taking engine apart, found some problems

[StangerJon]

I am in the middle of taking apart a 2.3T engine at school. it was sitting in a guys shed for a few years, and he got it from a yard most likely. so I imagined it was going to be a little rusty/dirty.

well, today I got the head off, and one of the cylinders is full of rust. to the point where the motor wont turn over because of it. so I take the crank out and all that good stuff, and nope, cant get the piston to come out of that cylinder.

any idea's on how to get it out? my teacher said he could get it out, but I would be buying a lot of parts after he did. so I assumed he would be using a large hammer. so I would be buying new pistons and sleeves for the cylinders.

my original plan for the engine was to just bore it .010" over and buy .010" rings for the pistons since they are forged aluminum stock, and seeing as how I am broke, it would be cheap. does this even seem possible? or would all the rust being there cause that much of an issue to where I would have to go .030" over?

like I said, I would like to keep this as cheap as possible. but if I have to spend money on it, so be it.

[RayK]

Take that stuff to dissolve rust and put in the cyl. Then take wooden hammer handle and put it against the piston. Tap the other end of the handle and work your way around the edge. Don't pound the shit out of it.

[2 beer]

sounds like you have Mr. Rabanus for a teacher. Anyways I would never use ".010 over rings". especially if you are running bost bore it out as little as nessasary and put forged pistons in it. As far as getting the piston out pour some trans fluid into the cylinder and let it soak

[NAZISALEEN]

I believe you can use Muratic?? acid to desolve piston outof hole..

[Akromix]

nazi, that's just to get melted aluminum piston off of piston wall. Don't use it to get a siezed piston out. As one other has said, use tranny fluid.

[Grifter]

pour some Marvels Mystery Oil in there. thats what it is for..

[Turbo302]

You are not going to save that bore anyway with a hone job if there is that much rust in it. Plan on .030-.040 overbore, so soak the thing with some penetrating oil, and hammer the thing out.

Never run an overbore block with a standard piston. You can hone them to run loose and get file fit rings which typically are .005 larger than stock and fit the rings. Example: if you are running a 4.00 measured piston, you will typically have a finished bore of 4.003-4.005. I have seen motors run with big clearances in the .007-.009 (noisy piston slap), but they were dedicated endurance track only engines that the pistons will swell greatly.

Assuming that block was perfect, but just high mile it would probably be on the loose side (ex: 4.007), you hone it to clean up at 4.010, you would probably be able to run it, but it would consume alot of oil running on the street at low temps (crusing).

With that block being rusty, it will not clean up like that, so I guess what I am saying is just get that piston out however you can (break the thing), just dont wreck the block or rod if you want to use those. You'll have to get new pistons anyway with the block at .030-.040 over.

Tim

[Steve]

Yeah, get ready to go .030" over. On the bright side you only need 4 new forged pistons.

[StangerJon]

alrighty. the piston is soaking in PB blaster for the weekend. sanded down the rust on the walls pretty good, so hopfully the piston will come ou nicely on monday. I dont want to fuck up the walls to much and have to put new sleeves in it. since it appears I get to buy some new pistons.

[TurboX2]

Find a different block.....

[Drunko McMoppo]

Take that stuff to dissolve rust and put in the cyl. Then take wooden hammer handle and put it against the piston. Tap the other end of the handle and work your way around the edge. Don't pound the shit out of it.

Yup, it'll take a while though. The guy with that primered BB Cutlass with the gear drive did that to his motor before he put it in the car, said it took him 14 hours.

[Zinc]

Find a different block.....

[prostang92]

hope it was cheap jon... good luck... obtw 2.3 dont have sleeves... you would have to install them...

chris

[StangerJon]

hope it was cheap jon... good luck... obtw 2.3 dont have sleeves... you would have to install them...

chris

$100 for the long block.

[allstock93gt]

other wise diesel fuel works well to get seized 2 stroke motors turning again!