Tin Can Sleeves

[Cartravel]

I read all the info in the recent V8 Times about the sleeves used in the early 24 stud engines. I've got one of these engines out of a '40 pickup and haven't used it due to the sleeves. If the sleeves are only 0.040 thick, could you just bore the cylinders out 0.080 or maybe 0.125 and run with no sleeves. Or, could you run with standard sleeves which are thicker?
Larry Young

[NealinCA]

Is this where the .083 over pistons came into play? Press out the sleeve and hone.

[JSeery]

Very common to remove the sleeves.

[bbrocksr]

Originally Posted by NealinCA

Is this where the .083 over pistons came into play? Press out the sleeve and hone.

Yes, but some of the bore's are too rough to hone and get a good surface.
In that case bore it.
Bill

[Ol' Ron]

We usually bore to 3 3/16 and use standard 239 pistons, never had a problem.

[40 Deluxe]

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Yep, that's where the .083" pistons came into play. Put several into 9N and 8N tractors.

[NealinCA]

I just got an 8BA with .083 pistons in it. They are .083 over 3-3/16". Best I can figure is that they are 8N/9N pistons. Must been what they had at the time.

Neal

[Tinker]

Curious is there issues going to .060? If not damaged. Just asking for me.

[JSeery]

Originally Posted by Tinker

Curious is there issues going to .060? If not damaged. Just asking for me.

.060 is not an option if you a referring to removing the sleeves. The sleeve wall is .040, so .040 x 2 = .080. The addition .003 was for the clean up hone. The idea was to just remove the sleeves and hone the cylinder walls and install the oversize pistons, so there really was no overbore. Some just go ahead and overbore after removing the sleeves and pick a size that pistons that is common.

Or are you referring to .080 + .060 for a total increase of .140?

[Tinker]

Ah ya. My bad on .040 sleaves. Just seems that going for max bore is norm. .08 being one more possible rebuild

[JSeery]

Originally Posted by Tinker

Ah ya. My bad on .040 sleaves. Just seems that going for max bore is norm. .08 being one more possible rebuild

Why not go for the max bore? If you want to do something later on, then sleeve it.

[Tinker]

Ya I guess. I get max bore. I guess I'm conservative and went from a .040 over to a .060. No sleeving needed for 2 more rebuilds. 37 block.

[JSeery]

You must be putting the miles on them! I'm a go for the max type of guy myself LOL.

[Tinker]

I understand. Hey I'm 40+ and hope to see at least one rebuild on the motor.

[Mart]

Don't get mixed up between the .040" wall thickness of the sleeve and going to +.060. The bore is over by twice the wall thickness of the sleeve, ie it is already +.080", so +.060 isn't the next size up, it's already bigger than that.

Mart.

[Walt Dupont--Me.]

You cain't get the .0825 pistons anymore. I tried to get a set for an 8N tractor engine I built last fall. located 2 pistons. Wound up installing .100 over 8BA pistons. But 40-42 Ford, like O Ron, I've built many many going out to 3-3/16 8BA std pistons. Use the 40 A heads and you can feel the new torque in the seat of the pants. Walt

[CA Victoria]

Good discussion.
Interesting.....the 8ba from Mater was bored to fit .083 Pistons. Presume this was done 25+ years ago in SoCal. Odd thing about the pistons they were .100 size turned to .083. Maybe a set done for the aforementioned engine and used on this project.