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block repair

 
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seventy468
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Joined: 13 Oct 2008
Posts: 92
Location: Indiana
2674.60 points



PostPosted: Mon Jul 11, 2011 12:33 pm    Post subject: block repair Reply with quote

Ive mentioned cast iron repair before, and I know 1. its risky and 2. its not easy.

My latest issue.

Recently purchased gen 6, 4.5 bore block, 4 bolt main, half filled with hardblock that needed some repair. After machine shop was done machining the block had a total of 4 sleeves, and was a final bore of 4.56. They installed cam bearings and basically race prepped it for me. They conveniently noticed as we were loading it into my truck there was a hairline crack that travels from somewhere in the rear main journal to up on the inside of the block (on top of the rear main journal when the engine is sitting upright) My question, has anyone had experience with such a crack and/or repairs. I understand I am in the middle of throwing it away, or throwing more money at it. There is no immediate rush on this engine so I have some time to think about it.

Your thoughts opinions are greatly appreciated.
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squeeezer
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Joined: 02 Mar 2007
Posts: 2419
Location: new richmond WI
191305.80 points


1991 Chevrolet Camaro

PostPosted: Tue Jul 12, 2011 12:47 pm    Post subject: Reply with quote

sounds like junk to me

and they shoulda magged the block first!!!!!

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seventy468
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Joined: 13 Oct 2008
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Location: Indiana
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PostPosted: Tue Jul 12, 2011 1:49 pm    Post subject: Reply with quote

squeeezer wrote:
and they shoulda magged the block first!!!!!


You're tellin me!
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Big Dave
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Joined: 04 Dec 2005
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Location: Tampa Florida
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PostPosted: Tue Jul 12, 2011 7:57 pm    Post subject: Reply with quote

Sounds like a e-Bay special to me. Call now for low, low price and make it all up in shipping costs.

I have bought a few of those in the past and they were scrap metal once I found a crack. Only good thing you can say is the Gen VI is a high content nickel block so the nickel rods that they use to weld it up will stick better than it would with regular cast iron. But you have to remachine everything all over again after the block is fixed because it has been annealed in the welding process that moves crank center lines and other dimensions around a bit.

Big Dave
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af2
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Joined: 01 Sep 2003
Posts: 5409
Location: grassvalley, ca
66801.58 points


1933 Willys Coupe

PostPosted: Tue Jul 12, 2011 8:07 pm    Post subject: Reply with quote

seventy468 wrote:
squeeezer wrote:
and they shoulda magged the block first!!!!!


You're tellin me!


When it came out of the washer they without a doubt should have seen the tell tail line without a mag. Being an inside crack is pretty easy to see the residual oil after the tank job.

I am so glad the machine shop I use has good old fashion eyes!!!


You have way too much $$ invested and THIS should have been the first thing to notice!!

I couldn't see running the thing. Other people do but not me.
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Blown65
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Joined: 26 Feb 2003
Posts: 152
Location: Edmonton,Alberta Canada
3519.10 points


1965 Chevrolet Malibu

PostPosted: Tue Jul 12, 2011 8:15 pm    Post subject: Block repair Reply with quote

http://www.locknstitch.com/

I was going to use these to repair my block, had crack in the main and went through the oil gallery. My machine shop was going to charge me $1000.00 to do it but that was with all the machineing done as well.

My machinist said it should be fine just keep an eye on it.

Corey

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Corey
CoMax Racing
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squeeezer
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Joined: 02 Mar 2007
Posts: 2419
Location: new richmond WI
191305.80 points


1991 Chevrolet Camaro

PostPosted: Thu Jul 14, 2011 5:19 pm    Post subject: Reply with quote

fuk that an oil leak youkeep an eye on
your tune you keep an eye on

a block better be perfect
like a house ......without a foundation you aint got shit!!!!!

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