Pierburg Secondary Choke Mod ala Stock Rods

[Dave A]

A lot of Stock rod engines run a mod to the pierbutg carb that opens both chokes at the same time. I am running in a similar restricted formula to stock rods as far as engine mods are concerned, in Endurance rallying. Does anyone know of this mod, how its done, pics would be fantastic. Pm me if you dont want to publicly explain!

Any info much appreciated.

[autoworksnovasport]

contact calamityjosh i think he runs smallblock in his cars

[garyc]

The way I have seen it done is disconnect the vacuum link and then attach a spring then apparently when you open the primary barrel it pulls open round the cam to open the 2nd barrel.

I think to can also make a 2nd bell cranks and use a rod so they both open at the sametime. I think this bloke Jamie does them try here http://www.jbracingmotorsport.co.uk/

Gary

[Dave A]

Thanks for the info guys, in contact with a stock rod engine builder now. Does anyone have any pics of this done though?

[garyc]

Stock rod drivers are highly secretive so highly unlikely.