cracked block suggestions

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Feb 6, 2012 | 11:00 PM

jay7199

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From: Austin/Cedar Park

cracked block suggestions

this is my buddys block, its a 99 or a 2000 ls1, he sent it too the machine shop for a vats cleaning and cam bearings and after the cleaning found this..

What do?

Feb 6, 2012 | 11:03 PM

sjsingle1

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From: Fort Worth TX

surface crack? or much deeper? if its surface i would say no problem

Feb 6, 2012 | 11:10 PM

jay7199

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not 100% sure but it looks like a stress crack from not cleaning the headbolt holes before installing new heads (previous owner)

Feb 6, 2012 | 11:19 PM

Jonsgreasemonkey

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It's pretty deep. the two sides of the crack are different heights, 3/4 of a millimeter. I can see quite a ways into it, but light doesn't pass into the bolt hole or vice-versa. I'm trying to take some better pictures.

Thanks Jay.

Feb 6, 2012 | 11:23 PM

Mako77

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looks like scrap to me... Might be able to so that metal stitch technique.

Feb 6, 2012 | 11:29 PM

jay7199

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my thought was weld it and helicoil it..

Feb 6, 2012 | 11:30 PM

Jonsgreasemonkey

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deepest spot I found was 6.3MM

Last edited by Jonsgreasemonkey; Feb 6, 2012 at 11:36 PM.

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Feb 6, 2012 | 11:42 PM

technicalninja

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That looks like a head bolt hole. It's toast. I'd chuck it.

There was someone looking for a bad aluminum block in the classifieds to make a table out of...
You might look him up.

That's only good for furniture now!

I'd find another machine shop unless they replace the cam bearings.

I might find another machine shop anyways...

Feb 6, 2012 | 11:47 PM

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Jonsgreasemonkey

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From: Austin, Texas

It is in the head bolt hole.

Feb 6, 2012 | 11:50 PM

#11

JWStevens

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It can be fixed but if you pay someone to do it the cost may not be worth it? We always use Fowler or Brodix to fix our crap.

Feb 6, 2012 | 11:59 PM

#12

Jonsgreasemonkey

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I think I'm just going to use the 5.3 I have laying around. The ls1 was gonna go into a daily driver. I just need a running car since the cam in my 3.4 bit the dust. Any motor is going to be better than the 94hp that 3.4 put out.