Bridgestone Motorcycle Parts Discussion Board

Bridgestone Tech Talk => 50, 60, 90 & 100 Talk => Topic started by: montanabike on September 14, 2016, 09:52:17 PM

Title: 67 BS 90 M
Post by: montanabike on September 14, 2016, 09:52:17 PM

HI    JUST GOT AN OLD 90 MOUNTAIN RUNNING.AM WANDERING WHAT THE COMPRESSION SHOULD BE TO BE TOP SHAPE ?

Title: Re: 67 BS 90 M
Post by: mqtsteve on September 15, 2016, 06:35:31 AM

From the Bridgestone 90 Service Standards Manual.  Cylinder compression standard is 97 lb/in sq. (pounds/inch squared) with a permissible limit of 74 lb/in sq.  Hope this helps.  Good luck, Steve