Short Block Advice

[stanggy]

Well took apart my "rebuilt" motor and well I can see the $$$$ leaving my wallet.

I was told it was 88 Tc motor - wiseco pistons crower rods.

None of that matters now but where should i go? pull it and take it to a machine shop or just track down another short block?

Walls don't look scored, but no cross hatching is visible. this is the worst piston #2, #3 isn't much better, 1 and 4 look fine, the head gasket was blown from the water jackets to 2 and jacket to 3.

Any help would be appriciated.

Thanks

Justin

[8T6 SVO]

Could have been rebuilt - Those don't look like stock pistons.

Tear it down the rest of the way, take it to a machine shop, have them tell you what you need.

[BrianO]

those will have to come out, they aren't forged pistons..they look like NA ones.

these are the kind the TC's and SVO's came with..D shape. remove, rebuild.

http://www.svoca.com/forum/attachment.php?attachmentid=20992&d=1204487798

[8T6 SVO]

Well,

If the cylinders & pistons are ok, I would probably put a new 8993 head gasket on it and see what happens.

Is this something you just had rebuilt and the head gasket blew or have you been running the motor for some time - with no other issues? Head gaskets go on these motors, more that a typical N/A motor - especially when they've been rebuilt.

[stanggy]

The pistons are in pieces so they have to come out.

I will be calling MD on monday and see what pistons and rods they recommend. and hopefully get it to the machine shop tuesday.

hopefully only a bore and new pistons and rods.

[SVOeric]

Well,

If the cylinders & pistons are ok, I would probably put a new 8993 head gasket on it and see what happens.
.

umm dude, you saw the pic of the piston, right ?
Those are definetly not stock turbo pistons, I'm not real sure what they are. Just make sure whatever you replace them with is forged.

I'm almost wondering that is a long-rod motor? the top ring land looks really close to the top of the piston

[luvtolean]

I'm almost wondering that is a long-rod motor? the top ring land looks really close to the top of the piston

Yeah, that looks pretty thin, dunno if it's a trick of the angle or what.

Not the best design for durability in a turbo motor!

[Jcamper]

I think you'll find those are forged Wiseco pistons, thats what it looks like. I am not a fan of their piston design for the very reason your pic shows. They get real thin right there on the edge, good spot for failure, did you get some severe detonation? You will probably be able to reuse the rods if they are indeed Crower sportsmans. Jcamper

[dagenham]

short block advice

I rebuilt a n/a motor years ago that was actually missing a chuck of the piston when I tore it apart. I had to have it bored 40 over, which I'm told is max for these engines. Check the top of a piston and see if it is marked with an overbore size i.e. .010 .020 etc. If they dont have any markings on them then more than likely the engine has not been bored out.

[8T6 SVO]

umm dude, you saw the pic of the piston, right ?
Those are definetly not stock turbo pistons, I'm not real sure what they are. Just make sure whatever you replace them with is forged.

I'm almost wondering that is a long-rod motor? the top ring land looks really close to the top of the piston

Yes,

I now see the issue. When I looked at it earlier, it looked like it was a carbon reflection off the cylinder wall. I didn't want to direct anyone in the wrong direction, thus my second post.


Tear it apart like I told you the first time!

[stanggy]

Bring the block to Tucson and we can measure the bores.

Be careful I just may take you up on that.

And thanks everyone for your advice.

[stanggy]

So i called 3 reputable machine shops and none of them know anything about these motors. Is this a big deal?

[hotrodfeguy]

By the looks of it there is no ring groove. I would just hone new pistons/rings and run it.

[SVORob]

Hmm

Looks kinda familiar now where is that Photo?
Looks like a long rod piston to me I have one here that looks allot like that one. almost a year ago

[Horsewidower]

Broke 4 pistons in exactly the same spot. JEs with 5.7 rods.