YM 1700 sleeves

[kryp]

Can anyone tell me if the YM 1700 has wet or dry cyl seelves?

 

[allenp]

The YM1700 has wet sleeves.

 

[kryp]

You are a great help to me Allen, I think the water is passing the o-rings on the seelves to the base. Now do you sell parts buddy?

 

[allenp]

No I don't. You need to talk with Leonard, Bruce or one of the other dealers that frequent this board.

 

[bruce1966us]

The YM1700 sleeves are no longer available. The good news is you can use YM2000 sleeves, pistons, and head gasket and therefore have a bit more horses.

Thanks,
Bruce
parts@yanmartractors.com
866 794 4498

 

[kryp]

ygm.... and I will phone you tomorrow.

 

[Soundguy]

Does the block have to be machined to accept the ym2000 sleeves? or is the outside diameter the same?

How much more HP do you estimate with the new pistons, etc.

Does this cause any valve problems?

Chris

 

[Anonymous Poster]

The sleeves fit with no machining because the blocks are the same. It is hard to estimate HP because the injector pumps are different. No valve problems.

Thanks,
Bruce

 

[Soundguy]

This looks like a question for ( drum roll ) Roger Scotty (echo)

Roger... hypothetically replacing a ym1700 cylinder sleeves with ym2000, and acompianing pistons, etc.
Is ther more CI displacement? I'm assuming yes... if the id of the sleeves is less than the 1700's. Now, the injector pump is still calibrated for the lower ci... will there be mixture problems ( lean? etc? ) ( higher air volume... same amount of fuel injected )or will it be necescary to adjust the pump, or would it run without adjustment?

Just wondering...

Chris / Soundguy

"The sleeves fit with no machining because the blocks are the same. It is hard to estimate HP because the injector pumps are different. No valve problems.
Thanks,
Bruce "

 

[allenp]

Since the HP will increase, what about engine cooling? Since the 1700 does not have a water pump, I would assume the propensity for overheating will increase? Just wondering if anyone has already been through a 1700 rebuild and used YM2000 piston/sleeves?

 

[normde2001]

I don't have my manual handy, but I strongly suspect the difference in bore size will go totally unnoticed except with a micrometer. No different than boring a car engine to clean it up.

 

[Soundguy]

I was beginning to think that.. especially if the block is the same size. Add to that... if the block is the same.. that means the 1700 sleeves have a thicker wall than the 2000 sleeves... I think I would rather have the thicker walls....any comments?

Chris / Soundguy

 

[allenp]

The bore on a YM1700 is 85mm verses 90mm for a YM2000.

 

[normde2001]

That's a bigger difference than I would have thought, however it should work.
Kryp, I hope you have done enough troubleshooting to convince yourself this is the problem, as it will be an expensive repair if wrong. I looked back to your original posts on Yahoo and you mentioned water squirting up thru head but couldn't tell from where. (valve guides?) I would check that block really close for cracks and if sleeves are leaking there will probably be corrosion.

 

[kryp]

I am not sure what my next step will be on this one, I wanted to get the head pressure tested but it seems no one here does it. I had the head magafluxed and shaved but a pressure test would tell all on the head, looks like I may have to ship the head off for that or make a plate to bolt on it and do it myself and then use the plate on the block but I am not sure if standard water pressure will be enough of a test. I can also drop the pan yank out the sleeves and change the just the o-rings for a cost of about $50.00 in parts and thats the game plan I have so far.

 

[normde2001]

Sounds like some good ideas. If you can make a plate to bolt over the block, you could use a radiator pressure tester, I don't think too expensive, to test the block. Don't know how you could pressurize the head. If you get a leak then pull the sleeves and inspect everything carefully with a good light and a big magnifying glass.

 

[kryp]

To test the head I would bolt the head and plate together with a gasket, seal front water pully housing and use the upper radiator outlet to test with. Radiator pressure tester(Hum) sounds good to me and that will be my next step unless I am missing something about the head your talking about. I know I can not see to much topside on the head but it should let me know on a crack.
thanks

 

[bruce1966us]

Kerry,

We can check and/or repair the head if you have no one else near you. One year warranty on the head.

Thanks,
Bruce