Just used plastiguage

[BITESIZE]

I just got done with one of the caps on my rod bearing...

The back of the bearing reads C1-2200 and the plastiguage on cylinder 4 reads .002.

Specifications are? (This is all in inches)

What am I looking for?

[BITESIZE]

Someone please help

[SteveDX89]

Main Bearing Clearance = .0010 - .0022 inches @ journals 1, 2, 4, and 5
Main Bearing Clearnace = .0013 - .0024 inches @ journal 3
Rod Bearing Clearance = .0008 - .0015 inches

[BITESIZE]

So what does the plastigage at .002 mean?

[88Accord-DX]

So what does the plastigage at .002 mean?
Means your bearly in tolerance.
"2 thousandths of an inch"

[BITESIZE]

So if all my bearings read that, they will be fine right?

[88Accord-DX]

I would replace them with new standard size bearings since they all read that. It would bring them up to a better tolerance & give you longer life on oil pressure along with not worrying about spun bearings.

[BITESIZE]

I haven't plastigaged all of the bearings yet. But they were done not too long ago by the guy that gave me the block. They look really brand new. He said that he thought he heard them knocking. They look fine and the block looks fine in and out. So are these bearings the .000 standard ones do you think? It says C1-2200 on the backside of the bearing. Would the .25 undersized work better?

[88Accord-DX]

You need to plastigauge all your rod & main bearings first to determine if anyone is out of tolerance.. That is a rule of thumb before the next decision can be made.

[BITESIZE]

Is it bad to change just the rod bearings and not the main bearings? I don't want to remove the crank.

[88Accord-DX]

You don't have to drop the crank, just pull one main bearing cap off one at a time & plastigauge it. I see what your worried about doing now. No, you don't have to drop the crank out.

[BITESIZE]

So in all, I should have 8 rod bearings, and 5 main bearings? I didn't even thinnk about not having to pull the crank out. I will just remove one cap at a time. The main bearings and rod bearings are sold seperate right?

[88Accord-DX]

Yeah, there sold seperate. 4 rods= 2 bearings on each side. The thrust washer goes on 3rd main bearing. Sometimes you can spin the top bearing in from the bottom. Just make sure it is goes in the way you removed the old one. They have notches on the end off them to keep from spinnning. If you want, take the spark plugs out so you can move the piston up. Just make sure you don't score the crank journal.

[BITESIZE]

Damn bearings are expensive! So if all of the rod bearings are .002, what size of standard bearings should I get?

[88Accord-DX]

Sometimes I see Clevite rod bearings on ebay pretty cheap. They are the better ones. Not to often do I see main bearings on there.

Definetly get Clevite rod & mains bearings if you can. Their the better quality ones.


Damn bearings are expensive! So if all of the rod bearings are .002, what size of standard bearings should I get?

Standard size

[BITESIZE]

It was funny because I started using the damn green plastigage and then realized it was in mm not inches. I was pissed, cause I had to start over. Not a big deal, but I was excited to start on it and learn something new. So don't use the damn green plastigage just the red one!

[88Accord-DX]

Well, the tolerances are just bigger on one than the other. One size measures a different tolerance. One is metric & one is standard. Don't forget to use engine lube when you install you main & rod caps.

[BITESIZE]

I did all the headwork myself. Brake cleaner works awesome. It looks pretty damn clean. I was wondering what the best thing to use on the head journals where the camshaft lays on the head? How to get them unscored. They aren't horrible. I'm just picky. Should I use high grit sandpaper maybe 2000 grit?

[88Accord-DX]

Well, the journals never need sanding with any kind of sand paper. What they look like is what you have to deal with. If you sand on it, the cam lobes will be worse than what they where. These heads don't have cam bearings like some other heads. I'm not so sure that they can be lined bored & undersized bearing inserted. Don't even try sanding them down, that will only take the tolerance out more than what they are. Just have to deal with it.

[BITESIZE]

They aren't way bad, not too bad for how old the head is.

[88Accord-DX]

Don't sand on them, seriously. It will make matters worse.

[SteveDX89]

Pretty sure the cam journals get filled with oil and the cam spins in it. Kinda like what the bearings do for the crank. So yeah, the scratches in the journals will just fill up like the rest of the journal.