Kraftwerks Any interest on these here?
 

We are thinking about having a BIG sale on the KRAFTWERKS supercharger product line

https://www.miataturbo.net/attachmen...ine=1320341454

The KraftWerks Miata Base supercharger kit makes this great little sports car reach a new performance level it has never seen. Using the compact Rotrex C30-74 supercharger, this CARB-Pending kit kicks your canyon and track fun way up! The extra power is felt throughout the ENTIRE rev range, and never quits pulling. All required hardware and electronics are included, so there is absolutely nothing else needed with your kit. Bolt it on and go FAST!

Here is there race kit the make for all generation Miata's This is there RACE KIT
http://www.shop.kraftwerksusa.com/90...it-888-130.htm

Not to rain on your parade but i have yet to see a kraftwerks car get anywhere close to any kind of power band i would pay money for. Would post this over on miata.net or club roadster as they are the ones that buy status not speed.

There WAS a lot of interest....You're about a year too late.

Hell i wanted to switch from a twin screw then the dyno charts started showing up and they where :rofl:

LOL well i was just throwing it out there.

What would you guys like to see sales on?

Everything

I like your enthusiasm.
If you can deliver bottom prices on quality parts like you say you can, you'll do well here.

Have you looked into turbo kits or intercooler kits? Piecing together a quality intercooler kit using ebay piping and core but "fabbing it up" yourself would probably sell pretty well if you price it under begi and fm's kits that start at 400

I need a clutch and flywheel. I want perfect streetability, at least 400 ft lbs static holding load, under 20lbs total clutch/ flywheel mass, infinite rebuildability, and I want to spend under $300. What can you do for me?

Pm'd ya Vehicular!

18PSI thanks for the kind words. We are here to offer support and share our passion for racing.

Let us know what sales you would like totsie! lol

Most everyone that slams the rotrex hasn't driven one. That aside, the base kit is expensive for the power level, and the failure of Kraftwerks to provide the promised upgrade path for the expensive base kit hasn't helped any. Were I a vendor I'd stay away from reselling Kraftwerks stuff at the moment as they seem to be imploding.

I built my motor with Rotrex in mind, (10:1 CR). I liked the simple, trackable reliability. I know I'm in the minority here, but I'd like a sale on a race kit.

With that said. I'll second the I/C idea.

I think the main issue people have is that they don't enjoy making full boost by redline. It would turn me off too. I have driven a few centrifugal cars before, but the last two were procharged corvettes and that's a different world.

The race kit value sould be $2000 max to be sold .

+1

Some sales on orange hose?

I like yellow hoes, myself.

Like Simpson hoes?

:facepalm:

http://www.wireandsupply.com/product_p/par-exofj-20.htm

"Parker Firesleeve is a flame resistant sheath that protects the hose from extreme temperature conditions. Firesleeve easily slides over hoses and readily expands over fittings."

We usually use the reflective metal absorbing covers. We will look into it.

+2

I had a C30-74, no restrictor, 70 mm pulley, pumped 13 psi at 6000, 224 hp

BUT


belt tensioner fractured, next idler started wobbling, then starting eating belts, got so bad could not get more than 100 miles on a belt

jerked that junk off, took car out to Spring Branch for a GT2860RS

Sounds like what my car has been doing since day 1. I just replaced the tensioner, idler and Gates Blue belt on Sunday (12/19) to the tune of over $150 and guess what? Ate the belt on my no-boost test drive. :vash:

Implosion happened a while ago.

Bought my C30-74 base kit from 949, probably the last one they sold before the KW split. 949 does not offer support, Kraftwerks does not offer support, Skunk2 will sell you parts but I've not seen much support. I'm in contact with them currently but its not going well. I'm still having problems and they have no solutions. I don't bitch about it around here because its a turbo forum (I should start a thread here so the turbo guys can laugh at me :loser: ) Go to Miata.net and look in the supercharger section. Do seperate searches for "Rotrex" and "Kraftwerks" and see what you are in for. When I spoke to Emillio back in April about my purchase, I believe he said there were about 200 KW Rotrex miata kits on the road spread over the US. That makes for very little concentration of knowledge, other than on the internet. No one has any real experience troubleshooting these things except the Jacksons and Kraftwerks, and they pretty much said "fuck-all" to their customers and walked.

I'm not trying to shit on a vendor here, I'm just trying to let you know what's up from a current owner. I've been quietly suffering with this mess since April. This is possibly the worst upgrade I've done to date. The kits have some issues that need to be worked out and no one seems to want to stand up and "make it right" for the customers. I had an engine build planned for 2011 to match the smaller pulley, larger injectors, MegaSquirtII and intercooler that are sitting in my garage, but I'm thinking of selling it all in disgust. If the stock kit has these issues, no way I'm going to bother to upgrade it, or do the upgrades to support it. My rotrex may literally come off the car this week so I can drive the 800 mile round trip to my folks house for the Holidays.

:2cents:

My car seems to be holding together just fine. At more power and more RPM. I still can't figure out all these belt issues people seem to be having. I've done road trips in my car, a shit load of track days, hill climbs... what have you.


At the end of the day the Rotrex is not for everyone. I like it.

I knew you would pop in here eventually. You should come fix mine and show me how its done :makeout: :giggle:

Actually, when mine was running, it was a fucking blast to drive. Everything as advertised and more. What killed it for me was lack of any kind of support or assistance when things went sideways.

You should have PM'd. What exactly is your issue? I'm not doubting that people have had pulley problems.. I've seen the photos. I just haven't so I don't really get it.

I may have to eat my hat and edit my earlier post. After making the post yesterday I got fired up and angry again and emailed Skunk2. I got a reply this morning from a tech named Brian who is helping me out at the moment. He's the guy I ordered parts from a week or so ago. The Skunk2 guys want me to pull the mounting plate and idler setup and send it in after sending them pics. It's a bitch but its at least something.

My setup is eating belts like its going out of style. I consistently loose the first rib (furthest from the engine, closest to the front of the car) within the first 10 minutes of running on-road so its not rubbing on anything. At idle it will go all day and track straight. It's the '00 in my sig with AC and PS. I've seriously considered starting a thread here in the SC section... the signal:noise ratio is far better here than over on m.net.

Been thinking about eliminating the AC and PS this winter, I've got a '03 rack sitting in the garage waiting for me to get up the nerve to make it happen. Everyone that's had belt or pully issues has AC and PS, but I'd like what I bought to work as advertised.

What really grinds my gears is the fella on the local forum with a LSx & T56 for sale for $3800... that's only $500 less than my C30-74 and just as emissions complaint :vash:

Do you have the kraftwerks machined pulley? I'm starting to think the reason I have not had problems is because I run the actual rotrex pulley. it's 8 ribs but it works. Perhaps the design was off on the pulley.

Started my own thread... with blackjack, and hookers!

https://www.miataturbo.net/supercharger-discussion-38/eo2k-contemplates-universe-his-rotrex-why-they-both-fail-62346/

I think the belt issues boil down to either everything lines up properly, or it doesn't. Also some have gotten bad autotensioners. I've put 6k on mine now, and noticed some scuffing of the back of the belt. I took the belt off and examined things; my autotensioner was slightly misaligned. I have shimmed the lower mounting pin and it looks ok now. The tensioner itself seemed to be fine, no wobble or play in the pulley, spun freely, etc. I will replace the belt and see how the new one wears.

Good to hear some of both sides guys, thanks for the input.

-Sam

Was really interrested, ordered BEGI turbo stuff after the summer because of prices. Still think that the rotrex is nice due to driveability (as in sloppy mid corner throttle) and "not eating fivespeeds-wise".

Probably less exhausting to drive in anger than a turbo car, my choice for long stints or endurance (based on former turbo track car, no miata turbo track experience yet).

Slower cars are generally less exhausting to drive in anger, yes. :)

(Given the same peak power, a turbo car will be significantly faster than a Rotrex-powered car)

I was pretty sure that you would say that ;)
Sure they are, seing that it takes less fiddling with the right pedal :)
Btw, I would love a clip with The black car going up against the 949 rotrex, just for kicks.

The only thing slower then a kraftwerks miata is a stock miata. Twin screw or don't bother supercharging.

The closest thing to Theseus is Trackdayhookey's ~400whp Rotrex, and even he will freely admit that my car pulls much harder in a straight line than his does. We compared power curves on m.net and I make more power from idle to 6800rpm.

The Rotrex does lots of things well, but torque is not one of them.

Haha... yes.

Now sav, in a tight track how does it compare to TDH's car? All things considered...

I'm pretty confident in saying my Rotrex'd car will walk on your "superior" twin screw car. :makeout:

^^ In for results!

Sav: Got a launch date for your TSE turbo goodies yet? ;)

Tight track, long track, doesn't matter - I have the power advantage. On an autocross course he might have an applied power advantage, but that's really nitpicking.

No release date on the TSE turbo kits. Right now our goal is Spring 2012. You'll see photos of pre-production parts on a race car before we confirm a release date.

About time you started calling that car something other than "The Black Car." :)