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Author Topic: Head gasket 3.2 v6  (Read 3438 times)

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Migv6

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Re: Head gasket 3.2 v6
« Reply #45 on: 24 June 2018, 20:35:38 »

Something has obviously gone catastrophically wrong in that engine. Any diagnosis on what the cause was yet ?
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BazaJT

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Re: Head gasket 3.2 v6
« Reply #46 on: 24 June 2018, 20:57:30 »

Ace photos and a detailed write up of the processes will I'm sure be a great help to others in future.I too am fascinated to know what went so very wrong as to cause this[it's like back in the Saturday matinee where the "hero" was left hanging over a cliff or something and you had to go back next week to find out if/how he escaped :)] while it's good therapy for you don't go overdoing things and take care of yourself :y
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Bigron

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Re: Head gasket 3.2 v6
« Reply #47 on: 24 June 2018, 21:21:28 »

If Haynes ever want somone to write a PROPER manual, James..... :y 8)

Ron.

P.S. Excellent photos, too.
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LC0112G

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Re: Head gasket 3.2 v6
« Reply #48 on: 24 June 2018, 21:44:24 »

I do like a thread with some mucky photos.

More to the point, I could understand a CHG letting go and water ending up in 1 or 3 or 5, or 2 or 4 or 6, but in all 6 on both sides of the V? For the CHG to be the culprit that means all 6 fire rings must fail which is a vanishingly unlikely scenario.

None of the pistons have been "steam cleaned" so water hasn't been getting into the bores for very long and then got suddenly worse. One warped hear would be careless - two ?
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Andy H

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Re: Head gasket 3.2 v6
« Reply #49 on: 24 June 2018, 22:47:14 »

I do like a thread with some mucky photos.

More to the point, I could understand a CHG letting go and water ending up in 1 or 3 or 5, or 2 or 4 or 6, but in all 6 on both sides of the V? For the CHG to be the culprit that means all 6 fire rings must fail which is a vanishingly unlikely scenario.

None of the pistons have been "steam cleaned" so water hasn't been getting into the bores for very long and then got suddenly worse. One warped hear would be careless - two ?
I have been puzzled by that one :-\ Presumably both cylinder heads would have been subjected to the same temperature though so no surprise that both should behave the same.......

Does the 54 degree V6 use cylinder liners? IF it does it possible for the engine to got so hot that all 6 liners can drop? :-\
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Re: Head gasket 3.2 v6
« Reply #50 on: 24 June 2018, 23:46:33 »

I do like a thread with some mucky photos.

More to the point, I could understand a CHG letting go and water ending up in 1 or 3 or 5, or 2 or 4 or 6, but in all 6 on both sides of the V? For the CHG to be the culprit that means all 6 fire rings must fail which is a vanishingly unlikely scenario.

None of the pistons have been "steam cleaned" so water hasn't been getting into the bores for very long and then got suddenly worse. One warped hear would be careless - two ?
Can only presume that that car has been abused to death for it's entire life...  :-\
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Raeturbo

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Re: Head gasket 3.2 v6
« Reply #51 on: 25 June 2018, 00:04:57 »

Could have been, Iíve owned it for a few months and in that time  Iíve spent loads on it, between the time itís been worked on and the time itís been used I bet I havenít even covered 500 miles in her yet!
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Kevin Wood

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Re: Head gasket 3.2 v6
« Reply #52 on: 25 June 2018, 07:27:39 »

I'm wondering if most of that water ran out of the heads when they were removed.

I can't see an engine making half decent compression on a tester, and running at all, yet having head gaskets that let water dribble into all 6 cylinders. Fire rings look intact too, or at least not obviously knackered, from this distance.

I'd say the main failure has been between the water jacket and an oilway, looking at the mayo buildup. As we know, that's not a likely head gasket failure on these engines, so I'd be checking the heads over very carefully.

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JamesV6CDX

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Re: Head gasket 3.2 v6
« Reply #53 on: 25 June 2018, 08:26:42 »

I'm wondering if most of that water ran out of the heads when they were removed.

I can't see an engine making half decent compression on a tester, and running at all, yet having head gaskets that let water dribble into all 6 cylinders. Fire rings look intact too, or at least not obviously knackered, from this distance.

I'd say the main failure has been between the water jacket and an oilway, looking at the mayo buildup. As we know, that's not a likely head gasket failure on these engines, so I'd be checking the heads over very carefully.

The thing is though, I could see water in almost all of the cylinders through the plug holes before loosening the head bolts. And it was spraying water from all of the plug holes during compression test  :-\

I want to change the 246 head anyway for one that accepts a coil pack. I think the solution here is two known good used heads, given how reliable they usually are, rather than try to salvage two cooked ones.

I donít think the head gaskets have failed at all. They are multi layer steel.
I think the alloy heads have warped when it overheated causing the issues
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Kevin Wood

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Re: Head gasket 3.2 v6
« Reply #54 on: 25 June 2018, 09:21:48 »

Yes, or the heads have cracked, likely into the valve ports so it doesn't affect running too badly.

Either way, a pair of decent heads is the best solution, given that one's already been bodged.
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Nick W

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Re: Head gasket 3.2 v6
« Reply #55 on: 25 June 2018, 09:46:02 »

I would check the block faces very carefully before spending any money.
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Andy B

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Re: Head gasket 3.2 v6
« Reply #56 on: 25 June 2018, 09:48:29 »

.....

None of the pistons have been "steam cleaned" so ....

I used to have a picture of No 6 piston of my Senator when its head gasket let go ..... it looked like brand new  :y
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JamesV6CDX

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Re: Head gasket 3.2 v6
« Reply #57 on: 25 June 2018, 09:51:32 »

I would check the block faces very carefully before spending any money.

Indeed, straight edge and feelers?
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henryd

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Re: Head gasket 3.2 v6
« Reply #58 on: 25 June 2018, 10:27:43 »

I would check the block faces very carefully before spending any money.

Indeed, straight edge and feelers?

Straight edge and a good light source behind will do as well :y
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Migv6

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Re: Head gasket 3.2 v6
« Reply #59 on: 25 June 2018, 12:35:16 »

So, it wasn't head gasket failure. We still await the first case to appear.
Choice of changing the heads or the hole engine I suppose. Depends if block and bottom end are in decent condition.
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