danlandberg
Active Member
This is the third time the rear mount studs have sheared off at the block (case halves). The second engine I used 8.8 grade bolts, worked for 25-30 miles. Then failed again! I removed all studs from both engines, and replaced the studs on the engine I;m running with stock studs, broke again in 10 miles. I'm thinking of shuffle pins, or 8x1.25 studs. One other thought is to add a cold role aluminum plate under the mount spacer (between spacer & case) And adding two more mount bolts into block (case). Will have to file the mount spacer (flat end) to accept the plate so I can keep the distance between the engine and seat tube the same. Any one have a sure fire fix for this problem?? ('' NEED INPUT'').........Dan