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by Grumpy225
Sat May 04, 2013 8:53 pm
Forum: Lambretta Tech
Topic: Blown exhaust gasket
Replies: 19
Views: 4046

Re: Blown exhaust gasket

I seem to remember that the solid copper gaskets should be heated until cherry red and then allowed to cool to anneal them. Then linish both faces of the gasket on some wet 'n dry fixed to a piece of glass. Also linish the gasket face of the U bend so that all surfaces are completely flat. A smear ...
by Grumpy225
Sat May 04, 2013 1:20 am
Forum: Lambretta Tech
Topic: Blown exhaust gasket
Replies: 19
Views: 4046

Re: Blown exhaust gasket

Every exhaust I've set up I've surfaced the flange or at least checked before installed.


https://www.youtube.com/watch?v=_o59kYl8DoI

Once the exhaust has been used the flange will bend. It's a flawed design, really should have 3 or 4 mounting points (MDB RT style)
by Grumpy225
Wed May 01, 2013 6:32 am
Forum: Lambretta Tech
Topic: Can't move crank from driveside bearing
Replies: 10
Views: 2338

Re: Can't move crank from driveside bearing

I agree with Lopez here. Have always threadded an old sprocket bolt in to the crank and just tapped it out of the bearing. Don't wang on it, just steady taps and I've never had one not come loose and don't let it fall out of the case. Always replace the bearing since the race isn't supported when ta...
by Grumpy225
Sun Apr 28, 2013 5:30 am
Forum: Tech FAQ
Topic: Exhaust decoke
Replies: 5
Views: 3004

Re: Exhaust decoke

Call around to local radiator and machine shops, ask if they have or know who has a hot tank. Heated carbolic acid which works great to clean out coked up exhausts (and paint, powder coating also).
by Grumpy225
Fri Apr 26, 2013 5:02 pm
Forum: Lambretta Tech
Topic: Intermittent when running
Replies: 6
Views: 1845

Re: Intermittent when running

Sounds like 95 was too big of a jump. They call it a main jet because it affects everything. This is one of the reasons I don't think dyno's are the end all to tuning. They are a great resource to get that max HP out of a motor but that is under ideal conditions (unless the tuner understands road vs...
by Grumpy225
Thu Apr 25, 2013 1:24 am
Forum: Lambretta Tech
Topic: bgm/mb clubman exhaust
Replies: 88
Views: 46703

Re: bgm/mb clubman exhaust

I have my MB big box sat here now....just can't decide on a finish. Had two quotes for a ceramic coat...£306. ,zircotec!!!! And £85,cam coat Now whilst the later sounds good....just makes me think what the hell were they going to coat it in for £306!? Too bad you can't buy them pre coated - must be...
by Grumpy225
Wed Apr 24, 2013 4:13 pm
Forum: Lambretta Tech
Topic: bgm/mb clubman exhaust
Replies: 88
Views: 46703

Re: bgm/mb clubman exhaust

Just got these back today Ceramic coated. $75 each Where was that done? Do you know if they accept used exhausts that have been sanded down to bare metal as well...? Cheers Victor I have a shop local to me in the US that does the work. Typically with used exhausts I have them hot tanked first to re...
by Grumpy225
Wed Apr 24, 2013 5:36 am
Forum: Lambretta Tech
Topic: bgm/mb clubman exhaust
Replies: 88
Views: 46703

Re: bgm/mb clubman exhaust

Just got these back today


Image

Image

Image

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Ceramic coated. $75 each
by Grumpy225
Sun Apr 21, 2013 11:30 pm
Forum: Lambretta Tech
Topic: center stand spring.
Replies: 3
Views: 1448

Re: center stand spring.

Never seen a shorter spring for the center stand. What usually happens is the stand bolts have gotten loose or the brackets are worn out and are allowing play in the stand.

It's a Lambretta and will shake its self apart unless you use locking hardware.
by Grumpy225
Thu Apr 18, 2013 6:22 pm
Forum: Lambretta Tech
Topic: Dead speedo...
Replies: 4
Views: 1390

Re: Dead speedo...

I rote an article on how to rebuid a s3 speedometer for the LCUSA a few years ago. PM me your email and I'll send you a PDF of it

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