cylinder sleeves

[Hubbard]

Has anybody on here ever had any luck putting sleeves in Pan cylinders?

[jdpan]

Place called LA sleeve has a good reputaion for doing a reliable sleeve job but theyre awefully proud of their work... Google them and give em a hollar.. They've been re-sleeving Harley jugs for years... Never mind Google, here ya go...
http://www.lasleeve.com/master.html" onclick="window.open(this.href);return false;

[Cotten]

Hubbard!

Sleeving should be considered to be a last-ditch effort to save castings of significance, such as for their casting codes, etc.

There are two inherent pitfalls in sleeveing, which a machinist can alleviate, but not eliminate: insulation, and fastener stress.

The heat transfer issue needs extra steps in the boring procedure.
The bore for the sleeve should be cut undersize, and then honed to spec to the finest finish possible, as any tool mark at all is an insulating void. Some even choose to polish the outside of the sleeve as well.

Fastener stress is is remedied by the use of stress or "torqueplates" while fitting for the piston clearance.
A fresh sleeve distorts to a similar degree as a moderately over-bored solid cylinder. The cylinder within a cylinder goes squirrely from the tightening of the base nuts and headbolts, but fitting it while stressed allows it to go back to round when installed.

Any good automotive machineshop should be able to follow these extra steps.

But frankly,
just using the torque-plate step allows cylinders to be blown all the way out to .100" over,
and that is still less than will be cut away for a sleeve!


Good luck!

....Cotten

[Hubbard]

Doesn't the cylinder get paper thin by the time there is enough room for a sleeve? I would be concerned about the cylinder seperating?

[Cotten]

Hubbard!

Once upon a time,
I was ordered by my speed shop employer to sleeve a set of 80" shovel jugs.

Boring them for sleeves produced windows of daylight between fins.

I told the boss they wouldn't fly.
He let them out the door, and the customer then sold the whole basket.
After it blew the front head into the frame, the new owner came in furious.
The proprietor dismissed him because he was not the customer who paid him.

Sleeving is the last resort, and must be performed carefully.

....Cotten

[Hubbard]

So it's safe to say the answer to the original question is simply, no

[Cotten]

Just to be clear:
Sleeving can be performed successfully of course, but with great effort and expense.
(Custom-sized L.A. Sleeves were over $90 a decade ago.)

Ordinary poke-and-hope installations are a roll of the dice.

....Cotten

[kitabel]

The exact amount of press fit is critical.
If it's too loose, the cylinder stress is lower (but still there), but the heat transfer from the sleeve to the barrel slows down.
If it's too tight, the cylinder may crack and the bore is distorted.