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Do they make an overdrive crank pulley for the Z? Has anyone toyed with this yet? It could crank out more psi with less chance of slippage on the sc

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Old 07-08-2015, 11:11 PM   #1 (permalink)
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Do they make an overdrive crank pulley for the Z?

Has anyone toyed with this yet? It could crank out more psi with less chance of slippage on the sc belt.
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Old 07-11-2015, 10:37 AM   #2 (permalink)
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Originally Posted by TopgunZ View Post
Do they make an overdrive crank pulley for the Z?

Has anyone toyed with this yet? It could crank out more psi with less chance of slippage on the sc belt.
Hi Aaron ...
I was hoping that someone would jump in on this one!
I had researched this area when I was still building the Stillen.
Never was able to find a definitive answer though ... but I did speak with Bobby at CIN Motorsports and he was developing an overdrive pulley to spin up his Vortech V7 project.
He said he was going to need a 'slightly' larger crank pulley but didn't have the actual percentage figured out ... and was still in the trial and error phase of his engineering.
Something to consider is the max rating of the Stillen/Vortech V3 is 55000 RPM with the upgraded impeller.
Attached is a copy of the Dyno Run on my car with the Stillen showing little gain in HP and Tqe dropping off after 6900 RPM - Reducing your shift point actually might work to your advantage here.

Here is a link to check out - NST Pulleys.
10% overdrive on the crank might be too much for your SC'r application.
Maybe NST can come up with a custom solution for you combining a lesser overdrive % on the crank and the corresponding underdrive on the accessories.

NST Nissan 370Z Pulley Kit Dyno Testing | NonStopTuning
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