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gpzoduibh
Big Brick Rider
Joined: 10 Aug 2007
Posts: 70
Location: Co. Meath Ireland
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 Posted: Mon May 25, 2009 10:49 am Post subject: K series power house ? |
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Does anyone know what the differences would be in output in the various K bike engines , the Scorpion has a 1990 16v engine which I think is out of a K1 whats different from a K100 to K1 ? Has the latest version of the K1200 the highest power output is the RS a stronger engine than the LT say ? What final drive has the highest gearing ? (as the Scorpion with the smaller rear wheel redlines easily in top gear) If I am looking out for a crashed K to transplant whats my best powerplant , I know ill have to retain the 5 speed box but is a 1200 a direct bolt on , any swapmeisters out there ?
Thanks for your wisdom !
Bill
_________________
1995 Grinnall Scorpion III(1990 K100 16v motor)
2010 KTM 450 EXC
Moto Guzzi V50 powered hovercraft !
1989 K100RS (8V) special edition
1974 Yamaha DT360
1972 Sanglas 400 T
1980 Yamaha XS110-Watsonian Palma sidecar
1966 Bridgestone 175 dualtwin
1980 BMW R100RS
1979 Bultaco sherpa T 350
1979 Yamaha DT175MX
1990 Honda XR250R |
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Beachcomber
Flying Brick Rider
Joined: 04 Nov 2008
Posts: 350
Location: Redditch UK and Reichenau [ Saxony ]
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| Posted: Mon May 25, 2009 4:34 pm Post subject: |
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You will be limited to the K100 and K1100 range of powerplants for a transplant.
K1100 is the obvious choice with larger capacity. You will also have to select the correct fuel injection system to go with the engine.
Does your Grinnall have Paralever rear end?
Either way the RS range have the highest gearing.
I have access to several K100 and K1100's being broken - engines, gearboxes and rear ends - including some RS versions.
Based in the UK
TJ
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Beachcomber '93 K1100RS / '93 K1100LT and several K100's |
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Milton
Flying Brick Rider
Joined: 29 Feb 2008
Posts: 230
Location: Arvada, Colorado
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| Posted: Mon May 25, 2009 7:17 pm Post subject: |
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The highest geared final drive is from a RXXXXC (cruiser). I believe they are 2.54/1 and I don't believe they will mount right up but you can pull the ring and pinion gears out an swap them into your housing. Here is a link to some one on the list who did just that and got good results.
http://k11og.org/forum/viewtopic.php?t=4730&highlight=final+drive+cruiser
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Jethro Tull: Thick as a Brick!
1992 K100RS 48K. Dead for now.
1998 Triumph Tiger 43K->56K. Doin it in the dirt.
1978 Honda CB400T 32.5K. For my boys.
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Phil Marvin
Rider in the Sky
Joined: 03 Apr 2003
Posts: 1389
Location: El Paso, Texas, USA
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| Posted: Mon May 25, 2009 8:48 pm Post subject: Re: K series power house ? |
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| gpzoduibh wrote: | | What final drive has the highest gearing ? (as the Scorpion with the smaller rear wheel redlines easily in top gear) Bill |
Hi, Bill,
Both my '95 and '96 K1100LT's had 33/12 (2.75) rinal drive ratios. I believe that was the highest ratio which came in the K1100 bikes.
Slainte (I can't find the Irish alphabet nor accent marks),
Phil Marvin - El Paso, TX
Lived in Ireland (first Galway and later Roscrea, Co. Tipperary) in '77-78. Give my best to Paddy Maddock and Janet if you ever see them! |
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gpzoduibh
Big Brick Rider
Joined: 10 Aug 2007
Posts: 70
Location: Co. Meath Ireland
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| Posted: Tue May 26, 2009 5:50 am Post subject: |
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Thanks for your replies I was under the impression that the 1200 engine would bolt on to the older type 5 speed gearbox ? The Grinnall has a paralever rear end and uses the mounts on the gearbox so the swingarm system of the 1200 frame cant be used . I am thinking of looking out for a power plant with a bit more poke! so am trying to figure the best choice ?
Hello Phil ( Go n'eiri an bothair leat ) if I am out in Maddocks I will pass on your greetings I live near Enfield on the old N4 road to Galway but I need to order some BMW bits soon and I may call out to Bray as I have never been there!
Regards
Bill Black
_________________
1995 Grinnall Scorpion III(1990 K100 16v motor)
2010 KTM 450 EXC
Moto Guzzi V50 powered hovercraft !
1989 K100RS (8V) special edition
1974 Yamaha DT360
1972 Sanglas 400 T
1980 Yamaha XS110-Watsonian Palma sidecar
1966 Bridgestone 175 dualtwin
1980 BMW R100RS
1979 Bultaco sherpa T 350
1979 Yamaha DT175MX
1990 Honda XR250R |
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jhinds
Big Brick Rider
Joined: 19 May 2009
Posts: 57
Location: Central Texas
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gpzoduibh
Big Brick Rider
Joined: 10 Aug 2007
Posts: 70
Location: Co. Meath Ireland
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| Posted: Tue May 26, 2009 10:09 am Post subject: |
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I think the Grinnall turbo with 275 bhp and weighing 390 Kg/860 lb was a bit insane I think it was crashed and written off  my Scorpion has a 17 year old 100bhp K1 engine and I was going to look out for a newer donor engine from a later larger K to replace it but I am trying to figure what to look for and what will fit  over the last couple of years this site always give good advice and has plenty of knowledgable posters
Regards
Bill
_________________
1995 Grinnall Scorpion III(1990 K100 16v motor)
2010 KTM 450 EXC
Moto Guzzi V50 powered hovercraft !
1989 K100RS (8V) special edition
1974 Yamaha DT360
1972 Sanglas 400 T
1980 Yamaha XS110-Watsonian Palma sidecar
1966 Bridgestone 175 dualtwin
1980 BMW R100RS
1979 Bultaco sherpa T 350
1979 Yamaha DT175MX
1990 Honda XR250R |
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Phil Marvin
Rider in the Sky
Joined: 03 Apr 2003
Posts: 1389
Location: El Paso, Texas, USA
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| Posted: Tue May 26, 2009 11:30 pm Post subject: |
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Hi, Bill,
Never having done it myself, I have no firsthand knowledge, but one of the frequent posters of a year or two ago did put a K1200 engine in his K1100RS. I don't know the details, but it ran and, I understand, quite well. I believe he used the K1100 injection, exhaust, etc. I don't know if he used a K1200LT (100hp) or K1200RS (130hp) engine. But, it HAS been done and someone has to have some details.
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Ride Safe,
Phil Marvin in El Paso, TX
'94 K75A/3
'95 K75RTP |
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michaelcurrin
Flying Brick Rider
Joined: 01 Jun 2003
Posts: 329
Location: eastern NC
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| Posted: Wed May 27, 2009 8:22 am Post subject: |
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Bill,
PM me with your email address and I'll send what I know about putting a K12 in a K11, all second hand, am planning it for the future.
Mike
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Mike Currin
20 BMW R1250RS
93 BMW K1100RS / EML Speed 2000
06 Ducati ST3
67 Triumph 650 chopper |
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