Turbo_Dreams

Ok so heres the story, like a dumb ass I let my motor run low on oil and now it has a knock. I'm getting ready to pull it out and rebuild. The motor itself has less than 15,000 miles and if it matters its a 4g63. So heres my questions.

1. Are my rings still good or should I replace them?
2. What kind of machine work should I do to the block, such as honing the cylinders and whatnot?

and any suggestions on parts would be appreciated as well, like who makes the best bearings, or any other details I should be concerned about.

Thanks in advance

Jarrod

Rehone the cylinder.
You better hope your crank is good.
You better hope your block is good. If it got low enough on oil pressure/oil then you coulda fucked up the mains.

What bearings did the dude use when he built the motor?

I know nothing of these motors but I can lend you a hand in some way.

Get new rings and bearings. Take your crank and block to abacus and get seth to check it over.

-Jarrod

Turbo_Dreams

no idea on the bearings and ill probably holler at you as far as some rebuild help. i got my fingers crossed on the mains i dont think it got that bad but knowing my luck itll all be destroyed. Thanks lil buddy

krazdracer

they sell things called bottle hones just to riugh up the cylinder walls after lowmile rebuilds. (its diy)
oil starvation as jarrod said, new rings/bearings.
hopefully you won't have to get the crank turned.
Hunter

Jarrod

Whats the oil look like? Have you flushed it all?

And please allow a machine shop to hone your block, don't do it yourself.

Also. Start searchin' on the ring gap that these motors like. What power was it putting down? Research what people are putting their gap at around your power goal.

Turbo_Dreams

to be honest i haven't really touched it yet, i towed it over to my dads house yesterday so i could get a lil more room to work with.

Im pretty sure im gonna take the short block to abacus after i take everything apart, let them check everything out and then reassemble it.

As far as ring gaps from what I've looked up .018-.021 for the top ring and .023-.025 for the bottom seem common for the 350-500 hp range, so i might go just a tad bigger to be on the safe side, and the oil ring doesn't really need to be gapped and should be around .015

Audio

well if you are getting any machine-work, take it to Abacus. Seth and Chuck are great guys and will lead you in the right direction. I wouldn't trust anyone else to do machinework.

But yes, hone, new rings/bearings for sure.

Jarrod

Well now me and the mad scientist gotta tear it apart after the 100 shot of NOS blew the welds on the intake manifold.

Lemme know whatever you do.

Turbo_Dreams

haha you know i got datz custom aluminum manifold my welds is strong like whoa
and thats without vtak, my shits got so many turboz its sound like a mac truck

but on a serious note ill probably be getting my soon to be engine shop set up tomorrow and the motor will hopefully be out next week.

im juggling the eclipse and the impala, plus a few other projects but im gonna try to push the dsm to the top of my list its been broken for far too long