Found some interesting stuff (opened my block)

TDGKORN · Post by **TDGKORN** » Mon Mar 21, 2005 4:21 pm

The good news:
piston squirters are all still in.
pretty good shape for 200+k

The bad news:
#4 piston in bad shape

#4 cylinder in bad shape

and the worst is the thrust bearing is completely destroyed

Troy

professor · Post by **professor** » Mon Mar 21, 2005 4:59 pm

now you'll be forced to get the forged pistons you really wanted anyway

TDGKORN · Post by **TDGKORN** » Mon Mar 21, 2005 5:04 pm

Forged pistons are overkill for what I want out of the engine.

300hp is all that I'm looking for. From the people that I have talked to the stock short block is plenty strong to do it.

I will be getting some different bearings though.

Post by **Legacy777** » Mon Mar 21, 2005 7:12 pm

what bearings you getting?

TDGKORN · Post by **TDGKORN** » Mon Mar 21, 2005 7:21 pm

I havn't decided yet, either cobb or crawford piston ones.

I just talked to http://www.ccrengines.com/ and they said that the reason the bearing was chewed up so bad was the fsm has a wrong torque spec for the crank pulley bolt. The fsm says 76lb/ft and they say 125lb/ft.
Anybody else ever heard of this?

boostjunkie · Post by **boostjunkie** » Mon Mar 21, 2005 10:24 pm

Yeah, that problem has been discussed on this board before. A few people had the crank pulley come loose a little bit and chew up the key. But no one's actually taken apart the engine and noticed internal bearing damage because of this.

It makes sense, tho. Without the dampener properly fitted to the crank, there will be excessive force on the crankshaft bearings.

TDGKORN · Post by **TDGKORN** » Mon Mar 21, 2005 10:29 pm

They said that 9 out of 10 times if the main bearings failed, it had been within 6-12 months of a timing belt change.

Makes you want to retorque your pulley bolt doesn't.
I know I will tonight.

THAWA · Post by **THAWA** » Tue Mar 22, 2005 12:31 am

Damn, maybe that's the cause of my failure. I did notice a wierd noise a couple nights after i finished the headgaskets but thought nothing of it because it only lasted a minute or so.

TDGKORN · Post by **TDGKORN** » Tue Mar 22, 2005 12:33 am

Yeah mine started making a strange noise a few days ago. Hopfully its not to late.

Matt Monson · Post by **Matt Monson** » Tue Mar 22, 2005 7:43 pm

Get the Cobb bearings. Sorry to see it in such bad shape. Hopefully it isn't so far gone that you can't hone it out without overboring...

TDGKORN · Post by **TDGKORN** » Tue Mar 22, 2005 7:47 pm

I'm still looking for a machine shop that will even look at it. All the ones in my area are domestic only.

evolutionmovement · Post by **evolutionmovement** » Wed Mar 23, 2005 12:05 am

Maybe try a marine place. They have to do all kinds of engines.

Steve

TDGKORN · Post by **TDGKORN** » Wed Mar 23, 2005 12:15 am

I finally found a place that can do it but, I also found out that there are no oversized pistons available from subaru.

this post talks about it http://bbs.legacycentral.org/viewtopic.php?t=20735

There is a chance that I can hone the cylinders and take out the scuffing. If that works I can use a stock size piston.

I'm going to take some measurements tonight and hone the bore to see if its worth moving forword.

Troy

legacy92ej22t · Post by **legacy92ej22t** » Wed Mar 23, 2005 12:26 am

IIRC a set of custom forged piston are actually going to run you about the same price as new OEM ones. Food for thought.

TDGKORN · Post by **TDGKORN** » Wed Mar 23, 2005 12:34 am

My two posts should probably be merged.

sorry

legacy92ej22t · Post by **legacy92ej22t** » Wed Mar 23, 2005 12:49 am

I responded in your other thread.

evolutionmovement · Post by **evolutionmovement** » Wed Mar 23, 2005 12:53 am

I think Morgie paid like 130 for customs from cp pistons.

Steve

legacy92ej22t · Post by **legacy92ej22t** » Wed Mar 23, 2005 12:54 am

Whaaa? I thought they were around $460 usd.

TDGKORN · Post by **TDGKORN** » Wed Mar 23, 2005 12:54 am

really?
They just quoted me $575 for a set.

legacy92ej22t · Post by **legacy92ej22t** » Wed Mar 23, 2005 12:57 am

Looks like it was $135 per piston.

http://bbs.legacycentral.org/viewtopic. ... ht=pistons

TDGKORN · Post by **TDGKORN** » Wed Mar 23, 2005 12:59 am

That sounds a little more like what they quoted me.

morgie · Post by **morgie** » Wed Mar 23, 2005 5:23 am

I replyed to the other post

135$USD is what i paid for the custom pistons, including pins, locks, rings.

be sure to mesure your worst cylinder before ordering your custom oversized pistons! And verify with your machineshop what oversize they prefer work with. (.20mm, .25mm.. )

evolutionmovement · Post by **evolutionmovement** » Wed Mar 23, 2005 5:57 am

At first I was like, whaaaaaa?!! The I realized you were using metric examples for the oversizing.

Steve

morgie · Post by **morgie** » Wed Mar 23, 2005 1:31 pm

oups yeah, i edited to include unit

ehe .20"Oversize, that's huge! haha

professor · Post by **professor** » Wed Mar 23, 2005 4:22 pm

From the look of that scuffing, I don't think you have a chance of honing that out. It might look OK when you are done, but the eccentricity would be terrible compared to acceptable specs.

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A forum for 89-94 BC-BF(BJ) Legacy Owners and Fans

Found some interesting stuff (opened my block)

Found some interesting stuff (opened my block)