pheonix165 Posted February 22, 2007 Share Posted February 22, 2007 how much can i shave the heads before it causes too much interference. turbos round hear are rare and i'm looking for something to add some pep to my ea82. my sedan is going to become a secondary vehicle so i don't mind reliability issues. this is going to be something for my dad and i to pull wrenches on so....its mostly for kicks and giggles. any thoughts would be great tnks Quote Link to comment Share on other sites More sharing options...
daeron Posted February 22, 2007 Share Posted February 22, 2007 how much can i shave the heads before it causes too much interference. turbos round hear are rare and i'm looking for something to add some pep to my ea82. my sedan is going to become a secondary vehicle so i don't mind reliability issues. this is going to be something for my dad and i to pull wrenches on so....its mostly for kicks and giggles. any thoughts would be great tnks I am not a sage, but my understanding is that you cannot shave the heads enough to really make an appreciable difference before your intake manifold no longer fits. :-\ I *may* be wrong, but I don't think so. Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted February 22, 2007 Share Posted February 22, 2007 .020" for the manifold to still fit stock. .025" or even .030" if you drill out the manifold bolt holes a size over (no big deal). GD Quote Link to comment Share on other sites More sharing options...
baccaruda Posted February 23, 2007 Share Posted February 23, 2007 a valve job would be good as well (while the heads are off) or perhaps instead of the shaving... Quote Link to comment Share on other sites More sharing options...
Phizinza Posted February 23, 2007 Share Posted February 23, 2007 025" or even .030" if you drill out the manifold bolt holes a size over (no big deal).Wouldn't that offset the intake port on the head to manifold and cause a disruption in air flow and pretty much screw up all the improvements you have tried so hard to do?Or am I off with the fairies again? Quote Link to comment Share on other sites More sharing options...
Prospeeder Posted February 23, 2007 Share Posted February 23, 2007 not to mention the ports then wouldnt line up and coolant would pour out into the intake. Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted February 23, 2007 Share Posted February 23, 2007 Go take a look at a feeler guage and then visualize taking that thickness out. For reference, even .030" is less than a spark plug gap. So no, it doesn't matter. .020" is *technically* the max if you go by the FSM. But many have done .025, and .030 with just a slight oversize of the manifold bolts. GD Quote Link to comment Share on other sites More sharing options...
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