ET: Engine (Twin) Separating Head and Barrel

[eharris]

Hello all,

I decided to have a go at taking the the heads off my rapide. I started on the rear head and having undone everything, that barrel came away with the head too!

The pair are now sat on my bench, but refusing to separate! I have soaked some penetrating oil in to the joint and left it for for the moment.

Any hints on how to get them apart gratefully received!

Cheers,

Ed.

 

[oexing]

A decent piece of wood dropped into the cylinder for whacking the head off ??

Vic

 

[passenger0_0]

This shouldn't happen so maybe it has previously been glued together with some form of sealant. Heating might soften the bond, and Vic's suggestion is sound too.

 

[eharris]

“This shouldn’t happen…”

I enjoy being different!

But more seriously, the previous owner clearly has shares in whoever made red heamatite, so I do suspect that is the glue holding them together.

I shall try Vic’s suggestion, but expect to read shortly that I managed to shoot the head through the window!

Cheers,

Ed.

 

[chankly bore]

If you suffer from Red Hematite you'll need to thoroughly clean out every thread in the crankcases for starters, mate.

 

[greg brillus]

Yep, I've had barrels bonded on to the head with half a tube of 518 Loctite........used all the above methods but non worked........Ended up using some heat, then drove a very sharp wood chisel into the joint, and away the 2 separated finally........took some cleaning up as the sealer had gone like rock........It sounds like butchery, but it did basically nill harm.........Good luck with it.

 

[brian gains]

what's so hard about lapping a gas tight seal. or is it FUBAR necessitating sealer ?
or, is sealer used in the same manner as tucking your shirt into your underpants, not really necessary but in the event of a clothing failure it offers an additional safety margin.

 

[vibrac]

I cannot understand what is difficult in getting a good seal by ensuring the correct assembly why would anyone stick goo in there? or even god for-fend a copper gasket! I must say I have stripped more heads from barrels than I care to think and I have never found such a bodge.
incidentally shirt inside pants is a given I cant stand a cold back when riding

 

[Peter Holmes]

what's so hard about lapping a gas tight seal. or is it FUBAR necessitating sealer ?
or, is sealer used in the same manner as tucking your shirt into your underpants, not really necessary but in the event of a clothing failure it offers an additional safety margin.

Thank goodness for online urban dictionaries!

 

[eharris]

Thank goodness for online urban dictionaries!

See also: SNAFU, which probably describes the work I do on the bike!