Author Topic: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"  (Read 189429 times)

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Offline bwaller

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #825 on: April 15, 2017, 04:14:18 AM »
Same same, as well the locating pin for the shift fork on the drum.

Offline SOHC4 Cafe Racer Fan

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #826 on: April 15, 2017, 06:42:55 AM »
Bummer. It must have escaped custody from your CSI bag and tag.
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline BLAC

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #827 on: April 15, 2017, 11:23:50 AM »
I think I left it in there on accident when I mailed it out to be cleaned. It might have jumped out during shipment... alas, I will sacrifice a drill bit for the cause :)
If you can't fix it with a hammer, it's an electrical problem... If it's an electrical problem, it's Cal's problem.

*2005 Yamaha R6 (sold)
*2014 Ducati Streetfighter 848 (sold)
*2014 BMW S1000RR (sold)
*2010 Ducati Streetfighter S
*1978 CB550 Restomod Build
*1974 CB550 Monoshock build
http://forums.sohc4.net/index.php/topic,154614.0.html

Offline BLAC

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #828 on: April 15, 2017, 11:50:52 AM »
Every bearing is measuring .0015 so I'll be reusing them


Lubed with some redline:


So fresh, so clean  8)


Stopping point last night due to the runaway dowel


« Last Edit: April 15, 2017, 11:59:36 AM by BLAC »
If you can't fix it with a hammer, it's an electrical problem... If it's an electrical problem, it's Cal's problem.

*2005 Yamaha R6 (sold)
*2014 Ducati Streetfighter 848 (sold)
*2014 BMW S1000RR (sold)
*2010 Ducati Streetfighter S
*1978 CB550 Restomod Build
*1974 CB550 Monoshock build
http://forums.sohc4.net/index.php/topic,154614.0.html

Offline BLAC

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #829 on: April 16, 2017, 02:48:09 AM »
So getting this put back together was a tricky little pain in the ass until I figured out how to do it  ::)



Rebuild the caliper with Geoffrey's piston and installed it.  I actually put the caliper in a mill and flattened the face. A previous owner hammered on it to get the piston out so I smoothed it out so it will look nice once it's powder coated. Oh I used the DOW vacuum grease on the backs of both pads.


Rods installed, torqued to 18.8lbs
If you can't fix it with a hammer, it's an electrical problem... If it's an electrical problem, it's Cal's problem.

*2005 Yamaha R6 (sold)
*2014 Ducati Streetfighter 848 (sold)
*2014 BMW S1000RR (sold)
*2010 Ducati Streetfighter S
*1978 CB550 Restomod Build
*1974 CB550 Monoshock build
http://forums.sohc4.net/index.php/topic,154614.0.html

Offline MRieck

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #830 on: April 16, 2017, 06:22:07 AM »
You want to resurface that brake disc. Send it Tom at Truedisk and have him Blanchard grind it.

Also, you might want to apply a decent layer of assembly lube on those "hard parts" to insure they're slick and protected when turning them, and for first start. It's just insurance against galling and reduces friction as you go.
I agree with that.
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Offline Godffery

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #831 on: April 16, 2017, 07:11:25 AM »
You want to resurface that brake disc. Send it Tom at Truedisk and have him Blanchard grind it.


 I can also provide Rotor service for that and at nearly half the weight... http://www.vinmoto.org/gallery/v/VinMoto-Garage/album03/Godfferys-Garage-123/Parts+and+service/

Offline BLAC

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #832 on: April 16, 2017, 12:43:11 PM »
You want to resurface that brake disc. Send it Tom at Truedisk and have him Blanchard grind it.

Also, you might want to apply a decent layer of assembly lube on those "hard parts" to insure they're slick and protected when turning them, and for first start. It's just insurance against galling and reduces friction as you go.

Yep, the rotor is a little nasty and I was planning on a Blanchard grind. 

I have a pretty good amount of Redline assembly lube  on all of the bearings and all of the shafts where two pieces meet.  She is pretty slicked up when you try to move or rotate anything.  The only parts that don't have assembly lube on them are the actually gears, rods (excluding the ends) and the crank weights.  Should I be more liberal with it and just get a little bit on everything?
If you can't fix it with a hammer, it's an electrical problem... If it's an electrical problem, it's Cal's problem.

*2005 Yamaha R6 (sold)
*2014 Ducati Streetfighter 848 (sold)
*2014 BMW S1000RR (sold)
*2010 Ducati Streetfighter S
*1978 CB550 Restomod Build
*1974 CB550 Monoshock build
http://forums.sohc4.net/index.php/topic,154614.0.html

Offline BLAC

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #833 on: April 16, 2017, 12:44:52 PM »
You want to resurface that brake disc. Send it Tom at Truedisk and have him Blanchard grind it.

Also, you might want to apply a decent layer of assembly lube on those "hard parts" to insure they're slick and protected when turning them, and for first start. It's just insurance against galling and reduces friction as you go.
I agree with that.

Do you put assembly lube on the primary chain, and the transmission gears?
If you can't fix it with a hammer, it's an electrical problem... If it's an electrical problem, it's Cal's problem.

*2005 Yamaha R6 (sold)
*2014 Ducati Streetfighter 848 (sold)
*2014 BMW S1000RR (sold)
*2010 Ducati Streetfighter S
*1978 CB550 Restomod Build
*1974 CB550 Monoshock build
http://forums.sohc4.net/index.php/topic,154614.0.html

Offline Medyo Bastos

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1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #834 on: April 16, 2017, 12:49:53 PM »
I would soak chains in oil overnight before assembly


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« Last Edit: April 16, 2017, 12:51:28 PM by Medyo Bastos »

Offline BLAC

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #835 on: April 16, 2017, 01:39:31 PM »
I wet everything during an initial assembly. Gear teeth get brushed, surfaces, lobes, etc. You name it; if it's steel it gets lubed because oil is not present until you pump it up and it takes several seconds to literally get everything wet the first time.

Sounds good, I'll give everything a good lube!

If you can't fix it with a hammer, it's an electrical problem... If it's an electrical problem, it's Cal's problem.

*2005 Yamaha R6 (sold)
*2014 Ducati Streetfighter 848 (sold)
*2014 BMW S1000RR (sold)
*2010 Ducati Streetfighter S
*1978 CB550 Restomod Build
*1974 CB550 Monoshock build
http://forums.sohc4.net/index.php/topic,154614.0.html

Offline riverfever

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #836 on: April 16, 2017, 04:54:39 PM »
Pretty exciting! Everything looks so clean.
http://forums.sohc4.net/index.php?topic=127186.0

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Offline BLAC

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #837 on: April 18, 2017, 06:56:59 PM »
There are really cool people hidden around LA and it seems that my girlfriends grandpa (who is letting me use his shop) knows all of them  :P

So I lost a pin/dowel while assembling my motor, instead of letting me buy another one, or cutting up a drill bit, he says "lets go see Bruce".

Bruce turns out to be one of the most talented gear heads I have ever met. He has built cars from the ground up (including the nuts, bolts, engine castings, body panels,  EVERYTHING). Jay Leno actually bought one of his project.  Anyway, we head over to a 10' lathe tucking in a corner of his shop and turns out a piece for me, chamfered edge and all. 

Then he gives me a tour of the rest of his shop (attache to but 3x bigger than his house) where he has 60's 911s's, classic mini cooper race cars, autographed photos of just about every famous race car driver back to the 30's, every dash plaque (40+) from Ken Miles race cars, and his current project, a built Cosworth powered Lotus Seven.  His goal is to make it as light as possible, this includes everything from titanium suspension coils, a custom magnesium bell housing, titanium hardware for his 3 piece wheels and every nut and bolt he has remade out of titanium.  He hollowed out the hex end to take away material and hollowed the shafts of the bolts that are not "high torque".. he handed me one and I could hardly feel the 3" bolt resting in my hand.  The car is down to 900lbs..

I feel like such an inadequate hack now...
« Last Edit: April 18, 2017, 07:02:07 PM by BLAC »
If you can't fix it with a hammer, it's an electrical problem... If it's an electrical problem, it's Cal's problem.

*2005 Yamaha R6 (sold)
*2014 Ducati Streetfighter 848 (sold)
*2014 BMW S1000RR (sold)
*2010 Ducati Streetfighter S
*1978 CB550 Restomod Build
*1974 CB550 Monoshock build
http://forums.sohc4.net/index.php/topic,154614.0.html

Offline SOHC4 Cafe Racer Fan

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #838 on: April 18, 2017, 08:01:45 PM »
Your girlfriend's grandfather is one cool guy.  It's no surprise he has cool friends to call his own. 

So cool for you to meet guys like Bruce and learn a thing or two from them.
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline Medyo Bastos

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #839 on: April 18, 2017, 08:07:08 PM »
you must be one cool kat to know a cool guy like him ;D

Offline BLAC

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #840 on: April 18, 2017, 08:19:29 PM »
Your girlfriend's grandfather is one cool guy.  It's no surprise he has cool friends to call his own. 

So cool for you to meet guys like Bruce and learn a thing or two from them.

I told him that I would love to just hang around his garage and lend a helping hand if he ever wanted one just to watch and learn.  We'll see if he takes me up on the offer.  I would love to work on the old 911s 😩
If you can't fix it with a hammer, it's an electrical problem... If it's an electrical problem, it's Cal's problem.

*2005 Yamaha R6 (sold)
*2014 Ducati Streetfighter 848 (sold)
*2014 BMW S1000RR (sold)
*2010 Ducati Streetfighter S
*1978 CB550 Restomod Build
*1974 CB550 Monoshock build
http://forums.sohc4.net/index.php/topic,154614.0.html

Offline BLAC

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #841 on: April 18, 2017, 08:20:22 PM »
you must be one cool kat to know a cool guy like him ;D

I'm no more than 65% cool cat  :P
If you can't fix it with a hammer, it's an electrical problem... If it's an electrical problem, it's Cal's problem.

*2005 Yamaha R6 (sold)
*2014 Ducati Streetfighter 848 (sold)
*2014 BMW S1000RR (sold)
*2010 Ducati Streetfighter S
*1978 CB550 Restomod Build
*1974 CB550 Monoshock build
http://forums.sohc4.net/index.php/topic,154614.0.html

Offline BLAC

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #842 on: April 18, 2017, 08:59:07 PM »
you must be one cool kat to know a cool guy like him ;D

I'm no more than 65% cool cat  :P
And let's be honest, your girlfriend is just using you to get to know me...  8) :D ;D

The long con! That betch!
If you can't fix it with a hammer, it's an electrical problem... If it's an electrical problem, it's Cal's problem.

*2005 Yamaha R6 (sold)
*2014 Ducati Streetfighter 848 (sold)
*2014 BMW S1000RR (sold)
*2010 Ducati Streetfighter S
*1978 CB550 Restomod Build
*1974 CB550 Monoshock build
http://forums.sohc4.net/index.php/topic,154614.0.html

Offline 540nova

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #843 on: April 19, 2017, 08:16:56 AM »
Whole lotta cool going on.


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Offline 754

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #844 on: April 19, 2017, 05:11:28 PM »
 A long time ago I wanted to be a bit like Bruce. I read a story about a guy like that in Cycle or Cycle World. The guy wrote a coloumn for the mag, and he needed an obsolete shaft or pin made, and he knew a guy like that in Hollywood I think.., and he went there and the guy made it, I think he even heat treated it and finish ground it to size.  He did it for fun.
 I always remembered that the guy wrote , he charges  40 bucks an hour, he picks the hour.. And sometimes while I had my shop I thought like that..(probably to my detriment).
 Anyway I ended up with. a fair amount of equipment and was able to amuse myself and others, but unfortunately....ended up in a position where my machines are not set up and I am able to use them when I need to...major crimp in the overall plan.
 Also we live in a smaller centre where shops dont have a lot of heat treating ir precision grinding capabilities... Unlike the LA Basin where Bruce and the other fellow were.
 Luckily I have a buddy that lets me use his shop sometimes to knock off the odd part, or mod something.. He is well equipped but no grinding or heat treating again. Fabulous welding and metal forming capabilty though.
 That is my story...you are lucky to meet Bruce..
Maker of the WELDLESS 750 Frame Kit
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Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline BLAC

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #845 on: April 23, 2017, 09:44:16 PM »
Well... I did have a roller yesterday, I think I'm going backwards...


I spent what felt like an eternity reshaping and remaking the stock passenger foot peg mounts to use for my rear sets.  I removed the pinch weld and made them pretty.  It took forever and was a massive pain in the ass (I actually threw them into the trash twice) but I am proud of how they turned out  ;D




Not sure how to get it perfectly accurate until I get the rearsets in, so they are just tacked for now.



Done for tonight!


« Last Edit: April 23, 2017, 09:47:02 PM by BLAC »
If you can't fix it with a hammer, it's an electrical problem... If it's an electrical problem, it's Cal's problem.

*2005 Yamaha R6 (sold)
*2014 Ducati Streetfighter 848 (sold)
*2014 BMW S1000RR (sold)
*2010 Ducati Streetfighter S
*1978 CB550 Restomod Build
*1974 CB550 Monoshock build
http://forums.sohc4.net/index.php/topic,154614.0.html

Offline SOHC4 Cafe Racer Fan

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #846 on: April 23, 2017, 10:02:50 PM »
Are you planning on keeping the center stand (saw that the attachment points are still on the frame)?
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline BLAC

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #847 on: April 23, 2017, 10:07:25 PM »
Are you planning on keeping the center stand (saw that the attachment points are still on the frame)?

Nope, I'm going to scrap it.  I will cut out all of those mounts once I do some homework and make sure none of them are needed for anything else beside the center stand
If you can't fix it with a hammer, it's an electrical problem... If it's an electrical problem, it's Cal's problem.

*2005 Yamaha R6 (sold)
*2014 Ducati Streetfighter 848 (sold)
*2014 BMW S1000RR (sold)
*2010 Ducati Streetfighter S
*1978 CB550 Restomod Build
*1974 CB550 Monoshock build
http://forums.sohc4.net/index.php/topic,154614.0.html

Offline RAFster122s

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #848 on: April 23, 2017, 10:48:10 PM »
You could setup an attachment to use those mount points for a lifting point for doing some work on the bike.  Tne centerstand while not often on the custom bikes it is very useful for pulling a tire off the front or to other work like that, or a bit of  bracing with a prop block and you can even pull the rear wheel.
I guess that is when you pull out the cell phone and call AMA roadside service for a tow, or other company for assist if too far from home to get it back to a work area.

Nice work and very nice to have connections, network of friends who can do things.
David- back in the desert SW!

Offline JoeCooley

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Re: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"
« Reply #849 on: April 24, 2017, 03:00:51 PM »
Haha nice selfie bro!
Joe in San Diego - Quick Cyles
78 CB750K 836cc Highway Racer - http://forums.sohc4.net/index.php/topic,162264.0.html

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