is a bit of a niche market here for a company to get a kit that is legal in all states...like they have for superchargers on commodores etc.

Expected rwkw for NA6?? any ideas?

Cheers.

yarnmx5 · Postby **yarnmx5** » Thu Dec 13, 2007 9:04 am

just was reading about your supercharger install experiences. Was wondering if you were able to get them \"emissions approved\". Same old story for SA and NSW.

I reckon there is a bit of a niche market here for a company to get a kit that is legal in all states...like they have for superchargers on commodores etc.

Expected rwkw for NA6?? any ideas?

Cheers.

Steampunk · Postby **Steampunk** » Thu Dec 13, 2007 9:50 am

I though JR was putting themselves on hiatus re selling superchargers as they are experimenting with new-age superchargers (the ones that look like turbos), and therefore have offloaded all supercharging sales and queries to Moss. No?
From what I read, one of only a few hassles is having to customise the throttle cable and mountings.

16bit · Postby **16bit** » Thu Dec 13, 2007 11:11 am

yeah jackson are in development with rotrex units now - i think they have completed a few kits. s2000 has one for sure.

tk421 · Postby **tk421** » Thu Dec 13, 2007 10:17 pm

yarnmx5 wrote:just was reading about your supercharger install experiences. Was wondering if you were able to get them "emissions approved". Same old story for SA and NSW.

I reckon there is a bit of a niche market here for a company to get a kit that is legal in all states...like they have for superchargers on commodores etc.

Expected rwkw for NA6?? any ideas?

Cheers.

Tom from FFS currently has a kit in test for the NA6. He's expecting 170hp at the wheels or more due to the lower comp pistons in the NA6 allowing more boost. At last count I think the car made it to 175hp however there was something wrong with the "mule" engine which is being sorted out.

I will be going for my second emissions test when I get round to booking it. My fuel curve looks alright and most of the emissions control is down to the cat (my exhaust is brand new). The fact that I have the factory ecu still in place also means I have whatever emission controls are built into it. My fuel curve looks a lot like a factory SP or SE one (we compared them on the dyno). As a result I'm not expecting any issues. I'll be sure to put up a "hip, hip, hooray" post when it does pass though

yarnmx5 · Postby **yarnmx5** » Thu Dec 13, 2007 10:22 pm

As a result I'm not expecting any issues. I'll be sure to put up a \"hip, hip, hooray\" post when it does pass though

Good luck...please let us know....I am VERY keen to see if it gets through....I want to do this but dont want to be a trail-blazer.

I assume you are in NSW not qld, as it appears qld has less stringent rules.

Regards[/quote]