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Author Topic: 1974 Honda CB550. Monoshock. Engine Build. "BLAC"  (Read 4745 times)

Offline japstar

  • Posts: 120
Re: 1974 Honda CB550. Monoshock. Engine Build. "BLAC"
« Reply #40 on: Feb 09, 2017, 06:28:41 »
just found a big box of seals at my doorstep!


There goes the money :p
It always hurts me when you have to pay a lot of money for seals. But hey, at least you are sure your bike won't be dripping for the coming years.
GPZ550 cafe racer http://www.dotheton.com/forum/index.php?topic=69514.0

It ain't about showing up on a bike that the loan officer at your bank, or your parent's inheritance bought for you. It's about skinning your knuckles, straining your back, developing some blisters on your hands, breathing varsol and paint fumes,taking measurements and making mistakes.
It's about standing back, after the dust settles, and being able to say when people ask, "I BUILT it!"

Offline BLAC

  • Posts: 27
  • See Bee Five Fifty
Re: 1974 Honda CB550. Monoshock. Engine Build. "BLAC"
« Reply #41 on: Feb 09, 2017, 20:15:05 »
That was only some of the money  :P

more old OEM:

If you cant fix it with a hammer, it's an electrical problem.

Offline neevo

  • Posts: 2228
    • The blog of my custom CB400F build
Re: 1974 Honda CB550. Monoshock. Engine Build. "BLAC"
« Reply #42 on: Feb 09, 2017, 23:49:32 »
What's the best way of getting OEM oil seals? I notice the kits on eBay but prefer the security of OEM.

Do you just order the individual part numbers or can you get an official engine kit?


See the condensed version of my full build on my blog!

Offline BLAC

  • Posts: 27
  • See Bee Five Fifty
Re: 1974 Honda CB550. Monoshock. Engine Build. "BLAC"
« Reply #43 on: Feb 10, 2017, 01:04:05 »
I could not find a kit of OEM seals, so I ordered them all individually though Partzilla. 

Not too spendy... here is the list I put together for my 550k0

Oil Seals
91259-VM0-000 - 10X16X4.5  Clutch lever
91202-426-003 - 12X25X4.5  Gearshift Drum
91202-KFL-841 - 13.8X24X5  Gearshift Spindle
91204-286-003 - 18X29X7  Right Crankcase Cover
91201-300-003 - 30X42X8  Crankshaft
91201-323-005 - 30X45X8  Crankshaft
91205-283-015 - 33X57X7  Countershaft
91207-374-000 - 34X8 FLAT SEAL Mainshaft
91256-096-651 - 4.8X14.5X4  Tach seal
If you cant fix it with a hammer, it's an electrical problem.

Offline japstar

  • Posts: 120
Re: 1974 Honda CB550. Monoshock. Engine Build. "BLAC"
« Reply #44 on: Feb 10, 2017, 03:00:10 »
What's the best way of getting OEM oil seals? I notice the kits on eBay but prefer the security of OEM.

Do you just order the individual part numbers or can you get an official engine kit?
If I want some OEM parts, I order from www.cmsnl.com. Although it is a site from the netherlands, they ship to the USA too I think. (I am located in Belgium)
They have the parts lists shown for every bike, en you can just order by following the references on the parts list.
GPZ550 cafe racer http://www.dotheton.com/forum/index.php?topic=69514.0

It ain't about showing up on a bike that the loan officer at your bank, or your parent's inheritance bought for you. It's about skinning your knuckles, straining your back, developing some blisters on your hands, breathing varsol and paint fumes,taking measurements and making mistakes.
It's about standing back, after the dust settles, and being able to say when people ask, "I BUILT it!"

Offline coyote13

  • Posts: 1138
Re: 1974 Honda CB550. Monoshock. Engine Build. "BLAC"
« Reply #45 on: Feb 10, 2017, 12:42:35 »
If you have a local Honda powersports dealer you can order most OEM seals and parts through their website and have the parts shipped to the dealer free of charge!
Half the fun's in the get there...

Offline BLAC

  • Posts: 27
  • See Bee Five Fifty
Re: 1974 Honda CB550. Monoshock. Engine Build. "BLAC"
« Reply #46 on: Feb 10, 2017, 17:09:25 »
Yes, but Partzilla had free shipping on my order and their prices are very reasonable.  I live in LA so I get in the car and drive as little as I can  :P
If you cant fix it with a hammer, it's an electrical problem.

Offline BLAC

  • Posts: 27
  • See Bee Five Fifty
Re: 1974 Honda CB550. Monoshock. Engine Build. "BLAC"
« Reply #47 on: Apr 11, 2017, 17:43:15 »
Progress! (kinda)

I got my crank back from APE!  I didn't have it fully lightened, but I did have it 'race balanced'. I also for some other bits and pieces to help me get this thing put back together!

Now I just need my rods, cylinder, pistons, and head then I will be rollin!



pretty
If you cant fix it with a hammer, it's an electrical problem.

Offline BLAC

  • Posts: 27
  • See Bee Five Fifty
Re: 1974 Honda CB550. Monoshock. Engine Build. "BLAC"
« Reply #48 on: Apr 11, 2017, 17:44:53 »
Got some pretty parts in the mail..  ;D

Monoshock came in from Racetech. I couldnt be happier with it!  I havent ridden on it obviously but it sure does look the part until then..

They weren't sure if they could put ride height adjustability on it because of how short it is, but they made it work and it looks great!




Of course I had to bolt it up..  ;D



If you cant fix it with a hammer, it's an electrical problem.

Offline BLAC

  • Posts: 27
  • See Bee Five Fifty
Re: 1974 Honda CB550. Monoshock. Engine Build. "BLAC"
« Reply #49 on: Apr 12, 2017, 19:31:09 »
More goods!  It's go time!

Got something in the mail!
via Imgflip GIF Maker

The goods!


Stage 3+ JMR Head w/oversized valves


Intake Port


Exhaust port:


Vapor blasted, decked and bored cylinder:


Polished, peen'd and balanced rods (with late model 750 hardware).  I had a gram scale out and each one is 301 on the dot! (not to second guess JMR's work, more to appreciate it  ;D)


Wiseco forged aluminum pistons:


Now it is time to start the assembly! (don't worry, y'all wont miss out on the build... I will have tons of questions as I second guess myself throughout the entire process)   ;D
If you cant fix it with a hammer, it's an electrical problem.