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B series Engine Head Gasket
Posted: Sun Apr 01, 2007 10:37 pm
by rio678
Hi everyone
My cylinder head gasket looks like it is on it's last legs! Now how difficult is it to change one of these on the B series Engines? (1622cc)
Is there any Guides ? and things i should make sure etc...
Hope someone can help
Posted: Mon Apr 02, 2007 10:14 am
by bmcecosse
Is this in a Morris Minor ?
It's easy enough to do - but why do you think it is on it's last legs ?
Remove rocker cover, drain water and disconnect top hose, remove manifolds etc , loosen rocker gear nuts, loosen cylinder head nuts, remove rocker gear and push rods (keep the sequence), remove head nuts and lift off the head !!
You've got one hour - starting NOW!
Posted: Mon Apr 02, 2007 4:15 pm
by plastic_orange
It's as easy as a minor - easier in fact as there is no by pass hose to bother about. However, it is slightly heavier.
Pete
Posted: Tue Apr 03, 2007 1:43 pm
by rio678
Yep , customised moggie
Well there is oil floating about in the water and there seems to be a bit of pressure in there too.
When i got it there was alot of Gunk all around the rocker etc, but i thought at the time it was down to not been used alot. (old lady owned it)
Posted: Tue Apr 03, 2007 7:16 pm
by rio678
Okay, cylinder head is off! Had a fight with the thermostat housing which would not come off at all
had to buy a new one and cut saw it in two!
Anyways, getting to preparation stages and what can i use to clean the head up with? what is safe and best to use?
for the faces i am using wet and dry.
Posted: Tue Apr 03, 2007 8:12 pm
by bmcecosse
Careful!! You must keep it flat - wet/dry will allow you to rub little dips in the head surface. I use a simple scraper (set in Poundland) and if need be careful run a new flat fine file over the head - holding it absolutely flat down to the face. For the chambers and valve throats etc - wire brush in leccy drill (safety specs) - and to clean up the valves put them in leccy drill and hold old file then wet/dry against the spinning valve (gloves!). Some 'old lady' - with a 1622 Minor!!
Posted: Tue Apr 03, 2007 10:19 pm
by plastic_orange
Alternatively, get the head and valves bead blasted.
Pete
Posted: Wed Apr 04, 2007 12:39 am
by rio678
Well, cleaned her up both faces, put back together and quickly started. She did and ran much better(horrah!)
Going to have to drill out and coil a new thread for the thermostat housing (old one had sheared off)
Posted: Wed Apr 04, 2007 7:44 am
by bmcecosse
Aye - that's a common problem. Best to run drill through the stat housing bolt holes to 'ease' them slightly - and cover the bolts/studs with copper type grease (or even standard grease) when fitting the cover.