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Author Topic: 1975 CB550K1 - Stock-ish Restomod - More Mods  (Read 148891 times)

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Offline SOHC4 Cafe Racer Fan

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #100 on: May 27, 2014, 07:17:50 AM »
Quote from: Chaser60 on May 27, 2014, 06:39:07 AM
Great paint work.  Love the color.   I now find myself wishing for the dual front discs.   Love that look and I am sure the breaking performance is tight also.    I may need to start hunting for rotor, calipers and mounting gear.   Will back read this build to see how you attacked that.

Most of the front disc hardware came from Godffrey: calipers and mounts, drilled and thinned rotors and phenolic pistons, and a modified speedo drive plate. The discs were countersunk so longer bolts were not needed. Everything bolted in, but the alignment took some work on the right side caliper.

Braking performance with EBC pads is good. Not doubled but much improved.
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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 bwaller

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #101 on: May 27, 2014, 08:00:50 AM »
There you go, great looking bike with upgrades but still instantly recognised as a CB550. Nice job.
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Offline onetruepunk87

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #102 on: May 27, 2014, 09:54:58 AM »
Love how this turned out, I've got a similar vision for my CB500 build. I have an extra brake rotor for mine already, this makes me want to grab an extra set of brake parts and some 550 forks.
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Offline SOHC4 Cafe Racer Fan

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #103 on: May 27, 2014, 04:28:30 PM »
Thanks, guys.  Onetrue, Godffrey supplies very nice reconditioned parts. My brake calipers looked brand new until some brake fluid took some paint off. One of the reasons I love powdercoating.
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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 SOHC4 Cafe Racer Fan

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #104 on: June 10, 2014, 04:24:00 PM »
I need to swap out the idle jet, as the 550 is overly prone to stalling at idle.  I also need a new oil sump gasket, as a leak has developed below.   >:(
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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 Blackfin5

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #105 on: June 12, 2014, 06:27:40 AM »
Original, but upgraded - very nicely done.  It looks like you just uncrated a 2014 CB550.  I like it.  Let me know if you ever ride through the S.D. back country.
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Offline SOHC4 Cafe Racer Fan

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #106 on: June 12, 2014, 06:49:03 AM »
Quote from: Blackfin5 on June 12, 2014, 06:27:40 AM
Original, but upgraded - very nicely done.  It looks like you just uncrated a 2014 CB550.  I like it.  Let me know if you ever ride through the S.D. back country.

Thanks. I wanted the bike to retain its stock character since my other projects embrace more modern upgrades. I've been up Palomar and Julian a few times. Great roads.
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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 bwaller

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #107 on: June 12, 2014, 08:35:14 AM »
Re the oil pan o-ring, I have found those new Honda O-rings have become thinner over time (valve cover, breather cover, oil pan etc.) I bought some replacements from 4into1.com and found the cross section is thicker. I have always been true to Mother Honda for OEM replacement parts but I was about to make my own cover O-rings when I discovered these guys. Their prices seem good and they shipped quickly.
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Offline SOHC4 Cafe Racer Fan

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #108 on: June 12, 2014, 12:27:55 PM »
Bummer.  They are out of stock on the rubber o-ring gasket!
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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 SOHC4 Cafe Racer Fan

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #109 on: June 19, 2014, 04:25:06 PM »
The brake calipers needed new seals.  Although they were new from Godffrey, they managed to be leaking after installation.  New Honda OEM seals and repainted calipers (since the brake fluid ate some of the paint off).
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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 SOHC4 Cafe Racer Fan

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #110 on: June 22, 2014, 05:31:38 PM »
They're more fun when they run.

I took the 550 for a ride over the South Bay bridges into San Pedro.  She ran like a champ with the new idle jets.  I only wish she had as much power as my 836 with that lighter 550 weight.  Unfortunately, on the turn around, the bike started fluttering and missing.  I pulled off to one of the port exits (off the bridge) just in time for her to sputter and stall.  There was plenty of juice in the battery, and the starter was working fine -- just no spark.  I checked and reconnected all of the wiring connections to the Dyna 2000 box, the coils, the plugs, etc.  Nothing was loose.  I ended up getting a flatbed tow home. 

I let her rest a couple of hours and then she started again, but after running about five minutes the same thing happened.  It's almost like my Dyna ignition is overheating or something. 

Suggestions??

image_zps8f469c9d by Donald Leonhardt, on Flickr
« Last Edit: July 05, 2017, 10:30:23 AM by SOHC4 Cafe Racer Fan »
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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 Tews19

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #111 on: June 22, 2014, 07:48:32 PM »
I have read the dynas will take a #$%*. I would call them up. Tell them you did troubleshooting for other issues and everything points to the Dyna. Maybe put the points plate back on and see if the problem is still there.
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Offline SOHC4 Cafe Racer Fan

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #112 on: June 23, 2014, 12:25:16 AM »
I will have to do some more troubleshooting to see if the Dyna took a dump. It's a brand new unit with maybe a few hundred miles on the clock.
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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 bwaller

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #113 on: June 23, 2014, 04:08:59 AM »
How long did you ride before it ran into trouble? I'm just wondering about the tank vent, inline gas filter??, fuel issues first. If you rode it any distance first then likely not.

I have had my issues with the D2K's. If we were closer I'd send a box & trigger plate for you to try. As suggested you can install a points plate to know for sure.
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Offline flatlander

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #114 on: June 23, 2014, 05:34:38 AM »
keeping an eye on this... interested to find out if this is due to the dyna2000 or something else.
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Offline SOHC4 Cafe Racer Fan

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #115 on: June 23, 2014, 07:55:34 AM »
Quote from: bwaller on June 23, 2014, 04:08:59 AM
How long did you ride before it ran into trouble? I'm just wondering about the tank vent, inline gas filter??, fuel issues first. If you rode it any distance first then likely not.

I have had my issues with the D2K's. If we were closer I'd send a box & trigger plate for you to try. As suggested you can install a points plate to know for sure.

After the latest round of tuning, I rode it about 40 miles.  No apparent fuel issues.  It started as a "miss" issue with noticeable power loss and bogging. At first, I though it was a loose wire to one of the coils or the plug wires, since it felt like I lost two cylinders.  Then as I pulled off the road, it felt and sounded like I lost the remaining cylinders into a stall.  I couldn't get the bike to fire.  I pulled and reconnected the wires to the Dyna box, to the coils and to the plugs.  No joy. 

After a few hours of non-running, I fired the bike straight up but after five minutes of running the same thing happened. 

The starter motor is working fine too. 

I've never had a Dyna crap out on me on my 750, even when riding in the heat here in Southern Cal -- and yesterday was not hot, either.  This Dyna unit maybe has a few hundred miles on it.
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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 calj737

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #116 on: June 23, 2014, 08:48:36 AM »
Don - stock coils or Dyna? And what's deal with your Reg/Rec? Stock or aftermarket?

I've noticed my Dyna coils get pretty dang hot, though I've not had any issues with my Dyna S or them. Just gathering info...
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"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline SOHC4 Cafe Racer Fan

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #117 on: June 23, 2014, 08:59:48 AM »
Dyna 2000, Dyna suppression wires and Dyna coils.

Rick's regulator/rectifier, in a spot where it gets plenty of ventilation.
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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 bwaller

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #118 on: June 23, 2014, 10:16:38 AM »
If it was a coil, it would continue to run on the opposite two cylinders. I have had two separate issues with these crank triggers. In both cases the bike idled fine on all four but wouldn't rev past 5500 or so. This is obviously a different issue but could still be ignition.

When it happened the second time was there spark at the plugs? I'm sure you're all over this, but try it again & when it stalls check for spark.

I have seen goofy things happen with fuel lines breaking down and blocking flow, so if there is actually spark after it stalls you'll have a new avenue to follow. I've been frustrated with fuel line the last while, maybe it's junk line, possibly ethanol.
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Offline SOHC4 Cafe Racer Fan

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #119 on: June 23, 2014, 12:57:01 PM »
Quote from: bwaller on June 23, 2014, 10:16:38 AM
If it was a coil, it would continue to run on the opposite two cylinders. I have had two separate issues with these crank triggers. In both cases the bike idled fine on all four but wouldn't rev past 5500 or so. This is obviously a different issue but could still be ignition.

When it happened the second time was there spark at the plugs? I'm sure you're all over this, but try it again & when it stalls check for spark.

I have seen goofy things happen with fuel lines breaking down and blocking flow, so if there is actually spark after it stalls you'll have a new avenue to follow. I've been frustrated with fuel line the last while, maybe it's junk line, possibly ethanol.

No spark. After cooling overnight, it fired but was dead missing on a cylinder. Fuel is running fine. Then another cylinder misses after more running and eventually a stall. Then no spark.
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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 bwaller

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #120 on: June 23, 2014, 01:10:19 PM »
Better call Dynatek.
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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #121 on: June 23, 2014, 02:01:03 PM »
Yep. Hopefully they will stand behind their product.
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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 bwaller

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #122 on: June 23, 2014, 05:49:32 PM »
They will know the manufacturing date but not how many hours it has run! (that was my problem  :P) Hopefully you didn't but it three years ago otherwise they should look after you. It doesn't happen overnight however.
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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #123 on: June 24, 2014, 09:41:46 AM »
Quote from: bwaller on June 23, 2014, 05:49:32 PM
They will know the manufacturing date but not how many hours it has run! (that was my problem  :P) Hopefully you didn't but it three years ago otherwise they should look after you. It doesn't happen overnight however.

I bought it in December so it still falls under the 1 year warranty (and I have a proof of purchase) so hopefully Dynatek will just replace it.

UNRELATED QUESTIONS:  What year did Honda switch to longer fork legs on the 550?  My 1975 fork legs are too short to fit both a fork brace and fender.  I've heard that in later years, the fork legs are longer and provide more clearance so you can fit both.
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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 SOHC4 Cafe Racer Fan

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Re: 1975 CB550K1 - Stock-ish Restomod
« Reply #124 on: June 24, 2014, 11:12:04 AM »
Just got an answer on the fork legs in the sohc/4 bikes forum.  It looks like Honda changed the length of the 550 fork legs with the 1977-78 models.  This seems to make sense, because they changed the frame passenger peg mounts, the gas tank, upper dash and carburetors.
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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
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