TwinTurbo.NET: Nissan 300ZX forum - Power Level Questions
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Subject Power Level Questions
     
Posted by fst300zx on May 25, 2011 at 9:03 PM
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Message Out of curiousity i am going to be starting on this new motor and came up with an interesting Question. I recall a while back Greg posted a few dyno sheets talking about info on turbos and piping. There was a dyno chart for a car that put out 668hp at about 6k RPM. Below was his Build

A little info about turbos and pipes (DYNO CHARTS)
(The pink line added to the chart is a 700 turbo car with MS manifolds, 500 cams with larger ports and oversize valves, full 3 inch exhaust, Ash Massive Intercoolers and 2.5" intercooler pipes, Z1 Throttle bodies, JWT dual pop, 740cc injectors.)

Im Doing mine slightly different by adding in the V2 Intake with planer from Ash but my main Question was the Valve Size increase. Does anyone have any information on a build similar to above except without 1mm over valves? Would this be like shooting yourself in the foot if i decided against going with bigger valve and just sticking with a really good portjob, or are the gains really that much more? Any insight on this would help way my decisions.

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