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Author Topic: Rebuilding the "rat racer"...  (Read 2769 times)

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Offline KirkBurner

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Rebuilding the "rat racer"...
« on: January 18, 2014, 06:54:17 AM »
So.. here we are... 

today I ripped out the engine with some help from a friend



As you all can see its winter..

so.. as the bacholer I am.. Im taking this to the 8th floor apartment I live in.





My plan is to do a top-end rebuild
polish things down, and get rid of a few major leaks



I am a Novice at best... so hopefully I can get some educated feedback from you guys on how to fix this within 1st of may
« Last Edit: January 18, 2014, 06:59:00 AM by KirkBurner »
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Offline SOHC4 Cafe Racer Fan

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Re: Rebuilding the "rat racer"...
« Reply #1 on: January 18, 2014, 07:03:39 AM »
When is it not winter in Norway? ;)
That seat could use a new cover too.
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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 KirkBurner

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Re: Rebuilding the "rat racer"...
« Reply #2 on: January 18, 2014, 07:42:57 AM »
True true... But we should get bare roads in May I hope.

as for the seat.. Yeah I know, but thats part of the rat look.

But I have a plan for that aswell...getting a sewingmachine and use the same threadcolor as the frame... and use black marine vinly for the rest of it...
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Offline SOHC4 Cafe Racer Fan

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Re: Rebuilding the "rat racer"...
« Reply #3 on: January 18, 2014, 08:48:53 AM »
Good idea.  The seat has a good shape -- it just needs to be re-upholstered.

MAY!!?? It's 80 degrees today here.  That's 26.6 Celsius.
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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 iron_worker

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Re: Rebuilding the "rat racer"...
« Reply #4 on: January 18, 2014, 08:55:00 AM »
Is that an elevator? That would make things easy. I had to carry my bike up the stairs to my 3rd floor condo. ha

IW
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Offline Ewan 500K1

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Re: Rebuilding the "rat racer"...
« Reply #5 on: January 18, 2014, 09:11:57 AM »
that's a fancy toolbox for a novice  :o ;D ;D
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jings, crivens, help ma boab

500 four K1 cafe racer build thread at :
http://forums.sohc4.net/index.php?topic=100883.0

Offline kerryb

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Re: Rebuilding the "rat racer"...
« Reply #6 on: January 18, 2014, 07:21:00 PM »
Quote from: Ewan 500K1 on January 18, 2014, 09:11:57 AM
that's a fancy toolbox for a novice  :o ;D ;D
Remember...he's a bachelor, that's his dresser!
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intrigued by the wail...seduced by the scream.

Offline KirkBurner

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Re: Rebuilding the "rat racer"...
« Reply #7 on: January 19, 2014, 06:33:57 AM »
So I took off the cam cover

The camshaft has the markings "norris RX2 AJ #56" I tried googleing it and it didnt give much of a result..

anyone know what it is... or what a PO has done with it?

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Offline KirkBurner

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Re: Rebuilding the "rat racer"...
« Reply #8 on: January 23, 2014, 02:21:51 PM »
So as it is I was very lucky today... I have been searching the net to find specs on that carb..

Went and found some Norwegian Cafe guys...
and one of them he had a book he got way back in the days... He really made my day...

and there its was listed as a Hot Street/Roadrace cam ideal for 836 bigbore.

with a lift of .381"/.357" and a duration of 290/280 degrees...

so I ripped out the camshaft..





That last picture.... that where I spot the most wear.. is that considered alot?

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Offline KirkBurner

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Re: Rebuilding the "rat racer"...
« Reply #9 on: January 24, 2014, 02:42:23 PM »
teardown continues...

Finding only copper gaskets...

Boresize is 63,6...





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