Author Topic: 1974 CB750 K4 "The Jones Special" (Read 15724 times)

Jones · « **on:** July 10, 2011, 12:42:30 PM »

Ok, Its about time I put up a thread on my bike "The Jones Special."

So here we go:

I got the bike last summer (2010) as a high school graduation present to myself.
It wasn't expensive.

Here's a picture of the bike when i first got it. (Minus the seat that was on it when I bought it.)

So I started by buying a manual.

Then I pulled the motor and took it to a friends machining shop for a check and rebuild. I had spent about a week trying to unfreeze the motor, but time would tell that my piston ring where frozen to the cylinder walls. So a full set of gaskets and piston rings later, I should have it back soon.

The next step, once I have it, then I'm going to go ahead and check the transmission, and all that fun.
Apart from that, iv been working on cleaning up the carbs. They should be getting a full rebuild soon.

So that brings us up to date on the power plant. Now on to the rest.
I stripped everything off the frame except the kickstand, and I'm going to have it blasted and powder-coated. (Soon)
I didn't even try to save any of the wires. Most of them had been worn through, and it was a mess. I bought a new, more simple, wiring schematic offline. It to was very cheap. Six dollars I think. It looks solid, but only time will tell.
Em currently planning on replacing as much of the electronics as I can, but I'm still ironing out the kinks in my plan, so I'll save that topic for another day.

Any other parts I thought i wanted to use, I went ahead and sand blasted and painted them. Been using a lot of Rustoleum Enamel, and I'm hoping it all works well.

Here are some pictures of a few of the parts.

Carbs and Stacks mostly clean, but they still need a rebuild

Shocks

Oil tank (upside down)
http://i828.photobucket.com/albums/zz205/CRXjones/summer2011picsCB750campingonmonroelake025.jpg

A couple picks of the Speedo and Tach, 'cause i think they came out really well considering how bad they where

and the exhaust manifold; stock pipes, with the muffler pulled off. Blasted and blacked. I'll have to change it out eventually, but it'll work for now.

And finally a couple of my "rear assembly" iv still got a few thing to do, but it looks a helluva lot better than it did.

So that bring us up to speed on the whole project right now!
But don't worry:
More to come.

Johnie · « **Reply #1 on:** July 10, 2011, 01:20:03 PM »

Welcome to the forum jones. Coming along really good. Excellent project for you. I did the K4 a couple years ago and I wanted to mention it looks like the gauges are flipped. The K4 had the speedo on the left and tach on right. Keep the pics coming for us...

Jones · « **Reply #2 on:** July 10, 2011, 06:39:36 PM »

wow, i guess i wasn't paying attention. haha, i'll get it sorted out. Thanks Johnie.

Johnie · « **Reply #3 on:** July 10, 2011, 08:32:25 PM »

No biggie...you would have figured it out when you put them on. Just wanted to save you some aggravation. Nice looking paint job on the items. Did you have the ugly king/queen seat like mine did? Man it looked ugly on mine when I got it. And so many previous owners put them on the bike back then. Guess it was a confort item. Mine actually had a Corbin k/q on it so it was quality.

Jones · « **Reply #4 on:** July 11, 2011, 09:08:56 AM »

I don't know, the seat was a one piece with a high pointed back, i cant even find a picture of one.
Sufficed to say, it's wierd. I'll post a picture next time i get a chance.
Yeah, iv heard those corbins are nice. But I plan to make my bike as uncomfortable as possible.

Jones · « **Reply #5 on:** July 22, 2011, 09:31:21 AM »

Little bit of progress today. Chopped the hoop on the back of the frame. Im having a bit of trouble deciding wether I should cut the frame right behind the shock mounts, or leave a few inches.

I'm feeling a little crazy. I just cut off part of the frame.
More to come.

Bankerdanny · « **Reply #6 on:** July 22, 2011, 03:33:26 PM »

Shelby Charger. Very cool. I was a big fan when those came out, although I prefer the Omni version. For a few years in the early 90's I drove a Charger 2.2. Other than non-working A/C, it was a fun, reliable, comfortable car.

bjatwood · « **Reply #7 on:** July 22, 2011, 05:49:19 PM »

I had a 81 Dodge Charger 2.2 back in the Day. It was a great car, I beat the crap out of that car!

Jones · « **Reply #8 on:** July 23, 2011, 07:48:12 AM »

Yep, I wouldn't mind having the omni GLHS, (i think they're lighter). But I'm pleased with the charger 'cause i have a thing for "ugly" cars.

I'll post a pic when it gets out of the shop.

Anyway, back to the CB750:
Ground all the "extras" off the frame last night/this morning. including the old seat hinges, and the main-stand mounts.
I also went ahead and ground out some of the defects in the factory welds. not much, just a few beads of spatter here and there.

Now I need to decide how to attach the seat I'm building. I've an idea, but we'll see.

More coming.

Jones · « **Reply #9 on:** August 05, 2011, 09:22:22 AM »

Motor is done. Going to pick it up later today.
Clean up and paint is on my agenda.

The frame is still in the works.

More to come.

Jones · « **Reply #10 on:** August 08, 2011, 09:38:27 AM »

I've been cleaning on the motor on and off for about three days. Starting to make some real progress, but I'm having a little trouble getting all of the fins clean enough to paint.

Jones · « **Reply #11 on:** August 09, 2011, 09:15:46 AM »

Still working on cleaning the fins. Got the Valve Cover cleaned and painted, kind of like a test area, I used Duplicolor motor black "Low Gloss," then i put a clear coat over it. I think the clear coat was a mistake. It looks good, its just to damn shiney.

Ricky_Racer · « **Reply #12 on:** August 09, 2011, 09:11:17 PM »

Quote from: CRXjones on July 22, 2011, 09:31:21 AM

Little bit of progress today. Chopped the hoop on the back of the frame. Im having a bit of trouble deciding wether I should cut the frame right behind the shock mounts, or leave a few inches.

I'm feeling a little crazy. I just cut off part of the frame.
More to come.

CRX, whatever you decide to do with the rear of the frame, IMHO, you might want to bridge those shock mounts...

RR

thrutheframe · « **Reply #13 on:** August 09, 2011, 09:30:19 PM »

Quote from: Johnie on July 10, 2011, 01:20:03 PM

Welcome to the forum jones. Coming along really good. Excellent project for you. I did the K4 a couple years ago and I wanted to mention it looks like the gauges are flipped. The K4 had the speedo on the left and tach on right. Keep the pics coming for us...

looks like mine are flipped too.

fergie · « **Reply #14 on:** August 09, 2011, 09:48:33 PM »

The k bikes did not come with a 4 into 1 pipe stock. the one you have is aftermarket

Jones · « **Reply #15 on:** August 10, 2011, 09:14:19 AM »

Quote from: fergie on August 09, 2011, 09:48:33 PM

The k bikes did not come with a 4 into 1 pipe stock. the one you have is aftermarket

yeah, i figured the previous owner must have done some mods to the bike. I had a feeling the exhaust isn't original, and i know the velocity stacks aren't. I think he might have jetted the carbs too, but im not quite ready to figure that out yet.

Jones · « **Reply #16 on:** August 10, 2011, 09:23:10 AM »

Quote from: Ricky_Racer on August 09, 2011, 09:11:17 PM

Quote from: CRXjones on July 22, 2011, 09:31:21 AM
Little bit of progress today. Chopped the hoop on the back of the frame. Im having a bit of trouble deciding wether I should cut the frame right behind the shock mounts, or leave a few inches.

I'm feeling a little crazy. I just cut off part of the frame.
More to come.

CRX, whatever you decide to do with the rear of the frame, IMHO, you might want to bridge those shock mounts... RR

Yeah, definatly. By the time I'm done with it, it should be better than new.

Jones · « **Reply #17 on:** August 11, 2011, 07:13:13 AM »

Got done with the motor cleanup early this morning. Put the first coat of paint on as well. Pictures when its all painted + pretty.
Still no word on the frame.

Jones · « **Reply #18 on:** August 16, 2011, 06:24:43 AM »

Finished painting the motor.

Still haven't heard back on the frame.
Unfortunatly, the progress is going to slow down for a while.
College starts again next week.
Still.... More to come

Jones · « **Reply #19 on:** September 08, 2011, 06:38:01 PM »

Finally got some spark plugs. So the cylinders are finally closed for what's probably the first time in 20 years.
A long way to go.

Mayor08 · « **Reply #20 on:** September 08, 2011, 07:20:08 PM »

Nice color choice for the engine!

Free Booter · « **Reply #21 on:** September 09, 2011, 10:09:25 PM »

Engine looks sharp.

Jones · « **Reply #22 on:** September 14, 2011, 01:36:35 PM »

I bought a 1975 Goldwing.

Can anybody tell where I'm going with this?

Jones · « **Reply #23 on:** October 05, 2011, 04:28:05 AM »

New parts at home, waiting patiently for my attention.

Carb Re-Builds for a 1974 CB750 and a Master Cylinder Re-Build for a 1975 GL 1000

All Balls Steering Bearings and a rather nifty spark plug wrench from vintagecb750.com

And a new, and improved rear wheel for The Jones Special.

So apart from the new parts, progress is slow. I somebody else is working on the frame now and I'm hoping she'll be done and ready for paint this weekend. Hopefully this fall break, I'll get a chance to rebuild the carbs and finish the front end. And maybe, if everything works out, The Special will be a roller by the end of the month.

Fingers Crossed with Many Miles Ahead,
-Jones

WhyNot2 · « **Reply #24 on:** October 05, 2011, 05:03:04 AM »

Where did you get the carb rebuild kits and steering bearings?

News:

Author Topic: 1974 CB750 K4 "The Jones Special" (Read 15724 times)