Author Topic: 1974 CB750K - Restoration (Read 27176 times)

onetruepunk87 · « **Reply #100 on:** April 10, 2017, 06:37:45 PM »

Gauges on!

SOHC4 Cafe Racer Fan · « **Reply #101 on:** April 10, 2017, 08:58:42 PM »

Berry nice.

onetruepunk87 · « **Reply #102 on:** April 13, 2017, 06:58:07 PM »

Started working on some of this rat's nest. I've got maybe half of it wired up.
Am I missing something here? I've got a green and red wire by the starter solenoid that I'm not sure where they go.

my name is nobody · « **Reply #103 on:** April 14, 2017, 03:53:28 AM »

Quote from: onetruepunk87 on April 13, 2017, 06:58:07 PM

Started working on some of this rat's nest. I've got maybe half of it wired up.
Am I missing something here? I've got a green and red wire by the starter solenoid that I'm not sure where they go.

green= ground, red= bat.+(always hot), neither used on U.S.A. models.

onetruepunk87 · « **Reply #104 on:** April 14, 2017, 04:49:27 AM »

Awesome, thanks!

onetruepunk87 · « **Reply #105 on:** April 16, 2017, 07:15:03 PM »

Electronics are all wrapped up. Everything is wired and functioning. Swapped out the points for an electronic ignition and hooked up and adjusted all of my cables.

Next step, exhaust.

SOHC4 Cafe Racer Fan · « **Reply #106 on:** April 16, 2017, 07:57:20 PM »

Pretty damn close to done.

onetruepunk87 · « **Reply #107 on:** April 17, 2017, 09:49:56 AM »

Quote from: SOHC4 Cafe Racer Fan on April 16, 2017, 07:57:20 PM

Pretty damn close to done.

Almost. The paint is going to take the longest to finish it up. I'll have to start prepping everything this week. I've got a dent free tank from eBay that I need to strip and remove an old kreem liner and some side covers from frankenstuff to do up. I picked up Flake Sunrise Orange paint from VMR so I can do them up in the original color

The originals are in pretty good condition, some small dents and scratches so I'll probably just keep them off to the side for now. I threw them on yesterday just for the hell of it, the picture makes them look a lot better than they are. But here's an idea of what the finished product will look like (pay no attention to the gigantic mess.)

Stev-o · « **Reply #108 on:** April 17, 2017, 03:38:16 PM »

Looking good!

Tews19 · « **Reply #109 on:** April 19, 2017, 02:41:33 AM »

She does look really good! Great work!

onetruepunk87 · « **Reply #110 on:** April 23, 2017, 07:18:37 PM »

Thanks guys! I've had this reproduction exhaust, from David Silver Spares, tucked away for almost a year. I finally got it onto the bike yesterday and had the chance to fire it up today.

I attached a gas line, turned the key and hit the starter. It turned right on!

Stev-o · « **Reply #111 on:** April 23, 2017, 08:58:28 PM »

WooHoo.....and sounds good too! Congrats.

SOHC4 Cafe Racer Fan · « **Reply #112 on:** April 23, 2017, 10:01:13 PM »

Looks and sounds fantastic!

onetruepunk87 · « **Reply #113 on:** April 24, 2017, 04:33:24 AM »

Thanks guys! I still need to vacuum sync the carbs but it idled pretty well for a first start up.

onetruepunk87 · « **Reply #114 on:** April 30, 2017, 03:41:31 PM »

Started getting the spare tank I have ready for paint. First step, remove the kreem liner. I've read a lot of things about these liners, good and bad. The more recent I get though they're mostly bad. And since this liner was already separating from inside the tank it had to go. I plugged the petcock, dumped in a gallon of MEK and sealed the top now all I can do is wait and shake periodically.

I managed to pry out a 1/4 inch thick chunk that was hanging loose inside and set it in a coffee can with some MEK for test purposes. You could see the MEK instantly going to work as it started to become cloudy. I just went out to check on it an hour and a half later and it's turned to mush.

Unfortunately the original tank also has one of these liners in it too. I'm not sure if I want to run it in the interim, I've read that ethanol gas and this doesn't get along and I really don't want to rebuild my carbs again.

onetruepunk87 · « **Reply #115 on:** April 30, 2017, 06:43:27 PM »

Quote from: calj737 on April 30, 2017, 05:42:05 PM

Quote from: onetruepunk87 on April 30, 2017, 03:41:31 PM
I've read that ethanol gas and this doesn't get along and I really don't want to rebuild my carbs again.
Correct

Damn, I guess I shouldn't chance it. Well it looks like the MEK is doing a number on the Kreem so I shouldn't have to wait too much longer.

HondaMan · « **Reply #116 on:** May 02, 2017, 09:52:33 PM »

Aren't those pipes sweet?
Sorry I forgot to mention: you can put the top half of the airbox in easily, tighten it up to the frame and carbs, and then slide in the K&N in the lower half to bolt it up. MUCH easier!

onetruepunk87 · « **Reply #117 on:** May 04, 2017, 06:46:13 PM »

Haha, thanks Mark, I actually put the airbox on that way, my giant hands just were getting in the way. I don't think I can ever get tired of looking at those pipes, definitely worth the investment.

The Kreem is gone!
Before shot.

I used a plumbers plug to close up the tank. You can see in the coffee can some of the liquefied crap that came out. The plug actually ended up partially melting from the MEK.

The tank flash rusted pretty quick after draining and rinsing out.

Klean Strip Prep and Etch (phosphoric acid) cleaned it out almost instantly.

Tank is drying out now. I'll splash some 2-stroke fuel in there after to keep it from flash rusting again while I prep for paint.

Stev-o · « **Reply #118 on:** May 04, 2017, 07:03:29 PM »

Nice job on the tank!

onetruepunk87 · « **Reply #119 on:** May 06, 2017, 06:28:57 PM »

Thanks Steve-o! Got the tank stripped today. I'm gonna try and get some primer on tomorrow.

matt s · « **Reply #120 on:** May 06, 2017, 07:51:58 PM »

Nice work! Your project has been inspiration for me to keep working!

NobleHops · « **Reply #121 on:** May 06, 2017, 10:57:57 PM »

What he said, great project!

onetruepunk87 · « **Reply #122 on:** May 07, 2017, 04:36:39 PM »

Quote from: calj737 on May 07, 2017, 04:18:43 AM

Test that tank well for any leaks before you put your time into painting it! Fill it with gas and set it on towels and/or dust the seams with flour and watch for wet spots. It had a liner for some reason.... $:-\$

I went through that on my other 750 and don't want to again. I tested the tank after stripping it. I put baby powder down all the seems and filled it with gas, no leaks that I saw. Maybe the liner was precautionary?

Had off and on rain showers today so no primer. Unfortunately I'm at the weather's mercy when it comes to painting. I finished prepping my frankenstuff side covers and drilled holes for emblems. Hopefully I'll have some clear skies soon.

theDQG · « **Reply #123 on:** May 08, 2017, 04:49:18 AM »

Following. I just got a K4 and will be repainting my tank as well. Going to keep a close eye on how your sides and tank turns out!

Maximum Carnage · « **Reply #124 on:** May 08, 2017, 10:31:02 PM »

Quote from: onetruepunk87 on April 09, 2017, 07:10:25 PM

Gauges are back together. I figured I should get these on the bike before before I mount the headlight and start the wiring. That way I'm not scratching up the headlight bucket trying to get these in.

Great freaking job, looks great. If you would like to help me out with my gauges please let me know.

News:

Author Topic: 1974 CB750K - Restoration (Read 27176 times)