AC175D Engine Failure

Did the mechanic install a gasket meant for that sleeve kit?   The reason I ask is because I understand that there may be different parts depending on vintage of engine, if it is like the 354 perkins. (Dot 1, Dot 2, Etc.)

From the looks of things, that head is good and warped. Unfortunately you're looking at another full rebuild if you're going to resurrect it. The only chance of reusing that block means it has to be surfaced to get that burned area cleaned up.

You have a big mess on your hands. No sense scolding you over running it too long, because you've already figured that out. I guess if you are going to try and save it, you need to determine if the cylinder head is repairable or JUNK. If it is junk, you might as well look for a different engine. Not a good plan to make the head OK good and then have a crappy block to go with it. Thirty years ago I had a customer experience a similar thing with a 7045. The top of his block had a shallow groove between two cylinders. We fixed up the cylinder head and made it flat. We replaced the two affected wet sleeves and put it back together. The sleeve lip is what seals the compression, not the block. We torqued the head bolts to 150 ft lbs and then retorqued cold at 165 ft lbs after an hour run on the dyno. My customer was guilty of not keeping the radiator clean and overheating the tractor multiple times. My fix was an effort to limp the tractor along for a couple thousand more hrs until it was time for a real "out-of-frame" overhaul. I think there was about 3,000 hrs on it at the time. He was instructed to never let the temps get over 190 degrees and keep the radiator CLEAN and fan belts tight. Avoid lugging the engine and the harder the engine worked, the less hours of use he would get from the fix. To my knowledge it made it until he retired and whatever happened after that I don't know. The block would have been repaired/welded/surfaced at overhaul time. At the 3,000 hrs mark, that was a bit soon. You are kind of looking at the same thing, except yours was already overhauled. Either the head wasn't flat (didn't get surfaced while apart) or the head bolts weren't cleaned and torqued properly or the head bolts were not retorqued after 50 hrs of use or a combination of all these things has caused your failure. Maybe you have gotten it hot ??   Anyway, you'll see why wet sleeves are king when it comes to overhauls.  Yours aren't wet sleeves.  Do your sleeves stand up out of the block ?? Maybe that was the reason for a blown head gasket ??   I'm not a Perkins guy, but I know some of their repair parts have special issues. Maybe your new sleeves aren't standing up above the block deck surface ??

Edited by DrAllis - 22 Mar 2019 at 6:25pm

Well i can't help you much,but my 175 had exactly the same problem yours has. The trouble is that was about 20 years ago,and my memory that far back is a little foggy. Mine had the cylinder sleeve protrusion broken also. The original sleeves are thin and brittle. I ordered a new kit through a-c and brought them to the local machine shop along with the block,and they bored the block so they would fit. The new sleeves were thicker at the top and looked about the same as yours look in the picture,but if i remember right,they did not have much if any protrusion. We used a different style gasket too. I know all this is not much help,but the engine has run good since then. I used to use that tractor every day to grind hog feed,and did that for years. Don't use it much anymore. Hope for the best for you with this project.

tbran wrote: THERE WAS NO 'UPDATE'  the 175 's 248 perkins was an odd duck industrial engine  -  NO other MF type kit will work. There were NO sleeves available that did not come rough finished, dry type - then after installation required finish honing to size.   You have no idea what he has done to the block.  I would check the head - have it planed , check the block and pray it is close - clean it up - put on a new gasket - run and retorque ... if it holds you are still on borrowed time I  would say for heavy use - if it doesn't -  go for a 4.236 or 4.248 engine and deal with the front pulley to pump issue if it is the late style. The 236 248 engines used on the AC were different - splined front cranks .  We had a customer swap a MF 248 into a 175 and remember there were some issues... but he finally got it done .  Sorry for the vague memory but the point is it is not a drop in....Perkins made more  versions of the same cubic inch motor than carter did lil ' liver pills...

 

Edited by FREEDGUY - 23 Mar 2019 at 3:48pm

I have a Perkins,too
Runs like a top. Leaks everywhere!

The 2200 series was only 200 cubic inches, and that's not enough cubes for a non-turbo engine to make 54 to 62 PTO HP.  As with the Perkins 236 and 248, there is a reason and the reason is it takes cubic inches to develop a certain reliable HP @ a certain speed. You would have thought the Harvey Engine Division people would have thought ahead to that scenario, but I guess not.

The Harvey Engine plant could only do what the "Folks" up at West Allis would let them/ told them what to do and by that the focus was on money.

The 200 CI 433 was one of the higher production unit - they did get the price to sell them to lots of other mfgs -  Pumps, Barko loaders, the Allis tractor , F2's ,  generators  volume makes a difference!