Shorten rear mount ??

[oylavabeer]

If I grind down the alluminium mount spacer evenly about 1cm will this cause any issues (this will help with clearance issues on my large frame mtb ) 66cc 2 stroke

[RedB66]

You should be okay. The air filter may be a little close to the seat tube. (depending on what style filter you have). You may have to install the filter after installing the carb...as opposed to installing as one unit.

[Earthman]

I shortened the rear mount for my engine by cutting about ½ inch off with a hacksaw then cleaning up the cut with a file and sandpaper. Cuts easily and works fine in my application (see pic). The mount may be a little weaker with respect to bending, but it isn’t subjected to that kind of force if the seat tube fits properly like my case.

[commander]

cool Earthman, looks like a pro did that .

[azbill]

good idea for clearance

[oylavabeer]

I thought it sould be ok just learning from your experiances