K11 Owners Group

1960mog · Posted: Tue Jul 12, 2011 10:37 am Post subject: Fuel Pump Adapter

I followed the advice in this forum and bought a Purolator Facet FEP 2042
fuel pump for my K 11 LT from Ebay.
To close the gap between the pump and the original vibration damper
I made this aluminum adapter.
My LT is not running yet, so to test it I put the new pump in my K1.
I put over 500 Miles on it so far and no problems.
The original pre filter is a bi$%& to instal ,you can't control its position under the mounting tray in the tank. The pump sucked air at low fuel levels and stalled the bike, so I used the original basket type pre filter.
This eliminated the problem.

_________________
86 R80G/S
91 K1
93 K11LT

Jim · Posted: Tue Jul 12, 2011 12:10 pm Post subject:

The pre filter should be easy to install - it goes on the black outer part first - then you slide the adapter and pump in. If you put the adapter or pump in first, it is almost impossible to get the pre filter on.

Nice adapter, BTW.
_________________
Jim
1997 K1100LTSE 94,000 - still has gremlins!
1995 R100RT Classic 16,650 crashed - repaired!
1992 K75RTP 46,000

"We shall not all die, but we shall all be changed."

1960mog · Posted: Tue Jul 12, 2011 8:41 pm Post subject:

Hello Jim
Are you talking about the original BMW pre filter that hooks up to the
vibration damper?
I have this one installed right now.
The problem is with the pre filter that is delivered with the pump.
It's a long hose like filter that connects to the small diameter of the pump.
I assume the filter or part of it point upward and suck in air.
Next weekend I will put a picture of the filter in here.
_________________
86 R80G/S
91 K1
93 K11LT

rbm · Posted: Wed Jul 13, 2011 3:53 am Post subject:

Do you have a dimensioned drawing available online for this adapter? For the benefit of others who may want to duplicate your design. Thanks,
_________________
- Robert
1987 K75 @k75retro.blogspot.ca
2011 Moto Guzzi V7 Racer

SugarHillCTD · Posted: Wed Jul 13, 2011 6:10 am Post subject:

1960mog · Posted: Wed Jul 13, 2011 11:00 am Post subject:

Sorry!
All I have is a vernier caliper and a old lathe.
I have to make a second adapter, and I will write down the dimensions.
In a nutshell.
The inner diam. of the adapter is the outer diam. of the pump
minus a hair, so the adapter will clamp the pump after it is split.
The outer diam. and the two humps are the same than the original pump.
The length is the same then the vibration damper.

I hope that helps for now.
_________________
86 R80G/S
91 K1
93 K11LT

nickw · Posted: Wed Jul 13, 2011 4:29 pm Post subject: pump adaptor manufacturing?

If there is interest, I can set up a local machinist to make some. I also have a lathe myself and can make a few if anyone is stuck. Once the drawing is available, I will work up a cost.

I will distribute them at cost plus shipping for anyone in KOG.

Nickw
_________________
"It's not what people know, it's that they know so much that just ain't so!" (Apologies to Will Rogers)
93 K1100LT
(2) 79 Suzuki GS850's (In limbo)
65 Triumph TR6S/C ( sold)
2009 Suzuki SV650
2009 Suzuki DL650

SugarHillCTD · Posted: Wed Jul 13, 2011 8:05 pm Post subject:

Might be interest on this forum.

Just bought a new pump from BeemerBoneyard. OUCH.

If anyone is interested, post on this thread.

Thanks NickW and 1960mog
_________________
John & Cathy

'92 K100RS4V Pearl White SOLD
'04 K1200GT
IBA Several-SS1k, BBG, 50CC NYC to S.F.

lee richter · Posted: Wed Jul 13, 2011 9:03 pm Post subject:

Count me in!
_________________
Lee Richter
Orlando, FL
I like flying, HIGH or low, Wings or Not
182 Texas Tail Dragger
'39 J3 Cub
2000 HD Soft Tail Sold
2002 R1150R
1994 K1100LT

Ernie-NH · Posted: Wed Jul 13, 2011 10:07 pm Post subject:

Hi guys....

Hey.... I'm in if your whipping these up for sale !!

Best regards........// Ernie in NH
_________________
AMA,, American Deaf Bikers
Airhead Beemers Club
'11 G650gs
'95 K1100LT
'76 R100/7

DLBass · Posted: Mon Jul 18, 2011 6:13 am Post subject:

I'm in for one too if you decide to go that route.

David
_________________
There is only now, yesterday is gone and is unchangeable, tomorrow is uncertain. Live in the moment.

1960mog · Posted: Mon Jul 18, 2011 12:28 pm Post subject:

Hello
Here is a more simple way to make the fuel pump adapter.
I replaced the split design with a set screw.
The inside diam. must not be as precise as in the split design.
I am concerned about the single point of pressure on the pump body by the set screw.
Any body knows the internals of this pumps and the best location for the set screw?

Here is the dimensioned drawing.
Sorry it's so small.
The split and the set screw are not included in this drawing.
It's done in ACAD 2009 and exported as a bitmap.
How can I make this bigger?

_________________
86 R80G/S
91 K1
93 K11LT

Ernie-NH · Posted: Wed Aug 10, 2011 8:14 am Post subject:

Good morning "....mog"

Have you found a way to better reproduce your drawing so that the rest of us can read it ?? Perhaps if you made a hand-sketch with large clear dimensions and then simply took a photo for pasting here on the forum, we could all then decide how best to make it from individual resources... Give it a try, since many of us would like to fab up an alternative pump solution as you did.

Best regards..........// Ernie in NH
_________________
AMA,, American Deaf Bikers
Airhead Beemers Club
'11 G650gs
'95 K1100LT
'76 R100/7

1960mog · Posted: Wed Aug 10, 2011 10:39 am Post subject:

I enlarged the writing in the drawing.
I hope it is readable now.

_________________
86 R80G/S
91 K1
93 K11LT

Ernie-NH · Posted: Wed Aug 10, 2011 11:33 am Post subject:

Hey "...mog"...

That's terrific !! THANK YOU !! Now to get started on the fab asap !

Best regards......// Ernie in NH
_________________
AMA,, American Deaf Bikers
Airhead Beemers Club
'11 G650gs
'95 K1100LT
'76 R100/7

awshucks · Joined: 08 May 2011 Posts: 9 Location: Arkansas

I had this same idea about two months ago, but was going to 'shrink' fit them on pump.

Then I found these at Euro Motoelectric:

BMW K and Ducati Fuel Pump Foam Adapter - used for adapting FP-231KIT 37mm Diameter pump to 52mm rubber vibration damper Flexible Fuel Hose for In-Tank Submersion 5/16" or 7mm ID / 16 13 1 455 350
Our Price: $14.00

43 mm $9.00

I couldn't compete w/ that price.
_________________
'81 R 100T/S
'85 K 100 RS
gone but not forgotten:
'74 R 90S
'77 R 100S
'80 R 100S

Mystic Red · Posted: Sun Aug 14, 2011 11:22 am Post subject:

awshucks, is this it?
_________________
Scott Hespelt, '94 K11LT
K11 OG #466

Jim · Posted: Sun Aug 14, 2011 11:30 am Post subject:

Thanks for the info. They have some good prices - hadn't run across that website before.

http://www.euromotoelectrics.com/BMW_K_Fuel_Pump_Foam_Adaptor_16_12_14_61_576_p/fp-576foam.htm
_________________
Jim
1997 K1100LTSE 94,000 - still has gremlins!
1995 R100RT Classic 16,650 crashed - repaired!
1992 K75RTP 46,000

"We shall not all die, but we shall all be changed."

awshucks · Joined: 08 May 2011 Posts: 9 Location: Arkansas