COG drive setup for SC

TopgunZ · 12-18-2015, 02:17 PM

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?

Chuck33079 · 12-18-2015, 02:38 PM

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

TBatt · 12-18-2015, 04:44 PM

Quote:

Originally Posted by Chuck33079

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

A toothed drive belt will not slip.

JWillis72 · 12-18-2015, 07:16 PM

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.

swiss370Z · 12-19-2015, 01:42 AM

Very interesting THREAD!

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

):

- 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!

TopgunZ · 12-19-2015, 11:12 AM

Quote:

Originally Posted by JWillis72

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.

You looking to sell those by chance?

JWillis72 · 12-19-2015, 02:55 PM

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

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JWillis72 · 12-19-2015, 02:58 PM

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

Sent from my iPhone using Tapatalk

JWillis72 · 12-19-2015, 04:08 PM

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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TopgunZ · 12-19-2015, 05:34 PM

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

StillenZ84 · 12-19-2015, 08:34 PM

Quote:

Originally Posted by JWillis72

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

Sent from my iPhone using Tapatalk

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?

JWillis72 · 12-19-2015, 08:41 PM

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

JWillis72 · 12-19-2015, 08:43 PM

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

Sent from my iPhone using Tapatalk

clkio · 12-19-2015, 09:07 PM

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.

JWillis72 · 12-19-2015, 09:39 PM

Interesting, do you still run it?

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12-18-2015, 02:17 PM	#1 (permalink)
TopgunZ A True Z Fanatic Join Date: Jun 2012 Location: Minneapolis Posts: 2,651 Drives: 06 350Z , 09 370Z MT Rep Power: 6834	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? swiss370Z likes this. __________________ ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

12-18-2015, 02:38 PM	#2 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	I thought all it did was reduce belt slip. I guess that would increase boost if it was slipping on the grooved setup __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

12-19-2015, 01:42 AM	#5 (permalink)
swiss370Z Track Member Join Date: Jun 2011 Location: In the Mountains Posts: 649 Drives: VW UP! 1.0 Ltr Rep Power: 15	Very interesting THREAD! 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 ): - 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! __________________ /// ONE LAST RIDE /// R.I.P. FAIRLADY Z ///

12-19-2015, 04:08 PM	#9 (permalink)
JWillis72 A True Z Fanatic Join Date: Sep 2013 Location: Fort Myers FL Posts: 2,002 Drives: 2009 370Z yellow 7AT Rep Power: 45	It's a 30 tooth on the sc and a 34 if you want to see how that works with your plans. Sent from my iPhone using Tapatalk StillenZ84 likes this.

12-19-2015, 05:34 PM	#10 (permalink)
TopgunZ A True Z Fanatic Join Date: Jun 2012 Location: Minneapolis Posts: 2,651 Drives: 06 350Z , 09 370Z MT Rep Power: 6834	Awesome. Hope you get to use them but if not I'll claim them now. StillenZ84 likes this. __________________ ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

12-18-2015, 07:16 PM	#4 (permalink)
JWillis72 A True Z Fanatic Join Date: Sep 2013 Location: Fort Myers FL Posts: 2,002 Drives: 2009 370Z yellow 7AT Rep Power: 45	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.

12-19-2015, 02:55 PM	#7 (permalink)
JWillis72 A True Z Fanatic Join Date: Sep 2013 Location: Fort Myers FL Posts: 2,002 Drives: 2009 370Z yellow 7AT Rep Power: 45	I will be as long as my motor holds this week. Sent from my iPhone using Tapatalk

12-19-2015, 02:58 PM	#8 (permalink)
JWillis72 A True Z Fanatic Join Date: Sep 2013 Location: Fort Myers FL Posts: 2,002 Drives: 2009 370Z yellow 7AT Rep Power: 45	If you can wait to see what my motor does and everything is okay, I will sell them to you cheap. Sent from my iPhone using Tapatalk

12-19-2015, 08:41 PM	#12 (permalink)
JWillis72 A True Z Fanatic Join Date: Sep 2013 Location: Fort Myers FL Posts: 2,002 Drives: 2009 370Z yellow 7AT Rep Power: 45	That would depend on what other pulley you use with it and what impeller is used.

12-19-2015, 08:43 PM	#13 (permalink)
JWillis72 A True Z Fanatic Join Date: Sep 2013 Location: Fort Myers FL Posts: 2,002 Drives: 2009 370Z yellow 7AT Rep Power: 45	Vortech has a calculator on their website to try different set ups. Sent from my iPhone using Tapatalk

12-19-2015, 09:07 PM	#14 (permalink)
clkio Enthusiast Member Join Date: May 2014 Location: Cambridge ON Posts: 265 Drives: 09 370z M6 Rep Power: 11	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.

12-19-2015, 09:39 PM	#15 (permalink)
JWillis72 A True Z Fanatic Join Date: Sep 2013 Location: Fort Myers FL Posts: 2,002 Drives: 2009 370Z yellow 7AT Rep Power: 45	Interesting, do you still run it? Sent from my iPhone using Tapatalk

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