BMW K bikes (Bricks)

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1Back to top Go down    84 K100 cafe build on Mon Apr 27, 2015 5:25 am

Phil63

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Hi guys,
Slowly working my way through resurrecting my old K bike, a few questions.
1. The fuel tank, has now been stripped of paint, there are two tabs, one on each side, to the rear, that I presume can be removed without issue? Also similar thing there is a flange further forward with a hole through it, it serves no purpose now without the fairing, can this flange be cut back to the line of the tank without compromising the tank, looks like it is sealed and I presume the tank would have a sealer ex factory?
2. I like the look of the factory exhaust although it is too long and doesn't give a a good look at the armless wheel of that side. I understand there are tuned headers that run into the exhaust, can I trim 10 inches off, re fab the end and weld it back on? Obviously looking for a little more sound as well.


Thanks
Phil
Australia

    

2Back to top Go down    Re: 84 K100 cafe build on Mon Apr 27, 2015 7:27 am

Holister

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The tabs at the rear of the tank are attachment points for the front end of the sidecovers. I'd say you could cut that off no problem.
The front "flange" as you call it would be the attachment point for the radiator cowl. I've seen that removed ok too. Here's an example.
If you had a radiator cowl there and you're no longer going to use it, I'll buy it off you.


__________________________________________________
1988 K100RT VIN No. 0094680
1989 K100RT VIN No. 0097367 (naked)
1996 K1100RS VIN No. 0451808
Fuel: 95 Octane
Engine Oil:Nulon Full Synthetic 15W50
Gear Box Oil: Nulon Synthetic 75W90
    

3Back to top Go down    Re: 84 K100 cafe build on Mon Apr 27, 2015 12:25 pm

Two Wheels Better

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So you want an exhaust collector that works, presumably you're not gunna use panniers, and can use just about any 2"/50mm upswept cannister you like? Here's your 'local' answer:

http://www.k100-forum.com/t8793-k100-collector

And here's a UK answer:

http://www.k100-forum.com/t7736-k-exhaust-collector

I am using this trick little Delkevic can with my Kiwi-made collector. Look on eBay US for $139.95...


It's perfectly Ok to cut the tabs off the back sides of the tank to the alu welds as I have done. If you're good with a grinder and don't get too close you can slice of the front side cover tabs as well.


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1987 K100RS, '93 Framed K11/K12 engine 'Big Block', '09 K1300GT, '07 K1200R, '04 R1150RT, '95 R100 Mystic, '77 R75/7.
Sniff...can you smell that? I think it might be bullsh*t.

    

4Back to top Go down    Re: 84 K100 cafe build on Thu Apr 30, 2015 2:05 pm

Dai

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@Two Wheels Better wrote:It's perfectly Ok to cut the tabs off the back sides of the tank to the alu welds as I have done. If you're good with a grinder and don't get too close you can slice of the front side cover tabs as well.
Or use an abrafile rather than a grinder as it's much more controllable.


__________________________________________________
'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

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