Z134 overhaul kits - why overbore?

Hi,

will embark on reassembly shortly (I hope!).

It seems the kits on this site are 'overbore to 3 3/8'

Why is this and do I care?

thank you

Bill
 
Not sure why they do that, never noticed until now.

Maybe they think most people would want the overbore, don't know...

I did see they are offering a complete kit with a NEW crankshaft.

Just be careful, everything is aftermarket. Measure and compare, take nothing for granted!
 
I just did a MF35 engine rebuild last spring. Went with the Tisco kit with no problem. I would recommend sending the head out to be rebuilt, that is where your compression is assured.

Not sure either why the over bores. My rebuilt TO30?s are all overboard with the same 3-3/8 pistons. No problems just a bit more power.

Keep us informed on your progress
 
Will do.

block cracked in usual places all three webs between cylinders top to bottom

machine shop said yeah that thing is gonna dump coolant in the oil. Have a salvage block on its way.

yes will rebuild the head but probably do myself as I have valve and seat grinder - usually do my own after its been tanked and magnafluxed..
 

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