Author Topic: 1975 CB750 Build! "Kona" - Sold and gone. (Read 70338 times)

Ravie · « **Reply #375 on:** June 18, 2015, 08:39:00 AM »

Yupper.

Had to order air box clamps thus morning...mine are mia...

Also ordered some smooth frankenstuff side covers.

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Ravie · « **Reply #376 on:** June 18, 2015, 08:40:48 PM »

Today was my D-day to get the bike fired for the first time. After a few hours of doing some last minute junk (like remembering to install the throttle cables...) I am ELATED to report that THE BIKE RUNS!!!!!!!!!!!!!!!!!!!!!!

proof:

goldarrow · « **Reply #377 on:** June 18, 2015, 09:02:08 PM »

Congratulations. Nice sounding motor. You'll need 3 qts of oil.

Ravie · « **Reply #378 on:** June 18, 2015, 09:07:13 PM »

Thanks, yeah after I made that video I added another full quart. :-)

70CB750 · « **Reply #379 on:** June 19, 2015, 04:31:15 AM »

Jolly good show!

evanphi · « **Reply #380 on:** June 19, 2015, 04:50:12 AM »

Right on! Congrats on getting it running.

I remember when I was just about to start my bike up for the first time after the top end job this winter, I was about to hit the starter when I remembered... NO EXHAUST! That was close. I'm sure the neighbours wouldn't have liked that one.

calj737 · « **Reply #381 on:** June 19, 2015, 04:55:44 AM »

Motor sounds really good, Ryan!

Seems you have some wiring gremlins to sort out for your lights and indicators yet? Oh well, another 2-3 months spent on that and you should just about be ready to ride as the fall weather approaches

Ravie · « **Reply #382 on:** June 19, 2015, 05:12:18 AM »

The strange thing is: I have a High beam. I have continuity from the switch to the power wires. The wiring is correct for the headlight. It just doesn't have low beam.... As far as the blinkers go...this harness has an extra light green wire that doesn't go anywhere on a 2 pin flasher relay. I'm not sure if I need to ground it or what needs to happen. I know others have used this harness with the flasher and I was thinking they just plain didn't hook it up but that didn't work here...

calj737 · « **Reply #383 on:** June 19, 2015, 05:16:16 AM »

Did you perhaps hook the wiring from your switch to the headlight plug backwards? The fact that the HI indicator is illuminated tells me that your powered wiring to the headlight wires at the switch is backwards to the plug at the headlight.

Ravie · « **Reply #384 on:** June 19, 2015, 05:17:55 AM »

The only lights illuminated are Oil and Neutral. :-)

calj737 · « **Reply #385 on:** June 19, 2015, 05:28:15 AM »

Pardon me, mistook the far right as your HI. Switching from LO/HI does that illuminate the idiot light?

Ravie · « **Reply #386 on:** June 19, 2015, 05:38:11 AM »

Yes, when i switch to High I get the Hi beam indicator. That switch is not in great shape. Though I had it apart and the contacts looked ok.

calj737 · « **Reply #387 on:** June 19, 2015, 05:40:27 AM »

If you remove the plug from the headlight, key on and RUN, do you get power to the LO plug connector? Toggle switch from HI to LO and check both pins.

Ravie · « **Reply #388 on:** June 19, 2015, 02:38:54 PM »

No. Only Hi.

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calj737 · « **Reply #389 on:** June 19, 2015, 03:39:15 PM »

trace the LO feed wire from the headlight plug back to the switch. You've got a problem along that path. If you can open the handlebar switch, and find the contact where the LO wire originates, check it for voltage with key ON.

Ravie · « **Reply #390 on:** June 21, 2015, 01:03:51 PM »

Turn signals working now. Just needed a new flasher. Fixed my switch...or so i thought. Now when I turn the headlight on it blows the fuse instantly. Grrr.

Also... neutral switch leaks pretty good. Guess Ill need a new one.

Anyway...motor is retorqued and sounding great.

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edwardmorris · « **Reply #391 on:** June 21, 2015, 03:42:35 PM »

Neutral switch has a 18mm seal, make sure you have the correct size. Honda part number for that seal is incorrect, you'll end up with an 18.3mm if you go by the fiche.

Ravie · « **Reply #392 on:** June 21, 2015, 04:34:10 PM »

I'm not even sure what I used there. Is it possible for the unit to leak or do you think it's likely to be the seal?

I think I've got the wiring licked. Everything works now, anyway. Turned out my low-beam wasn't working for two reasons: The switch was effed up and the low beam was burned out. I think while figuring things out it got shorted, but it may have been DOA from DCC.

The switch was definitely part of the issue. The switch contact wasn't working right. Then today I tried to fix it using a spring I bought at ACE not realizing it was going to ground out the switch contacts and blew a crap ton of fuses in the process. I put felt between the contact and the spring and a safety piece of thin plastic on the other side...it doesn't have it's "detent" anymore but honestly who cares? I'll get a new switch someday. Until then...it functions.

Wiring is a funny thing. A lot of guys talk about how they hate wiring and I'm one of those guys. The thing is, I GET electrical theory. I'm a General Class Amateur Radio Operator and I fix vintage amplifiers and things all the time... But when we're talking about vehicle wiring it's a whole new animal. No more are you following a circuit with components you can check...now you're dealing with lots of SWITCHED wires. And with the Ignition(TL1andTL2)/off-run-off/Off-On switches...that's a crapton of variables. Sure, you can follow wiring diagrams. Course if you have an EMGO harness those diagrams can really feck with your head because the EMGO harness has like...3 extra connections to make...

Anyway... Not much else to report. When I turn the engine off and leave it sit I get gas out of the bottom vent tubes... my guess is because I have the gasoline above the carbs and no petcock right now it's making its way past the floats and draining out... Other than that and the neutral switch I'm just waiting for my buddy to paint my goddamnedmotherfeckin tank so I can ride this beast I created.

Davez134 · « **Reply #393 on:** June 24, 2015, 01:59:37 PM »

I agree with your theory about the gas leaking out of the tubes. I wouldn't worry too much. Depending on how high your fuel is above your carbs, those floats can only offer so much resistance against gravity.

I am one of those guys who hates wiring. Well, not so much wiring as the colors! Severely colorblind, which means I have to have someone else out there with me ( wife) "telling me what to do."

calj737 · « **Reply #394 on:** June 24, 2015, 02:04:51 PM »

Oh, Dave, I bet she's really good at that!

Ravie · « **Reply #395 on:** June 24, 2015, 02:15:29 PM »

HAHAHAHAHAHAHA

I can't even get my wife out into the garage with me unless she's pushing a brake pedal down repeatedly for me...

calj737 · « **Reply #396 on:** June 24, 2015, 06:20:03 PM »

She's pretending that's your face with the mud beneath it. Trust me, been married a long time.

Restoration Fan · « **Reply #397 on:** June 24, 2015, 06:53:00 PM »

I'm digging the throaty sound of that 836!

Ravie · « **Reply #398 on:** June 24, 2015, 07:20:16 PM »

Yes.

Running rich on 1-2

I couldn't help myself...strapped a tiny plastic tank on and went down the block and back.

Oh the smile. I needed that today.

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evanphi · « **Reply #399 on:** June 25, 2015, 05:13:00 AM »

Quote from: Ravie on June 24, 2015, 07:20:16 PM

Yes.

Running rich on 1-2

I couldn't help myself...strapped a tiny plastic tank on and went down the block and back.

Oh the smile. I needed that today.

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Worth it!

News:

Author Topic: 1975 CB750 Build! "Kona" - Sold and gone. (Read 70338 times)