H35 boring this week

markus

Well-Known Member
#1
Mr K and Mr B’s blocks were on the fine faux wooden operating table this week. K’ just needed a shortblock rebuild B’s is in for full on build from boxes of parts engines he has sent down for me to pic through and create with

blasting work done and decks resurfaced I was ready to start measurung

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Mr b’s later aluminum block didn’t look as bad as it was. I actuall questioned my bore gage at first but it was not lying. This shows at .010” over you can see I still was not making contact in the center where the piston rocks and eats! Scratch lines still showed as well in spots…..keep cutting

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took it to .0

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For Mr K’s 1969 steel bore it had some out of round from wear as well as some stains and pits form rings rusting and seizing on the bore from sitting. Got it done with just a .010” over. IMG_5759.jpeg
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B’s will be worked on later along with an HS40 of his as well but I finished K’s and got it dropped at the shipper today.
 

Minimichael

Well-Known Member
#4
Nice work, Markus. It's no wonder why people send these to you. Details like those kiss fits at the valve and seat.

So will you upgrade the rings and pistons as well, given the new +10 bore?
 
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markus

Well-Known Member
#7
Nice work, Markus. It's no wonder why people send these to you. Details like those kiss fits at the valve and seat.

So will you upgrade the rings and pistons as well, given the new +10 bore?
Well, yes of course. the new oversize piston and ring sets are Cleary visible in the pics above. you need them onhand to determine your target piston skirt to cylinder measurements when taking them oversize.
 

Minimichael

Well-Known Member
#9
Well, yes of course. the new oversize piston and ring sets are Cleary visible in the pics above. you need them onhand to determine your target piston skirt to cylinder measurements when taking them oversize.
Something told me I would regret that question. I went back and looked closer and see them now. The reason I asked was that there was a recent discussion on this site about whether and when replacement of the piston is necessary.
 
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