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Grunter
Flying Brick Rider
Joined: 30 Sep 2015
Posts: 368
Location: North East England
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 Posted: Sat Aug 13, 2022 4:32 am Post subject: Fuel Filter transplant |
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I bought a running wreck of a R1100TSS following the demise of my K75 and set about restoring it back to the land of the living. The 1st thing I did was transplant the fuel filter from inside the tank to the outside so when the time came to replace it I did not have to take the tank off and open it up to change the filter. This is common modification especially with the R1100/1150RT bikes.
Now I have quite large hands and replacing the filter on my newly acquired K1100lt will be a real struggle because getting my hand into the tank to unscrew the clips is virtually impossible. Has anyone else tried this and if so where did they locate the filter on the bike?
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1997 K1100LT
1994 R1100RS |
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Scott_Anderson
Site Admin
Joined: 05 Sep 2006
Posts: 3119
Location: Central Iowa, USA
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| Posted: Sat Aug 13, 2022 6:52 am Post subject: |
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Like you I've done this on my R...
However I've not done it on my K.
There is a drawback to placing the filter external to the tank on the K, and that is exposing it to the heat of the engine/radiator air flow.(don't have this on the R).
Left side, in-line between the tank discharge and the fuel rail inlet would be the most logical placement.
There's not a lot of room there if you still have the air-flow "baffle" media.
However, on that note, you can run fuel line to wherever you want to locate filter and back to the rail.
Makes for an interesting conversation......
Food for thought, on the subject of hot fuel and hot tank, there are options to help mitigate the heat issue.
1: "Johnny Blanket" treatment of the area under the fuel tank.
2: install a remote fuel "radiator/cooler" to help reduce the temperature of the fuel.
The 2nd option also allows for installation of an external filter....
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Ride safe.
1995 K1100LT 0302044
1997 R1100RT ZC62149
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
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"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.) |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10086
Location: Bumf***, WA
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| Posted: Sat Aug 13, 2022 1:42 pm Post subject: |
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Are you trying to get a hand IN the tank with a screwdriver? I use a long screwdriver and a bit driver with an extension.
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93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
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Grunter
Flying Brick Rider
Joined: 30 Sep 2015
Posts: 368
Location: North East England
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| Posted: Sun Aug 14, 2022 3:25 pm Post subject: |
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| Flying Duck wrote: | | Are you trying to get a hand IN the tank with a screwdriver? I use a long screwdriver and a bit driver with an extension. |
No I know the foibles of getting the filter out and back in again but with hands that take extra large size gloves, it is a struggle and usually end up taking the skin off one or more knuckles in the process.
That itself is not a serious problem, but I since my last 'K' bike, due to a medical problem, my doctor has put me on a medication which slows down the clotting procedure so. if I cut myself, even slightly it can get a bit messy. Plus 'She who must be obeyed' doesn't like blood dripping all over the place
After seeing how easy it was to remotely locate the filter on my R1100RS I thought why not do the same on a K1100. That itself will be easier to do on a K. Plus I had intended to replace the internal tank hoses anyway, after 25 years they have had a good life..
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1997 K1100LT
1994 R1100RS |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10086
Location: Bumf***, WA
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| Posted: Mon Aug 15, 2022 12:33 am Post subject: |
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Try Eliquis. Before he passed, my dad was on Warfarin or whatever and bruised or bled like crazy at the slightest bump/nick. I've been on Eliquis for several years now and when I nick a knuckle (as I do often when dinking with my bikes) it bleeds no more or less than before. Could be just dumb luck. YMMV.
Back to K bikes: When I got my hands on a 1986 turbo'd K75C back in 2014 I was quite dismayed to find that some previous owner/mechanic had seen fit to externalize both the fuel pump and filter. It took quite a bit of work but I was able to get it back "normal" with both inside of the tank. From what I understand, having the fuel pump submerged in fuel is what helps keep it cool and operating well.
Based upon that my suggestion would be for you just to externalize the filter and not the pump too.
JM02.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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Grunter
Flying Brick Rider
Joined: 30 Sep 2015
Posts: 368
Location: North East England
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| Posted: Mon Aug 15, 2022 6:44 am Post subject: |
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No I had not considered moving the pump as well that would be a step too far.
I was looking at the fairing outside in front of the radiator and it should be possible to 'invent' some sort of bracket where the cool air will hit the filter first, but not obstruct the flow of air through the radiator.
I don't know at present.
Considering the filter where it is now on my R1100RS the engine gets very warm as well but so fat there have been no problems with the fuel boiling. It just needs thinking about. Thanks for your input anyway it is food for thought.
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1997 K1100LT
1994 R1100RS |
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Grunter
Flying Brick Rider
Joined: 30 Sep 2015
Posts: 368
Location: North East England
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| Posted: Tue Aug 16, 2022 6:40 pm Post subject: |
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Having brought the 'new to me' KLT home yesterday, I have had a quick look where I could transplant the fuel filter and there seems to be more than enough room in front of the box where the radio is fitted and could be securely fastened to the outside of the radio box with a pair of good cable ties.
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1997 K1100LT
1994 R1100RS |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10086
Location: Bumf***, WA
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| Posted: Tue Aug 16, 2022 11:23 pm Post subject: |
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Your other option would be to teach SWMBO how to change the fuel filter. 
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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Grunter
Flying Brick Rider
Joined: 30 Sep 2015
Posts: 368
Location: North East England
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| Posted: Wed Aug 17, 2022 2:48 am Post subject: |
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| Flying Duck wrote: | | Your other option would be to teach SWMBO how to change the fuel filter. |
Not an option! She would rather personally remove her teeth without anaesthetic whilst walking on a bed of nails.
She hates bikes and will not even sit on one.
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1997 K1100LT
1994 R1100RS |
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Al.
Flying Brick Rider
Joined: 28 Oct 2005
Posts: 383
Location: West of Ireland
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| Posted: Sat Sep 17, 2022 5:19 pm Post subject: |
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Maybe this is a dumb comment, but I presume that you take off the filler cap first........
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1994 K1100 LTSE + Blackbird |
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Grunter
Flying Brick Rider
Joined: 30 Sep 2015
Posts: 368
Location: North East England
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| Posted: Sun Sep 18, 2022 1:20 pm Post subject: |
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| Al. wrote: | | Maybe this is a dumb comment, but I presume that you take off the filler cap first........ |
Does that comment warrant a reply?
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1997 K1100LT
1994 R1100RS |
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