[Healeys] 100 engine bore for sleeves

[Greg Lemon]

Larry,

I had to make some similar decision when I rebuilt my 100 motor, I am quite 
sure it had a lot more than 8,000 miles, there were deep pits in the bores, 
as if they had corroded or something, I know the car sat for some years and 
perhaps it they did have spots of corrosion.  Anyway I decided on my own 
that the engine needed to be resleeved and purchased a set from one of our 
big suppliers here, Moss Motors.  My machinist, who was by no means an AH 
expert, but who I had a certain degree of faith in (if you don't find 
another machinist) suggested that while he could put the sleeves in he would 
rather we try to find some big bore pistons, and I sourced some .060" over 
from England, not being able to find anything bigger than .040" from U.S. 
suppliers at the time.  He also felt the quality of the steel used on the 
motor block and fittings was quite good.  He said he could do the sleeves if 
I insisted, but did not recommend, it, as it would cost more, and there also 
might be some risk of damage (cracking?) to the block, which may relate to 
your question of how big you would want to go with the sleeves, but 
certainly doesn't give you a specific answer.

I know you probably know this, but do have the head checked for cracks.

Regards,

Greg Lemon