Engine Overhaul

[bippu z]

Hey guys, since I'm definetely not a mechanic and I want to do an engine overhaul I was looking for advice on what should be replaced. Here's the specs on it, from what I know.

1974 L26 w/ 240Z carbs. (not sure of the year)

everything else is stock. uhm replaced rear electric fuel pump and valve cover gasket and some random fuel hoses. Which reminds me, im planing to replace most of the fuel lines too, they've been sitting for 10yrs.

Im not looking to upgrade anything, just get it back to running condition, since it's gonna be my tester motor. Im planning on swapping an RB26DETT in, just for planning info.

So, back to the question. What should I replace?

Pistons, rods, cam, vacuum hoses, fuel lines, ect. What else?

[redneckz II]

:pirate: Most of the engines that I have had the pleasure of rebuilding, I have had to only replace the pistons with .20 to .40 oversize pistons w/rings. Some people only had to rehone and put in new rings to make it work. Our engines have a good rep. for lasting and will last a long time under normal usage. You may want to do a leakage test on the cylinders first, before doing anything with it. If it needs it then do it, while at it you can have a three angle valve job with new oil seals done to the head. Also look at the bearings, new ones can help if the crank is in good shape. If it isn't, you can have it turned and go with the size bearing they tell you to get. Other things you can do is:

Make sure the block top is flat and true.

Make sure the head bottom is flat and true.

New timing chain.

New gaskets.

New water pump. (very important)

All of this will help the engine. If you are like most of us, do it all and enjoy the feel that the new engine will give you. For more power you can alway add a L-28 engine with flat tops. Good Luck, Rich.:classic:

[Walter Moore]

If you are sure the engine needs rebuilt, find a good machine shop in your area, and after you dis-assemble the engine take them all the parts.

(Leave the head intact, a good shop will want to take that apart themselves.)

Have them inspect EVERYTHING. They can tell you what needs replaced, but generally you should expect to spend at least $900 for the parts and labor. That should cover the head work as well. Then you will have to re-assemble the engine. Get a good manual, and follow the directions closely. Most people also replace the cylinder head bolts just to be safe. (The shop will probably recommend that as well.)

Good luck.

[bippu z]

awesome guys! well, i'm gonna try all the stuff i've learned on this forum in the past few days. you've all been a great help. but, if it doesnt start up after i put some oil in the cylinders and all that other stuff im gonna have a mechanic strap it up to all the machines he's got and take that engine apart.

it's going down.