Starting Over - Cracked Block

R

Ross6860

Senior Member
Well, there goes a lot of sweat and a few bucks.

Dis-assembled the 59A that came with the '36 I have and it's worth what I was afraid it was worth. Scrap.

Cracked cylinder. So it's off to look for another. The crank is .040"/.040" under, too.

At least I got a good cam core and a set of adjustable lifters, oil pan, front cover, a carb, etc.
 
That's a shame. A good deal can be done today with plug/stitching and sleeves.
Mine has 18 plugs in her now but holds lots of pressure.
 
A crack in the cylinder is the easiest to repair. Sleeve it.
more and more good blocks are hard to come by.
Considering what it took to disassemble the block,I wouldn't throw it out.
 
there are a lot of blocks that have been repaired. Even if you find another, try to keep, sell, or repair that one. my 2¢
 
That's the primary reason for dry sleeves. There are 1000's of sleeved blocks out there.That is why it is done. It is a tried and true normal engine repair.

R
 
I disassembled a 36 LB block that I had to drive the pistons out of. It had thin sleeves in all cylinders I took it to the machine shop and they said they could repair most any cracks and valve seats in the flatheads. I bought a restored running chasse from ebay and saved myself much time and money. I kept the LB for a future project.
 
J and M Machine said:
A crack in the cylinder is the easiest to repair. Sleeve it.
more and more good blocks are hard to come by.
Considering what it took to disassemble the block,I wouldn't throw it out.
Click to expand...

I believe the crack has traveled beyond just the cylinder bore. If I can get a photo to show it I'll post it.

I have storage space, so I'll save it for the time being.

Kahuna said:
I wouldn't invest another dollar in it. Find another, be happy, smile.
Click to expand...

I have a line on another 59A, carb to pan. Complete engine minus the distributor. We'll see how this one looks. Price is right.
 
Nothing wrong with sleeves. BUT, if there are cracks that go thru/under the valve seat inserts, I'd be very wary. Yes, they can be repaired. But, if you are building anything more than a stock engine, those repairs may not last. To me, the work is the thing, not the expense. I would always be thinking and worrying about them/it.
To each his own, Just my opinion
 
Kahuna said:
Nothing wrong with sleeves. BUT, if there are cracks that go thru/under the valve seat inserts, I'd be very wary. Yes, they can be repaired. But, if you are building anything more than a stock engine, those repairs may not last. To me, the work is the thing, not the expense. I would always be thinking and worrying about them/it.
To each his own, Just my opinion
Click to expand...


We've never had a failure with crack repairs with the valve seat cracks or any other areas we've repaired in over 20 years as most all Model A's Model T's and hard used V8's have cracks in them.
The day is going to come and it's rapidly approaching that there'll be no more good old cores available;cost of scrap has cleared out many junkyards locally.

We're located in the NorthEast and it's normal to see cracked blocks especially after 80 plus years of use so we don't have extra crack free blocks to source from so only logical alternative it to repair them.
http://www.jandm-machine.com/metalStitching.html
 
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