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Rotrex C30-94 supercharger install and modification: pulley choice

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Rotrex C30-94 supercharger install and modification: pulley choice

 
Old 11-19-2018, 08:18 AM
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Originally Posted by pizzai69 View Post
This sure helps

Note that my acutal TTS Intercooler is "bar and plate" type. (see picture in previous post)
In my case, I want a track proof car, so cooling is important.

I asked directly TTS for advices: they told me that : "For a C30-94 376 hp is quite reasonable. The intercooler is the restriction deliberately to limit power. So going to our Race intercooler would increase power". I am waiting for a quotation on the race IC, as I can't find it on the online shop.
Ok. We'll that's good to know. I've never seen the Supersport kit's I/C. My TTS Race kit's I/C has a tube and fin core. Excellent!

Good luck then!
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Old 03-03-2019, 04:34 AM
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Sorry 06S2k07Si you will be dissapointed
I have had already too much work on the car (full bushings change etc.), and it is on jack stands since 1 year now! (got a child)

So I have begun assembling the supercharger kit as it is, with no major modification: no big IC, no E85...
Just a few adjustments on pipings and fixations.

Here is how it looks when pre-assembled: nothing fixed because I have to run the car NA to the technicial inspection soon.



I am just going to take care about the intake: change this extra-small foam filter (don't like it) by a traditionnal one. And try to install aluminium panels to feed it only wish fresh air.
Also have to install the OCT, rotrex oil accessories, and engin oil cooler.

I hope I will have some time to finish the car in about 2 months (including mapping).
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Old 03-07-2019, 06:50 AM
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I tried designing some heat shields for the intake, which would look quite similar to the KN FIPK but adapted to my rotrex and pipings.



I think I will forget this idea: difficult to adjust, and not really sure about the gain it would produce...
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Old 03-07-2019, 07:40 AM
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^^ Yeah that is a dinky filter! Definitely a restriction there. What is the pipe diameter? I have a big brand new AEM dryflow which may fit. Or will with a coupler of sorts. I've got a couple other filters as well, which would require a 6" velocity stack coupled in-between to accommodate. All stuff on my shelf I don't foresee needing.

Last edited by s2000Junky; 03-07-2019 at 07:44 AM.
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Old 03-07-2019, 10:07 PM
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This rotrex is a C30-94 so the intaje pipe is 3". This pipercross foam filter is 3" inlet, but quite small overall and I don't like foam...
I plan to go with this K&N filter:
https://www.knfilters.com/search/pro...x?prod=RE-0910


AEM dryflow filter are quite similair to this, I think ?
Do you think I should go to a velocity stack + bigger filter ?

My problem is the diameter of the filter base. Depending on the excat position of my silicone and aluminium intake parts, the filter is quite near the oem fan. I mesured that I should stay with a filter which is about 5.1 to 5.5" of base diameter , if I don't want it to touch the fan (and the heat shield, if I do it...). I guess the velocity stak solution will be bigger than that.

Last thing: do you agree that my heat shield prototype (K&N FIPK style) is useless ? or should I keep the idea of doing it ?
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Old 03-07-2019, 10:12 PM
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Actually, something like this may fit: the length of the inlet diameter adapter can help me move the filter away from the rad...
https://www.kseriesparts.com/SK2-343-99-0600.html
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Old 04-26-2019, 04:00 AM
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News I need your help again

I can't fin any tool to estimate the boost I should have with my pulley sizes : does this tool exist ??
I know the old KW C30-94 high-boost pulley was 100mm and provided 10psi. But I have a 105mm one, and would like to know what boost to expect...

I also had a long conversation with a serious tuner I would like to work with.
He explained me many things, and I have questions about some of them:
  • my injectors (RC750) are not the best, and are too small for E85 application. Because of the cost of the ID1050x + flexfuel sensor, i don't plan to change them and would like to stay on pump gas (called SP98 in France).
    This tuner really really really (... ) recommends me to go with E85 , not only for power but above all for reliability (cooling, knock protection).
    Is it really that necessary ?! I am not ready for the cost, and would like to stay on a reliable (road & trackday) SP98 tuning...
  • This guy would like me to install one EGT sensor to each cylinder ... in order to check/troubleshoot the temperature by cylinder, in case there would be a problem on fuel injection, air intake, or compression or else...
    I think this is extreme, and too much job for me. I did not see many people do that on s2ki...
    Is that really usefull for the tuning ? Maybe only one EGT on the downside of the header could be enough ? Or no EGT at all ?! (my preference, because of job)
  • He also recommends a fuel pressure sensor, in order to set a failsafe security in the ECU (in complement of failsafes with oil T°, oil Pressure and wideband). Some job again... for a very rare problem, isn't it ?
  • The C30-94 TTS kit I bought made 376bhp and 322nm on the pervious ap1 it was fitted, with the 105mm pulley and TTS Supersport FMIC.
    This tuner thinks the dyno was optimistic and I may not get as high resultats as that...
    What do you think of these numbers ?

Other question: did somebody ever monitor the rotrex oil temperature ? I plan to do it (a sensor connected to ECU) because I don't know if the 9 row oil cooler provided with the kit will be enough on track to keep under 80°C...
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