Author Topic: ‘74 CB592 Build Thread  (Read 1467 times)

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Offline rumpleblumpkinz

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‘74 CB592 Build Thread
« on: January 16, 2018, 08:09:23 AM »
Welp figured I would start a build thread in hopes of helping others as well getting some of my own questions answered (there will be many  ;D)

   Some background - bike is a 1974 CB550K with 13K on the ticker.  Picked it up in November of ‘16 for $500. Pretty clean bike overall - needed carbs cleaned, battery, tires, cables, wheel bearings, and possibly a head gasket/o-rings as it was definitely seeping some oil from the head. My intention was to get it running and keep it around as a 2nd road bike for myself or for a friend if they wanted to ride.  Started disassembly, may have consumed a couple frosty treats and ended up completely disassembling the bike and engine. Engine was exceptionally clean for the age (could still see the honing on the cylinder walls, which along with some pry marks where
The cylinder meets the case leads me to believe the top end was redone at some point). Long story short, decided to completely restore/ modify the bike and do a custom build. Here’s the bike after I got it home (sans seat and fender:





And this is a photo from the prescious owner from several years prior in its mostly original state:





The important stuff:
DP592 61mm pistons from Dynoman
Webcam #358B cam from Dynoman
Dyna DS1-2 Electronic Igniton and coils from Dynoman
DP HD Barnett clutch from Dynoman
Stage 2.5 Porting, +1 Intake Valves, SERDI valve job by JMR Porting (MRieck)
022a Carbs w/ 110 mains, 40 pilot, needle on bottom clip
Delkevic 4-1 Stainless Exhaust
Custom Airbox from Steel Dragon
Hagon Shocks
Bridgestone Spitfire tires

Tuffside seat
Ford Medium Wedgewood Blue paint
Black rims/hubs w/Stainless spokes
Dime City mini gauges
Zero Gravity battery
Cycle X fork legs
APE head studs
Wideband O2 sensor w/ bar mount A/F gauge
Brass swing arm bushings
Lots of powdercoat and polished aluminum
All new seals/ bearings/ cables










Learning to MIG weld lol












Mocked up


As it sits



« Last Edit: January 19, 2018, 04:42:35 AM by rumpleblumpkinz »

Offline SOHC4 Cafe Racer Fan

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Re: ‘74 CB592 Build Thread
« Reply #1 on: January 16, 2018, 11:24:54 AM »
Nice project there - especially the engine components (including the sweet JMR port job) and the new paint.
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 Stev-o

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Re: ‘74 CB592 Build Thread
« Reply #2 on: January 16, 2018, 11:26:58 AM »
Great start!  Engine and tank look great.  Wanna sell the stock seat?
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline rumpleblumpkinz

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Re: ‘74 CB592 Build Thread
« Reply #3 on: January 16, 2018, 12:09:38 PM »
Great start!  Engine and tank look great.  Wanna sell the stock seat?

Thanks! Seat has been sold. It was a beaut lol

Offline Marissa

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Re: ‘74 CB592 Build Thread
« Reply #4 on: January 18, 2018, 11:43:41 AM »
Gorgeous bike there- incredible polish work!
1984 Nissan 300zx - sold
2016 Ford Fiesta ST - daily
1972 Honda CB500 - infinite work in progress

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Offline 02z06dave

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Re: ‘74 CB592 Build Thread
« Reply #5 on: January 20, 2018, 10:22:33 AM »
Nice job so far! I like where you're headed