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Old 08-29-2010, 02:20 AM   #19
indywagon
Scooby Newbie
 
Member#: 215814
Join Date: Jul 2009
Chapter/Region: MAIC
Vehicle:
2010 Tundra
Red

Default

Quote:
Originally Posted by Junior2JZ View Post
Pinned sleeves are to help keep them from shifting/moving/distorting when the boost goes high. Pinned mains are to keep the block halves together and happy under big HP use.
As he said, it helps keep the block from twistng and the mains become distorted in that regards. It does not help keep the halves from pulling apart but helps keep them from twisting.
It thus keep the main bearings happy and helps keep the rod bearing oiling consistent.

-Micah
'Homemade WRX'

P.S. lots of builders do this, not just turbotrix

P.P.S. you sleeving jobs looks a little loose or the block was warm when they cut it by the corners where the sleeves meet. Might just be the picture though.
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