BritBike Forum logo
BritBike Sponsor BritBike Sponsor BritBike Sponsor
BritBike Sponsor

BritBike Sponsor

BritBike Sponsor
BritBike Sponsor BritBike Sponsor BritBike Sponsor
The Bonneville Shop JRC Engineering dealers
Home | Sponsors, Newsletter | Regalia | Calendar | Bike Project | BritBike Museum | Spiders Cartoons, "OLD" BritBike Forum | DVD- Manuals & Parts books | BritBike Stickers & Decals
Upgrade to: Premium Membership | Premium Life Membership | Vendor Membership | Site Sponsor Membership
Member Spotlight
mike treloar
mike treloar
new zealand
Posts: 30
Joined: December 2006
Show All Member Profiles 
Shout Box
Search eBay for motorcycle parts in following countries
Australia, Canada, France, Holland, Italy, United Kingdom, USA
Random Gallery photo
Who's Online Now
41 registered members (Adam M.), 263 guests, and 340 spiders.
Key: Admin, Global Mod, Mod
Newest Members
Davenz13, Sean65, Rerock, pkuzyk, Hunter S
10476 Registered Users
Top Posters(30 Days)
NickL 89
franko 71
Triless 67
Popular Topics(Views)
747,003 mail-order LSR
Forum Statistics
Forums34
Topics68,810
Posts670,260
Members10,476
Most Online3,995
Feb 13th, 2017
Like BritBike.com on Facebook

Previous Thread
Next Thread
Print Thread
Rate Thread
Mikuni Carbs and Manifold Adapter #274910
09/16/09 7:59 pm
09/16/09 7:59 pm
Joined: Jan 2008
Posts: 1,530
Farmington,Connecticut,USA
JBMorris Offline OP
BritBike Forum member
JBMorris  Offline OP
BritBike Forum member

Joined: Jan 2008
Posts: 1,530
Farmington,Connecticut,USA
Hi Guys,
The carb kit i have recommends the body and the alloy adapter should be 1/16" clear to prevent 'Frothing'.(And keep them from rattling)
I'm planning on using a fat O-ring to separate the two.
Good idea?
Bad idea?
I have replaced the rubber connector from radiator hose to an auto gas filler hose- much stiffer and should wear better.
Original hose cracked after one year's use.
All info welcome

Last edited by Brimor; 09/16/09 8:01 pm.

1978 Bonneville T140V PX
Support Your #1 BritBike Forum!

Check out British motorcycles for sale:
British Motorcycles on e-Bay UK, British motorcycles on e-Bay North America
Check out British motorcycles for sale:
British Motorcycles on e-Bay UK, British motorcycles on e-Bay North America
Re: Mikuni Carbs and Manifold Adapter [Re: JBMorris] #274932
09/16/09 11:20 pm
09/16/09 11:20 pm
Joined: Aug 2001
Posts: 4,591
Owego, NY, USA
Mark Z Offline
BritBike Forum member
Mark Z  Offline
BritBike Forum member

Joined: Aug 2001
Posts: 4,591
Owego, NY, USA
I've never had a problem with rattling, and I just shove 'em together. I think when you tighten the hose clamps, the hose pushes them apart just a bit. Or the hose is so stiff that it prevents any movement.

I figure that little space can't be good for fuel flow - the original couplers (from MAP) were "stepped" on the inside to fill the gap. But, they were way soft and only lasted a couple of months. Yeah maybe an o-ring or a rubber washer, but it better be neoprene or Viton.

Yeah fuel filler hose - that's the stuff!


Mark Z

'65(lower)/'66(upper, wheels, front end, controls)/'67(seat, exhaust, fuel tank, headlamp)/'70(frame) A65 Bitsa.

Moderated by  Alan_nc 


Home | Sponsors | Newsletter | Regalia | Calendar | Bike Project | BritBike Museum | Spiders Cartoons | "OLD" BritBike Forum | DVD- Manuals & Parts books | BritBike Stickers & Decals
Upgrade to: Premium Membership | Premium Life Membership | Vendor Membership | Site Sponsor Membership
Powered by UBB.threads™ PHP Forum Software 7.6.2