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#1
16-11-2006, 20:47
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....If think he probably just matched the valve throat to the size of the gasket....usually chamfer the edge of the port wall slightly and remove any casting flash unless he decided to seriously open up the ports. I think you would see steam in the exhaust if he had gone to far with this to be honest.
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#2
16-11-2006, 20:56
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you would not believe how much material you can take out of the et head, i had AMT engines do me one on the flow bench, if anyone read the write up on the cover supra, in the engine spec, you can see andy @ amt developed the head for it on the flow bench, its around 1000bhp, and if anyone went to the jap show at the pod, there was a light blue skyline r32 on the whiff bitz stand, this has also had the head ported @ AMT, andy also made the huge plenum for it.
__________________
 fj20/et a replacement for displacement 
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#3
16-11-2006, 23:40
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it only smokes on idle and gets worse the hotter it gets! i know the car the turbo came off and it wasn't a smoker but it did loose oil pressure and throw an end so could've killed the turbo aswell!
i'm gonna take the turbo off this weekend and got a mate whose gonna re build it for me! might just go on a mad 1 and rebuild the old engine at the same time! the previous owner had only just rebuilt the old engine so its got all new rings, shells and oil pump but he didn't bother getting the crank measured so it wasn't long before a big end went! am i better off using the s12 or s13 bottom end because i have both in need of rebuilds or are they both pretty much the same?
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#4
18-11-2006, 18:24
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smoking on hot idle sounds like how mine was when the old turbo was on it's way out. I would still plug the turbo oil feed on the engine block @ idle to verify where the smokes coming from before condeming the engine as they are very tough - i couldnt find any wear on my rings after 125k and 7 previous owners and there was just a few thou wear on the bores.
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