Ok, I found the website, it's dellortos.co.uk
anyway, what is the #63main , #32 idle you talked about? Also I read some jet tuning and they mention a "needle position" What is this? Do you know of any website that talks about jet tuning with pictures? It's hard to imagine what I am dealing with without pictures. Please advise
Thanks for your help
My email is kw_ap1@hotmail.com perhaps you can email me directly. Thank you
> Based on the speed you have gone so far, the restrictors
> have been removed. Check your exhaust for any kind of leak.
> One of the restrictors was a piece of tubing that was
> blocked off on one end that was connected to the exhaust
> pipe right where the exhaust pipe bends out from under the
> engine. It is removed by cutting it off and welding up the
> hole. There might be a leak there if it isn't welded
> properly.
> The jets are located inside the carb. If your bike is
> stock, the jetting should be correct. How does the engine
> idle? If you want to know what the inside of the carb looks
> like and where the jets are located, log on to
> www.dellorto.com and click on Motorcycle Carburetors. Look
> for the PHVA carb and click on that. There you will find
> the exploded view of the carb. The stock jets on the GP1
> are a #62 main, and #32 idle. For more info on jetting, do
> a Web search on motorcycle carb tuning. There are a lot of
> articles that detail the process. The only external carb
> adjustments are the idle speed, and air bleed
> screws.--vh286
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