Water leaking from new Valve Guide???

  • curtiss
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07 Jun 2018 03:37 #34733 by curtiss
Water leaking from new Valve Guide??? was created by curtiss
This block might just be doomed.

I manged to get the cracks in the water jacket sealed up then when I leaned the block over and put some water in the block now after about 15 mins I started to see a small amount of water coming from one of the newly installed valve guides at the other end of the block away from any of the work we were doing. What typically causes this and is there a fix for this?

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03 Jan 2019 01:36 #36335 by Omar1447
Replied by Omar1447 on topic Water leaking from new Valve Guide???
Cast iron repair Lock Stitch Turlock California just ask Jay Leno. I have taken the tour in the unlikely place of Turlock best people you will ever meet. Huge Company .Fantastic service.

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  • mikespeed35
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03 Jan 2019 03:55 #36337 by mikespeed35
Replied by mikespeed35 on topic Water leaking from new Valve Guide???
These blocks are known to crack at valve guides. Did anyone mag. before work was done? Did you put hardened seats in? These blocks are very thin in the valve seat area and when hardened seats are installed you risk breaking through to the water jacket.
CORDiallyMike

Mike Huffman

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  • Terry Cockerell
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04 Jan 2019 20:40 #36339 by Terry Cockerell
Replied by Terry Cockerell on topic Water leaking from new Valve Guide???
Mike before the engine reconditioning work was done on my 810 Cord block I asked the guy who runs the shop about fitting hardened valve seats. His reply was that "Hardened valve seats would not be required as the engine is fairly low compression and consequently would not get hot enough."
What are your thoughts on this statement and current knowledge in the US?
Thanks,
Terry

T cockerell

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05 Jan 2019 05:23 #36353 by mikespeed35
Replied by mikespeed35 on topic Water leaking from new Valve Guide???
Hardened valve seats were in response of the elimination of lead in the fuel, not how hot the engines gets. My understanding is the 810-12's get plenty hot. If people can put hardened seats in safely I think most people do, although I don't know if it is necessary. I have put 55K miles on my Auburn with out hardened seats but with SS valves with no problem.
CORDiallyMike

Mike Huffman

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05 Jan 2019 19:10 - 05 Jan 2019 19:11 #36362 by johnmereness
Replied by johnmereness on topic Water leaking from new Valve Guide???
My guess is someone damaged the block when installing new valve guides.
I never heard too much about 31 or 32 blocks and then all of a sudden seemed to be the topic at Auburn this year.
Sidenote: I agree with Mike - a standard seat with a hardened valve works fine, though I have been driving plenty of stuff with standard non-hardened seats and standard non-hardened or SS valves as well.

JMM
Last edit: 05 Jan 2019 19:11 by johnmereness.

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