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Originally Posted by keepupp
Tuning is key with a blown application and this is where things can get crazy on a high compression motor as I found out TWICE on EACH 350Z...2 blown head gaskets. Just my thoughts...and btw, the cars were tuned by professionals and only running 6lbs of boost.
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Sorry dude, gotta call BS on you here. 6psi will not pop the HG on a VQ35 no way. The tuning is negligable on the motor espically with a superchager that makes less power on the top end than a turbo does by far. CFM of even a centrifugal charger will be way less than a full frame T04 by far.
http://www.turboneticsinc.com/ts_applications.htm
Turbonetics kit runs a full frame T40S which is a fairly large turbo and runs 8psi of boost. They lay 385hp all day without failure. The VQ35 has entured 15psi on pump gas on quite a few cars making almost 450whp and not suffered from HG failure.
I would love to know what kit you were running and see some pics of the install. Also what professionals tuned the setup and what were they using for tuning? Were you running full standalone or emanage or what?
I do what your talking about for a living and 6psi on a VQ35 espically from a supercharger wouldn't blow up the motor, they simply just don't make enough power.
http://www.turbomagazine.com/features/0307tur_350z/
This car was in turbo mag a while back. Runs twin 18G mitsu turbo's. At 5.6 psi it layed 334whp and thats a bolt on greddy kit with a pre-programmed emanage that is not tuned to once specific car, its a generic bolt on kit. Those kits run all day long with no problems.
6psi from a charger poped the HG? Unelss you were not adding fuel and had some serious detonation issues it's not gonna happen.