Skip to content
View in the app

A better way to browse. Learn more.

Trials Central

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Manifold Extension

Featured Replies

About 3 or 4 years ago I bought a really well made aluminium manifold extension for my gasgas pro. It fits on the carburettor and extends into the air inlet to the airbox without using the standard rubber adaptor.

I now need another of these and I've lost the email and eBay details of the guy that was making them.

Does anyonbe else have one of these or know where I can get one?

I seem to remember they were about 15 quid.

Thanks!

Andy

About 3 or 4 years ago I bought a really well made aluminium manifold extension for my gasgas pro. It fits on the carburettor and extends into the air inlet to the airbox without using the standard rubber adaptor.

I now need another of these and I've lost the email and eBay details of the guy that was making them.

Does anyonbe else have one of these or know where I can get one?

I seem to remember they were about 15 quid.

Thanks!

Andy

Here in the U.S. we can get them through LewisportUSA, who has V-Mar make them ( http://www.lewisportusa.com/parts_gasgas.htm ). I would guess something similiar would be available in the UK?

I have an 02' Pro and the airbox boot fits directly on the Dellorto (which it is designed for), but the 03' airbox boots are designed to fit the large bell of a Keihin PWK28, so the rubber donut is used to "adapt" the Dellorto to the boot actually made for the Keihin.

Jon

  • Author

Thanks Jon

They certainly look the same....although I'm sure mine was made by a bloke here in his workshop and sold through ebay..and much cheaper.

I think his email was something like ekb250@xxxxx...if that rings any bells with anyone.

Andy

  • Author

Sorry...I'don't

Best way to contact him is through ebay... his member name is ikb250.

Andy

Guess what its me!!

I'll have to get the lathe stoked up again!!

The US ones are copies of mine!!!!! They may be better you never know!!!

Ian

Guess what its me!!

I'll have to get the lathe stoked up again!!

The US ones are copies of mine!!!!! They may be better you never know!!!

Ian

Ian I want to thank you for a great design. That little bugger saves me so much time.

Thanks again....

--Biff

Guess what its me!!

I'll have to get the lathe stoked up again!!

The US ones are copies of mine!!!!! They may be better you never know!!!

Ian

You da man!

A great invention that has saved lots of time and probably a few engines. If the stock donut pops out (it's often about 5mm short), an engine will ingest a bunch of grit which will quickly eat the insides. I've seen it happen.

Good job!

Jon

good man. i have been after one for a while i will be looking you up on ebay shortly cheers.

good man. i have been after one for a while i will be looking you up on ebay shortly cheers.

Or just send me a pm from here :rolleyes:

  • 11 years later...

Hello

Bringing this very old topic back to life!

I need to extend either the carb to reed block rubber or the airbox to carb rubber to get a good seal on my 2018 Gas Gas TXT

Does anyone have any suggestions or pint me in the right direction.

Many thanks

Gareth

 

Howdy. I believe the VMar units are still available. Dunno about the one made on your side of the pond.

But here's a quick/no cost solution to try first. Release the carb from the reed block. Secure it well to the airbox outlet (aka the snorkel)  Use a hot air gun (>>> not an open flame!!! <<<) to soften the snorkel material. Heat it from all sides uniformly. When it's sufficiently pliable, push the carb into the reed block and secure.Let it cool and - voila - it should be "back to normal".

For an even "better" seal, I secure my rubber adapter to the carb using an adhesive called "Shoe Goo". It's some sort of vinyl adhesive. 

Edited by d2w

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.