Search found 1681 matches

by Adam_Winstone
Fri Jun 12, 2020 10:34 pm
Forum: Lambretta Tech
Topic: Effect of humidity and air temperature on carb performance
Replies: 55
Views: 11919

Re: Effect of humidity and air temperature on carb performance

Been there with a number of carbs and is why I like to get somewhere near, then take it to Readspeed, saving me in the long run.
by Adam_Winstone
Wed Jun 10, 2020 10:12 am
Forum: Lambretta Tech
Topic: Effect of humidity and air temperature on carb performance
Replies: 55
Views: 11919

Re: Effect of humidity and air temperature on carb performance

I believe your taper is the reason why you run a higher main jet that most other folks_____your GJH is the same as the "standard" JJH in terms of diameter and length, but you have a leaner taper. As the taper kicks in just before you go onto main, the bigger main is compensating for the leaner tape...
by Adam_Winstone
Thu May 28, 2020 4:16 pm
Forum: Lambretta Tech
Topic: Suzuki 190
Replies: 18
Views: 2419

Re: Suzuki 190

^... LOL.

Sad but true :(
by Adam_Winstone
Thu May 28, 2020 2:50 pm
Forum: Lambretta Tech
Topic: Suzuki 190
Replies: 18
Views: 2419

Re: Suzuki 190

Had a couple of 190 conversions,one with a 150 barrel bored out,and one with a Tv175 barrel,both went very well,but the Tv barrel had the edge. What do you think is a realistic maximum bore for the small block cylinders? The reason that I ask is that as the result of a cock-up, I received a couple ...
by Adam_Winstone
Sat May 16, 2020 4:24 pm
Forum: Show us yer Scoots!!
Topic: My latest barn(ish) finds
Replies: 13
Views: 4453

Re: My latest barn(ish) finds

Beaut!!!
by Adam_Winstone
Thu May 14, 2020 6:09 pm
Forum: Lambretta Tech
Topic: casa 265 ST
Replies: 30
Views: 3414

Re: casa 265 ST

^... I had a similar issue with various stator and flywheel combos before the Spanish Euro. Lots of faultless running in until I started to test my freshly built spare stator, which gave me siezure issues. Nothing else had changed so I strobed it again and found it was advancing at higher revs. Play...
by Adam_Winstone
Tue May 05, 2020 12:56 pm
Forum: Lambretta Tech
Topic: 34mm Polini Carb... Jetting?
Replies: 4
Views: 800

Re: 34mm Polini Carb... Jetting?

^... Yes, this was a very common issue with some copies but I hope that it will not come to light on this Polini version, time will tell.
by Adam_Winstone
Sat May 02, 2020 5:48 pm
Forum: Lambretta Tech
Topic: 34mm Polini Carb... Jetting?
Replies: 4
Views: 800

Re: 34mm Polini Carb... Jetting?

The Polini is Keihin / PWK type carb.
by Adam_Winstone
Sat May 02, 2020 5:46 pm
Forum: Lambretta Tech
Topic: 34mm Polini Carb... Jetting?
Replies: 4
Views: 800

34mm Polini Carb... Jetting?

Hi all, Is anyone running a 34mm Polini carb on a piston port motor? If so, got a starting point for jetting please? Once we're allowed back out onto the roads then I can start to evaluate any setup that I start with, however, knowing what others may be using would give me a place to start. Thanks i...
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