anyone ever crack an iron block cylinder wall?

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09-30-2007, 09:37 PM

parish8

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anyone ever crack an iron block cylinder wall?

didn't know you could do this. my truck has been kicking my *** for awhile so i am glad to have found the problem. time for an lsx block

pic's>>http://www.neufamily.org/images/6.0crack/

look how short those pistons are. crazy. kinds of explains why it is a little rattley

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09-30-2007, 10:16 PM

daniel6718

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from your truck?

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09-30-2007, 10:26 PM

ozws6

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Ouch!

A friend cracked the cylinder wall of the block (top to bottom) on the #7 cylinder in his 99 Lingenfetler Silverado (supercharged iron 5.3).

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09-30-2007, 10:29 PM

lsxdream

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What is your bore & stoke? I wanted 2 go 4.100 on a iron block or l92 w/4inch and about 15 to 20 psi. Are you running big enough coolers, wat/meth injection?

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09-30-2007, 10:33 PM

parish8

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just a 408. 4.030x4.00 i think?

intercoolers are good sized. meth up to 14psi, race fuel after that.

i dont think you can go 4.100 on an iron 6.0 block. from what i understand 4.060 is borderline sometimes.

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10-01-2007, 03:11 AM

SuperZ

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You can go 4.100 stroke but 4.060 is about all the bore you could get safely.Thats prolly the first time ive herd of a 6.0 iron block cracking

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10-01-2007, 05:10 AM

njc.corp

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Quote:

Originally Posted by parish8

4.100 is a no man's land-

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10-01-2007, 07:12 AM

smokinHawk

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steves old formula had a crack in its old iron block on one of the water jackets or something like that, they kept on running it anyways.

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10-01-2007, 07:50 AM

njc.corp

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Quote:

Originally Posted by smokinHawk

steves old formula had a crack in its old iron block on one of the water jackets or something like that, they kept on running it anyways.

how long did they get away with that for?

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10-01-2007, 10:00 AM

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smokinHawk

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a whole season or more.

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10-01-2007, 10:38 AM

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daniel6718

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Quote:

Originally Posted by smokinHawk

a whole season or more.

lol now thats some nutz

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10-01-2007, 10:50 AM

#12

hellbents10

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Ah, its just another form of water injection..hahahahahahaha!!!

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10-02-2007, 05:17 AM

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tirefryin_s10

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so if the truck is sold what did you have planned for the 408?

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10-02-2007, 05:59 AM

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parish8

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the truck can't make a run so no, it isn't sold. can't sell a truck that wont run. get it running and i think it is sold.

i can't make any runs. i think it just puts a big air pocket into the cooling system after a hard pull and then overheats. i can put around just fine but thats it.

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10-02-2007, 10:37 AM

#15

Turbo LS1 SS

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are those diamond IBF's? i just ordered some. please dont tell me you didn't like them

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10-02-2007, 11:17 AM

#16

ZR1 DREAMING

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Jim, you plan on building an LSX block just to get it running again and sell it?

I haven't seen any other iron blocks cracked yet, that's crazy.

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10-02-2007, 11:54 AM

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Cracking the block is common in long duration/high power engines without filled cylinders. Steve's block cracked across the deck, not down the cylinder. He did run it another year!!

Kurt