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Search: Posts Made By: bmwrench
Forum: Airheads Yesterday, 06:46 PM
Replies: 11
Views: 367
Posted By bmwrench
The worst parts of the job are getting the pivot...

The worst parts of the job are getting the pivot pins out, renewing the pivot bearings, and getting the driveshaft back on the rear drive. The pivots-at least the non-adjustable one-is Loctited. ...
Forum: Airheads Yesterday, 06:40 PM
Replies: 3
Views: 162
Posted By bmwrench
I just set them on the bench. To torque the...

I just set them on the bench. To torque the flywheel, I stick a pin through the rear engine mounting hole.
Forum: Airheads 06-29-2015, 02:03 PM
Replies: 4
Views: 248
Posted By bmwrench
Retainer clip?

Retainer clip?
Forum: Airheads 06-28-2015, 04:40 PM
Replies: 12
Views: 421
Posted By bmwrench
The pin that the floats pivot on simply pull out....

The pin that the floats pivot on simply pull out. A pair of needle-nose pliers usually does the trick.
Forum: Airheads 06-28-2015, 04:37 PM
Replies: 11
Views: 595
Posted By bmwrench
Looks great. Now, get rid of that Pulse Air...

Looks great. Now, get rid of that Pulse Air System.
Forum: Airheads 06-28-2015, 04:35 PM
Replies: 11
Views: 436
Posted By bmwrench
The discoloration is typical of a motor that a...

The discoloration is typical of a motor that a mouse has lived in. I'd replace that harness from stator to diode board, and give the rest a good cleaning.
Forum: Airheads 06-28-2015, 04:29 PM
Replies: 4
Views: 248
Posted By bmwrench
Use a pair of snap-ring pliers in the holes in...

Use a pair of snap-ring pliers in the holes in the ring.
Forum: Airheads 06-28-2015, 04:27 PM
Replies: 16
Views: 661
Posted By bmwrench
lol!

lol!
Forum: Airheads 06-28-2015, 04:26 PM
Replies: 16
Views: 661
Posted By bmwrench
This is the reason BMW changed hole patterns in...

This is the reason BMW changed hole patterns in 1981.
Forum: Airheads 06-27-2015, 06:20 PM
Replies: 11
Views: 595
Posted By bmwrench
Here's some tips for your new exhaust: Put a gob...

Here's some tips for your new exhaust: Put a gob (a few ounces) of grease in the header pipe at the port end. This will reduce coloring of the headers and extend the sytems life. If you have...
Forum: Airheads 06-27-2015, 06:13 PM
Replies: 6
Views: 353
Posted By bmwrench
Mountainj's advice is right. The lock is also...

Mountainj's advice is right. The lock is also available. Someone in the bikes past probably replaced the cap and damaged the lock cylinder installing it, and gravity held it in place until you...
Forum: Airheads 06-27-2015, 06:08 PM
Replies: 16
Views: 521
Posted By bmwrench
I have on occasion shortened the shoulder on the...

I have on occasion shortened the shoulder on the pivot bolt. It worked fine both before and after, but the slop offended me.
Forum: Airheads 06-27-2015, 06:06 PM
Replies: 11
Views: 426
Posted By bmwrench
Thanks, everybody. I had a hose returned to by a...

Thanks, everybody. I had a hose returned to by a customer who said his bike had a male fitting at the top, so it made me question my schematic and memory.
Forum: Airheads 06-27-2015, 06:03 PM
Replies: 24
Views: 798
Posted By bmwrench
Old Advice

Pull the hose off the hard line at the caliper and install a bleeder in the end of the hose. If the master and hose are free of air, you'll have a rock hard lever. If so, the problem lies in the...
Forum: Airheads 06-26-2015, 07:20 PM
Replies: 12
Views: 488
Posted By bmwrench
You almost can't go wrong in that corner of the...

You almost can't go wrong in that corner of the country. The BRP has a lot to offer in road quality, scenery and some pieces are actually challenging. The speed limit is about 20 MPH low. Spend...
Forum: Airheads 06-26-2015, 05:00 AM
Replies: 7
Views: 319
Posted By bmwrench
Yes, it will bolt on. I prefer a 14mm for this...

Yes, it will bolt on. I prefer a 14mm for this application, though.
Forum: Airheads 06-25-2015, 07:37 PM
Replies: 13
Views: 475
Posted By bmwrench
Yes, that will work. There is the complication...

Yes, that will work. There is the complication of brake hoses; you can get just an upper hose and under-tank distributer, blocking off the unused holes, or simply run a hose from the master cylinder...
Forum: Airheads 06-24-2015, 02:54 PM
Replies: 13
Views: 475
Posted By bmwrench
I answered a bit faster than I should have. The...

I answered a bit faster than I should have. The control for a 14mm master is 32 72 2 310 747. 32 72 2 310 746 gets a 13mm master.

The two-cable cam won't work with a single-cable control. ...
Forum: Airheads 06-24-2015, 02:38 PM
Replies: 11
Views: 426
Posted By bmwrench
The "early" master cylinder fits '88-'90 GS. The...

The "early" master cylinder fits '88-'90 GS. The "late" one is for '91 on.
Forum: Airheads 06-24-2015, 02:33 PM
Replies: 14
Views: 520
Posted By bmwrench
If you get a 5-Speed, you'll need a clutch...

If you get a 5-Speed, you'll need a clutch pushrod and release mechanism; thrust bearing, piston, and lever.

Chris Hodgson, Mr San Jose BMW, ran 4-Speeds in his race bikes for years. He felt...
Forum: Airheads 06-24-2015, 08:13 AM
Replies: 11
Views: 426
Posted By bmwrench
Thanks, guys. Keep those cards and letters...

Thanks, guys. Keep those cards and letters coming!
Forum: Airheads 06-24-2015, 04:54 AM
Replies: 11
Views: 426
Posted By bmwrench
The '91 on bike use a longer hose and a different...

The '91 on bike use a longer hose and a different master cylinder. Thanks for your response. Anybody else?
Forum: Airheads 06-23-2015, 07:14 PM
Replies: 11
Views: 426
Posted By bmwrench
'88-'90 R100GS Brake Hose

Hey, GS owners, I need some help. Does your brake hose have a banjo on its upper end, or a male flare fitting?
Forum: Airheads 06-23-2015, 07:08 PM
Replies: 13
Views: 475
Posted By bmwrench
The number you quoted (32722302368) will work,...

The number you quoted (32722302368) will work, but will require you to switch to a 2-1 cable. I prefer to use the control from an '85 on bike 32722302368 for a 14mm master cylinder 32 72 2 310 746...
Forum: Airheads 06-23-2015, 07:01 PM
Replies: 14
Views: 520
Posted By bmwrench
This is a common problem with 4-Speed gearboxes. ...

This is a common problem with 4-Speed gearboxes. It is possible that the output shaft needs to be re-shimmed, but more likely that the engagement ring or dogs are worn. The engagement rings are...
Forum: Airheads 06-23-2015, 06:52 PM
Replies: 5
Views: 241
Posted By bmwrench
It would probably be easier to bleed it one step...

It would probably be easier to bleed it one step at a time: Install the bleed nipple from the caliper into the hose connection at the master and work the lever until you have a solid lever. Install...
Forum: Airheads 06-22-2015, 05:27 PM
Replies: 16
Views: 776
Posted By bmwrench
Let's hope they lied.

Let's hope they lied.
Forum: Airheads 06-22-2015, 03:25 PM
Replies: 13
Views: 556
Posted By bmwrench
The pictured repair is one of the aluminum welded...

The pictured repair is one of the aluminum welded types. In this case, the original stub was milled off and a new one welded on. The other type consists of welding over the original threads and...
Forum: Airheads 06-22-2015, 03:18 PM
Replies: 10
Views: 292
Posted By bmwrench
Don't even pull the plugs. Hit the starter...

Don't even pull the plugs. Hit the starter button a few times to confirm that it works and reassemble.
Forum: Airheads 06-22-2015, 03:16 PM
Replies: 16
Views: 776
Posted By bmwrench
Valves can close up dramatically after a valve...

Valves can close up dramatically after a valve job. That's why BMW spec'd clearances at .006/.010" when we set up most of these bikes when they were new. When I do a valve job, I don't even use...
Forum: Airheads 06-21-2015, 07:56 PM
Replies: 12
Views: 453
Posted By bmwrench
Did you notice that there is a left and right...

Did you notice that there is a left and right header clamp hanger?
Forum: Airheads 06-21-2015, 07:51 PM
Replies: 13
Views: 556
Posted By bmwrench
If the exhaust stub threads have been repaired,...

If the exhaust stub threads have been repaired, take a look at how it was done before you tighten them. Most of the repairs are done by welding the existing stub with aluminum, and they can be...
Forum: Airheads 06-21-2015, 07:45 PM
Replies: 17
Views: 615
Posted By bmwrench
The EMGOs fit quite well, but they are quite...

The EMGOs fit quite well, but they are quite thin, and the chrome, which looks very nice when new, seems to corrode quickly unless it is well cared for. A regular cleaning and waxing should keep...
Forum: Airheads 06-21-2015, 07:40 PM
Replies: 13
Views: 369
Posted By bmwrench
'70-'72 /5s had no vent above the gearbox output...

'70-'72 /5s had no vent above the gearbox output shaft seal. This allows pressure to build in the swing arm. This causes a sound boot to balloon, and weak boots to leak. The solution is a pain;...
Forum: Airheads 06-21-2015, 07:34 PM
Replies: 31
Views: 1,022
Posted By bmwrench
Always measure the crank. I've seen a couple of...

Always measure the crank. I've seen a couple of small-bore (R75 and R80) cranks that were ground undersize by the factory. It's a rude awakening to put new standard bearings in and hear a rod...
Forum: Airheads 06-20-2015, 12:15 PM
Replies: 31
Views: 1,022
Posted By bmwrench
The cap does tend to stick to the journal, but...

The cap does tend to stick to the journal, but even if it doesn't, it won't hurt anything.
Forum: Airheads 06-20-2015, 12:13 PM
Replies: 40
Views: 2,391
Posted By bmwrench
What does it do?

What does it do?
Forum: Airheads 06-19-2015, 07:38 PM
Replies: 40
Views: 2,391
Posted By bmwrench
What is the red wire? It appears to be connected...

What is the red wire? It appears to be connected to the same coil terminal as the black wire.
Forum: Airheads 06-18-2015, 07:02 PM
Replies: 8
Views: 267
Posted By bmwrench
Noman has one.

Noman has one.
Forum: Airheads 06-18-2015, 07:01 PM
Replies: 6
Views: 358
Posted By bmwrench
Just curious-how many miles are on your bike? Is...

Just curious-how many miles are on your bike? Is the u-joint worn/notchy?
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