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Head off... but why the deposits

Posted: Wed Jun 06, 2007 6:41 pm
by badfelafel
Does anyone know what caused the deposits in the cylinder head? Theres also some powder on top the pistons in cyls 1+4...

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Cheers all!!

deposits

Posted: Wed Jun 06, 2007 6:49 pm
by Willie
to me no.4 (white) suggests running extremely weak. Are you sure that two and three weren't connected by a blown head gasket.

Posted: Wed Jun 06, 2007 8:38 pm
by badfelafel
lol i'm not sure of anything... although it was running really nicely (until it seized!)

Posted: Wed Jun 06, 2007 9:11 pm
by bmcecosse
Just fairly natural deposits of an engine that hasn't been de-coked for a while. #4 looks as if it might have been a bit oily - and 2 and 3 I guess have been stopped with valves open letting in moist air. Clean it up best you can - without scoring the head face. Wire brush in leccy drill should be good. and the flat end of a 12" steel rule (poundland) is handy too - as are a set of the little paint scrapers (also poundland) - use then for this and then throw away.

head

Posted: Thu Jun 07, 2007 9:34 am
by Willie
And change that concertina by pass hose for the straight type!

Posted: Thu Jun 07, 2007 10:08 am
by dunketh
Just an idea but would it be worth using a brass brush in a drill... instead of normal wire.
No chance of scratching anything then. :lol:

Posted: Thu Jun 07, 2007 10:12 am
by bmcecosse
If you can find one! Steel wire struggles to move it sometimes. The brush should be kept inside the chambers - and not used on the flat surfaces.

Posted: Thu Jun 07, 2007 1:15 pm
by badfelafel
here's the block

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Posted: Thu Jun 07, 2007 1:44 pm
by alex_holden
Is it definitely seized? Is there oil in the sump? What condition are the bores in? No. 1 looks a bit scored but that might be a trick of the light.

Posted: Thu Jun 07, 2007 3:25 pm
by bmcecosse
Is it just me ? - But I can't see any block!
I can now at home - no 'broadband' at work and so no pics!!

Posted: Thu Jun 07, 2007 3:47 pm
by chickenjohn
I can see the block but no dynamo.

Posted: Thu Jun 07, 2007 4:32 pm
by dunketh
Seems to be a lot of oil gunk between the two center cyclinders.

Is the head gasket dead?

If its seized have you tried 'rocking' it to free it up?

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Posted: Thu Jun 07, 2007 5:46 pm
by Willie
I still don't like the look between two and three,perhaps it was water getting in there. Was there an oily film in the radiator water or is there evidence of water in the sump? Have you checked which, if any, of the pistons can be moved from side to side in their present state.

Posted: Thu Jun 07, 2007 6:04 pm
by bmcecosse
Barry - pull that starter motor off - I thought you had it off ages ago - I still have a suspicion this whole problem may be caused by the starter !!

Posted: Thu Jun 07, 2007 6:20 pm
by picky
i have had a "seized engine" before that turned out to be jammed starter... easy to fix!

Posted: Thu Jun 07, 2007 6:52 pm
by badfelafel
Next step...

Whats under the tarp I wonder!

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Posted: Thu Jun 07, 2007 10:22 pm
by bmcecosse
That's my hope in this case - I thought it had been eliminated months ago!

Posted: Thu Jun 07, 2007 10:28 pm
by bigginger
Dead dog?