02-04-2020, 01:56 PM
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#8 (permalink)
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Track Member
Join Date: Nov 2011
Location: Surprise, Az
Posts: 590
Drives: 2017 370Z Nismo
Rep Power: 6746
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Quote:
Originally Posted by Hotrodz
I am in agreement with Spooler. That manifold is only good if it is ported and polished. You would be better off doing a GTR manifold conversion. Just Spooler pointed out the issue is head gasket problems when you get above 18 psi which is long before the upper manifold becomes an issue. The oem manifold will start to fail at about 25 psi. My two cents, don't fix what's not broke!
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This is EXACTLY what I was looking for! Read on a previous thread when I was researching AAM, that OEM manifold started to fail at anything above 20lbs and that's what started my brain going haywire.
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Fast Intentions Kit Stage 2 #076 2017 Twin Turbo 370z Nismo. JMS Built Block, Closed Deck 874whp, 803lbs Tq e85 Ecutek Tune
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