ESE's works engine tuner

[cotswold]

How so? It looks like a sleeve and piston to me. What am I missing?

I've lead a sheltered life and have not seen one bolted on before

[husaberg]

How so? It looks like a sleeve and piston to me. What am I missing?

It grew up to be the Aprillia RSA125 ?

So you googled Jamanthi too? Its as old as I am.

I've lead a sheltered life and have not seen one bolted on before

Berts TZR100 Sleeve was a slipping from memory.....

Some would say I've seen the light; I say I'm temporarily blinded by actually finishing a days racing without a headache...
The TZR100 has gone under the bench until I can figure out what to do with the slipped sleeve.

.

Some of Jans collaborations
Jamathi, Piovaticci, Bultaco, Minarelli, Garelli, Rumi, Schuurman, Aprilia, Derbi..

[cotswold]

So you googled Jamanthi too? Its as old as I am.

no it came up on a different forum and it solves the slipping liner issue

[F5 Dave]

Better to cast them in. Or ideally plate if designing an engine this century, Liners are bad M'kay.

[Bert]

Berts TZR100 Sleeve was a slipping from memory.....


Some of Jans collaborations
Jamathi, Piovaticci, Bultaco, Minarelli, Garelli, Rumi, Schuurman, Aprilia, Derbi..

yip Husa your on the money.
Some will recall Last years north island round in welly I had a few issues with the power valve (locking up and finally snapping the cables on the Saturday afternoon).
What seemed/turned out is it all got a bit hot (pump seal shagged) and gearbox full of water/oil, thus leading to the cylinder got very hot & the sleeve slipped down 1.5mm... Amazing it carried on going for the rest of the weekend (all be it shit) should have blown the head gasket/oring and filled everything with water. But given it was full of chunks, it didnt)...

Turned out no top lip on sleeve. So one needs to figure out what too do now. New sleeve or find a way to lock it in place..

It will be fixed and it will make a comeback...

[speedpro]

Turned out no top lip on sleeve.

That's friggin hard to believe. I'd be demanding my money back.

[jasonu]

I've lead a sheltered life and have not seen one bolted on before

Ahh now I see. Clever, maybe. Was it successful? Did that approach catch on?

[wobbly]

I must have been sheltered as well, I have never seen a sleeve that didnt have a step on the top for vertical location.
Maybe what is clever is the larger flange out from the combustion space to help heat flow to the finning.

[Grumph]

That's friggin hard to believe. I'd be demanding my money back.

Not uncommon to have no top lip. I assume this was sleeved back to 100 from 125. Much cheaper to use a parallel sleeve and less machining involved. Millions of diesels around the world reconned like this
they don't give troubles unless they're radically overheated.....as i see this one was.

It may be possible to use liquid Nitrogen to shrink the sleeve in place and restore it to correct alignment.

[Grumph]

I must have been sheltered as well, I have never seen a sleeve that didnt have a step on the top for vertical location.
Maybe what is clever is the larger flange out from the combustion space to help heat flow to the finning.

i looked at that and wondered if the cylinder was cast with the top of the water jacket open at the top and the liner extension closed it off...Casting would be much easier.
The danger with that layout of liner is possible cold seizure at the top due to different expansion rates top/bottom.

[Drew]

i looked at that and wondered if the cylinder was cast with the top of the water jacket open at the top and the liner extension closed it off...Casting would be much easier.
The danger with that layout of liner is possible cold seizure at the top due to different expansion rates top/bottom.

That could take a while to diagnose. I imagine it would just pinch the ring and run like shit, as soon as you started to put the motor under load without warming it up proper.

I'd go through twenty slugs before I figured that out!

[F5 Dave]

. .

Turned out no top lip on sleeve. So one needs to figure out what too do now. New sleeve or find a way to lock it in place..

It will be fixed and it will make a comeback...

Yeah that just seems lazy way to do it. Perhaps reseat the sleeve & run a countersunk bolt into the front skirt at the bottom. Once in the cases it can't back out & CS stops it winding forward & dropping out. That there's now a small hole in the bore at the bottom of the stroke is no biggie.

[jasonu]

Millions of diesels around the world reconned like this
they don't give troubles unless they're radically overheated.....as i see this one was.
.

Diesels don't (usually) rev to 13000+ rpm.

[speedpro]

The other issue for a sleeve without a method to locate it vertically is what does the head gasket seal on? With my turbo even with a lip to stop the sleeves dropping I still had problems with the thin sleeves cracking the lip off and then the bottom part of the sleeve dropping down a mm or so. Luckily never enough to snag a ring. The other thing was that the sleevesd couldn't be installed with too much interferance as the blocks could crack between the sleeve bore and the oil gallery where it went up the stud hole. Some primo "LA Sleeve Co" sleeves sorted it all out. My CB360(470cc) cracked the top off a sleeve as well. Fixed that by selling it to Rob for $100.

[husaberg]

Better to cast them in. Or ideally plate if designing an engine this century, Liners are bad M'kay.

From memory the modern Foul strokes don't even need the plating now. Chevy (i think vega) in the 70's started the cast with lots of Silicone or something then etch out the Aluminum later, i think Honda and Yamaha are doing the same now on the R1 and the CBR250 although they might be using MMC or some other ceramic......