Folks,

Recently had the B20 rebuilt in my '68 145 and I working on getting it installed and setup. I went to adjust the clutch and found the clutch fork was hitting the bellhousing before the clutch was fully disengaged. This engine is running a resurfaced 8-bolt flywheel from a B20, a Sachs clutch kit with Sachs throw-out bearing, a new clutch fork, and a M41 transmission. I had a second flywheel lying around that was about ~0.100" thicker and this improved the situation but the clutch fork still hit the bellhousing before the clutch fully disengaged. I have replaced a clutch several times on 140s and early 240s without this issue, so I am a bit stumped as to what is causing this problem.

I also randomly had a different style throw-out bearing in my garage from an old engine, which IPD labels as a "Borg and Beck" throw-out bearing . This bearing is taller but still interacts with the same point on the clutch fingers as the Sachs throw-out bearing. With this bearing installed instead of the Sachs bearing, the clutch fork sits much father back in the "window" and easily disengages before hitting the bell housing.

Has anyone else had this issue before? Any other ideas what might be causing the problem with my clutch and flywheel installation requiring me to use this taller bearing? I am hesitant to run this new bearing as obviously it didn't come with the Sachs kit.

Sachs clutch kit w/ throw-out bearing: https://www.ipdusa.com/products/5649/Clutch-Kit-Sachs-KF24201-Volvo-271263?crumbs=0,969,1341
Borg and Beck throw-out bearing: https://www.ipdusa.com/products/16556/Release-Bearing-Borg-and-Beck-Genuine-Volvo-672122?crumbs=0,969,1341

Thanks in advance!
Brian