The New And Improved Unofficial R65 Forum V2

Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: jp9094 on January 22, 2018, 01:06:31 PM

Title: Vacuum Port on Bing 64/32/335 & 6
Post by: jp9094 on January 22, 2018, 01:06:31 PM
Having bit the bullet and replaced the defective Butterfly axle and "O" ring on the left side carburetor I found myself struggling to set the idle and balance the carbs.

After much to-ing and fro-ing, I  seem to have set the idle mixture (3/4 turn) and set the idle to 1250 RPM (per the tacho).

However I was thinking of trying to balance the carbs with some kind of manometer, but cannot seem to find any vacuum ports on these Bings. I have read somewhere that all the post '80 Bings have ports, but I do not seem to see them.

Am I going blind? Do I need to buy some ports from the Bing Agency and retro fit them??

Any and all help appreciated. Many thanks in advance.
Title: Re: Vacuum Port on Bing 64/32/335 & 6
Post by: Barry on January 22, 2018, 01:38:49 PM
If you have them they should look like this. The vacuum port is the nearest stub on this right hand carb. On a left hand carb the vacuum port will be on the inside of the mixture screw instead of the outside.

Title: Re: Vacuum Port on Bing 64/32/335 & 6
Post by: mrclubike on January 22, 2018, 07:23:59 PM
You have to  watch the   balance  of  the carbs at the same time  you  set idle speed 
Title: Re: Vacuum Port on Bing 64/32/335 & 6
Post by: Barry on January 23, 2018, 04:08:43 AM
Nice one.  I've saved the picture. 

What did you edit with ?
Title: Re: Vacuum Port on Bing 64/32/335 & 6
Post by: jp9094 on January 23, 2018, 11:11:35 AM
Many thanks. As we used to say "Down Under", Problem Solvered!

Title: Re: Vacuum Port on Bing 64/32/335 & 6
Post by: mrclubike on January 23, 2018, 07:15:23 PM
FastStone
it is free