So I have been given a 1994 Plymouth Sundance 4-door with the 2.5L 4-cylinder engine. It has only 98,000 miles on it, and the body is like new, but the engine knocks loudly. Also, the “check engine” light is on, and the speedometer does not appear to work. I am interested in restoring this car, m…

Had you done something bad to the person who gave you this piece of junk?

That is good. I have been there, done that with packrats. Get cats if they continue to be a problem and the only problem will then be the dead ones the cats bring you. While this wouldn’t be my ideal car to rebuild, it might be a good learning experience for another project down the road. I woul…

been awhile since i had a crank ground. 010/010 was a common term? .010 removed from crank journals and .010 from rod journals. 1 mm is .039" so .25mm is .00975? you are going to sand down .010 from steel journal? that should be interesting. and use a squeeze fit when done? what is normal bearing cl…

There is NO way to “polish” 0.25 mm off that crank pin while it is IN the car to fit the new bearing and still be round. No way. You might polish it as best you can and fit a standard size bearing in to check clearances. Use Plastigauge for that. Look up the proper clearance but I’d guess it is abou…

Pull the engine… You will be glad you did. Working around everything like you are planning is simply more work in my opinion.

So I have thought about the fact that in order to polish the crankshaft journals and have them still be accurately round, the crankshaft must be rotating–preferably in the direction which the engine runs. I have found 600-grit emery cloth online, which is 1" wide, and comes in a roll of 150’. I th…

[image] bcohen2010: My plan is to push all four pistons up to the top of the cylinder bore, and hold the emery cloth against the journal from below, while a helper turns the engine using an electric drill with a nutdriver bit on the crankshaft pulley. Will not work. The crank throws will hit …

[image] bcohen2010: I can buy this engine used from a local “you pull it” yard for less than $300 including tax and the “core charge” which I never get back. Why won’t you get the “core charge” back?, just give them your old engine.

There used to be a machine that would regrind and polish the throw on a crankshaft without removing the engine from the car. The oil pan had to removed of course. The machine was portable and there were machinists who would travel and provide this service to auto repair shops. I saw a machine ope…

Easiest way to repair an engine which knocks, without pulling it from the car?

Maintenance/Repairs

NYBo January 13, 2019, 3:51pm 24

With all that trash in the oil, I don’t think simply replacing the rod and crank bearings is going to cut it.

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Easiest way to repair an engine which knocks, without pulling it from the car?

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