Topgunz - air to air upgrade

Pauly Z

Does anyone know where to find idler pulleys by dementions? Autoparts store are useless.

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Custom Air to Air Stillen SC Setup, CJM S-1S FRS, ID1000 Injectors, Aeromotive 340 Stealth Pump, Test Pipes, Topspeed Exhaust, Z1 Oil Pan Spacer, Swift Springs, Adjustable Rear Camber Arms, 20 and 25mm Spacers, Custom Gauges, and Ecutek

Pauly Z

I just measured the supercharger pulley on the serpentine side and it is 2.9" . Is this the normal pulley? I thought it was 3.1 or 3.2". Isn't this the pulley that gets changed to the 2.75" one for the 9 psi?

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Custom Air to Air Stillen SC Setup, CJM S-1S FRS, ID1000 Injectors, Aeromotive 340 Stealth Pump, Test Pipes, Topspeed Exhaust, Z1 Oil Pan Spacer, Swift Springs, Adjustable Rear Camber Arms, 20 and 25mm Spacers, Custom Gauges, and Ecutek

TopgunZ

My Serp pulley is a 2.90" also. I bought my kit used too. I have that coupled with the 3.0 SC pulley and 3.2" JS pulley. It makes 12psi with the SI trim.

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ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

JWillis72

It should be 3.2 or 3.1, I tried a 2.75 but that when my supercharger blew up. Don't use that with the 9lb pulley, that pulley alone is probably over spinning it or real close.


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Pauly Z

I haven't changed any pulleys. They are all standard. Isn't the one on the serpentine side the one to replace for the 9lb upgrade?

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Custom Air to Air Stillen SC Setup, CJM S-1S FRS, ID1000 Injectors, Aeromotive 340 Stealth Pump, Test Pipes, Topspeed Exhaust, Z1 Oil Pan Spacer, Swift Springs, Adjustable Rear Camber Arms, 20 and 25mm Spacers, Custom Gauges, and Ecutek

JWillis72

Did you buy it used?


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Pauly Z

Yes I did. I measure them all earlier. The ones on the Jack's haft and supercharger (8 rib ones) are around 3.1". The one on the serpentine side is around 2.9". I'm only seeing 7 psi boost.

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Custom Air to Air Stillen SC Setup, CJM S-1S FRS, ID1000 Injectors, Aeromotive 340 Stealth Pump, Test Pipes, Topspeed Exhaust, Z1 Oil Pan Spacer, Swift Springs, Adjustable Rear Camber Arms, 20 and 25mm Spacers, Custom Gauges, and Ecutek

JWillis72

Both on the jack shaft are the same size stock, I'm not positive on the size but I know it's in the big thread about a2a.

Pauly Z

Where did you get the pulley for the serpentine side?

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Custom Air to Air Stillen SC Setup, CJM S-1S FRS, ID1000 Injectors, Aeromotive 340 Stealth Pump, Test Pipes, Topspeed Exhaust, Z1 Oil Pan Spacer, Swift Springs, Adjustable Rear Camber Arms, 20 and 25mm Spacers, Custom Gauges, and Ecutek

JWillis72

I didn't, I only changed the supercharger pulley, I got that from Vortech.

TBatt

What size did you use and what was the boost?

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RJM pedal, Hotchkis Sway Bars, FI TDX, FOG Light, Z1 Slotted Drilled rotors, Stillen SC, Quaife ATB, Z1 Oil cooler, AEM Gauge Set, Galeforce gauge mount, Avant Garde M590 Hypersilver w/RE-11, TopgunZ A2A kit., ECUtek tuned by Seb: ROLL TIDE!

JWillis72

I broke the first supercharger with a 2.75 then changed to a 3.0 for the second one, it was around 10psi but not 100 percent positive. I have long tube headers on my car so it's going to be less than others will see with cats. I don't know that over spinning the supercharger caused the first one to go but I wasn't chancing it. At the track my car sees red line hundreds of times in a weekend so it takes a lot more beating than most street cars.

milkcow500

Well, looks like another set back. Looks like I'm not having the best of luck. The CJM S1 upgrade kit that was sent to me was missing a line, so my shop has to make one, since it would take too long to have Charles send one out.

I asked Charles a last minute question about possibly hardwiring the Walbro 450 and he told me that we should probably upgrade the wiring, since it runs very hot on stock and probably wouldn't last. Parts should be here on Tuesday, so I'm hoping this will be it finally.

EVOHUNTER

jack and charger should be 3.20" on both sides. stock.

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TBatt

My Turbo Supra buddy loaned me a book to read this weekend "Engine Management Advanced Tuning" Engine Management: Advanced Tuning: Greg Banish: 9781932494426: Amazon.com: Books

Great source of info about turbo and supercharging. No less than two places in there it states that air temperature must be measured post cooler as close to the intake manifold as possible. Way to go TopgunZ!

If you really want to understand the how and whys of boost, this is a must read! It is also well written and easy to understand the concepts presented.

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RJM pedal, Hotchkis Sway Bars, FI TDX, FOG Light, Z1 Slotted Drilled rotors, Stillen SC, Quaife ATB, Z1 Oil cooler, AEM Gauge Set, Galeforce gauge mount, Avant Garde M590 Hypersilver w/RE-11, TopgunZ A2A kit., ECUtek tuned by Seb: ROLL TIDE!