Top End Rebuild!!!!
12-08-2007, 08:58 PM
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Top End Rebuild!!!!
I have a few questions as to how and what to do for my NA top end rebuild. I was planning on port and polish, bigger cam, titanium valve springs, bore the throttle body, and deck the cylinder head for better compression. I have heard of many various types of set ups that people have in their NA 944's. Should i use my NA cylinder head, or a turbo head? What type of cam is best? Please feel free to share your set up and horsepower increase!! It will make me more motivated to get this done!!! 
12-08-2007, 09:07 PM
#2
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port and polish- ok
bigger cam?- www.jmengines.com
titanium valve springs? - overkill
bigger throttle body? - you going w/ bigger pistons?
deck cylinder head?- plan on less valve clearance and you'll need an adjustable cam gear if you go very far- better off w/ some euro pistons
n/a cylinder head is ok- turbo has bigger intake valves
SEARCH is your friend
most mods to improve power on n/a's include putting the car into the euro map - there is a link to this somewhere- euro pistons, intake, lightened flywheel, chips and exhaust.
bigger cam?- www.jmengines.com
titanium valve springs? - overkill
bigger throttle body? - you going w/ bigger pistons?
deck cylinder head?- plan on less valve clearance and you'll need an adjustable cam gear if you go very far- better off w/ some euro pistons
n/a cylinder head is ok- turbo has bigger intake valves
SEARCH is your friend
most mods to improve power on n/a's include putting the car into the euro map - there is a link to this somewhere- euro pistons, intake, lightened flywheel, chips and exhaust.
