Quote:
Originally Posted by classicauto
Funny you mention Dave gibson engines.
I've seen a couple of plates he layed his "rotary air flow engingeering" degree on. Face, meet palm.
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What exactely was wrong with them? The shape of the ports, more exactely the "tips" weren't radiused much more than stock. They were cleaned up slightly, but nothing drastic. The finish on the ports looked like was just stoned, something that I really don't do alot of, most of my porting starts with a cutting bit, then I feather it in as much as possible, sometimes not even a single pass with a stone before going to the sandpaper rolls. WHen cleaning up Gibsons work, I used some med grit rolls and then alot of work with "the flapper". In my experience the flapper does a very good job of finishing off the port, especially where it meets the plate surface. It's slow going without a doubt, but it's always easier to take more material off than add some in
Anyway, a few shots from the stacking adventures on Sunday
My newly acquired S5 n/a housings that I ported and swapped the sleeves on
The rear plate needed ALOT of work. Probably a good 45 minutes worth of clean up, here's the result though
