Author Topic: 1973 CB750 Four K3 -- Project "Terry's Fault" -- BUILD RESUMED (Read 63315 times)

edwardmorris · « **Reply #50 on:** December 27, 2014, 02:46:56 PM »

Ventured into the rats nest after that, boy what a mess, this is going to give me nightmares. I'll have to redo all wiring for the dash and controls. For the longest time I wondered where the heck is the ignition key, turns out it has a NASCAR style ignition

Tews19 · « **Reply #51 on:** December 27, 2014, 03:42:49 PM »

Rafi what are you going to do with the rear shock lowering blocks?

edwardmorris · « **Reply #52 on:** December 27, 2014, 04:17:57 PM »

Quote from: Tews19 on December 27, 2014, 03:42:49 PM

Rafi what are you going to do with the rear shock lowering blocks?

Sell/Trade?

Tews19 · « **Reply #53 on:** December 27, 2014, 04:23:33 PM »

Let me see if the guy I know wants them. How much if you were to sell?

edwardmorris · « **Reply #54 on:** December 27, 2014, 04:24:37 PM »

Quote from: Tews19 on December 27, 2014, 04:23:33 PM

Let me see if the guy I know wants them. How much if you were to sell?

Check PMs.

edwardmorris · « **Reply #55 on:** January 06, 2015, 04:52:23 PM »

As the exhaust work continues in the background, I'm glad the tank got done

Original Ford's Mustang GT Race Red

Davez134 · « **Reply #56 on:** January 06, 2015, 07:03:11 PM »

Very nice!

edwardmorris · « **Reply #57 on:** January 06, 2015, 07:42:50 PM »

Thanks! Most of the exhaust stuff is out of my hands at the moment, really need that fitment locked down so I can start tearing into the engine. Any pro welders wanna lend a hand

??

edwardmorris · « **Reply #58 on:** January 14, 2015, 07:11:44 PM »

Look what arrived today from half way around the world! I had a very specific custom set in mind for this bike, but Joe's/FrankenFrankenStuff foundry isn't quite ready yet so these will have to do. There's always another 750 right

Besides, I have something else cooking that he's helping me with right now, details in time

Davez134 · « **Reply #59 on:** January 14, 2015, 07:24:43 PM »

I'm blinded

Very nice!

HondaMan · « **Reply #60 on:** January 14, 2015, 07:35:31 PM »

Quote from: edwardmorris on January 06, 2015, 04:52:23 PM

As the exhaust work continues in the background, I'm glad the tank got done

Original Ford's Mustang GT Race Red

Beeyootiful!

How are the pipes doing (or should I ask?).

edwardmorris · « **Reply #61 on:** January 14, 2015, 07:54:15 PM »

Thanks!

As for the exhaust, so far having schit for luck with local shops and welders. A good friend form here is looking into it for me, so hopefully some progress on that soon. Exhaust is what is holding up the teardown.

edwardmorris · « **Reply #62 on:** January 26, 2015, 05:39:46 PM »

Got a good jolt of motivation after early release from work, so I started tearing it down. Need to make room in the garage anyway to start the K2 assembly in March. Some good and bad news. Good news is that the frame is intact, and what looked like rust is actually crud falling out of the seat.

The PO had used 7/16" bolts instead of seat hinges to mount the seat, total PITA to get them out. Gas tank has a nasty smelling light yellow colored coating on the inside, no idea what it is. Took off the controls, and its safe to say they are toast. The wires are so hard, they're cracking like twigs. And the insides of the controls are a cruddy mess too

The electrical stuff at the battery box is just as bad or worse, very little hope of saving anything there.

edwardmorris · « **Reply #63 on:** January 26, 2015, 05:43:12 PM »

The rear fender is a total hidden disaster. Every other bolt is SAE force threaded over the metric stuff, left mounting bolt was a 1/2" torx, right was the metric equiv

Front of the fender has a massive tear near the mounting bolt, now I know why it looked like it was leaning right. Worst of all, since the rubber inserts for the wiring were missing, the PO used sealing foam to cover up the holes

edwardmorris · « **Reply #64 on:** January 26, 2015, 05:45:51 PM »

The seat latch bracket screw was pretty banged up and I was ready to drill it out, but I decided to try Gordon's impacta on it anyway. One hit and the thing came right off

The carbs! They're shedding their pods

Pulled them off caveman style with a broom stick

The slides are stuck in plate, choke moves with great resistance, these are in need of some serious work

edwardmorris · « **Reply #65 on:** January 29, 2015, 09:36:35 PM »

Didn't make it back to the carbs yet, but since I'm trying to get the controls for the K2 back together, I started with that for the K3 as well. The ones that came off the bike are basically unusable, save for the outer shells. I went back to my box of misfit parts and found a set of K4 controls that came with the K2, mostly intact but missing the throttle adjust screw and spring (aren't they all missing this now a days?) and a broken high/low beam siwtch.

As luck would have it, there was a K1 part out thread here that had just the controls I needed! K2 and earlier on the RHS and K4 and later on the LHS (seriously what are the odds

). So two birds in one, have the kill switch knob to use with the K2 and the high/low switch to use with the K3 (with K4 controls). Took em apart, soaked in electrical parts cleaner and separated everything (no pix though, damn phone's been on the charger). Not a bad evening

Restoration Fan · « **Reply #66 on:** January 30, 2015, 12:41:55 AM »

Love that tank! Where did you get your paint?

edwardmorris · « **Reply #67 on:** January 30, 2015, 08:47:56 AM »

Ford dealership, about $50 for the red and clear. Had a local body shop do the paint as I didn't want to ship it out. They didn't want to touch anything motorcycle related like all other shops here

. But after constant pestering and imploring, and the fact that it was a new tank already primed and sanded, they agreed to do it.

edwardmorris · « **Reply #68 on:** January 30, 2015, 09:30:53 AM »

Oh and also, as hard as I tried, the custom exhaust work is on hold, will get back to it for bike 3 (DAMN! I've got the bad fever, already dreaming up ideas for the next one

;D). I found help with getting the cones built but no luck with getting the proper collector made. Will watch ebay for the one I was modeling mine after and go with that when I find it.

Davez134 · « **Reply #69 on:** January 30, 2015, 09:46:45 AM »

Quote from: edwardmorris on January 30, 2015, 08:47:56 AM

Ford dealership, about $50 for the red and clear. Had a local body shop do the paint as I didn't want to ship it out. They didn't want to touch anything motorcycle related like all other shops here . But after constant pestering and imploring, and the fact that it was a new tank already primed and sanded, they agreed to do it.

I hate that response "we don't do motorcycles." Just tell em it's a modified tank for your car!

edwardmorris · « **Reply #70 on:** January 31, 2015, 02:35:05 PM »

What took weeks last time, got done in half a day today. Amazing what a difference the right tools make. Don't yet have a pic but I ripped out everything I need to get the engine out. Got to the points and found a dyna installation instead. I couldn't figure out how to separate it from the advancer so pulled it as well and put the banged up cover back on. Look at the amazing plumbing silicone seal gasket

Also, the friggin rear grab rail is welded to the damned frame

edwardmorris · « **Reply #71 on:** January 31, 2015, 03:41:42 PM »

Bit of a snag with the controls. Turns out the K4 controls (that came with my K2) I had have been modified to let the wires through instead of snaking them through the handlebars. The rotten set that came with the K3 has also been modified the same way. The parts set I bought from a member here has also been modified, but differently. Instead of making a cutout on the side of the lower shell like all the other sets, the parts set has holes made at the bottom.

I hadn't decided yet but its likely I will be going with a set of custom bars. I still have the superbike bars from the K2 that seem good enough but don't have holes drilled on them. The cutout on the sides are a bit worrying, good chance water will get through. In fact I wonder if THAT is why the set on this K3 are so totally rotted beyond belief.

I pondered going with custom controls, but that seems like a lot of splicing and figuring out what does what. Also, I simply HATE having a kill switch on the LHS

What should I go with? Cutouts on the bottom of the lower shell and chance it? Perhaps use a rubber seal like the one found on the crankcakses by the points? Or find an unmolested set?

edwardmorris · « **Reply #72 on:** January 31, 2015, 08:31:48 PM »

The carbs, got to them this evening, they were stuck as you can recall and I'd pretty much given up on them. Then I consulted with James, sent him that same pic I posted here. One pic is all he had to look at and tell me EXACTLY what was wrong with them

He noticed that #3 slide was down while the others were up. He figured that the slide lifter foot bent and let go. He suggested using some WD-40 and heat. I sprayed WD-40 liberally then carefully took off the spring. The moment I took it off, all but the stuck #3 slid down buttery smooth! A little heat and gentle persuasion, the #3 slide came out, but I'm more than certain that the needle seat is shot to hell, just seeing how far down the slide was.

The carbs look like they were worked on fairly recently. Like new after market floats, valves and 40 idles, but Keihin #130 mains, possibly the needles too. Outer two bowls are chrome plated, inner two aren't and aren't right either. Gaskets look recent too. Best part is, these are 7As! No corrosion anywhere, so I might actually save these for the K2. I had a great set of 7As from Bill for the K2, but I was always bummed about the little corrosion they had on the outside of #1 and #4 bodies.

edwardmorris · « **Reply #73 on:** January 31, 2015, 08:34:36 PM »

The master cyl got the usual treatment, removed all old junk, cleaned out corrosion, Ultrasonic clean and its ready to go to Marc/Powderman for some magic.

Bill/BentON Racing · « **Reply #74 on:** February 02, 2015, 04:29:06 AM »

Got more carb parts, lots, if anything needed, Bill

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Author Topic: 1973 CB750 Four K3 -- Project "Terry's Fault" -- BUILD RESUMED (Read 63315 times)