Im going to upgrade my series 2 engine firstly I cant afford a muggelo,rt, imola etc so Im going to put on a 175 kit. I have a jetex and a AF clubman so will be run with these. What I dont no is what is best.
Should I
1. Buy an of the shelve kit?
2. Take a 150 barrel out to 175, If so what piston should I use and what is the best barrel to use as in a gp150 or li etc.
175 kit
- Andy Pickering
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Get a good quality piston..maybe asso or the like and get some decent porting work on it..you know the man.
my stage 4 has exceded all my expectations..
Ricspeed, gone but never forgotten RIP my friend #59
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CPH Lambretta
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Which of the many men would that be?
Slow is the new fast!
- sideout
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It has been noted that some 175 kits have small piston - bore clearance. This could lead to seizing, however carefully they are run in. If you go this route it's worth checking before you fit.
I know, I've been there 
- Andy Pickering
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The man we have both used to great effect..!!!CPH Lambretta wrote:Which of the many men would that be?

Ricspeed, gone but never forgotten RIP my friend #59
- LI150
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So its prob best to get a 150 barrel bored out and a decent piston as appose to a of the shelf kitLam46 wrote:Get a good quality piston..maybe asso or the like and get some decent porting work on it..you know the man.my stage 4 has exceded all my expectations..
- Andy Pickering
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Prob cheaper as you might not get a decent quality piston..
Ricspeed, gone but never forgotten RIP my friend #59
- sean brady scooters
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actually ...i would go for and recomend the AF 175 kit...and then get that sorted and ported...as opposed to any bored out 150 /or 175 cc cast cyl... 
Sean Brady Scooters - 01765 690 698
