Topgunz - air to air upgrade

TBatt

If you are going with the A2A upgrade from a stock Stillen kit and go the 9psi route you will need my kit to prevent belt slippage. You will be driving the supercharger with about 60 hp and the belt will slip. Some have been slipping at 8 psi.

The stock Nissan belt tensioner will take up the slack of going to a smaller jackshaft pulley (Stillen 9psi) but the contact area of the drive belt goes down and that will cause slip, Add in the extra load on the belt to drive the SC faster and more slip.

To try and keep things simple, the serpentine belt is the main drive belt and is a long 7 rib belt that connects the crankshaft pulley to all of the other main drive pulleys (including the supercharger jackshaft).

The other belt is the supercharger drive belt (small 8 rib belt) that connects the jackshaft to the supercharger. You can get to 9psi by replacing the SC pulley with a 2.95 inch pulley from Vortech (part number 2A038-295). If you go that route the drive belt tensioner will not have enough adjustment range to take up the belt slack due to the SC having a smaller diameter pulley. To fix that you will need to replace the idler pulley on the SC drive with a 76mm (Gates 36225).

I'm running the 2.95 Vortech pulley along with my extra idler pulley setup and am getting close to 9.5 psi. YMMV

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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!

MoulaZ

Speaking of your kit. Thought I'd share what I found recently. Don't know if you recall but I mentioned that I had an unusual loud whining noise after switching to your kit. Turns out some parts of the belt had sections of the sepertine teeth missing.

I ended up checking all idlers, 2 of them had bad bearings, 1 was atrocious and probably the reason for the noise (it was the smooth idler, not the 2 grooved ones). Could this have caused the damage with my belt or did the belt make the bearings worse?

Also, since as of tomorrow I'm a Boosted Performance Snail member, the SC kit is for sale, but I'd like to replace the belt for the unknown buyer. What is the belt model?


Cheers,

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TBatt

Sorry you are having a problem.

Your serpentine belt is badly damaged! Do not run it like that.

All belts that I deliver are modified by cutting off one of the ribs converting an 8 rib belt to a 7 rib belt. This modification is done using custom tooling and every inch of the belt is inspected before I modify them.

It looks like you had a idler pulley bearing failure that in turn damaged the belt.

The SC belt is a K080220 from MAGNUSON SUPERCHARGERS GATES MIRCO-V AUX BELT REAR 8-RIB Gates K080220 [M-79-08-02-020] - $42.00

If you need another serpentine belt to replace the damaged one, PM me.

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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!

redondoaveb

Speaking of idler pulley bearing failure. The Stillen idler pulley, serpentine side on mine has a slight wobble and if you listen to it with a stethoscope, it's a lot louder than all the others.

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Fast Intentions "Stage Seb" twin turbo #098- Specialty Z/Tial-Xonarotor/CJM/Ecutek/HKS/KW/SPL/Hotchkis/Rohana/Toyo
700+whp

MoulaZ

Thanks mate!

PM incoming.