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Rebuilds dont have to be expensive...shop around for parts, shop around for machining quotes. A perfect example of this is what happened to me last weekend, i need to replace my rear main seal, so im going to throw a new clutch in...that means the flywheel needs to be machined. I called a few local clutch/gearbox specialists, $110-$120 each just for machining. Called the local brake & clutch shop, $90. Called a local engine rebuilder/general machinist, $60. Same happened with my front wheel alignment, quoted in this order...$110, $130, $130, $115, $75. The last quote was also the cheapest supplier of the rims and tyres i got aswel, and that really surprised me because they are a massive chain company, but i guess they have the buying power??
we have a new O'reilly's in town and while i can't vouch for their machine work, they turn rotors and drums and also surface flywheels so you might find that available in your area also. I think the mgr told me $55, but i'm not certain. My brain just responded, "reasonable!"
So, I've got a 2wd 22re with bad rings in cylinder 4 causing low compression and a misfire. I've also got a bad head gasket at 205,000 miles. I don't have the time or desire to do a full rebuild the right way at this point in time. Maybe this winter I'll tear it down and do it right. So I'm thinking of a cheap and dirty "rebuild". The truck is currently running and driving fairly well. I drive it to work 3 days a week as is.
Assumptions:
The cylinder wall is in decent shape.
The piston is reusable.
The ridiculous plan:
Pull the head and send it to the machine shop to be freshened up.
Pull the oil pan.
Pull the piston out of the top of the block.
Examine cylinder wall for scoring.
Hone, if necessary?
New rings on piston.
Reinstall piston with new bearing.
Install oil pan.
New head gasket and install head.
Drive into the sunset.
I guess my questions are:
How bad of an idea is this?
If it goes according to plan, how many miles could I reasonably get out of it?
That's how they did it in the olden days. And cylinder walls on carbureted engines were typically not very good as our fuel injected engines at 100k. rings are cheap. Do all 4 and rod bearings. Also do the timing chain/guides while you have it apart. You can always rebuild it again in the future.
sounds like you are going to get zero miles more out of it if you don't rebuild it.
Mine was torn down completly and every piece cleaned and inspected. Reused bearings and rings, cylinders still had cross hatching 164k on engine. I elected to go with 22re Performance full gasket kit. They claim oe gaskets and they did look the part. Plus they add the aluminum half moons for the head/valve cover. All in i was under $1000 minus degreaser
Why change the rings if the gap is well within spec? The only issue this engine had was bad head gasket. To me as long as everything is within spec then im going to run it, on my personal vehicles.
If i woulda thought they were questionable i would have changed them but i had an understanding of the history of the truck and all was well