89 supra piston ring - Toyota Nation Forum : Toyota Car and Truck Forums

aziankingz · 10-26-2004, 10:30 PM

how much would it cost for a piston ring for an 89 supra non turbo? And how much would it be to install it also?

Thanks

repinS · 10-27-2004, 08:53 AM

... you're looking at a potential engine rebuild to get rings done.

aziankingz · 10-27-2004, 08:55 AM

engine rebuild for 1 missing piston ring? explain more why i need a rebuilt engine?

repinS · 10-27-2004, 10:36 AM

Put it this way. If there's any part that's more out-of-place and unaccessible in your engine, it'll be the piston rings.

aziankingz · 10-27-2004, 10:48 AM

but it doesnt result to a full engine rebuild does it? he might have taken that off to put it onto his other supra. If anything, i would get a compression test, replace the ring, and maybe change the head gasket(if necessary)

Pineapple · 10-27-2004, 11:29 AM

You'll need to either pull the head or just drop the crank to get to the piston.
Since you're doing that why not rebuild the whole thing with new bearings and seals? Pulling the head will need new head gasket anyway. Dropping the crank will need new front/rear crank gasket, oil pump gasket maybe even water pump gasket. Should change both crank seal too.
I just rebuild the 5S-FE on my Celica. Full engine gasket and seals is around CAN$300 and set of 4 piston rings $270. Crank bearing set is another $300. All from dealer.
Check it out on CC: http://corollacustomz.oaknet.ca/index.php?a=topic&t=308

repinS · 10-27-2004, 11:42 AM

Quote:

Originally posted by aziankingz
but it doesnt result to a full engine rebuild does it? he might have taken that off to put it onto his other supra. If anything, i would get a compression test, replace the ring, and maybe change the head gasket(if necessary)

Your buddy took used PISTON RINGS off an existing car to use on another one?

... "maybe" change the head gasket? If you're going to take the pulling the head (and not pulling the crank, as stated above) approach, you'll HAVE to change it. Top end or bottom end rebuild, your pick. Always the best idea to do both.

Pineapple · 10-27-2004, 12:17 PM

Oh sorry gotta pull the head. You have to install piston from the top. If you can lose the rod and push the piston out, you don't need to drop the crank. You need to pull the oil pan anyway.

aziankingz · 10-27-2004, 02:26 PM

thanks guys. how much to do all these?buying the parts and servicing the car?

You think maybe i could just replace the ring and then do the head and cranks later when i get enough money? I mean, it would still be good to drive after i replace the ring right? Or will there be follow ups of problems that can occur? Or maybe i can save up and get a new engine, would that be easier and smarter? I heard the 7m-GTE goes for about 750-950 and to rebuild the engine would cost around the same amount.

repinS · 10-27-2004, 03:40 PM

It's not a good idea just to replace one ring. If one went bad, the others may not be far off.

If you're doing rings, you have to do the head and/or crank, depending on whether you access the rings from the bottom or the top. So pick your pick, rings + crank/rod bearings/etc, or rings + head.

You might as well replace the whole motor, I say this because of the fact that you really have to ask us on what to do in a situation like this. Save the time and hassle.

aziankingz · 10-27-2004, 09:51 PM

thanks man..how much a rebuild go for? i heard 2K?

Jeeves · 10-29-2004, 01:21 PM

I've seen rebuilds go between 1.5k and 3.5k

Krypto · 10-29-2004, 05:49 PM

The pistons will NOT come out from the bottom. Impossible...they will need to come out from top. You are looking at a full rebuild which will run anywhere from $15-2500.
I have a fully built long block for the 7MGE along with BRAND new pistons AND rings. Remachined and over bored block with crank redone and new rod/main bearings all around. Block is also decked and comes with ARP goodies for the head bolts AND a metal headgasket so you wont have to worry about you blowing your stock one. Guys I built this one for backed out on the deal...if you're interested...email me at Kryptooknight ...

Kruso

aziankingz · 10-29-2004, 06:59 PM

might as well get a 7m-gte for 1000 that i saw online..and to install an engine would be around 500 right?

Krypto · 10-29-2004, 07:28 PM

Not really....doing a swap like that is a little more then bolt on. Alot of the cars after converted were never dependable again. You're looking at swapping over a new harness, ecu's, intercooler setup, piping, ignitor, and a butt load of other sensors...
But definitely possible, looking at about 2500~ or so for the swap. Dr J does this for 2500...knows his stuff...

Kruso