newb engine rebuild

[s13speeddrft]

So I searched and didn't really find anything that hit my questions dead on. First off I have never rebuilt an engine but wanted to give it a shot because if you never try you will never learn but anyways. I was planning on doing the block myself and jsut having a machine shop take care of the head since that is a little more labor intensive, but If i took the block to a machine shop and had them bore out the cylinders to x amount of whatever pistons i get would that be fine or do they have to math the bore exactly to the new pistons? Any info would be great or advice. thank you. Oh yeah almost forgot i am doing a complete oem rebuild on an sohc.

[ManoNegra]

So I searched and didn't really find anything that hit my questions dead on. First off I have never rebuilt an engine but wanted to give it a shot because if you never try you will never learn but anyways. I was planning on doing the block myself and jsut having a machine shop take care of the head since that is a little more labor intensive, but If i took the block to a machine shop and had them bore out the cylinders to x amount of whatever pistons i get would that be fine or do they have to math the bore exactly to the new pistons? Any info would be great or advice. thank you. Oh yeah almost forgot i am doing a complete oem rebuild on an sohc.

If you're doing an OEM rebuild then I would assume you'd be using OEM pistons no? Machine shop will just freshen up the cylinder walls, make sure they're not scarred. And deck the block. That's all you need for an OEM rebuild. New rings and bearings and you're good to go as far as the block is concerned.

[s13speeddrft]

ok i see i was just reading around and read that if the cylinder wall has sustained some abuse it would be required to bore out the cylinders to reshape to original which would mean purchasing oversize pistons to accomodate the new cyliner size. thanks.

[Sileighty_85]

more than likely the cylinders need to be bored/honed, over time the the cylinder walls will become uneven ( new--> || worn -->/ \ or \ / ) you get the idea.. take the block to the machine shop to see which over bore is sufficent enough to staighten the walls, anways if your gonna get new pistons get .20 over (or more if required) and bring them to the Machine shop and they can bore the cylinders to the closets tolerance. Most shops will bore slightly over if you dont bring them the pistons

[louisdaboois]

most machine shops almost require you to hand them the pistons going into the block. mainly because there are small variances in tolerance, so each cylinder may not all be on point. other than that, like everyone else said, just get it decked and squared with the head and you should be gravy. also, when checking rod and main bearing clearances, get some plastigauge, thats cool to use. and DONT lube both sides of the bearing haha, but im sure you already knew that.

[s13speeddrft]

hey guys thanks for the info exactly what i needed.