1550 engine?

Anonymous-0

Well-known Member
I am going to put new pistons and sleeve kit in my 1550 is there any good or bad for doing an over bore kit(3 3/4) or just do the standard bore? Also I have never removed sleeves any tips on how to do so.
Thanks Roger
 
Old sleeves are usually hard to pull out. Engine in the tractor or out? If in you'll have to work around the crank to clean the bottom bores and a lot of stuff may fall out of the water jacket.
 
Engine in or out?

I am guessing in, so would seem like you need a sleeve puller.

But before overhauling the top half, I would be making careful checks for ovality, etc of crank, especially if upping the power with bigger pots.

RAB
 
why not do a good job, remove engine, replace seals, all bearings, cam, mains, rod, send out crank, probably needs to be ground .010 under, depending on hours, clean oil galleys, complete short block, long as you are going thru the motions...
 
I agree with 90 owner. I meant to add that to my comment. With new pistons and pins you should replace the rod bushings. By the time you go that far it isn't much more to grind the crank and get new bearings, unless they're in especially good condition.
 
Removing the sleeves will be the easy part. They are "wet' sleeves. I would do an out of frame and do it right.
 
Mike,

We were obviously keying in at the same time. I was behind you because I was pondering as to why the OP would be doing this, although it appeared he had made up his mind to strip the engine to that state and rebuild. Looking back at the previous posts by the OP leads me to really wonder what is going on, what the reasons might be for this somewhat arbitary decision, and whether changing items on a diesel has been thought through (as to the effect on other components).

I am not aware of the design of the components and wonder whether the OP is, either. Like, does this raise the comp ratio or do the pistons compensate? As I indicated, seems fait accomplis without due consideration. I might be wrong, but I would anticipate the desired outcome in this particular instance may not be accomplished.

RAB
 
Roger, I have had the 3 3/4 overbore in my 77 [basically the same engine] for more than 30 years with no problems. They sell those kits on here and told me they are made in the U.S.A. Just take a hammer and a block of wood and drive the sleeves out from the bottom. Chuck
 
Thanks for the info. I will be doing an out of frame overhaul, and sounds like of oversize will be no problem and get alittle more power. It also appear I have some wear on the splines on the trans side shaft where the chain coupler is any ideas or suggestions?
 
Overbore sleeves have been going into engines for years. A little more power? Probably, but even std bore will do that if you're replacing worn-outs. As to your post on the chain coupling, if the shaft splines are worn I would suggest contacting Tim at Smitty's Tractor. I just met him last Thrusday, great guy, good advice and literally "tons" of parted out Olivers.
 

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