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Join Date: Jun 2007
Location: North central Iowa
Posts: 47
R1100S tranny drain plug threads

Hi all. I'm new to this board, been lurking a while trying to learn everything I can about the R1100S. I've been riding an old R100S for several years. I finally found a nice reasonably priced R1100S. After putting about 600 mi on it I'm really glad I bought it. But.....

I'm changing all fluids, engine oil went OK, final drive went OK, but when I tried to pull the transmission drain plug I got a little worried. I made a wrench, got the plug "broke loose", and proceeded to unscrew the plug. Well, I wasn't able to use my fingers to remove it, I had to use the wrench on it all the way. The last few threads on the steel plug are shiny. The threads in the box look pretty good, will inspect more when it cools off. Question(s):
1. Should the tranny plug be "finger removable" after loosening with a wrench?
2. Any advice on the plug? Probably should buy a new/used one?
3. No crush washer, is that correct?
4. If no crush washer, do you use any sealant?
5. Is a new BMW plug about $500?

Thanks in advance.
Ed in Iowa.

Old 06-07-2007, 04:23 PM
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Ed
I believe the plug/case is set up as something of an interference fit, thus no crush washer. My approach was to clean the threads and screw in with the proper torque.
I spent some years in Ames, how are them Iowans treating you?
Jim
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Old 06-08-2007, 03:44 AM
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Jim, Thanks for the heads up. I'll try to clean the threads and quit worrying about it. Kind of seems like a stupid setup "interference fit".

The Iowans are treating me fine. I've lived here all my life (Humboldt area). It's not the best place for a motorcycle enthusiast as you know- too cold and flat.
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Old 06-08-2007, 03:50 AM
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Head this way sometime if you need a curve fix. Nice smorgasbord of bikes btw. I like a bit of variety myself.
Jim
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Old 06-08-2007, 03:58 AM
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I like to use pipe thread sealant (not the tape). Use it on all the drain plugs, helps prevent weeping and seeping
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R1100S in DDP occasionally with tremoleaner attached, '00 K12LT, '85K100RS I gotta sell, '83 Triumph TSS, Honda C70 passport and a few more old bikes, also more cars than I should have
Old 06-08-2007, 06:08 AM
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Just ordered a new plug from Gina's in Iowa City, $19.95, not bad for a BMW part.

Yeah, I like a variety when it comes to motorcycles. The 1100 is my first modern street bike and I'm loving it.

I'll use sealant on the plug, thanks.
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Old 06-08-2007, 08:39 AM
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BMW Roundel oh posh n balderdash!

WElcome Ed from Iowa!
The plug will have some drag simply because of the diameter of the thing, so, yes, a wrench is usyally needed. Makes for a messy proposition at best.
No crushwasher.
No thread seal, though if your superstitious, Teflon tape will do.
If you plug threads look good, cancel the order on the new plug.
That is all...
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Old 06-08-2007, 01:02 PM
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I'm going with the new plug, the first 4 or so threads on the old plug are deformed a little. The threads in the box look pretty good so I'm trying to save them with a new plug.

Thanks for the welcome, Rapid Dog. Pretty cool site here, I've learned tons already.
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Old 06-08-2007, 06:47 PM
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Welcome to the club. (#5 Is a bmw plug $500) Thats a good one, your going to fit right in here. BTW, nice stable of bikes.

Regards,
Lane
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Old 06-10-2007, 02:35 PM
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Hey Ed I am down in West Des Moines, but ride all over IA looking for curves. Any time yoiu would like to ride let me know, I can head that way. There are a few fun roads over in Western IA near Sioux City home to BAK BMW or I hear the roads in NE IA/WI/IL are fun and it's usually cooler up that way in the summer.

Indianola Bike night this Friday if you want to ride down, PM me. Take care and enjoy the S. Wow maybe there are 5 in IA now.
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2004 R1100SA Pacific Blue
Old 06-10-2007, 03:08 PM
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Hawkeyejohn,

Yeah, I've never seen another 1100S in Iowa. I've heard Indianola bike night is one of the best in Iowa, will have to ride down there some night but can't this Friday.

Yes, eastern Iowa is the place for riding. I've never tried western Iowa but I've been hunting there alot and there are some cool hills (Loess hills).

Anyway, if/when I get to Indianola bike night I'll try to let you know.

Gotts go spray some weeds...........

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07 R1200S
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78 Shovelhead chopper
13 KTM 350 EXCF
67 BSA Victor 441
Old 06-12-2007, 01:03 PM
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