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Neo Head Help...


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To be honest I was a bit dodgy on the whole bottom end with the rear oil seal case fouling on r33 flywheel but you have put me strait was only really asking so I don't get wrong bearings and rings for rebuild and they are stronger than a r33 engine

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This is interesting. I have personally took r33 gtst heads well over 30 psi of boost and beat the living hell out of them. What I hated was the hydraulic lifters some would fail on me. I've always wanted to do a neo head on my r33 gtst and see what would happen. Keeping in mind the motor was built. Looking at the cylinder head combustion area how can you guys tell its a neo. It looks the same as a r33 gtst head to me. Is there somthing im missing. For me I only wanted a neo head for the solid lifters like a gtrs head. Hmmm. Interesting post mate.

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Neos have a 51.5 cc combustion chamber. Non-Neo is 63. They are pretty easy to tell apart when side by side. The Neo chamber is noticeably smaller.

Hmm intresting to small.to see with the eyes. Whats the gtrs??
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