zilspeed
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 posted on 16/6/05 at 04:25 PM |
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Result
Got my cylinder head back today. Skimmed for a tenner.
20 thou off gives me just over 10:1 CR apparently which is nice. As an asides, since I had lost a valve collet I asked if he might have a spare - he
gave me two
While he was at it, he said "here, have this, it's no use to me - had it sitting here for years"
Another complete cylinder head including cams. So - no worries about spares, although I might be forced to give it some serious attention once the car
is up and running again.
So - lots of cleaning to do on all the parts, porting of the head and then it's reassembly time 
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zilspeed
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| posted on 16/6/05 at 04:26 PM |
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Oh - a pic would be good here I suppose 
 
Rescued attachment Heads.JPG
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subk2002
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| posted on 16/6/05 at 05:28 PM |
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Nice amp
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jollygreengiant
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| posted on 16/6/05 at 05:33 PM |
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When you put the top half of the cam box back on make sure you use a thin film of non setting sealer (but NOT hermatite red) between the head and the
top piece that hold the cams down. Otherwise its a piece of cake to re-assemble.
Enjoy.
Beware of the Goldfish in the tulip mines. The ONLY defence against them is smoking peanut butter sandwiches.
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zilspeed
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| posted on 16/6/05 at 05:37 PM |
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quote:
Originally posted by subk2002
Nice amp
Getitrightupye...
P.S. Roland VGA-3
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zilspeed
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| posted on 16/6/05 at 05:39 PM |
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quote:
Originally posted by jollygreengiant
When you put the top half of the cam box back on make sure you use a thin film of non setting sealer (but NOT hermatite red) between the head and the
top piece that hold the cams down. Otherwise its a piece of cake to re-assemble.
Enjoy.
I was thinking of sub contracting the insertion of the valve collets to a jeweller or watchmaker.
In all seriousness, having had it apart now, a lot of the mystique and fear has disspaeared. It's just an engine.
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Ferg
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| posted on 16/6/05 at 05:54 PM |
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John, did you have it hardness tested?
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zilspeed
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| posted on 16/6/05 at 06:01 PM |
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Oh good - a curved ball....
No - I didn't. If it is any indicator at all, there was no lip or step where the liners had sat. There was some micro pitting, but that's
been taken out with the skim. The old bloke who did it recognised it straight away as a K from the other side of the road - said he does them all the
time - reckoned it was really quite good actually. He also reckoned that the K gets a bad press - just don't expect over 100,000 miles without
changing the gasket. Guess what mine has just done, mileage wise...
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jollygreengiant
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| posted on 16/6/05 at 08:39 PM |
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quote:
Originally posted by zilspeed
Oh good - a curved ball....
No - I didn't. If it is any indicator at all, there was no lip or step where the liners had sat. There was some micro pitting, but that's
been taken out with the skim. The old bloke who did it recognised it straight away as a K from the other side of the road - said he does them all the
time - reckoned it was really quite good actually. He also reckoned that the K gets a bad press - just don't expect over 100,000 miles without
changing the gasket. Guess what mine has just done, mileage wise...
82000 (approx)
Beware of the Goldfish in the tulip mines. The ONLY defence against them is smoking peanut butter sandwiches.
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jollygreengiant
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| posted on 16/6/05 at 08:40 PM |
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oh and fit a new thermostat and waterpump to it.
Beware of the Goldfish in the tulip mines. The ONLY defence against them is smoking peanut butter sandwiches.
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Ferg
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| posted on 18/6/05 at 10:48 AM |
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A lot of new generation Alloy heads anneal if they overheat, apparently. If there isn't any indent from the fire ring you may well be OK. I
would DEFINATELY fit a remote stat to the K3, John. I paid £100 from QED, but I know Rich and others fitted a BMW one from the breakers for much, much
less.
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zilspeed
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| posted on 18/6/05 at 11:03 AM |
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Ferg
Having now become intimate with K series cooling theory, I agree entirely with the remote stat. Plumbed in at the front where the flow and return to
the radiator pass by one another.
BTW, my head and my new spare head are both early versions (low port), so I don't know if that influences the mettalurgy in any way.
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britishtrident
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| posted on 18/6/05 at 12:34 PM |
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On the K16 the camshafts run directly in the head material this gives away which aluminium alloy is used LM29 a hyper-eutectic alloy with 25%
Silicone and 1 % each of Cu, Mg and Ni --- exactly the same stuff the Hillman Imp engine was made from. It was also the alloy the famous Reynolds
linerless Chevy engines were made from in the back of the Group 7 CamAm Maclarens back at the end of the 1960s.
Taking over head gasket problems with fellow Imp nuts a few years back we arrived at the conclusion the real problem is that with light alloys
stressed for long periods at warm or hot tempertures is low temperature creep in the head the block and the gasket leading to stress redistribution.
Although the head bolts could still be tight the clamping pressure in the ring around the bores would reduce over a long period time.
[Edited on 18/6/05 by britishtrident]
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