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Re: Block sleeves
[Re: cudaman1969]
#3100769
12/08/22 11:19 PM
12/08/22 11:19 PM
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Joined: Mar 2011
Posts: 3,102
Michigan
A727Tflite
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master
Joined: Mar 2011
Posts: 3,102
Michigan
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Also after getting more of the picture, With sound bores and flanged sleeves you could be at .0005 to .001 for this.
What is the condition of the bores? Finished honed and straight? Yes good finish and straight, my concern when looking for pistons from the big engine builders, they said they never go over standard (4.5) because when bored there’s not enough material left between the cylinders = blown head gasket. I guess they made throw away blocks. Then the other can of worms is if all 8 holes are sleeved how weak-thin will cylinders be then (Siamese block) I feel like I’m in no mans land. I have everything there for this engine waiting now in limbo. One other thought, can standard pistons be coated .030? Call Line2Line on coatings - max thickness, etc. Their website says thicknesses up to .020”.
Last edited by Transman; 12/08/22 11:22 PM.
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Re: Block sleeves
[Re: cudaman1969]
#3102388
12/14/22 08:45 PM
12/14/22 08:45 PM
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Joined: May 2005
Posts: 2,009
Apollo, PA.
B1MAXX
top fuel
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top fuel
Joined: May 2005
Posts: 2,009
Apollo, PA.
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In my opinion yes, you need some interference to transfer the heat. but your on the right track. You need the step to secure it.
I should have said if it slides in its not enough.
Last edited by B1MAXX; 12/14/22 08:49 PM.
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Re: Block sleeves
[Re: B1MAXX]
#3102389
12/14/22 08:54 PM
12/14/22 08:54 PM
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Joined: May 2005
Posts: 2,009
Apollo, PA.
B1MAXX
top fuel
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top fuel
Joined: May 2005
Posts: 2,009
Apollo, PA.
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If the bore is 4.530...dead nuts. you need at least 4.5305. Nothing is perfectly round to the tenths.
Fixed bore number......
Last edited by B1MAXX; 12/15/22 08:31 AM.
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Re: Block sleeves
[Re: B1MAXX]
#3102419
12/14/22 10:19 PM
12/14/22 10:19 PM
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Joined: Jan 2004
Posts: 8,350
fredericksburg,va
cudaman1969
OP
master
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OP
master
Joined: Jan 2004
Posts: 8,350
fredericksburg,va
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If the bore is 4.530...dead nuts. you need at least 4.535. Nothing is perfectly round to the tenths A friend has a boring bar and the good sunen hone. I could then bore it with the step 1” from bottom. Then turn sleeves to .005 over that. Got a plan
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Re: Block sleeves
[Re: B1MAXX]
#3102506
12/15/22 11:13 AM
12/15/22 11:13 AM
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Joined: Jan 2004
Posts: 8,350
fredericksburg,va
cudaman1969
OP
master
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OP
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Joined: Jan 2004
Posts: 8,350
fredericksburg,va
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I would be putting the step at the top not at the bottom if you are staying close or at your 4.53 step at the bottom, bore needs to be 4.63 our more to leave a substantial enough step. There’s a set of 4.60 (another .035 off each wall) (time to sonic those walls I guess) pistons on flea bay cheap but I’m afraid to bore that big, sealing on deck between cylinders and wall thickness. Maybe o-ring with copper gasket would hold.
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