Author Topic: 79 CBX project (Read 8010 times)

BallAquatics · « **on:** June 05, 2018, 05:39:08 AM »

Well the 74 CB550 is running great thanks to all the help I received here. Guess it's time to start on it's big brother. Both were parked back in 88 NOT with the intention of leaving them for 29 years.

I'm hoping the CBX will be as easy as the 550. Some rust in the tank carb rebuild and some brake work. Fingers crossed. My evapo-rust was delivered yesterday!

Right now the bike is as dead as a door nail. Off with the tank for cleaning and a wiring inspection will be next. Probably purchase Mike Nixon's booklet, "Rebuilding the CBX1000 Carburetor" before starting on the carb rebuilds.

Dennis

innovativems · « **Reply #1 on:** June 05, 2018, 06:47:43 AM »

Gorgeous cbx!

Sent from my iPhone using Tapatalk

70CB750 · « **Reply #2 on:** June 05, 2018, 08:10:14 AM »

Following

Bankerdanny · « **Reply #3 on:** June 05, 2018, 09:08:07 AM »

Nice. I love the early twin shock CBX's

MikeSimon · « **Reply #4 on:** June 05, 2018, 11:14:57 AM »

If your CBX was parked in '88, you WILL have to go through the carbs! There is, never has been any CBX that was parked for more than 2 years which did not require carb work. If the carbs were no drained, the small jets and the accelerator circuit are gummed up. If the carbs were drained, most likely the O-rings are dried out and leaking.
Prepare yourself for quite a few hours of work and/or frustration. Engine need to be tilted to get the carbs out and very few get the carbs running right on first try.
If you don't have it already, Mike Nixon, a former Honda service rep put together an invaluable little pamphlet on how to restore CBX carbs.
It is available on ebay of from the author himself.

https://www.motorcycleproject.com/

MRieck · « **Reply #5 on:** June 05, 2018, 11:32:54 AM »

Parts can be a PITA to find and very expensive.....I have a red 79 in pieces and have been collecting all the parts for 5 years. Have 99% of the parts now and even scored a NOS Sport Kit for a very fair price.

DurangoCB · « **Reply #6 on:** June 05, 2018, 11:42:35 AM »

Love those bikes. Have fun!

strynboen · « **Reply #7 on:** June 05, 2018, 01:27:39 PM »

thek the generator..and thange the bearings and brushes...carbs is a bit hell to Work on....get a real good gasket/o ring kit..vho can hold up for fuel...strange some dont do that...

kpier883 · « **Reply #8 on:** June 05, 2018, 08:31:32 PM »

Randall has a very good kit for CBX carbs. It and the book you mentioned are what I used.

https://www.randakks.com/honda-cbx-randakk-master-carb-overhaul-kit.html

BallAquatics · « **Reply #9 on:** June 05, 2018, 08:34:20 PM »

Thanks for the comments & info guys.

Mike's carb rebuild book is on the way.....

strynboen, I'm leaning towards using the Randakk carb rebuild kit.....

https://www.randakks.com/honda-cbx-randakk-master-carb-overhaul-kit.html

Dennis

BallAquatics · « **Reply #10 on:** June 05, 2018, 08:38:57 PM »

Quote from: kpier883 on June 05, 2018, 08:31:32 PM

Randall has a very good kit for CBX carbs. It and the book you mentioned are what I used.

https://www.randakks.com/honda-cbx-randakk-master-carb-overhaul-kit.html

Thanks kpier883! That's the direction I've been leaning towards. Looks to be a very complete kit.

Dennis

strynboen · « **Reply #11 on:** June 06, 2018, 06:19:57 AM »

be very carefull vhen lockteit the choke plates schrevs...i got mine glued solid...thorth it vas better then use Lock/cut vashers...

MoMo · « **Reply #12 on:** June 06, 2018, 07:03:18 AM »

subscription sent in. Never forget the test rides after working on one "back in the day". Larry

MikeSimon · « **Reply #13 on:** June 06, 2018, 07:53:40 AM »

You will have to pull the pressed-in slow jets out. They sit under rubber plugs. You can tap them and use a small M3 or M4 screw to pull them out. Very difficult to get completely clean without pulling them. Also, the emulsion tubes have a tendency to stick. You may have to heat the jet tower they sit in and/or soak the carbs in hot soapy water for a while.

Bob3050 · « **Reply #14 on:** June 06, 2018, 09:00:26 AM »

Find a turbo kit for it and you can leave those six carbs in the garage.
Bob

MikeSimon · « **Reply #15 on:** June 06, 2018, 12:53:35 PM »

Quote from: Bob3050 on June 06, 2018, 09:00:26 AM

Find a turbo kit for it and you can leave those six carbs in the garage.
Bob

you could also replace the motor with a 104 cu-in V-Twin....

kslrr · « **Reply #16 on:** June 07, 2018, 07:03:16 AM »

Following

bill440cars · « **Reply #17 on:** June 11, 2018, 02:21:13 PM »

Good looking CBX, be looking in to see how it goes with yours. I had a 1980 CBX, for about 6 years. Then, situation changed & I needed to come up with some cash and with me getting older, I thought it was best to let it go. Boy, I have been regretting it ever since.

BallAquatics · « **Reply #18 on:** June 13, 2018, 02:17:58 AM »

Got Mike's carb rebuild book in the mail and was going to start this weekend, but I got side-tracked with this little beauty.

2011 CBR250R with less than 6000 miles. Needs just a tiny bit of tlc, but got a great price and it's a blast to ride. Plus I can ride it to my night job.... won't take the '74 CB550 for fear that something would happen to it in the parking lot.

Dennis

bill440cars · « **Reply #19 on:** June 15, 2018, 08:45:07 AM »

Quote from: BallAquatics on June 13, 2018, 02:17:58 AM

Got Mike's carb rebuild book in the mail and was going to start this weekend, but I got side-tracked with this little beauty.

2011 CBR250R with less than 6000 miles. Needs just a tiny bit of tlc, but got a great price and it's a blast to ride. Plus I can ride it to my night job.... won't take the '74 CB550 for fear that something would happen to it in the parking lot.

Dennis

Slick looking ride there. Should be fun.

jag767 · « **Reply #20 on:** August 08, 2018, 05:23:24 AM »

Fyi if you need any parts, a friend of mine has 3 cbx's, and a parts room for them. Probably enough to build 2 more, at least 1 complete one.

SOHC4 Cafe Racer Fan · « **Reply #21 on:** August 21, 2018, 02:36:58 PM »

Nice looking CBX. I think Nils has restored a few, too.

PeWe · « **Reply #22 on:** August 22, 2018, 10:01:48 PM »

I saw a red 79 CBX earlier this week. I like the stock look. I have forgotten how nice the engine sounds. Really quick throttle response.
A NOS looking -79 will be fine in my garage.

BallAquatics · « **Reply #23 on:** December 21, 2023, 05:59:26 AM »

Well it's taken me 5 years, but I brought the CBX home this past weekend! With a bit of luck hoping to have it road worthy by spring.....

newday777 · « **Reply #24 on:** December 21, 2023, 07:00:20 AM »

Cool. Did you get anything done to it in the past 5 years it's not been home?

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Author Topic: 79 CBX project (Read 8010 times)