Air Cleaner Bolt Shearing

[TRIA73@aol.com]

I reference to air cleaner bolts shearing, I had the same problem several 
years back when I was running with a Stromberg CD 150.  I tried grade 8 bolts 
and still had bolts shear.  My theory is that the bolts were too long and 
bottomed out when threaded into the carb body.  The additional torque applied 
when tightening the bolts weaked them in conjunction with engine vibration 
that led to the shear.

Randy Dunn
'73 Spitfire