af 175
ive got an af 175 kit on my series 2 which has done thousands of miles trouble free over the years, its getting a bit slow and worn out now and i was told i could bore it to a 186 and put a mugello piston in. does anyone know if this will work ?
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bristolmod
- registered user
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- Joined: Wed Jan 07, 2009 8:42 am
- Main scooter: Lambretta TV175 S3- what else!
- Location: Bali-Hai bar, Locarno Ballroom Bristol, 1967!- mines a Brown Split!!
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I've bored those sleeved alloy kits from 62mm to 66mm with no ill effects. Works very well with no nip ups and no rattles (3 thou clearance). A bore from 62mm to 64 mm with a "186" piston and suitable head should therefore work fine.
Chris
Chris
Scootering since 1968.
actually its the iron barrel but even better if i can use the mugello piston, thanks
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bristolmod
- registered user
- Posts: 1741
- Joined: Wed Jan 07, 2009 8:42 am
- Main scooter: Lambretta TV175 S3- what else!
- Location: Bali-Hai bar, Locarno Ballroom Bristol, 1967!- mines a Brown Split!!
- Contact:
I've done the cast iron barrels out from 62 to 66 as well- no problems as long as a decent piston is used and you take care with clearances (3 thou works for me as long as you pay attention to running in). I tend to run in "little and often" (short fast runs; cool down then out again)
Good Luck
Chris
Good Luck
Chris
Scootering since 1968.