cracked block suggestions

Reply Subscribe

Thread Tools

Search this Thread

Feb 6, 2012 | 11:00 PM

jay7199

Thread Starter

TECH Resident

iTrader: (9)

Joined: May 2009

Posts: 809

Likes: 0

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

TECH Senior Member

iTrader: (1)

Joined: Feb 2010

Posts: 6,761

Likes: 292

From: Fort Worth TX

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

Feb 6, 2012 | 11:10 PM

jay7199

Thread Starter

TECH Resident

iTrader: (9)

Joined: May 2009

Posts: 809

Likes: 0

From: Austin/Cedar Park

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

Teching In

Joined: Jan 2008

Posts: 21

Likes: 0

From: Austin, Texas

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

Teching In

Joined: Feb 2012

Posts: 48

Likes: 0

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

Feb 6, 2012 | 11:29 PM

jay7199

Thread Starter

TECH Resident

iTrader: (9)

Joined: May 2009

Posts: 809

Likes: 0

From: Austin/Cedar Park

my thought was weld it and helicoil it..

Feb 6, 2012 | 11:30 PM

Jonsgreasemonkey

Teching In

Joined: Jan 2008

Posts: 21

Likes: 0

From: Austin, Texas

deepest spot I found was 6.3MM

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

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Brett Foote

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Pouria Savadkouei

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Verdad Gallardo

7 Most Reliable High-Performance Engines GM Has Ever Built

Verdad Gallardo

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Verdad Gallardo

6 Common C5 Corvette Failures and What's Involved In Repairing Them

Pouria Savadkouei

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Verdad Gallardo

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Pouria Savadkouei

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Verdad Gallardo

Feb 6, 2012 | 11:42 PM

technicalninja

On The Tree

iTrader: (1)

Joined: Dec 2010

Posts: 133

Likes: 0

From: Ft. Worth

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

#10

Jonsgreasemonkey

Teching In

Joined: Jan 2008

Posts: 21

Likes: 0

From: Austin, Texas

It is in the head bolt hole.

Feb 6, 2012 | 11:50 PM

#11

JWStevens

TECH Apprentice

iTrader: (1)

Joined: Nov 2011

Posts: 317

Likes: 0

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

Teching In

Joined: Jan 2008

Posts: 21

Likes: 0

From: Austin, Texas

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.