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Search: Posts Made By: bmwrench
Forum: Airheads 03-27-2015, 05:29 AM
Replies: 15
Views: 991
Posted By bmwrench
If a magnet sticks, they're iron, although...

If a magnet sticks, they're iron, although Powerseal is plating iron bores with Nikasil. You can tell pretty easily by the color of the aluminum and they're weight if you have any to compare; the...
Forum: Airheads 03-25-2015, 05:33 AM
Replies: 19
Views: 685
Posted By bmwrench
Siebenrock now offers a replacement gear. They're...

Siebenrock now offers a replacement gear. They're too expensive (around $200.00) for me to stock at the moment, but could be special ordered.
Forum: Airheads 03-21-2015, 06:40 PM
Replies: 1
Views: 268
Posted By bmwrench
I assume you're asking about the rear wheel. ...

I assume you're asking about the rear wheel. Yes, it will fit.
Forum: Airheads 03-21-2015, 06:36 PM
Replies: 7
Views: 306
Posted By bmwrench
Your picture show a very unusual bearing...

Your picture show a very unusual bearing ass'y/pushrod. It looks like something was added to the pushrod just forward of the bearing race.
Forum: Airheads 03-19-2015, 06:32 PM
Replies: 25
Views: 897
Posted By bmwrench
Surprisingly, it's normal. Now everyone is going...

Surprisingly, it's normal. Now everyone is going to run out and pull their filters.
Forum: Airheads 03-19-2015, 05:33 AM
Replies: 162
Views: 7,826
Posted By bmwrench
It looks to me like it was overheated with a...

It looks to me like it was overheated with a torch when disassembling it.
Forum: Old's Cool 03-18-2015, 05:23 AM
Replies: 9
Views: 921
Posted By bmwrench
To add to Crisis' points, the face of the ring in...

To add to Crisis' points, the face of the ring in IC engines is rarely flat; second rings have a taper to scrape oil from the cylinder wall and top rings come in any number of designs. However, if...
Forum: Old's Cool 03-17-2015, 05:08 AM
Replies: 16,851
Views: 10,447,743
Posted By bmwrench
Do you think that's a complete motor? If so, I...

Do you think that's a complete motor? If so, I wouldn't mess with her-unless she told me to.
Forum: Airheads 03-16-2015, 03:15 PM
Replies: 10
Views: 481
Posted By bmwrench
The difference in lash between TDC and with the...

The difference in lash between TDC and with the opposite valve is open has been noted before-as long ago as the '70s!-but I've never seen one that dramatic. I think there's some thing amiss.
Forum: Airheads 03-15-2015, 07:15 PM
Replies: 5
Views: 441
Posted By bmwrench
I think they're all the same size. Check the...

I think they're all the same size. Check the online fiches for different models and present your suppliers with part numbers.
Forum: Airheads 03-12-2015, 07:16 PM
Replies: 48
Views: 1,714
Posted By bmwrench
8250 in top gear?

8250 in top gear?
Forum: Airheads 03-12-2015, 06:13 PM
Replies: 11
Views: 359
Posted By bmwrench
You also get more braking more your effort since...

You also get more braking more your effort since you're not pulling a cable with it's attendant loss. It's also a lot easier to check the fluid and for leaks. I recommend converting anything from...
Forum: Airheads 03-12-2015, 06:03 PM
Replies: 48
Views: 1,714
Posted By bmwrench
Nikasil lasts nearly forever, but it seems to me...

Nikasil lasts nearly forever, but it seems to me at least, hard on rings. For home and shop deglazing, you can rough the cylinder slightly with an aluminum oxide brush hone. For anything more...
Forum: Airheads 03-11-2015, 06:16 PM
Replies: 12
Views: 518
Posted By bmwrench
I've built several motors with '81-'84 R100...

I've built several motors with '81-'84 R100 cylinders and 8.2:1 pistons and stock R80 heads. One of them has been over 100K since then. BMW leaves a lot of room, so interference has not been a...
Forum: Airheads 03-10-2015, 07:11 PM
Replies: 141
Views: 6,363
Posted By bmwrench
I saw a Hannigan fairing grille in there. Any...

I saw a Hannigan fairing grille in there. Any other Hannigan parts?
Forum: Airheads 03-10-2015, 05:43 AM
Replies: 74
Views: 3,065
Posted By bmwrench
Yes, the cams are ground on a slight angle. This...

Yes, the cams are ground on a slight angle. This is common to every cam of this type.
Forum: Airheads 03-09-2015, 06:23 PM
Replies: 74
Views: 3,065
Posted By bmwrench
Good used lifters seem a safe bet, although...

Good used lifters seem a safe bet, although mechanical lore says that you should not.

I've seen lifters like the one pictured come out of several bikes in the last few years. AFAK, the bikes...
Forum: Airheads 03-09-2015, 11:32 AM
Replies: 15
Views: 546
Posted By bmwrench
When I want to remove one of those cans, I drill...

When I want to remove one of those cans, I drill a hole through it large enough to slip a drift through. This gives me all the leverage and grip I need.
Forum: Airheads 03-08-2015, 06:28 PM
Replies: 17
Views: 812
Posted By bmwrench
Can you describe the misfire?

Can you describe the misfire?
Forum: Airheads 03-08-2015, 06:26 PM
Replies: 1
Views: 167
Posted By bmwrench
Remove the lines from the master and replace them...

Remove the lines from the master and replace them with bleeders. If the ever is then rock hard and stays that way, the master is OK, and you can move on to other possibilities. You can also screw...
Forum: Airheads 03-08-2015, 06:19 PM
Replies: 13
Views: 636
Posted By bmwrench
Do you have the correct washer under the switch?

Do you have the correct washer under the switch?
Forum: Airheads 03-08-2015, 02:43 PM
Replies: 15
Views: 546
Posted By bmwrench
I like the idea of a stepped sleeve to extend the...

I like the idea of a stepped sleeve to extend the canister. I'd probably Loctite it in with sleeve retainer. A friend/customer brought in something yesterday I'd forgotten about: A Lockhart oil...
Forum: Airheads 03-08-2015, 09:48 AM
Replies: 12
Views: 649
Posted By bmwrench
A more important question may be how the bearings...

A more important question may be how the bearings and hubs were sealed during preparation for coating. If there's any doubt, they should be cleaned and greased.
Forum: Airheads 03-07-2015, 03:53 PM
Replies: 15
Views: 546
Posted By bmwrench
Yes, you'll need to change the center tube. ...

Yes, you'll need to change the center tube. You'll also need to replace the canister for the longer /7 type, used through the end of production. This will be challenging; I've done it, but it was...
Forum: Airheads 03-07-2015, 03:45 PM
Replies: 12
Views: 649
Posted By bmwrench
When bearings are compromised by heating, they...

When bearings are compromised by heating, they discolor, first by turning a straw yellow, then blue. If yours are still silver, they're fine.
Forum: Airheads 03-06-2015, 06:09 PM
Replies: 41
Views: 1,892
Posted By bmwrench
No. Even if it weren't dangerous, there'd be no...

No. Even if it weren't dangerous, there'd be no pleasure in riding it.
Forum: Airheads 03-04-2015, 04:45 PM
Replies: 34
Views: 1,804
Posted By bmwrench
What kind of lift do you have that causes you not...

What kind of lift do you have that causes you not to use the centerstand?
Forum: Airheads 03-01-2015, 10:35 AM
Replies: 3
Views: 379
Posted By bmwrench
More or less. You'll have to buy a monolever...

More or less. You'll have to buy a monolever exhaust system or fab something to get around the muffler bracket/footrest plate. The mono frame mounts a lot of its electrics under the fuel tank, so...
Forum: Airheads 02-28-2015, 02:34 PM
Replies: 2
Views: 425
Posted By bmwrench
There's a step just below the cylinder base on...

There's a step just below the cylinder base on the late cylinders which is slightly larger than yours. You'll need to have this turned, or remove a bit of metal from the case.
Forum: Airheads 02-28-2015, 02:30 PM
Replies: 3
Views: 293
Posted By bmwrench
Yes, but you'll have to fabricate an upper shock...

Yes, but you'll have to fabricate an upper shock mount for the monolever swingarm.
Forum: Airheads 02-27-2015, 07:21 AM
Replies: 27
Views: 1,126
Posted By bmwrench
Cutter does indeed know where the bodies are...

Cutter does indeed know where the bodies are buried. Unfortunately, there's virtually no one left from when he (and I) were dealing with BMWNA.
Forum: Airheads 02-26-2015, 08:01 PM
Replies: 14
Views: 564
Posted By bmwrench
Maxes 'fiche is nearly the same as the one...

Maxes 'fiche is nearly the same as the one dealers use, and they show no sign of stopping. BMW parts prices change daily-or so it seems-so an app makes little sense to me. If you have access to the...
Forum: Airheads 02-26-2015, 07:58 PM
Replies: 27
Views: 1,126
Posted By bmwrench
When I was dealer wrench, last at Bobs BMW, we...

When I was dealer wrench, last at Bobs BMW, we were still replacing wheels under the recall as late as 2008. Whatever dealer you choose, the service manager may have to speak with his rep at BMWNA. ...
Forum: Airheads 02-24-2015, 06:32 AM
Replies: 12
Views: 3,173
Posted By bmwrench
Cigars-Do I see an illustration on the packaging...

Cigars-Do I see an illustration on the packaging that indicates a ring expander should not be used?
Forum: Airheads 02-24-2015, 06:31 AM
Replies: 12
Views: 3,173
Posted By bmwrench
Look closely at the outside of the ring. One edge...

Look closely at the outside of the ring. One edge will have a bevel ground into it. This faces up.

If you are using the original iron bore cylinders, you'd be better served to use 3-piece oil...
Forum: Airheads 02-22-2015, 07:05 PM
Replies: 18
Views: 896
Posted By bmwrench
They are quieter with fewer discs, but this is...

They are quieter with fewer discs, but this is almost certainly holding you back. Tom Cutter once said in answer to a question about Supertrapps, "Coat the screws with anti-seize and torque them to...
Forum: Airheads 02-22-2015, 10:03 AM
Replies: 6
Views: 487
Posted By bmwrench
I'm not a fan of any post-"classic" K-Bike, but...

I'm not a fan of any post-"classic" K-Bike, but this puzzled me: "I test rode a r1200gs adventure a few years ago and really liked it. It was so tall that I was on the balls of my feet at a stop...
Forum: Airheads 02-21-2015, 04:55 PM
Replies: 5
Views: 455
Posted By bmwrench
How about putting '81 on R65 cylinders and heads...

How about putting '81 on R65 cylinders and heads on the R45? Those year R65s are quick and fun.
Forum: Airheads 02-21-2015, 04:53 PM
Replies: 34
Views: 1,673
Posted By bmwrench
What's wrong with being an immature jerk?

What's wrong with being an immature jerk?
Forum: Airheads 02-21-2015, 04:48 PM
Replies: 2
Views: 319
Posted By bmwrench
Tire rotation direction is usually based on the...

Tire rotation direction is usually based on the strength characteristics of the tire. The front needs to be able to tolerate braking and the rear, acceleration. Thus, if you are running a front...
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