Cylinder head removal -DR350?

[BBadger]

Its for my trustworthy Dr350.
During the strip down ive come acropper with the head.

Its stuck fast to the barrel and it wont budge, tried rubber mallet and careful bit of leverage but nout.
Can move the barrel but dont think i can get the whole lot out in one go whilst its still in the frame.
Hints tips or just keep trying to nudge it until it gives way?

Thanks
Brock.

[andrewsmith]

Get it out the frame.

It'll be easier in the long run

[BBadger]

mmmm but ive done so well so far, its just the 15 year old gasket has turned into superglue.

[flymo]

spray some penetrating fluid in there and leave it a while. Then perhaps some careful effort with a sharp flat bladed screwdriver or scraper.

[andrewsmith]

**** it a bit harder.

Use a nylon mallet if you need to go harder

[Owenski]

suck it up and just give it one sharp smack, if that doesnt break the gasket then check everything through a million more times because no way should it be bonded like that unless someone did actually use a big ass tube of superglue lol.

[BBadger]

15 years old though so you never know.
Its been sitting in plus gas for about an hour now so will crack out the heat gun see if i can scrape off any more of the protruding gasket and keep at it with rubber or nylon hammer.
Least the pics should be interesting once i get it off as i feel its got more carbon build up than when the mother does the bbq.

[unclepoo]

If all the head bolts are out, could you try running the engine, and leave it running....the heat and compression might do the trick.

[yorkie_chris]

Interesting idea!

Probably not good for the camchain though if/when it does lift

[Owenski]

If all the head bolts are out, could you try running the engine, and leave it running....the heat and compression might do the trick.

Whaaaaat?
the moment the bond breaks you'll wreck the lot

[flymo]

please, if you are daft enough to give it a try, get it on video for us to watch :-)

[BBadger]

the engine isnt going to be started it would take hours to get it back together anyways.

Also got the head and barrel out as one yest and found 1 last bolt that was in a recess, needless to say the recess was hidden by a large amount of solid mud and grit and took about 10 mins of chipping away to get it all out.
Soaking in plug gas but the bugger still wont move and i dont really want to take the stud out so will see what i can do but it should come apart nicely after that.
Thanks all for the help even is it is my own incompetence

[flymo]

it could also be stuck on dowels between the two faces. patience will get it apart.

[BBadger]

mmm heat and soaking should see it right but the bolt is made of rust and i can just feel it starting to go....not sure of the best option....it will be getting replace as most of these small crappy bolts but break it? keep at it? just take the stud out ( if it will even move)... not sure of the best path to go down.

[flymo]

you tried pushing apart hydraulically? Building on the "run it until it pops open" approach, you could rig up something that builds hydraulic pressure in the cylinder. perhaps through the spark plug hole?

[Owenski]

You got any pics brock because Im sort of lost now as to where you're at.

[BBadger]

i gave in and gave it to someone with the proper tools and vices that i dont have in my garage. owell.
Either way the bore look alrighttttt bit of scoring and the odd nasty patch but check my build thread for some pics going up in the next few mins.

ill explain when i get it back either sat or monday, but i just couldnt do it...they had welded themselves to the head and wernt going to budge and were starting to round so i though give in before i really fuK it up!