Sleeves

Axtell · Feb 18, 2015

I think I may have read too much and have got confused. I have a question regarding .040 and .090 sleeves. Do these sleeve fit the same block bore and use a different size piston or is the block itself bored to take the slicker sleeve?

Axtell · Feb 18, 2015

Thicker sleeve.

HCooke · Feb 18, 2015

If the block has .040 sleeves, it must be bored to accept the .090 sleeves.

Ken(Ark) · Feb 18, 2015

(quoted from post at 17:03:13 02/18/15) I think I may have read too much and have got confused. I have a question regarding .040 and .090 sleeves. Do these sleeve fit the same block bore and use a different size piston or is the block itself bored to take the slicker sleeve?

Before ordering sleeves , it would be advisable to remove the sleeves and inspect the block first . One of the sleeves may have been loose and an oversized sleeve may be necessary or a dozen other odd things in the last 60 - 70 years .

NOXJohn · Feb 19, 2015

Both sleeves have the same ID and use the same pistons. The block is bored to match the OD of the sleeve. As others have said remove the sleeves in any engine before purchasing new sleeves. You never know what someone may have done in the past.

Axtell · Feb 24, 2015

Thanks guys. Just need to get the sleeves out. That's another post......

greywolf224 · Feb 24, 2015

Ok..I'm gonna pull a "Teddy here"
I know I am missing something.

If its the inside of the sleeve that will wear due to piston movement, why would you bore the block to accept a larger sleeve?
Wouldn't you just replace the sleeve with the same size sleeve.

Or are you meaning that the entire sleeve wore through to the engine block.

Sorry I never worked on a sleeved block.

R Geiger · Feb 24, 2015

(quoted from post at 04:09:19 02/25/15) Ok..I'm gonna pull a "Teddy here"
I know I am missing something.

If its the inside of the sleeve that will wear due to piston movement, why would you bore the block to accept a larger sleeve?
Wouldn't you just replace the sleeve with the same size sleeve.

Or are you meaning that the entire sleeve wore through to the engine block.

Sorry I never worked on a sleeved block.

When I rebuilt my last one, it had 040 sleeves in it, it still has 040 sleeves in it. Works just fine. some like the cast sleeves better. I stayed with the 040 sleeves and saved $ by not having to rebore. You just have to check to make sure what your bore is. It may not be stock no matter what sleeves you have.

greywolf224 · Feb 24, 2015

(quoted from post at 15:42:56 02/24/15)

(quoted from post at 04:09:19 02/25/15) Ok..I'm gonna pull a "Teddy here"
I know I am missing something.

If its the inside of the sleeve that will wear due to piston movement, why would you bore the block to accept a larger sleeve?
Wouldn't you just replace the sleeve with the same size sleeve.

Or are you meaning that the entire sleeve wore through to the engine block.

Sorry I never worked on a sleeved block.

Click to expand...

When I rebuilt my last one, it had 040 sleeves in it, it still has 040 sleeves in it. Works just fine. some like the cast sleeves better. I stayed with the 040 sleeves and saved $ by not having to rebore. You just have to check to make sure what your bore is. It may not be stock no matter what sleeves you have.

Thanks and sorry for being a PITA

I guess my question is:Why would somebody need to re-bore the block?
Were the blocks bored to different specs? I would assume that the correct way would be doing exactly as you did.

TheOldHokie · Feb 24, 2015

(quoted from post at 16:00:08 02/24/15)

(quoted from post at 15:42:56 02/24/15)

(quoted from post at 04:09:19 02/25/15) Ok..I'm gonna pull a "Teddy here"
I know I am missing something.

If its the inside of the sleeve that will wear due to piston movement, why would you bore the block to accept a larger sleeve?
Wouldn't you just replace the sleeve with the same size sleeve.

Or are you meaning that the entire sleeve wore through to the engine block.

Sorry I never worked on a sleeved block.

Click to expand...

When I rebuilt my last one, it had 040 sleeves in it, it still has 040 sleeves in it. Works just fine. some like the cast sleeves better. I stayed with the 040 sleeves and saved $ by not having to rebore. You just have to check to make sure what your bore is. It may not be stock no matter what sleeves you have.

Click to expand...

Thanks and sorry for being a PITA

I guess my question is:Why would somebody need to re-bore the block?
Were the blocks bored to different specs? I would assume that the correct way would be doing exactly as you did.

I guess I did it wrong. I had my .040 block rebored for the .090 wall sleeves because everyone knows they are an improvement :roll:

TOH

greywolf224 · Feb 24, 2015

I guess I did it wrong. I had my .040 block rebored for the .090 wall sleeves because everyone knows they are an improvement Rolling Eyes

Dan, you know that's not what I meant.

I have worked on non sleeved engines so I know the reasons for over boring those blocks.

My correct assumption comment was meant for someone such as myself not knowing the reasons as to why you need to re-bore for a larger sleeve?

I'm asking why re-bore far a larger sleeve if the inside diameter is staying the same and using the same diameter piston?

Are there benefits? Is it needed? Is it required?
You state everyone knows that .090 sleeves are an improvement. Is it because they are thicker, able to withstand more heat? Wear better?

Just trying to learn some.
TX

TheOldHokie · Feb 24, 2015

(quoted from post at 16:52:48 02/24/15)

I guess I did it wrong. I had my .040 block rebored for the .090 wall sleeves because everyone knows they are an improvement Rolling Eyes

Click to expand...

Dan, you know that's not what I meant.

I have worked on non sleeved engines so I know the reasons for over boring those blocks.

My correct assumption comment was meant for someone such as myself not knowing the reasons as to why you need to re-bore for a larger sleeve?

I'm asking why re-bore far a larger sleeve if the inside diameter is staying the same and using the same diameter piston?

Are there benefits? Is it needed? Is it required?
You state everyone knows that .090 sleeves are an improvement. Is it because they are thicker, able to withstand more heat? Wear better?

Just trying to learn some.
TX

We need a better "sarcasm" emoji - the "rolling eyes" just doesn't get the job done ;-)

I don't think it makes a rats a$$ difference in engine performance. Despite what you will hear both are typically made from cast iron these days. We could start a long exhaustive thread on the thermodynamics of the heat exchange differences but I'd have to get some old school books out if we do ;-) Definitely easier for Backyard Bob to R&R the thick wall ones.

TOH

greywolf224 · Feb 24, 2015

We need a better "sarcasm" emoji - the "rolling eyes" just doesn't get the job done Wink

Very True.

The rolling eyes reminds me of when I am asking (not telling) my 16 year old son to do something. When his eye's roll I tend to lose it.

Definitely easier for Backyard Bob to R&R the thick wall ones.

Starting to see the light. Easier to install a .090 sleeve than rather a thinner one in respect to sleeve damage during install.
Would think its harder to and more $$$ to over-bore a block though for the average schmo like me.

Maybe using your sleeve puller soon.

Sleeves

Axtell

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HCooke

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Ken(Ark)

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NOXJohn

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Axtell

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greywolf224

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R Geiger

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TheOldHokie

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