COG drive setup for SC
 

Most of you know I am running a stillen kit which I have fabbed over to an air to air setup. I made 490whp with the kit on 9.5psi. However, I have a built motor and would really like to put it to good use. Now I can obviously go turbo, which I have already done in the past with this car, but I'd like to keep pushing this kit.

The problem is that I believe I am already overspinning the SC by just a tad over recommended rpms. This is not a track only car so I am not sitting in the high rpms on it for most of its use so that's not really a concern the way it sits.

I am looking for other options to get more psi out of it though. One route would be to swap the V3 out for a different unit.

However, I know guys have gone the cog route with some success. I am a bit confused by this however. How does this create more boost? If the impellar is spinning at 60K and maxed out with a groove belt and makes 10psi then how does a cog setup make it produce more boost?

I thought all it did was reduce belt slip. I guess that would increase boost if it was slipping on the grooved setup

:iagree: A toothed drive belt will not slip.

You can do both reduce slip and spin it faster but you would need to rebuild the SC to handle the speed. I have a set sitting here but later realized it would be to much boost, I believe the info is in the air to air thread somewhere. I think it was Evohunter that told me where to get them.

Very interesting THREAD! :tiphat:

We are the idea in spring also transpose
Would be great if someone can provide Information

Which setup for which area (9, 10 or over 10 PSI :tup:):

- Where to buy (Vortech etc.)
- Which part number (type, etc.)

Cog Style Supercharger Pulleys - Corvette/350Z/Infiniti G35 | Vortech Superchargers

And where can you buy the best parts for the upgrade of the superchargers?
(Bearing etc. from 928 Motorsports, Vortech etc.)

THANKS for the information!

You looking to sell those by chance?

I will be as long as my motor holds this week.


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If you can wait to see what my motor does and everything is okay, I will sell them to you cheap.


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It's a 30 tooth on the sc and a 34 if you want to see how that works with your plans.


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Awesome. Hope you get to use them but if not I'll claim them now.

With that setup are there any spacers that are involved or are they a direct replacement? Obviously there would be no slip but how much actual boost is created with them?

That would depend on what other pulley you use with it and what impeller is used.

Vortech has a calculator on their website to try different set ups.


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Cog setup was a bit*h. Constant belt ripping and slipping, took almost eight month to get a bracket to stop that. I wouldn't run it.

Interesting, do you still run it?


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no, I have a aam twin turbo now 680 whp :) I sold the supercharger to a forum member with the stock gears as well and told him yo run stock pullies if he doesn't want to pop his stock engine.

Clkio, we might need your experience on this bracket. Was it getting chewed from belt slip? If not, why was it getting damaged?

I follow this (Cliko) Thread: :tup:

http://www.the370z.com/forced-induct...ly-chewed.html

It was either slipping or when u tight it, if would not come off but shredd under WOT. It was a nightmare. You will have to build a bracket and keep adjusting it until you get it right. IT was a nightmare

The supercharger bracket flexes cause it so thin (**** design). So the bracket u design have to centre the belt so when it flexes, the bracket will prevent it or allow it to only move just a bit but then u fine cause the belt is in the middle and won't rub the pulley. Is it worth to do, NO! If I can go back with that setup, I keep the kit how it was.