Author Topic: 1974 CB550. Racetech Monoshock. JMR Head. Built Engine. "BLAC"  (Read 179471 times)

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Offline calj737

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Re: 1974 CB550. Monoshock. Engine Build. "BLAC"
« Reply #525 on: January 25, 2017, 05:22:57 am »
I knew I liked you... my daily rider
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"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 540nova

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Re: 1974 CB550. Monoshock. Engine Build. "BLAC"
« Reply #526 on: January 25, 2017, 05:29:44 am »

I like to go fast, too


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Re: 1974 CB550. Monoshock. Engine Build. "BLAC"
« Reply #527 on: January 25, 2017, 11:08:23 am »
yep, it is definitely a 'both cheek, full ass situation'.  It is more teleportation than acceleration with this thing.  you just twist the throttle and you find yourself existing farther down the road instantaneously

This morning I started it up (I get it warmed up at least once a month) and the brake lever has almost no resistance. It feels like there is absolutely no fluid in the lines or something (but the reservoir is full)..

Im guessing it just needs to be bled, but with all of the potential things that could go wrong with working on this one myself I'm just going to take it in and have it serviced. The last thing I need it to grab a handful of brake that isn't there...   :o

Likely due for a bleed and maybe some new fluid (depending on its age/color).  That RR is the $hit!  I no longer have anything that could dream of keeping up, but I'll go for a ride anyway.  Marina Del Rey is a fairly short hop (on the weekends at least) from Long Beach.
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. Monoshock. Engine Build. "BLAC"
« Reply #528 on: January 25, 2017, 11:47:32 am »
yep, it is definitely a 'both cheek, full ass situation'.  It is more teleportation than acceleration with this thing.  you just twist the throttle and you find yourself existing farther down the road instantaneously

This morning I started it up (I get it warmed up at least once a month) and the brake lever has almost no resistance. It feels like there is absolutely no fluid in the lines or something (but the reservoir is full)..

Im guessing it just needs to be bled, but with all of the potential things that could go wrong with working on this one myself I'm just going to take it in and have it serviced. The last thing I need it to grab a handful of brake that isn't there...   :o

Likely due for a bleed and maybe some new fluid (depending on its age/color).  That RR is the $hit!  I no longer have anything that could dream of keeping up, but I'll go for a ride anyway.  Marina Del Rey is a fairly short hop (on the weekends at least) from Long Beach.

That would be great, we could also meet up at my secret lair where I'm building my bike (downtown culver city).  I'd love to talk shop with someone who knows more than I do about CBs and get a second set of eyes on my project.
   
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 calj737

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Re: 1974 CB550. Monoshock. Engine Build. "BLAC"
« Reply #529 on: January 25, 2017, 12:56:41 pm »
There's a bleeder on the MC and the caliper. (7mm if I recall correctly) Its super easy to bleed yourself. Use ONLY DOT 4 fluid though. If yours is like mine, theres a "sponge" in the MC to prevent the fluid from aerating under heavy riding. Carefully lift it out and verify the fluid level.

And FFS, don't ever damage the reservoir. On mine, the reservoir is part of the MC and to replace it cost me $450!!!  >:( All because my son tipped the damn thing in the garage and cracked the reservoir threads! $450 to repair plastic threads.... Did I say I was pissed?

Sorry, forgot my place. I'll head over to the Pissed Off thread. Pardon me while I kill someone-
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"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 754

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Re: 1974 CB550. Monoshock. Engine Build. "BLAC"
« Reply #530 on: January 25, 2017, 01:51:25 pm »
Do you have a pic of the threads? 200 bux would have gone a long ways toward a solution, when I had the shop..
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
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. Monoshock. Engine Build. "BLAC"
« Reply #531 on: January 25, 2017, 01:57:22 pm »
There's a bleeder on the MC and the caliper. (7mm if I recall correctly) Its super easy to bleed yourself. Use ONLY DOT 4 fluid though. If yours is like mine, theres a "sponge" in the MC to prevent the fluid from aerating under heavy riding. Carefully lift it out and verify the fluid level.

And FFS, don't ever damage the reservoir. On mine, the reservoir is part of the MC and to replace it cost me $450!!!  >:( All because my son tipped the damn thing in the garage and cracked the reservoir threads! $450 to repair plastic threads.... Did I say I was pissed?

Sorry, forgot my place. I'll head over to the Pissed Off thread. Pardon me while I kill someone-

Haha that is terrible!  I will be very careful when I look at it!

I was doing some research on a S1000rr forum and someone said they didn't want to mess with it themselves because of "the ABS system"... I didn't think that would complicate things, but haven't looked into it further.  Ill dig around!
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 calj737

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Re: 1974 CB550. Monoshock. Engine Build. "BLAC"
« Reply #532 on: January 25, 2017, 03:12:22 pm »
The bleeder at the MC is almost always under pressure, so simply cracking it you should here a "PFFFT". Once you do, its bled. The ABS is not involved in the bleeding. You won't be bleeding the ABS pump, just the lines and caliper. But you shouldn't need to bleed anything just form it sitting unless you rode on low fluid.

It could also be the pad is worn  ;)
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"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 calj737

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Re: 1974 CB550. Monoshock. Engine Build. "BLAC"
« Reply #533 on: January 25, 2017, 03:13:04 pm »
Do you have a pic of the threads? 200 bux would have gone a long ways toward a solution, when I had the shop..
If this is targeted at me, its a plastic reservoir and cap. My lathe and mill can't fix that, doubt yours could either.
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"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 BLAC

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Re: 1974 CB550. Monoshock. Engine Build. "BLAC"
« Reply #534 on: January 25, 2017, 03:31:56 pm »
The bleeder at the MC is almost always under pressure, so simply cracking it you should here a "PFFFT". Once you do, its bled. The ABS is not involved in the bleeding. You won't be bleeding the ABS pump, just the lines and caliper. But you shouldn't need to bleed anything just form it sitting unless you rode on low fluid.

It could also be the pad is worn  ;)

There are only 1,300 miles on the bike, so that is unlikely haha

the reservoir looks like it is filled to the brim (above max) im not saying that as a good thing, just something I just noticed. It always felt fine except one day after sitting for 3 weeks or so there was just practically no feel in the lever when I squeezed it at start up...



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. Monoshock. Engine Build. "BLAC"
« Reply #535 on: January 25, 2017, 03:33:28 pm »
I just had a great call with MRieck... plans are set, parts are being ordered.

Can you guys set up a gofundme page? That man can talk you into putting your hard earned money to worK!  :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

Online Stev-o

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Re: 1974 CB550. Monoshock. Engine Build. "BLAC"
« Reply #536 on: January 25, 2017, 03:39:25 pm »
We can be very convincing to get you to spend money!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline BLAC

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Re: 1974 CB550. Monoshock. Engine Build. "BLAC"
« Reply #537 on: January 25, 2017, 05:52:18 pm »
We can be very convincing to get you to spend money!

Aint that the truth.  Cal has be ripping my motor to pieces and Mike has be selling my fillings to put it back together! 

I thought I was getting away from expensive bikes when I sold my Ducati... What a fool I was.
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 calj737

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Re: 1974 CB550. Monoshock. Engine Build. "BLAC"
« Reply #538 on: January 25, 2017, 06:33:21 pm »
I bait them, he cleans them out. It's a love-love partnership.
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"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 BLAC

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Re: 1974 CB550. Monoshock. Engine Build. "BLAC"
« Reply #539 on: January 25, 2017, 06:37:42 pm »
I bait them, he cleans them out. It's a love-love partnership.

You sir, are a master baiter.
« Last Edit: January 25, 2017, 06:56:18 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. Monoshock. Engine Build. "BLAC"
« Reply #540 on: January 25, 2017, 07:44:34 pm »
The bleeder at the MC is almost always under pressure, so simply cracking it you should here a "PFFFT". Once you do, its bled. The ABS is not involved in the bleeding. You won't be bleeding the ABS pump, just the lines and caliper. But you shouldn't need to bleed anything just form it sitting unless you rode on low fluid.

It could also be the pad is worn  ;)

There are only 1,300 miles on the bike, so that is unlikely haha


It's barely broken in!
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: 1974 CB550. Monoshock. Engine Build. "BLAC"
« Reply #541 on: January 25, 2017, 07:44:58 pm »
We can be very convincing to get you to spend money!

Yes, we are always ready to help with this!
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 SF

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Re: 1974 CB550. Monoshock. Engine Build. "BLAC"
« Reply #542 on: January 25, 2017, 08:53:50 pm »
Just read the whole thread, you sir will have one amazing bike when done. All you guys are great people.


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92 wr250 sold
98 zx6r sold
04 zx10r
73 cb350 twin
75 cb550f
75 cb550f
72 r5c
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Offline BLAC

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Re: 1974 CB550. Monoshock. Engine Build. "BLAC"
« Reply #543 on: January 26, 2017, 10:43:05 pm »
Thank you for the kind words! Stay tuned, I should have the monoshock on in the next month 👌🏼

Nils, I got my baby all packed and dressed up for you.  Leaving home tomorrow!

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 Restoration Fan

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Re: 1974 CB550. Monoshock. Engine Build. "BLAC"
« Reply #544 on: January 27, 2017, 09:07:34 am »
Bryan,
You might want to put that case on a workout plan.  The guns (arms) are looking a bit light there, buddy! :)

Ron
Ron

Stella - Logan's Senior Project    78 750K http://forums.sohc4.net/index.php?topic=141761.0

Logan's Reward - CB500 and CB550 Cafes    http://forums.sohc4.net/index.php/topic,147787.0.html

Offline BLAC

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Re: 1974 CB550. Monoshock. Engine Build. "BLAC"
« Reply #545 on: January 27, 2017, 09:30:22 am »
the other bits are with Mike Rieck getting PAMPED UP!
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. Monoshock. Engine Build. "BLAC"
« Reply #546 on: January 27, 2017, 02:21:55 pm »
the other bits are with Mike Rieck getting PUMPED UP!
They come back from Nils PIMPED UP!


FTFY
David- back in the desert SW!

Offline 754

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Re: 1974 CB550. Monoshock. Engine Build. "BLAC"
« Reply #547 on: January 27, 2017, 02:36:08 pm »
Do you have a pic of the threads? 200 bux would have gone a long ways toward a solution, when I had the shop..
If this is targeted at me, its a plastic reservoir and cap. My lathe and mill can't fix that, doubt yours could either.

Yes, it was for you..
If I can see the parts, I cant say that..  Let me say though sometimes there is a clever solution.
I made a nice billet reservoir for one guy on here..wish i had a pic or the details..
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
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. Monoshock. Engine Build. "BLAC"
« Reply #548 on: January 27, 2017, 02:53:04 pm »
the other bits are with Mike Rieck getting PUMPED UP!
They come back from Nils PIMPED UP!


FTFY

Accurate  8)
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 calj737

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Re: 1974 CB550. Monoshock. Engine Build. "BLAC"
« Reply #549 on: January 27, 2017, 04:58:17 pm »
Do you have a pic of the threads? 200 bux would have gone a long ways toward a solution, when I had the shop..
If this is targeted at me, its a plastic reservoir and cap. My lathe and mill can't fix that, doubt yours could either.

There was no repairing. The reservoir is integrated into the MC. The plastic threads of the reservoir were broken. I'm pretty good at machining or welding my own stuff. Trust me, I gave it due consideration. There also isn't an aftermarket compatible MC for the model of bike which forced the stock replacement. 2 weeks from Germany was the "expedited" delivery.  :( And the privilege of paying $450 to wait 2 weeks.

But to replace/install took less than 10'. Fully bled at the caliper and MC.
Yes, it was for you..
If I can see the parts, I cant say that..  Let me say though sometimes there is a clever solution.
I made a nice billet reservoir for one guy on here..wish i had a pic or the details..
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"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