GT6M

If the heads still on, and not took any thing off yet but are thinking it maybe tuff togit off, then try thee,s first. drain water, slacken all nuts off cylinder head, If any studs come oot, all the better, can get a ring under the rockers if shaved doon a bit then run emgine,, blipping throttle to increas CR pressure . this should work head loose if an when its cracked off, but still tight at one end, then bung some rope in the cylinder furtest away frae the loose end, thru SP hole, and turn engine wid bigg spanner this will lift the head up. Note, if any studs are left in, then it can be awkward for the heed to come off. Also, when re fitting, its a good idea to slot all the studs, so they can be screwed in/oot same too for all the manifold studs, meks putting them in /oot so much easier M

A few of my olde banger

If they are a Mr M Speed rods, then ye will most likely have to cut away the bottoms of the cylinder aboot an 1/8th, in 2 spots. this where the side of the rods are highest., so they fit into the slots cut into cylinder. this cos the rods catch on the side, EVEN though there cut oot there as standard. see this, page 4, reet at top http://www.triumph.org.uk/cgi-bin/forum10/Blah.pl?m-1430424675/s-45/ M