question about my 350 engine.?

Question

if i take my 350 apart,clean it,change all gaskets,remove the ridge from the top of each cylinder,wire wheel the ports on the intake and heads,change the timing chain but kept the old camshaft and used new plugs is the motor rebuilt?

Answer 1

No that's NOT a rebuild..That my friend is what I would call half *** try at it.

Rebuilding would be..
:Take apart
:check sizes, clearances, etc on parts as you remove them
:Have block checked for cracks and hot tank cleaned
:Have cyl bores cleaned up (honed if good enough, or bored and honed)
:Have crank polished or turned if needed
:New pistons, rings, bearings in the right size to get the right bearing and piston to wall clearances, ring end gaps, etc, new frost plugs, oil pump, oil pump pickup, gaskets, seals
:Have rods re-cond. if needed
:If keeping the same heads, have them checked for cracks, cleaned, and a valve job done.

You don't use a wire wheel on the head/intake ports.. You use a cutter, stones, and rolls in a die grinder, and you really need to know what your doing before getting into porting heads as the water jackets are close by, and you can grind into them and trash the heads.. Also hogging out a port won't help air flow, you need to understand how air flows and grind the needed places the right amount to get better air flow.

Answer 2

Think about this, that ridge at the top is unworn bore. In other words the rings have worn into the cylinder that much. Now if you look, there is no ridge at the bottom of the cylinder. That's because it gets more oil. It also means the the cylinder bore is larger at the top than the bottom. The problem is when you put new rings in the spring in and out; result broke rings in about 500 miles. Get a book on rebuilding motors and follow it strictly, and have fun.

Answer 3

Actually a completely rebuilt engine has all parts replaced that are not within factory tolerance. For instance: Piston diameter at right angles to the piston pin to the cylinder bore dimension, (different with each brand of piston). Ring end gaps and ring to piston groove clearance. *Ring choice! Cylinder finish. New rod, main and cam bearings. New standard camshaft. New lifters. Re-grindiing the crankshaft if necessary. Undersized main and rod bearings. New press in valve guides if necessary. New valves if needed. New oil pump. Rods completely re-conditioned. New pushrods and rocker arms.
These are all minimums. A Chevrolet shop manual has all the factory recommended clearances as far as rod and main bearing clearances.

Answer 4

Not even close. There is a lot more than that to rebuilding an engine. You aren't even talking about changing the cam that I'm will have worn lobes. The cylinders also need some attention. Piston rings, valves, valve spring tension, and on and on.

Good luck with the engine, and I hope you get it done right.

Answer 5

Taking it apart and putting it back together again is rebuilding it, but just doing what you say is a crummy job.If someone tells tou a car has a rebuilt engine ask them exactly what work went into it and what was replaced with new parts. If a good job was done they would be proud to tell you, if not you'd probably get eavasive answers or a bunch of BS.

Answer 6

Not A Chance. You need to replace pistons, rings, bearings, cam and check the crank and get a valve job also to be considered rebuilt.

Answer 7

I would change out the cam. If you do all that Might as well bore out the cylinders, and get bigger pistons. The Its a performance rebuild, at least in my opinion.

Answer 8

That's only a partial rebuild. A full rebuild will entail new pistons, rings, bearings and valve springs, and a new cam, valves, guides, retainers and rockers, as well as the items you've included. Good luck!

Answer 9

No,I would consider that a freshen up.If your going to do a tear down why not tear it apart put new bearings and rings and camshaft,you would be surprised how inexpensive it is to do.

Answer 10

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