Nut_N_Much Journal

Pro4Jackster

[QUOTE=Nut_N_Much;2345612]
My final COG set up is 32/32 x 35mm and the 350Z 2.5 lipped aluminum idler pulley set (which is smaller than the plastic Stillen 3 inch). This set up will keep me out of the 12 lbs boost range. It is conservative, I would go all out but I like to drive my car every day. So i need it to be conservative.

For the serpentine belt on the front, I thought about running 10 rib but that is for another day. Hope this answers some of your questions. The reason my build is take F_ing for ever is the COG sizes, later I might drop to a 30 tooth on the SC side and slide my 34 Jack Shaft COG back on but not know.
[QUOTE]

You have really been a lot of help. I spend most of my time 1500 miles away from my car, so I cannot just walk outside and take measurments. I stock-pile parts, then throw them on when I get a little time at home.

I have decided to go forward with the Cogs sooner than later. I'm going to order your new setup and adjust the hp/tq with the front pulley. But, I would like to verify a couple of your new part numbers:

1) What is the part # of the 350Z 2.5" lipped alum idler pulley set?
2) Are both of your 32T pulleys the 2A033-032?
3) Is your 34T JS pulley still the 4GR032-034?
4) Is the belt for the 34/30 combo still the 2A042-070 (70T, 350Z rev-up)?
5) What did you use to adjust the alignment on the Cog/Idler pulleys? 928 Motorsports - Porsche® 928 Performance Parts - Powerdyne and Vortech® Pulley Spacers - Porsche® 928 World record Holder 216.63537 mph

Thank you in advance. I appologize for being a pain in the butt. I need to Paypal you some cash for a 6-pack of beer for doing all of this test-fitting and info-sharing!

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Jtranbuilt '08 Z [Jtran PT7075 Single - Fujitsubo - Transgo - Wilwood - TE37SL - BC Racing]

Nut_N_Much

Sorry for the delay, I was out of town and I wanted to verify the part numbers before posting them for you. Don't want you to have to go back and forth for stuff.

1) Idler Pulley Set: 4GR116-300 $38.95

2) Jack Shaft:
a. 32tooth/4GR032-032 $94.00
b. 34tooth/4GR032-034 $94.00
COG's: 32tooth/35mm wide/ 24033-032 $94.00 *** Recommended, 35mm wide is not made in any other tooth size. They have a 30 tooth COG in a 50mm width. Which works if you build a support strut to keep the SC Plat from flexing under load.

4) Yes thats the size for 30/50mm SC COG & 34/20mm Jack Shaft COG. Also will work with 32/35mm SC COG & 32/20mm Jack Shaft COG: Belt is a Gates 20mm 70 tooth/ 2A042-070 $34.95

5) a. Idler Pulley (Smooth Aluminum w/Flang) is 4GR116-300 $38.95
b. When you buy the impeller get a set of shims. I didn't need any with mine but every SC is different. You might need to shim it to get the right clearances in the compressor. 928 Motorsports - Porsche® 928 Performance Parts - Set of 4 Impeller Shims for*Powerdyne, Vortech®, Paxton Superchargers - Porsche® 928 World record Holder 216.63537 mph
c. Pulley Spacers for the COG's not needed. What is needed is longer grade 8 bolt for the SC side, take the rib SC pulley off and take that bolt to Home Depot and match the threads. You will see what I mean when you take off the rib pulley from the SC the COG is wider depending on which one you use the 50mm is much wider than the 35mm. Will need a longer bolt.
d. Order a set of KEYS when you get your COGs. The keys keep the COGs from spinning on the shaft.

Vortech Superchargers

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Did new cool science stuff to the car !!!
http://www.the370z.com/mazoc/99606-z...y-14-17-a.html
http://www.the370z.com/diy-section-d...-w-videos.html