Big Horsepower from GS 500

[ajensen]

Have any of you seen this video? https://www.youtube.com/watch?v=11Mike0d-lk
I know that Egli did a lot of racing and modified many different motorcycles.

One thing I wonder about is if anyone has experimented with regular, non-vacuum carbs. Also, many Japanese motorcycles have intake ports that are too big. The Yamaha 650 twin is a good example.

[GS Man]

I put a set of standard carbs on one of my builds and it ran great. better pick up. more grunt and a higher top speed.
I have the info with my carb supplier so kits can be made up with all the cables and splitters etc. The carbs were VMs

[ajensen]

I'd appreciate the information on the carbs. Thanks

[GS Man]

The Carbs were VM34s and I had the kit made up from Allens Performance in the UK.
If you email them sales@allensperformance.co.uk and mention the kit that was made for GRmoto for the GS500. (A chap called dave made it all up) I ran a K&N filter connected straight to the carbs so did away with the Air Box. Its not straightforward. However if you get the full kit it makes it a lot easier. I have done all the hard work having them developed into a kit.
I have also developed a Fuel Tap modification to convert the fuel tap into an ON-OFF-RESERVE removing the problematic vacuum system.
The amount of GS engines I have drained with fuel contaminated Oil is quite alarming.
I have loads of Mods, Parts & vids to share when things aren't so busy!

[GS Man]

Ill see if I can find any photos of my set up Im sure I had a Video of them in action, Just got to learn how to put videos up on this site