The New And Improved Unofficial R65 Forum V2

Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: clouseau on May 12, 2009, 02:43:34 PM

Title: Bing Jet Needle help
Post by: clouseau on May 12, 2009, 02:43:34 PM
Well, I've started on the Bing rebuild (64/32/325 - 326) and am installing new Jet Needles, clips and retainers but I don't know if I should press the clip and retainer ALL the way to the bottom of the shaft because they seem to have settled nicely into a groove about 1/4" up from the bottom.
Does anyone know definitively where they should go?  
Thanks!
Title: Re: Bing Jet Needle help
Post by: Bob_Roller on May 12, 2009, 03:13:22 PM
Best I can remember, they go all the way to the bottom.

If by chance you haven't removed the other needle from the slide, measure how much needle sticks out, and mark the new needle accordingly.
Title: Re: Bing Jet Needle help
Post by: clouseau on May 12, 2009, 03:19:53 PM
Thanks, I called Bing and they confirmed they go all the way down.
Strange why there is a groove in the shaft that catches the retainer...
Title: Re: Bing Jet Needle help
Post by: Bob_Roller on May 12, 2009, 04:40:16 PM
Do you have the 'hair pin' type clips that go on the needle itself ?

After installing mine about 2 years ago, I found out there is an 'upgrade' to this, looks like a rubber plug that the needle goes through, from what I've been told, it makes reassembly a lot quicker .
Title: Re: Bing Jet Needle help
Post by: clouseau on May 12, 2009, 04:51:58 PM
If by hair pin you mean shaped like packman.
The retainer looks kind of like a sprocket.
Title: Re: Bing Jet Needle help
Post by: Bob_Roller on May 12, 2009, 05:40:39 PM
Yes, you described it perfectly.
Title: Re: Bing Jet Needle help
Post by: montmil on May 12, 2009, 07:06:13 PM
Quote
...I found out there is an 'upgrade' to this, looks like a rubber plug that the needle goes through, from what I've been told, it makes reassembly a lot quicker.

What a coincidence. I found pieces of a rubber plug on top of one of my Bings' needle clip during the recent overhauls. Tossed the trash.
Title: Re: Bing Jet Needle help
Post by: clouseau on May 13, 2009, 06:13:43 PM
Hey, at least you had something there. Both of my Bings had no retainer clips... Sometimes corrosion is your friend as it was holding the needle clips in place.
Title: Re: Bing Jet Needle help
Post by: Bob_Roller on May 13, 2009, 06:27:15 PM
When I removed the needles for the first time, I found the left carb needle was set at position number 2 from the factory,it's supposed to be at the number 3 position, explained why the carbs were always a battle to get synchronized .