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Author Topic: i require more advice from the master - cyl head  (Read 2316 times)

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Gaffers

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i require more advice from the master - cyl head
« on: 08 July 2011, 16:51:31 »
Iafyer starting work on the second head I noticed that there is some damage in the head face.  It's about a grain size but the location worries me. 

 

 

 
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Bionic

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Re: i require more advice from the master - cyl head
« Reply #1 on: 08 July 2011, 17:03:51 »
HM.  :o
That would worry me too and I would have something done about it as it will be definite weak spot even with a new gasket fitted.
Sorry the news could not be better though but I have no easy fix or solution to repair, or even attempt to repair it.
A really daft idea has just occurred and that would be to literally hammer a bit of lead into the hole and smooth it flat which would then support the new gasket. Worth a try if you are desperate and coin is a problem...... ;)
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Andy B

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Re: i require more advice from the master - cyl head
« Reply #2 on: 08 July 2011, 17:07:45 »
I suppose you could have it welded & then skimmed, but cost wise I'd go for A N Other head.
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tunnie

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Re: i require more advice from the master - cyl head
« Reply #3 on: 08 July 2011, 17:09:51 »
thats very deep and just appears to be in that area  :-/

Thats going to need a lot of skimming to get it smooth, new head?  :'(
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Re: i require more advice from the master - cyl head
« Reply #4 on: 08 July 2011, 17:12:41 »
That's just it, I got it off here :(
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Andy B

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Re: i require more advice from the master - cyl head
« Reply #5 on: 08 July 2011, 17:16:53 »
Quote
That's just it, I got it off here :(

Bugger!

Couldn't you return it .......... take some friends from work with you  ::)  ::)  ::)  ;D  ;D
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Re: i require more advice from the master - cyl head
« Reply #6 on: 08 July 2011, 17:17:28 »
Quote
That's just it, I got it off here :(

Ohh  :(
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Kevin Wood

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Re: i require more advice from the master - cyl head
« Reply #7 on: 08 July 2011, 17:25:35 »
Well, it's not actually under a fire ring - that area looks to be separating the water jacket and a coolant return channel so it may not be under much pressure and, if it did fail there again, leakage might not be much of an issue. :-/

Maybe you could get away with filling it with epoxy and sanding flat, or just add a little sealant in that area before bolting down the head.

Looking at that head the gasket had clearly failed in that area before, and the corrosion around the waterways makes me wonder if the coolant had ever been changed.

Kevin
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Re: i require more advice from the master - cyl head
« Reply #8 on: 08 July 2011, 17:30:13 »
Well I have both epoxy and sealant so which do you recommend?

That is the worst spot on the heads... The other one cleaned up nicely
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henryd

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Re: i require more advice from the master - cyl head
« Reply #9 on: 08 July 2011, 17:48:09 »
Quote
Well I have both epoxy and sealant so which do you recommend?

That is the worst spot on the heads... The other one cleaned up nicely

I would clean the rust out of the damage and fill the area with JB weld and leave overnight then file and finally sand until the area is smooth like the rest of the head,as Kevin says its not near the fire ring so not quite as crucial
« Last Edit: 08 July 2011, 17:49:19 by henryd123 »
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Re: i require more advice from the master - cyl head
« Reply #10 on: 08 July 2011, 18:40:19 »
JB weld is difficult to find in the UK.  Would super steel work as well?
« Last Edit: 08 July 2011, 18:46:33 by mrgaffney »
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Re: i require more advice from the master - cyl head
« Reply #11 on: 08 July 2011, 19:01:30 »
Quote
JB weld is difficult to find in the UK.  Would super steel work as well?

Hey mate try ebay - http://cgi.ebay.co.uk/J-B-Weld-Industrial-Strength-Adhesive-JB-Cold-Auto-Weld-/250846560732?pt=LH_DefaultDomain_3&hash=item3a679ec1dc  ;)
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Re: i require more advice from the master - cyl head
« Reply #12 on: 08 July 2011, 19:19:04 »
Quote
Quote
JB weld is difficult to find in the UK.  Would super steel work as well?

Hey mate try ebay - http://cgi.ebay.co.uk/J-B-Weld-Industrial-Strength-Adhesive-JB-Cold-Auto-Weld-/250846560732?pt=LH_DefaultDomain_3&hash=item3a679ec1dc  ;)

I need it now.  Project has to be done this weekend.
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Re: i require more advice from the master - cyl head
« Reply #13 on: 08 July 2011, 19:30:21 »
most motor spares stock jb weld.

edit

lecturer told me a story once that he "fixed" a cylinder wall with jb which had been grooved by the gudeon pin becoming free...!! ;D
« Last Edit: 08 July 2011, 19:34:17 by tapper888 »
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Re: i require more advice from the master - cyl head
« Reply #14 on: 08 July 2011, 20:28:52 »
My local Halfords stock JB Weld, seem to remember it wasnt in an obvious place though.
You must clean out the rust to clean alloy before filling....a Dremmel would be ideal.
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