Engine Guys, Need Advice on a Block...

[GerRod]

I found a 4.6L 3L2E block, but it has damage in one of the cylinders. I was told it was gauged by a wrist pin. The owner says it could be cleaned up probably with a 0.010 over bore, but definitely with 0.020. What do you think? If it doesn't clean up with a 0.020 or 0.030 over bore, can it be re-sleeved?

If I'd get it, I'd drop a 9.8:1 302 stroker rotating assembly in it.

 

[Mustang30212]

Not trying to threadjack...but....

If that block doesn't work out...I have a nice standard bore one.

RH

 

[GerRod]

Not trying to threadjack...but....

If that block doesn't work out...I have a nice standard bore one.

RH

Thanks, I'll keep that in mind.

 

[dream07]

If those 2 gouges are as deep as the picture looks, you won't clean that up, even at .030". Remember, a bore of .020" takes only .010" off of the surface. That is just over a hair thickness. If you really want an accurate answer take it to a true machine shop, don't ask the seller.

After many hundreds of dollars into that block for re-sleeving, boring, honing, deck cleanup, and align-honing, you may find yourself wishing you got a different block to start with. I know it's hard to pass on an aluminum block when you have it in your hands, but they are not rare.

 

[Mustang30212]

but they are not rare.

LOL...ya...I have a couple.

RH

 

[bigray327]

You should pass.

 

[GerRod]

If those 2 gouges are as deep as the picture looks, you won't clean that up, even at .030". Remember, a bore of .020" takes only .010" off of the surface. That is just over a hair thickness. If you really want an accurate answer take it to a true machine shop, don't ask the seller.

After many hundreds of dollars into that block for re-sleeving, boring, honing, deck cleanup, and align-honing, you may find yourself wishing you got a different block to start with. I know it's hard to pass on an aluminum block when you have it in your hands, but they are not rare.

I think you are right. With a 0.030 over bore, 0.015 at the gouges probably won't clean them up. That block will probably need to be re-sleeved.

You should pass.

I think so.

LOL...ya...I have a couple.

RH

PM sent...

 

[BruceH]

You could put some silly putty or clay into the cylinder wall at the gouge area. Take it out and measure the gouge impressions.

Does a fingernail just catch it or can you feel it go down some?

 

[GerRod]

You could put some silly putty or clay into the cylinder wall at the gouge area. Take it out and measure the gouge impressions.

Does a fingernail just catch it or can you feel it go down some?

A fingernail will catch it. Here is another picture.

 

[eddieval5]

that looks fkd id pass on it.

 

[BruceH]

A fingernail will catch it. Here is another picture.

If a fingernail only catches a gouge or scratch it's usually right around .003" If it does more than just catch it's worse.

A machine shop would be your best bet for an accurate measurement.