iron barrel

Anything related to Lambrettas... ask tech questions, post helpful info, or just read and learn.
User avatar
red ghost
registered user
Posts: 545
Joined: Wed Jan 07, 2009 7:46 pm
Xbox live gamer tag: Pleasure Master
ebay user ID: jacketaviator
Main scooter: lambretta gp150
Location: Gold Coast Queensland Australia
Contact:

Fri Jan 16, 2009 9:46 am

What's the safest size an iron 125 barrel will go?
How come phonetics isn't spelt with an 'f'?

Check out my boobs! <-- <--Just imagine being burried between those puppies!

bristolmod
registered user
Posts: 1739
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:

Fri Jan 16, 2009 9:52 pm

I recon 150 with no problems.

175 is pushing it but may be OK

Chris
Scootering since 1968.

J1MS
registered user
Posts: 1153
Joined: Sat Jan 10, 2009 12:02 am
Contact:

Sat Jan 17, 2009 12:29 am

red ghost wrote:What's the safest size an iron 125 barrel will go?
between the fins the 125's diameter is about 5mm thinner than a 150's and when a 125s bored out to a 175 they have been known to fold like a squeeze box when tightened up onto there studs! Its like a sort of crumple zone after being bored

User avatar
corrado
Dealer
Posts: 2581
Joined: Thu Jan 08, 2009 1:12 am
Main scooter: Lambretta GP
Location: Top of Blackpool Tower
Contact:

Sat Jan 17, 2009 1:21 am

You'll get overheating problems going to 175 and the seizures that go with it. You'll pick up a 150 cheaper than the cost of boring the 125 to 150 anyway. I'm sure there'll be plenty of freebies knocking about for P&P money.

shocky
registered user
Posts: 2139
Joined: Wed Jan 07, 2009 12:33 pm
Location: cheltenham
Contact:

Sat Jan 17, 2009 3:49 pm

i was told years ago that 60mm was the biggest to go to so about 165cc mahle used to do a nice piston for these i have one somewere it has dykes rings and is very light
We sleep soundly in our beds because rough men stand ready in the night to visit violence on those who would do us harm

adriang
registered user
Posts: 86
Joined: Mon Jan 12, 2009 8:42 am
Location: Brisbane, QLD, Australia
Contact:

Tue Jan 20, 2009 7:51 am

I certainly wouldn't be doing that here in QLD Frank. We were discussing if we'd ever run an iron barrel with the alloy options out there now.

If you fancied boring out a 150 barrel, both Cainy and I have a couple kicking around.

User avatar
red ghost
registered user
Posts: 545
Joined: Wed Jan 07, 2009 7:46 pm
Xbox live gamer tag: Pleasure Master
ebay user ID: jacketaviator
Main scooter: lambretta gp150
Location: Gold Coast Queensland Australia
Contact:

Tue Jan 20, 2009 9:18 am

Yeah, I was just curious as Paul had one on ebay
How come phonetics isn't spelt with an 'f'?

Check out my boobs! <-- <--Just imagine being burried between those puppies!

User avatar
jonny snatchsniffer
registered user
Posts: 277
Joined: Mon Jan 12, 2009 11:53 am
Location: camberley, surrey
Contact:

Tue Jan 20, 2009 5:27 pm

ive done a 125 barrel out to 62mm it was a s3 1962 model, i first ported the 125 as it was then got it bored out to 62mm using a thin ringed asso piston and ported it some more i think it was about 155/160 inlet and around 170 exhaust the obligitory 30mm and a pm pipe, ran very well, i never had any problems with it at all but maybe i was lucky.

Post Reply Previous topicNext topic
  • Information