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Originally Posted by chii370
well, skeeterbop has kinda hit the nail on the head with the first reply, the whole point here is no ones done it. yes it will be expensive, and it might not be for everyone. but all results are just based on speculation right now. and as for the TT SC claims i made, i have a friend that was in guam with me, had a white 370 base with a stage 2 GTM TT, and it DID NOT make claimed power.... not even close, not to mention other issues like overheating and a host of other annoying things. and i dont know how many "i bought a SC and im dissapointed" threads ive seen in the past 3 years all over the internet. TT.... not so much, but ive heard a TON of people bitching about there SC build. Your right, just as many are satisfied. Yes theres a lot of perfect builds out there that do exactly as intended. but you still keep missing the point to all this.
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personally i drive my car EVERY DAY "except winter" and i plan to do so until the wheels fall off. dont even start a bitch fest about gas and all that... i dont care. point is, if your one of the people who blindly slapped on a TT or SC on a STOCK car your running a huge risk of shaving off years of its life and reliability. thats the difference between building a engine thats MADE to take the abuse opposed to forcing a stock engine to perform outside its normal specifications.
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a built NA engine is generally going to be less reliable than a bolt-on FI engine. High performance NA builds mean constant high compression and an aggressive valvetrain. Bolt on boost is generally very reliable, provided the tune is decent.
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i can bet, ten years from now all these 500-600 hp TT 370s will all have to have rebuilt engines, transmissions and all kinds of other problems. lucky if it even hits 150k miles without blowing up. especially if you beat on it, and thats what happens 99% of the time dont lie. short term reliability has been rock solid so far i will give you that, but this engine is NOT designed for that and it will fail.... mark my words. building an engine up is by far not a cure all to that but it most definitely makes it far less likely to be a problem since its BUILT TO DO IT.
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A proper, reliable build would require an incredible amount of R&D. The parts just aren't available for the VQ, and neither is the info.
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I dont feel like dealing with a blown engine 8 years from now when the car has half of its miles it could have. this is my daily driver, and some day i plan on passing it on to my son or daughter as our generations "muscle car" just like my dad did with me with a matador red with white stripe 1971 AMC javelin SST 401 fully restored. so i would rather not give it to them in useless pieces lol.
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Your better option in that case is certainly not an NA build then.
In seriousness, there are forums dedicated to cars that came with the VQ35. It is worth taking a look to see what people have done with NA builds. The VQ series has a pretty tough time being taken to high levels of NA power, no matter what you do with the engine. There are a couple of reasons for it, mostly related to parts availability and flow issues. There are quite a few good resources out there, and Nissan has a couple of whitepapers available as well that discuss engineering tradeoffs that were made for the DE (and were kept in play for the VHR)