I have seen some talk about porting polishing and exude honing e36 heads and intake manifolds. It seems odd to me though, I would love to know why you would exude hone (or if you even could) a molded, perfectly smooth PLASTIC intake manifold.
Port matching? I dont see how you could given that the intake manifold has 6 individual gaskets and is once again a precision hi temperater thermoplastic or composite of some sort. I know how to do it on a a big old american V-8 as those manifolds are big metal castings of questionable finish quality and precision. But a very smooth (yes had my fingers in one this weekend ) extremly well finished intake manifold? I can see doing a three angle valve job, i can even see head work on the exhaust side, and perhasps even a camshaft swap, (assuming you happen to have that nifty little three thousand dollar tool for removing the camshafts lest you break them..). but i cant see porting, polisahing and gasket matching on this motor. (maybe some of the folks are familiar with american iron and thought these techniques would be applicable?
thanks for any thoughts