Expansion Tank Cracking

[Chicagowil]

Originally Posted by RockBit

I have an aluminum block. With solid motor mounts, would the be a danger of stripping the motor mount threads in the block? My engine dynoed at 660 lb-ft…

And solid motor mounts on race (1/4 mi) cars are prone to causing cracks in the side of the block around the mount bolts.

I would suggest replacing the alum elbow and rubber couplers with a pre-formed rubber hose. It would allow for more twist and flex as the motor moves around.

[RockBit]

Originally Posted by Chicagowil

And solid motor mounts on race (1/4 mi) cars are prone to causing cracks in the side of the block around the mount bolts.

I would suggest replacing the alum elbow and rubber couplers with a pre-formed rubber hose. It would allow for more twist and flex as the motor moves around.

Great suggestion and something I am thinking about. First, though, I am going to rig something up to help me measure the movement of the engine to make sure of the cause. Stay tuned and I’ll post the results.