The Ford Barn

old ugly · 02-10-2022, 06:27 PM

i have an engine that has all ready been sleeved, it was bored last time to 0.080 and now the sleeve needs to be bored to .100"
i am guessing the sleeve is from snyders but am unsure. and i don't have the current od on the sleeve.

any ideas on a max bore on a sleeve? or minimum wall thickness on the sleeve?

thank you

daveymc29 · 02-10-2022, 07:10 PM

I have the same type question with a $6K engine rebuild that developed a crack about an inch up from the bottom of #3. I'd like to sleeve it to the same bore, .060 over, as the other three, but want the crack repaired first. I have been told that there are people satisfactorily welding cast iron heads that should also be able to weld the crack. Is that fact, or is speculation? Like to find someone near the SF Bay area to tackle it.
Ace Mechanic with steamer. Lots of steam.

JayJay · 02-10-2022, 08:02 PM

Quote:

Originally Posted by daveymc29

I have the same type question with a $6K engine rebuild that developed a crack about an inch up from the bottom of #3. I'd like to sleeve it to the same bore, .060 over, as the other three, but want the crack repaired first. I have been told that there are people satisfactorily welding cast iron heads that should also be able to weld the crack. Is that fact, or is speculation? Like to find someone near the SF Bay area to tackle it.
Ace Mechanic with steamer. Lots of steam.

Davey - just sent you a PM.
JayJay

CT Jack · 02-10-2022, 10:42 PM

I am probably going to get many opposing views about welding cast iron but the fact is cast iron cannot be welded. Metallurgically cast iron is not the same as wrought of forged iron based alloys. Cast iron lacks the properties needed for complete fusion when exposed to various welding methods. Cracks in cast iron can be braised but if the repaired area is exposed to large mechanical loads or thermal cycling it will ultimately crack again. Mechanical stitching is the only method for repairing cracks in cast iron. Maybe it's time to look for another block.

steve hackel · 02-10-2022, 11:30 PM

Look up "Loc-N-Stitch" and they are right out in your area - California. I have seen
some of their repaired work at the Hot Rod & Restoration shows and it was amazing.
The best part of it is they can repair your block or you can do it yourself, but either
way it will be repaired correctly and then you can have it sleeved and then bored
out to your .060 size piston. Your rebuilder should have heard of them, but if not
then check them out yourself. Good luck.....

nkaminar · 02-11-2022, 06:18 AM

Sponsored Links (Register now to hide all advertisements)

A friend of mine just removed an engine from his Tudor that developed a crack. He says it is scrap and put in an engine that he had rebuilt using a good block. He is also building up a Burtz block for future use. If the engine has been sleeved and needs to be re bored out 0.100 it may be time to look around for another block.

J and M Machine · 02-11-2022, 08:25 AM

Quote:

Originally Posted by old ugly

i have an engine that has all ready been sleeved, it was bored last time to 0.080 and now the sleeve needs to be bored to .100"
i am guessing the sleeve is from snyders but am unsure. and i don't have the current od on the sleeve.

any ideas on a max bore on a sleeve? or minimum wall thickness on the sleeve?

thank you

If your block has been sleeved back to standard, depending on which sleeve they installed. First size sleeve has an outside diameter of 4.063" which is already .100 over. Boring it to .100" isn't going to happen. You'd have to remove the sleeves and start over. The maximum you can bore a sleeve to is within 1 / 16 "
left on each side of the sleeve. This is what the sleeve manufacturers recommend.

old ugly · 02-11-2022, 09:37 AM

Quote:

Originally Posted by J and M Machine

If your block has been sleeved back to standard, depending on which sleeve they installed. First size sleeve has an outside diameter of 4.063" which is already .100 over. Boring it to .100" isn't going to happen. You'd have to remove the sleeves and start over. The maximum you can bore a sleeve to is within 1 / 16 "
left on each side of the sleeve. This is what the sleeve manufacturers recommend.

ok , thats what i was looking for
thank you

old ugly · 02-11-2022, 09:55 AM

Quote:

Originally Posted by J and M Machine

If your block has been sleeved back to standard, depending on which sleeve they installed. First size sleeve has an outside diameter of 4.063" which is already .100 over. Boring it to .100" isn't going to happen. You'd have to remove the sleeves and start over. The maximum you can bore a sleeve to is within 1 / 16 "
left on each side of the sleeve. This is what the sleeve manufacturers recommend.

ok help me again with the math, im not good at it.

sleeve od ----------------4.063"
stock bore + 100 over - --3.976"
difference ------------------0.087"
divided x2------------------0.0435"

i think 1/16" is .0625

J and M Machine · 02-11-2022, 05:53 PM

Quote:

Originally Posted by old ugly

ok help me again with the math, im not good at it.

sleeve od ----------------4.063"
stock bore + 100 over - --3.976"
difference ------------------0.087"
divided x2------------------0.0435"

i think 1/16" is .0625

Yes 1/16" is .0625" and that's the minimum that the sleeve manufacturers recommend; at .043" the sleeve will fail.

old ugly · 02-11-2022, 10:16 PM

Quote:

Originally Posted by J and M Machine

Yes 1/16" is .0625" and that's the minimum that the sleeve manufacturers recommend; at .043" the sleeve will fail.

perfect thanks for the help.
ou

Dodge · 02-12-2022, 04:28 PM

Amen on the "Loc-N-Stich" people. We have had a 100% success rate with them.
If its not a very big crack you can call ahead and make an appointment and they'll do it
while you wait.

On the sleeve, if it does get too thin L.A. Sleeve in Los Angeles can make you anything
you want. You can make it larger so it won't be so thin and even have the I.D. closer
to you finish bore so as not to have to bore .100 out of it when you get it.

02-10-2022, 06:27 PM	#1
old ugly Senior Member Join Date: Aug 2021 Location: alberta canada Posts: 585	reboring a sleeved cylinder question i have an engine that has all ready been sleeved, it was bored last time to 0.080 and now the sleeve needs to be bored to .100" i am guessing the sleeve is from snyders but am unsure. and i don't have the current od on the sleeve. any ideas on a max bore on a sleeve? or minimum wall thickness on the sleeve? thank you __________________ old ugly my old father-in-law told me. "listen close when people tell you how to do stuff they may know something. then do it the way you want." Last edited by old ugly; 02-10-2022 at 07:32 PM.

02-10-2022, 07:10 PM	#2
daveymc29 Senior Member Join Date: Sep 2010 Location: Danville, CA Posts: 1,554	Re: reboring a sleeved cylinder question I have the same type question with a $6K engine rebuild that developed a crack about an inch up from the bottom of #3. I'd like to sleeve it to the same bore, .060 over, as the other three, but want the crack repaired first. I have been told that there are people satisfactorily welding cast iron heads that should also be able to weld the crack. Is that fact, or is speculation? Like to find someone near the SF Bay area to tackle it. Ace Mechanic with steamer. Lots of steam.

02-10-2022, 10:42 PM	#4
CT Jack Senior Member Join Date: May 2010 Location: Hebron, CT Posts: 432	Re: reboring a sleeved cylinder question I am probably going to get many opposing views about welding cast iron but the fact is cast iron cannot be welded. Metallurgically cast iron is not the same as wrought of forged iron based alloys. Cast iron lacks the properties needed for complete fusion when exposed to various welding methods. Cracks in cast iron can be braised but if the repaired area is exposed to large mechanical loads or thermal cycling it will ultimately crack again. Mechanical stitching is the only method for repairing cracks in cast iron. Maybe it's time to look for another block.

02-10-2022, 11:30 PM	#5
steve hackel Senior Member Join Date: May 2010 Location: midlothian illinois Posts: 447	Re: reboring a sleeved cylinder question Look up "Loc-N-Stitch" and they are right out in your area - California. I have seen some of their repaired work at the Hot Rod & Restoration shows and it was amazing. The best part of it is they can repair your block or you can do it yourself, but either way it will be repaired correctly and then you can have it sleeved and then bored out to your .060 size piston. Your rebuilder should have heard of them, but if not then check them out yourself. Good luck.....

02-11-2022, 06:18 AM	#6
nkaminar Senior Member Join Date: Jan 2012 Location: Western North Carolina Posts: 3,904	Re: reboring a sleeved cylinder question Sponsored Links (Register now to hide all advertisements) A friend of mine just removed an engine from his Tudor that developed a crack. He says it is scrap and put in an engine that he had rebuilt using a good block. He is also building up a Burtz block for future use. If the engine has been sleeved and needs to be re bored out 0.100 it may be time to look around for another block. __________________ A is for apple, green as the sky. Step on the gas, for tomorrow I die. Forget the brakes, they really don't work. The clutch always sticks, and starts with a jerk. My car grows red hair, and flies through the air. Driving's a blast, a blast from the past.

02-12-2022, 04:28 PM	#12
Dodge Senior Member Join Date: Nov 2011 Location: Sonoma, CA. Posts: 1,498	Re: reboring a sleeved cylinder question Amen on the "Loc-N-Stich" people. We have had a 100% success rate with them. If its not a very big crack you can call ahead and make an appointment and they'll do it while you wait. On the sleeve, if it does get too thin L.A. Sleeve in Los Angeles can make you anything you want. You can make it larger so it won't be so thin and even have the I.D. closer to you finish bore so as not to have to bore .100 out of it when you get it.