17 replies to this topic

[Andy.T]

davieboy, on Oct 29 2009, 11:30 PM, said:

Bought an Amal mk2 carb for my Stormer,brand new from Burlen Fuel.£97 jetted to my spec ready to go.38mm.
Needed an inlet manifold which I got fron Fluff,carb sits at a different angle now so does not mate with the standard airbox.
I'm working on an airbox at the moment.
Haven't had time yet to test ride the bike but it started 3rd kick and revs out much cleaner than it did.Need to get it out and test some jet sizes once I fix up an airbox.
Just shows you the difference a new carb makes.
I'm thinking of a new Amal mk2 for my Sherpa now even though it runs well,I could maybe get it running better.

Glad you got your bike sorted, just thought I would mention even the fluff air box with the Mk2 Amal does not line up that good so you could probably make one easy enough that does. As I mentioned before mine was on the bike when I bought it. I did make a large volume air box for my TY175 with good results but that was made with fibreglass and I made a card board moulding to lay the fibreglass on. Good luck with playing around with the jets.

[davieboy]

Managed to get a half hour on the Stormer today.Runs well with the 38mm Amal mk2 on,jetting is close.
I had a 390 in and plug was a bit lean,going up to 400 for next time.
Starts much easier and pulls well.
Airbox is a bit heath/robinson though,used the standard filter and just blanked off the rear of the carb with a square of corugated plastic and the sidepanels block it in.A work in progress I think.

[majesty320]

Andy I used to ride twinshock MX back in the day. Everybody used Castrol R30 or R40 as it was one of only things that was any good at the time. I have never seen it used as gear oil on a 2 stroke, we all used it as pre mix oil at about 20:1, Castrol made gear oil for 2 strokes at the time call Castrolight,which was really light. So most people used that. Could be that the R40 is to thick for your gearbox as I remember it being quite gooey, but ahh the smell (takes me back).