K11 Owners Group

Flying Duck

Very nice. From low mile bike. No dings in fins. Was saving it to put in one of my bikes but decided it's not worth the effort for the climate I live in.

$200 shipped to continental US.
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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)
Buy parts HERE

SugarHillCTD · Posted: Tue Sep 15, 2009 10:36 am Post subject:

I have seen posts about installing a 3 core in a bike similar to mine but never read about it in detail.

Much to be modified to make it work?

I'm interested- Cathy is probably tired of my complaints.

John
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John & Cathy

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

Flying Duck · Posted: Tue Sep 15, 2009 11:25 am Post subject:

Its pretty straightforward. Cut off the lower left mounting bracket on the fan. There's several posts on others who have done it.
_________________
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

RAL88 · Posted: Tue Sep 15, 2009 11:52 am Post subject:

Hey John,

I will pm you when I get home tonight a little write up of what I did when I switched mine out. Most people have to cut a little bit off the fan motor cover so it doesn't hit the airbox but for some reason I didn't have to do that.
_________________
Rich

"If it ain't broke, take it apart and make it work better"
*************
'96' K1100LT-SE
'97' R850GS-R

Jim · Posted: Tue Sep 15, 2009 12:24 pm Post subject:

John - Larry (lrome) has a good write up - for the LT, I think. You don't have to cut anything (on the LT), just move the brackets on the radiator - the RS might be different...
_________________
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."

sdaniel · Posted: Tue Sep 15, 2009 1:14 pm Post subject:

I thought one fellow said it didn't lower the operation temperature at all. That was due to the thermostat.
_________________
1993 K1100LT

All that is necessary for the triumph of evil is for good men to do nothing.

Flying Duck · Posted: Tue Sep 15, 2009 1:53 pm Post subject:

sdaniel · Posted: Tue Sep 15, 2009 2:07 pm Post subject:

Jim · Posted: Tue Sep 15, 2009 4:07 pm Post subject:

It won't heat up as fast - and it will cool down faster than a two core. That's my experience. If you have a fan switch and can run the fan manually or automatically, it hopefully won't heat up past the midpoint on the gauge.
_________________
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."

Jim · Posted: Mon Jan 11, 2010 7:56 pm Post subject: cold weather and three core

Took the bike out for a ride yesterday - first time I've had it out in sub 40º F weather since I installed the three core. It never got up to what I consider operating temperature - and the mpg suffered. Seemed to be running at about 150º - 160º - I think it probably wants minimum 185º. Now I need to add a set of shutters like the old Volvo's used to have...

Actually, if I end up riding it much, I'll probably partially block the radiator with some corrugated plastic signboard.
_________________
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."

Scott_Anderson · Posted: Tue Jan 12, 2010 12:11 am Post subject:

Jim, so is your thermostat also sticking open? I thougt that was more the temp "controller" for the water temp, more than the radiator.
The rad only cools the water once the t-stat is open? or am I missing something.
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Ride safe.

1997 K1100LT 0302488
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1995 K1100LT 0302044(R.I.P.)
1997 R1100RT ZC62149(sold)

Jim · Posted: Tue Jan 12, 2010 1:25 am Post subject: three core radiator

Scott - I don't think it is. Looks like there is some kind of bypass on the cooling system - like not all the coolant has to pass through the thermostat as it circulates. I suppose the thermostat could have failed...
_________________
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."