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2 minute(s) of a 34 minute read
5-16-2012
Block and head with machinist. Don't know what I want to do next.
Rebuild starter
clean engine bay
pull tranny apart to inspect
start cleaning stuff
5-17-2012
Machinist surprised me and pushed me up the list, had had to take 0.30mm of the block and 0.23mm off the head. Which brings me to my next question, Where is the 7M happy as far as compression ratio? To stay stock I'd be at a 1.8mm gasket, what would a 1.4mm do for me as far as compression?
5-19-2012
Got the cams all polished up today. I chucked them up in the lathe and just took some scotch-brite strips to them. I think they cleaned up real nice. I had some dragging spots when placed in the head and spun by hand, now its all smooth.
Before
After
Started cleaning all the slag off the head intake ports, its taking time but clean up real nice. There's a huge ridge behind every valve seat on the port side, just cleaning these up must make a difference.
I still need to polish this some more but you get the idea.
I'm reading not to touch the exhaust side, as far as porting, because of the negative result of exhaust velocity between the valve and the turbo. What do you guys think about that? I was thinking of going in and at least clean up the slag so its smoother, think its a good idea or what?
PS. I still need a little insight on happy compression ratio and the 7mgte, if anyone wants to school me?