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niterydr · 12-29-2005

Most of the higher hp applications we "pin". This helps provide a positive center for the caps when assemblying the motor, and also helps prevent the cap from pivoting or "dancing" on main studs.
Most of the 7 bolt motors I have experience with have warped girdles. They are a pita to line hone, but I perfer the "interconnected" design.
Thats why we bush/pin the most 4g63/4g64 motors we do (or atleast recommend it).

12-29-2005	#8
niterydr back in the saddle again 24 Hours Rally Champion! 3D Pacman white house edition Champion! 3D Racing - Track 2 Champion! ATV Winter Challenge Champion! Bloody Pingu Champion! WRX Racing 2 Champion! Tournaments Won: 5 Join Date: Oct 2003 Location: Elkhart Texas Drives: 2015 Ram Quad Cab Hemi, 1999 FRC Corvette, 93 Stealth Turbo Posts: 6,411	Re: 7 bolt girdle Most of the higher hp applications we "pin". This helps provide a positive center for the caps when assemblying the motor, and also helps prevent the cap from pivoting or "dancing" on main studs. Most of the 7 bolt motors I have experience with have warped girdles. They are a pita to line hone, but I perfer the "interconnected" design. Thats why we bush/pin the most 4g63/4g64 motors we do (or atleast recommend it). __________________ My street car runs low 11's and my race car's personal best is a mid 11....