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      09-27-2013, 12:25 PM   #53
buster84
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Drives: 2009 335I X-Drive E90
Join Date: Nov 2012
Location: Orlando

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Quote:
Originally Posted by stratos_335 View Post
There is a trick: upgraded forged pistons like CP and forged rods like Arrow will handle more boost safely. Machining my sleeves to 84.5 mm to put new pistons will make the sleeves very thin and the engine will not be reliable. If there is any coating on the sleeves, it will disappear after machining and honing.



@flinchy: the bottoms of the cylinders were measured 84.01 mm, the middle 84.00 and the top of them 84.02 and one cylinder 84.03. The stock is 84.00 for all the length of the cylinder.
This might be a good thread for reference to your car since you also tore your engine down. Btw, what year if your car?

http://www.e90post.com/forums/showthread.php?t=464348
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