hi bought a jog r for work and back just to find out it needs a top end ive ripped engine out and head and got to the barrel but now I cant remove it anyone know any tricks its proper stuck lol

rubber mallet and tap all round the sides and it should move.

you'll hear the difference as it lets go

Tryed this with no luck was in shed until 3 o clock this morning still no luck left over night with a little 2 stroke around the cylinder (thays all I had left lol) anythig else I can try thanks

heat will shift it and that little nudge from a mallet

Kk ill try it soon gonna av to do it weekend now tho lol as its at ma mates and he dont get back till friday night lol

Yer the best thing is to put oil in it and leave it to soak through over time might even take a few days to free it up then start knocking it with a mallet as Drew said, take care not to go mad and snapping the fins off the barrel, also heat up the barrel not the piston.

Look through the exhaust exit and push a screw driver up pushing the rings in so its easier for it to come out

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Im replacing barrel any way with a 70 kit so not to fussed about breaking fins lol will try not to tho as might be able to keep barrel as a spair lol

Still no joy with the barrel it looks like previous owner has neglected this bike can I just confirm that there is only 4 bolts holding this head on lol as its just not budging from the one corner took somr pics of the barrel and piston side tho and I can definatly say it 100% needed changing

Ok luke " the best penetrating fluid is ATF-acitone mix ,,, = nail varnish remover,&Auto transmission fluid. spray that in there

How would I get it down the stud as that seems all is holding it btw what do you think of the barrel and piston and should I clean it and how do I clean it tjanks

This mix will pull in. [ capillary ] spray it In [ mix up fliuid and fill an old window cleaner bottle ]

Oh thanks I wilk try it shoukd I leave to soak for a while or just keep spraying it on every now and then

Bikes currently like this lol

Spray and give it time,,, do that piston too, its manky ,,

Lol It is lol replacing full top end after seeing the piston it has very deep scratches all around it and the barrel has deep scratches im suprised it even run at all lol it was only doing 35mph so looking forwatd to seeing a deastic improvment lol

Also does my exhaust port look normal as it is half filled with metal and my other mopeds have had none of this ?

Compare it to the new 70 cc barrel , porting is a trick business