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Fitting a 22mm carb to a series 2
Posted: Fri Dec 16, 2016 6:25 pm
by Scootermonkey
Help needed. I've never come across this problem before. Li 125 S2 fitted with a 175 top end. 22mm carb and manifold fitted, along with a GP air hose. Engine back in and the air hose is a good 3/4" away from the carb mouth. Too much to stretch the hose without kinking it and restricting air flow. Found an old S2 manifold and see they're actually longer than the 22mm one, but obviously too small for the carb. Any ideas anyone? I've fitted GP carbs to S2's before without this problem.
Re: Fitting a 22mm carb to a series 2
Posted: Sat Dec 17, 2016 12:45 pm
by Norrie Bodge
would one of these Scootopia longer Jet type rubbers not help?
https://cdn.shopify.com/s/files/1/0878/ ... 1457474234
Re: Fitting a 22mm carb to a series 2
Posted: Sat Dec 17, 2016 12:53 pm
by Scootermonkey
No don't think so, I think the Jet 200 hose is taller but wouldn't solve this problem. It's down to the manifold being shorter for a 22mm. Thanks anyway
Re: Fitting a 22mm carb to a series 2
Posted: Sat Dec 17, 2016 1:13 pm
by HxPaul
It sounds like theirs something wrong with the manifold,or your air box is not fitted correctly.This is the correct manifold it fits a smallblock motor with a SH22 carb.
http://www.scooterrestorations.com/lamb ... -manifold/
Re: Fitting a 22mm carb to a series 2
Posted: Sat Dec 17, 2016 1:30 pm
by vegansydney
I used a TV/2 manifold and swappped the bushing in the SH2/22 for a TV/2 type (available from Dell'orto UK). As the curvature of the TV/2 manifold (and LI/2) is different to the S3 type it also means you won't have to trim your cylinder cowl for it to fit.
Re: Fitting a 22mm carb to a series 2
Posted: Sat Dec 17, 2016 10:08 pm
by Scootermonkey
vegansydney wrote:I used a TV/2 manifold and swappped the bushing in the SH2/22 for a TV/2 type (available from Dell'orto UK). As the curvature of the TV/2 manifold (and LI/2) is different to the S3 type it also means you won't have to trim your cylinder cowl for it to fit.
Yes, the two manifolds are different lengths, so need to either change the plastic bush in the carb or find some sort of spacer sleeve to go between the manifold and carb. Cheers mate
Re: Fitting a 22mm carb to a series 2
Posted: Mon Dec 19, 2016 6:24 pm
by HxPaul
Scootermonkey wrote:vegansydney wrote:I used a TV/2 manifold and swappped the bushing in the SH2/22 for a TV/2 type (available from Dell'orto UK). As the curvature of the TV/2 manifold (and LI/2) is different to the S3 type it also means you won't have to trim your cylinder cowl for it to fit.
Yes, the two manifolds are different lengths, so need to either change the plastic bush in the carb or find some sort of spacer sleeve to go between the manifold and carb. Cheers mate
If you have a series 2 manifold and your changing the plastic sleeve or making a bush to fit the 22mm onto the manifold,dont forget that the series 2 manifold is only 20mm.
