Author Topic: 1973 CB750 Custom Build on Hack A Week (Read 103801 times)

Dino · « **Reply #75 on:** February 14, 2015, 02:38:51 PM »

Thanks for the info on the leak stopper.

grepper · « **Reply #76 on:** February 15, 2015, 02:45:08 PM »

Just gotta say how great this youtube series is. I'm in the middle of a rebuild myself. That step by step on the shifting mechanism is priceless.

Dino · « **Reply #77 on:** February 21, 2015, 12:45:45 PM »

The camshaft and valves. Big thanks to Mike Rieck for selling me the oil metering jets.

Ravie · « **Reply #78 on:** February 21, 2015, 04:25:16 PM »

There's holes on both sides because L and R doesn't matter. :-) (In theory, I mean...the wear may or may not be equal, but all things being equal...they're interchangeable.)

Great stuff Dean.

evanphi · « **Reply #79 on:** February 23, 2015, 05:55:48 AM »

Thanks for making this video series. I'm about to dive into my top end, and your videos are going to be incredibly helpful! Your production quality is top notch.

grepper · « **Reply #80 on:** February 26, 2015, 08:13:14 PM »

Just finished watching the next one. Nice description on testing the alternator. Feeding that oil pressure switch wire through while it's apart would have been easier. Now you have to compete with the bend and the other wires.

Dino · « **Reply #81 on:** February 27, 2015, 04:53:05 AM »

Here's part 20. It's almost an engine now.

evanphi · « **Reply #82 on:** February 27, 2015, 10:54:31 AM »

Thanks for the great video again. You make quick work of demystifying what looks like a daunting task.

mystic_1 · « **Reply #83 on:** February 27, 2015, 11:26:56 AM »

Yup all of the wiring on the left side of the motor is much much easier to route if you do so while the transmission cover is off, it's almost trivial then.

Note that there should be a wiring clip on one of the case bolts underneath the sprocket cover, that keeps the wiring away from the sprocket and chain. Looks like a thin flat, U-shaped bit of sheet metal, perhaps 3/4 inch wide, with a bolt hole in it.

Sorry, can't find a good picture of it at the moment.

mystic_1

Dino · « **Reply #84 on:** February 27, 2015, 06:25:17 PM »

Quote from: mystic_1 on February 27, 2015, 11:26:56 AM

Yup all of the wiring on the left side of the motor is much much easier to route if you do so while the transmission cover is off, it's almost trivial then.

Note that there should be a wiring clip on one of the case bolts underneath the sprocket cover, that keeps the wiring away from the sprocket and chain. Looks like a thin flat, U-shaped bit of sheet metal, perhaps 3/4 inch wide, with a bolt hole in it.

Sorry, can't find a good picture of it at the moment.

mystic_1

I have it in a box of bolts on the bench here. Thanks.

mystic_1 · « **Reply #85 on:** February 27, 2015, 06:47:10 PM »

Excellent.

You're getting pretty close to completion on the motor! Any plans to bench test it or are you going to finish the rest of the bike before firing it up?

BTW this video series is quite a service you're doing for both this community and for CB750 enthusiasts in general. A picture is worth a 1000 words, so you're cranking out the equivalent of 30,000 words per second here

mystic_1

Dino · « **Reply #86 on:** February 28, 2015, 06:10:18 AM »

Quote from: mystic_1 on February 27, 2015, 06:47:10 PM

Excellent.

You're getting pretty close to completion on the motor! Any plans to bench test it or are you going to finish the rest of the bike before firing it up?

BTW this video series is quite a service you're doing for both this community and for CB750 enthusiasts in general. A picture is worth a 1000 words, so you're cranking out the equivalent of 30,000 words per second here

mystic_1

Thanks. I enjoy making these videos as much as people like watching them. I've learned a lot from internet communities and I still do. This is my way of giving back.

I do indeed plan on bench testing the engine. I have to pick up an exhaust system first. That should be an exciting episode.

Next week I'll tackle the clutch inspection and cover seals.

Dino · « **Reply #87 on:** March 07, 2015, 04:35:00 AM »

Inspected the clutch this week.I had a little help from the cat too.

The discs were still within spec so I left them and the springs alone for now. I'll probably renew them later this year after some engine break in time. I also made a tool to remove the clutch pac nut.

Dino · « **Reply #88 on:** March 14, 2015, 11:15:40 AM »

I had some fun with the intro this week... :p

evanphi · « **Reply #89 on:** March 14, 2015, 01:37:53 PM »

My wife got mad at me for watching that intro with our 18-month-old. HAHA

Riceman · « **Reply #90 on:** March 14, 2015, 08:12:39 PM »

SO,just how important is that crank case/air line return line on the oil tank anyways?
I did not add one to the one I made.

Ravie · « **Reply #91 on:** March 14, 2015, 09:15:58 PM »

Great stuff!

Couple things:

-When I took my oil lines off, there were aluminum crush washers inside. Seems like a smart idea to me. Same type as you'd find on a Honda car (except unfortunately the ones I have at work don't fit...)

-Secondly: Pennzoil? Really? In the scope of quality oils, that ain't at the top.... You know better, Dean! That and it looks like it's not even motorcycle oil! Not trying to start an oil debate. Just surprised. :-P

But seriously, you're doing a hell of a job and I've referred to several of your videos when putting #$%* back together on my own project. It's a great resource, and if I wasn't trying to afford my own build I'd donate, cause I sure have used the great info!

754 · « **Reply #92 on:** March 14, 2015, 09:34:14 PM »

My 836 stayed together over two decades running Pennzoil..ran the absolute. Hell out of it..
I got no good reason to switch, but straight weight iz getting hard to find..

Restoration Fan · « **Reply #93 on:** March 14, 2015, 11:54:31 PM »

Quote from: Ravie on March 14, 2015, 09:15:58 PM

-When I took my oil lines off, there were aluminum crush washers inside. Seems like a smart idea to me. Same type as you'd find on a Honda car (except unfortunately the ones I have at work don't fit...)

Same here. Just put my oil tank on last week and it also has aluminum crush washers that go inside both lines as they connect to the oil tank side.

Dino · « **Reply #94 on:** March 15, 2015, 05:42:47 AM »

Quote from: Ravie on March 14, 2015, 09:15:58 PM

Great stuff!

Couple things:

-When I took my oil lines off, there were aluminum crush washers inside. Seems like a smart idea to me. Same type as you'd find on a Honda car (except unfortunately the ones I have at work don't fit...)

-Secondly: Pennzoil? Really? In the scope of quality oils, that ain't at the top.... You know better, Dean! That and it looks like it's not even motorcycle oil! Not trying to start an oil debate. Just surprised. :-P

But seriously, you're doing a hell of a job and I've referred to several of your videos when putting #$%* back together on my own project. It's a great resource, and if I wasn't trying to afford my own build I'd donate, cause I sure have used the great info!

Thanks, glad you like the videos and find them resourceful.
Just curious, why do you think Pennzoil is bad?

Ravie · « **Reply #95 on:** March 15, 2015, 06:47:10 AM »

As far as I know, it still utilizes paraffin in its recipe. It does terrible in most of the industry standard tests...noack volatility, 4 ball wear, one if the industries worst pour points before freezing... and anecdotally, i used to work at a lube outfit that used Pennzoil as the bulk house brand and saw much more moisture and deposit issues as a result of its use than any other brand I've seen.

Strangely, their platinum synthetic tests quite well.

MRieck · « **Reply #96 on:** March 15, 2015, 07:39:53 AM »

Dino...i noticed in an early video you used red Loctite on the cylinder studs. I also follow the same procedure but there is one caveat that I'd point out. If you apply the loctite to the stud threads it willl ride up as you screw the stud in. The 2 studs that supply oil to the top end can push the Loctite up enough to block the holes in the upper case that supply oil to the top end. I apply the Loctite to the internal threads in the upper case for those 2 studs....you can use a toothpick. I also blow compressed air thorough the oil jet holes after assembling the top end to make sure all the passages are open.
Keep up the good work!

SOHC4 Cafe Racer Fan · « **Reply #97 on:** March 15, 2015, 09:13:33 AM »

Quote from: evanphi on March 14, 2015, 01:37:53 PM

My wife got mad at me for watching that intro with our 18-month-old. HAHA

Yeah, like an 18 month old would retain the single utterance of "bull$hit." I would call BS.

Great video, Dino!

Restoration Fan · « **Reply #98 on:** March 15, 2015, 11:22:17 AM »

Quote from: CB750 Cafe Racer Fan on March 15, 2015, 09:13:33 AM

Quote from: evanphi on March 14, 2015, 01:37:53 PM
My wife got mad at me for watching that intro with our 18-month-old. HAHA
Yeah, like an 18 month old would retain the single utterance of "bull$hit." I would call BS.

Well, maybe not 18 months but a funny story happened with my oldest when he was 2.

We used to send him to a daycare where they closed it down for the week of July 4th so that all employees could have the week off at the same time. My wife & I had arranged to take off @ opposite ends of the week so that one of us could be home with him during this week.

I got a call from my office one day that they needed me to come in the next day and interview someone for an internal move from one group to another. I told my boss (who was also a good friend) that I had to be home with my son and he said, "Oh don't worry, just bring him in. It's an internal interview."

Well, the interview happened and I'm writing up a detailed memo to email back to my boss and had been typing for almost 30 minutes while Austin played & doodled on my white board in my office. Just as I'm about to send it, but before I saved the document, he flipped the switch on my UPS and turned off power to the device, which was NOT a laptop. All my stuff was lost and before I could think, I swore "Dammit!" very loudly. He goes around the office saying, "Dammit, dammit, dammit" over & over for about 2 minutes. I didn't correct him because I was hoping that he'd forget about it; whereas, if I said something, it was almost sure to imprint it on his brain.

He doesn't say it anymore and about 2 weeks later, I'm working on repairing a fence and the hammer slips off the nail and strikes me on the other hand. I only grunted in pain and didn't swear (was hard, but I did it). Austin, who's standing behind me, says "Dammit!".

I looked up in surprise but also a bit of perverse pride, I have to admit. Not only did he remember it, he knew what context to use it!

Moral of the story: be careful what you say; little ears DO hear and remember.

Ravie · « **Reply #99 on:** March 15, 2015, 11:50:20 AM »

HAHAHAHAHAHA

That is a great story!

I tend to not care about cuss words. As long as my kids use them only at home, I honestly don't care. Personal preference. Our older girl is WAY too nice to ever use them, and the little one isn't even 2 yet. She does say "sh!t" somewhat often, though... So I'm not real worried about it.

Dean- I know you've got a LOT of vehicle repair and maintenance experience. By no means am I trying to say I know better than you or anything. I've been thinking about that since I posted. But, if you really do look up any information on standard Pennzoil...it's crap by comparison to nearly any other conventional oil, as evidenced by industry standard tests and Oil Analysis. My guess is that you're not going to use that when you run it anyway. I wasn't trying to make a big stink! :-)

My cat doesn't seem to take any interest in my garage. Too stinky in there for her I guess. lol

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Author Topic: 1973 CB750 Custom Build on Hack A Week (Read 103801 times)