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Originally Posted by JWillis72 I am changing mine to air to air with 1000cc injectors( they stopped making 850cc), long tube headers, GTR plugs, 928 impeller and Stillen 9 lb
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08-05-2015, 07:49 PM
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#11 (permalink) | |
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Base Member
Join Date: Oct 2011
Location: NW Houston
Posts: 130
Drives: '08 350Z
Rep Power: 15  |
Quote:
In my opinion, the front serpentine pulley should be the last one to downsize. It has the least amount of belt wrap (around 30%). The rear pulleys have over 50% wrap, a belt that is less likely to stretch under load, and are affected less by bracket-flex. For the sake of minimizing belt-slip, it makes more sense to increase S/C rpms by changing the ratio of the rear pulleys or going with cogs. Or even take it a step further and upsize the front pulley to a high-traction 3.3". When people start pushing this upgraded kit, the next road block is probably going to be belt-slip.
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Jtranbuilt '08 Z [Jtran PT7075 Single - Fujitsubo - Transgo - Wilwood - TE37SL - BC Racing] |
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