Bing parts $...Good Lord!

[Yikes]

So Monte, what all did you end up ordering from Motobins for your carb overhaul?

John M

[montmil]

John and others...

I had on hand the new diaphragms and a kit of the needed O-rings, enrichment valve gasket and the float bowl gasket. Earlier, I mentioned these came from Flugelnus http://www.flugelnus.com/ but I was in error. My records show they were outta Chi-Town BMW. Better prices.

MotoBins supplied the following bits... Some may be unnecessary but the carbs are as yet unopened so better safe than stopped:

Carb Top Screw (4)
Carb Mixture Tube, 32mm threaded (2)
Carb Main Jet Washer (2)
Carb Vacuum Take-Off screws (2)
Idle Mixture Screw 1970> (2)
Float Assembly 1970> (2)
Float Retaining Pin (2)
Float Needle (2)
Slide Needle 32mm 70-84 (2)
Idle Jet #40 (2)
Needle Jet # 2.66 (2)

Parts = 81.50 British Pounds - $117.00USD (about half what Bing NA wanted for their kits)
Air Carriage = 7.50 British Pounds - $10.98USD
1 British Pound = 1.46492 US Dollar as of 11 April 2009

Bob's BMW also has individual Bing parts but not anywhere close to the vast parts listing at M-Bins.

Monte

[Bob_Roller]

Monte,

A little late now, but you can use stainless countersunk AN, or NAS, 10-32 screws for the carb top, use the ones without any unthreaded shank.

They are a perfect fit !

[montmil]

Monte, A little late now, but you can use stainless countersunk AN, or NAS, 10-32 screws for the carb top, use the ones without any unthreaded shank. They are a perfect fit !

Never too late, Bob Robert, and thanks for the tip. I have a tub full of 'em in a variety of lengths. I like the cad finish so will save the others. MotoBins sells 'em cheap so it's all good.[smiley=thumbsup.gif]

Monte

[Justin B.]

10x32 is a perfect fit?  I coulda swore that screw was an M5x.8...

[Darwin_R65]

10x32 is a perfect fit?I coulda swore that screw was an M5x.8...  

If force doesn't work........you're not using enough.

[montmil]

10x32 is a perfect fit?I coulda swore that screw was an M5x.8...  

If force doesn't work........you're not using enough.

Just get a bigger hammer!

[Bob_Roller]

10x32 is a perfect fit?  I coulda swore that screw was an M5x.8...

I had no problem installing them.

I don't remember the diameter and thread pitch, but when I had my carbs apart about 12 years ago, the OEM steel screws were in bad shape, and they looked like they were close to a 10-32 screw, tried them and they worked.

I did some calculating, and when I got all the dimensions, there was only a few thousandths of an inch difference in diameter, and thread pitch.

[montmil]

Some you'z guys may have these helpful Bing carb overhaul sites bookmarked, but for dems dat don't:

http://largiader.com/tech/carbs/

http://gunsmoke.com/motorcycling/r100gs/carb_rebuild/index.html

Very helpful in motivating yourownself to get the job done.   Monte

[Justin B.]

Bob, interesting...

[montmil]

...Very helpful in motivating yourownself to get the job done. Monte

Quoting myself here. Of the four cross-point screws holding the carb tops onto the body -two screws per carb- one was totally cammed out by a PO and rusted up tight as a tick.

This morning, it was pretty simple to center up a bit and drill out the head using progressively larger bits. A small, tapered stone on the Dremel finished up the screw head removal without boogering up the carb top, as in mucho $$$.

Will remove the remaining threaded portion of the screw when the cables are removed along with the tops. So now I'm really motivated to overhaul the Bings as I can't ride without the screw! Plus, the '83 is apart for paint.

My day job is getting in the way of my fun jobs.

Happy Easter from a wet, chilly and almost burned up North Texas. Couple days of grass wildfires burned off 140,000+ acres plus and 100+ buildings/homes in the county just N'West of us. Luckily, all we got was smoke irritated eyes.

Monte

[Bob_Roller]

Mentioning buggering up the threaded hole on the carb body side, I've seen the hole drilled out , and a screw and self locking nut used instead.

[montmil]

That thought crossed my mind, Bob, just as the bit tried to "grab".  

Monte

[Justin B.]

I have always used a hand impact for getting these screws out and it's never let me down.  I always replace them with stainless steel allen head screws...

[Ed Miller]

I have always used a hand impact for getting these screws out and it's never let me down.  I always replace them with stainless steel allen head screws...

That's what I did, and I used anti-seize as well.