vm28ss

[8 Valve Mark]

i recently bought some pumper carbs which came with no air screws or springs!!!. does anyone know how long they should be?? (screws +springs) probably the same as non-pump vm28 but I'd like to be sure before ending up with wrong ones. cheers in advance.. m

[warren3200gt]

give the guys at Allens performance a ring to be sure. They will also have the parts you need.
http://www.allensperformance.co.uk/shop/

[8 Valve Mark]

thanks Warren, I'll check the link, i have possibly sourced some already, but the seller has various lengths. I'm aiming to test run the carbs then possibly fit keyster kits if required. cheers m

[Ultim8pc]

Mark,
I've got a set of 28mm pumpers from a 1000. I can check them and let you know if you'd like?

[8 Valve Mark]

yes please nigel the top of the thread to the tip and the spring length would be much appreciated. thank you very large!! mark

[Ultim8pc]

The ones fitted seem to be quite a way down the passage way so I'm wondering of not original or correct. However, they came off a running bike which had just been setup on the dyno...
24mm Total length
19mm tip to bottom of thread

I forget to measure thew spring length, but will do.

Hope this helps

[8 Valve Mark]

that's great nigel, super rapid too..i hope you counted the turns on yours? cheers matey. m

[Ultim8pc]

that's great nigel, super rapid too..i hope you counted the turns on yours? cheers matey. m

No worries, I'll need top remember to measure the spring length too..

[8 Valve Mark]

no rush mate,re springs; just whenever, if you can be bothered, screws are hopefully not an issue now thanks to your help.. cheers mark.