Mk1 GT6 Carb parts

[Dan16v]

Evening all,

im in the process of trying to get the Gt6 to run a bit better as it doesn't like to rev much beyond 3k when under load, one of the carb floats doesnt return with a proper clonk and re-centering the jet doesnt seem to help either.  Since I dont know the history of the carbs I thought new needles and o-rings with the washers replaced in the jet assembly would be a wise move to make sure everything works properly. The distributor has been rebuilt to eliminate that as it was quite worn out.

The needles seem to be on most of the major parts sites, but getting a bit confused with the other bits. Do I need separate o-rings and washers or is the CARBURETTOR NEEDLE VALVE assembly the thing I need to get?  I can only see float chamber o-rings on the paddocks site

http://www.jamespaddock.co.uk/parts.aspx?categoryID=9&vehicleId=4

Also I have heard that the o-rings from some of the traditional parts suppliers dont fit very well and its best to go to carb rebuild specialist (who dont seem to want to reply at the moment)

Any help would be much appreaicted

[Pete Lewis]

if you mean the main air piston is sticking, stiff to drop then apart from centalising the jet you may have some damage to the slide
this may need a clean up with some flour paper ,
the float needle controls the level of fuel only its not what you can see without removing the float chamber 6 screws

some aftermarket diaphragms are too thick and you get a poor return , they should be quite flimsy.

burlen fuel  sytems gives abreakdown of parts if you enter your make model and scroll the parts listed.
http://zenithcarb.co.uk/carbspec/carburettor/spares/id/4048/



buckeye triumphs have a brilliant tutorial, not for cd150 but the priciples they explain in clear pictures
http://www.buckeyetriumphs.org/technical/Carbs/CarbsI/CarbsI.htm