damajin
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| posted on 5/10/10 at 09:05 PM |
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Removing a stubborn xflow head
After some advice guys...
Having checked the compression on my engine at the weekend and found it was down on piston 3, I thought it would make a great winter project to strip
the engine down and try and recondition it before next summer. The car is now SORN for the winter so I started dismantling things. Long story
short... I have drained the coolant, removed everything from the head, removed the bolts, but the thing just wont budge!
I have given it the customary "tap" with a nylon headed hammer (albeit a not particularly heavy one) and still nothing. The seal has been
broken as there is a trickle of coolant coming out when I tug on it, but it just won't lift off. I have also tried turning the engine over by
hand as the Haynes suggested the compression in the cylinders may break the seal, but this just resulted in more coolant leaking out (I guess whatever
was left in the pump) but nothing else.
Any suggestions??? As you may have guessed I'm new to this!
Cheers
D
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D Beddows
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| posted on 5/10/10 at 09:13 PM |
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a short length of 2" x 4" against the head and a big hit with a decent hammer - if water is seeping out you've gone to far to go
back now 
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MikeR
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| posted on 5/10/10 at 09:14 PM |
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fit the exhaust / inlet and give those a light tap with the mallet.
If it comes to it, refit the studs but leave each one not quite tight, then turn the starter motor. The compression you get them should free the head
- never tried this, just thought of it as i was writing the 'mallet' comment.
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l0rd
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| posted on 5/10/10 at 09:20 PM |
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have you tried twisting the engine?
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MikeR
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| posted on 5/10/10 at 10:03 PM |
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one thing - even though you've got the studs out the head still has some little locating studs that stop it moving side to side. You need to hit
/ lift it upwards.
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dilley
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| posted on 5/10/10 at 10:20 PM |
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double check to make sure all bots etc are out!
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Mark Allanson
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| posted on 5/10/10 at 10:32 PM |
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Refit manifolds, plugs and dizzy. turn the key and start - never fails. A ratchet strap around the engine stops the head embedding itself in the artex
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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damajin
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| posted on 6/10/10 at 07:40 AM |
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Thanks guys, I'll try using the starter motor tonight (assuming this rain lets off a little) and see if that shifts it. Failing that I'll
be back looking for new ideas
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steve m
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| posted on 6/10/10 at 08:35 AM |
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I would put money on some bolts left in, as i have never had a problem with a xflow
you have taken the rockershaft off ???
Steve
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damajin
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| posted on 6/10/10 at 09:41 AM |
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Yeah, rocker and both manifolds off and all 10 bolts removed. Just won't come loose.
I'll have another look before I do anything radical, but I'm sure I've got everything off. I can post some pics if necessary, but
I'm not sure that will help.
I agree though, it does feel like there's something holding it on! Maybe I've missed something obvious 
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bartonp
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| posted on 6/10/10 at 10:31 AM |
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Spark plugs in, rockers off (so all valves closed). Crank on starter.....
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damajin
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| posted on 6/10/10 at 05:59 PM |
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Head now off! As suggested, turning the engine over with the starter with the valves all closed and the plugs in did the trick. Thanks to all who gave
advice.
D
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