Author Topic: Late CB750 K0 Mold to Gold, the nugget. (Read 37305 times)

Don R · « **Reply #350 on:** November 24, 2021, 03:32:55 PM »

The nugget got the right side exhaust and heat shields today. It's exactly the bike I had wanted to build, The gold tank set from Mark B is perfect and I still have the original tank, headlight ears and a set of Frankenbike sidecovers.
For those who like to debate, it's a gold wrinkle tank L0L! Clearly not correct on a 6/70 K0 I don't mind. My next/last project bikes are going to be some seriously modified stuff.

HondaMan · « **Reply #351 on:** November 24, 2021, 04:13:06 PM »

Quote from: Don R on November 22, 2021, 08:48:18 PM

I got two of the 4-4's on the nugget, the fight was epic, I pried, beat, twisted, and M'F'ed them something awful until I realized the footpeg hole no longer fits the proper footpeg bolt. I drilled out the footpeg hole and it went together in short order but now of course now the balance tube doesn't line up and the rubber connector fell out. The obvious pry point is the footpeg bolt holes but then you start over.
Yamiya's no no.s are much easier. I wish DSS had some to sell me.
I think I'll make a metal tube to fit into the balance tubes to help keep them lined up while I put the peg bolt back in.

Does it seem like the distance to the footpeg hole (on the pipe) is too short?

Don R · « **Reply #352 on:** November 24, 2021, 07:24:38 PM »

Does it seem like the distance to the footpeg hole (on the pipe) is too short?

It did on #2. Then I determined the bolt didn't fit through the peg fitting. Duh. I'm not sure if the ends were boogered or it was oval but after running a drill through it the struggle was much less and when I took it apart to connect the rubber balance tube it went back together much easier. 3 and 4 were a piece of cake.
I tried a short metal pipe in the balance tube hole like Yamiya sends but there isn't a stop inside the bottom muffler and it fell through.

PeWe · « **Reply #353 on:** November 24, 2021, 10:55:32 PM »

My Yamiya no numbers have "stops" for pipe in the balancing holes. Holes punched or drilled.

BUT, the very open Yamiya Lotus Root pipes have no stops here, just a large hole so the pipe trick is not possible when baffle (diffusor) is out.

HondaMan · « **Reply #354 on:** November 25, 2021, 10:05:01 AM »

Quote from: Don R on November 24, 2021, 07:24:38 PM

Does it seem like the distance to the footpeg hole (on the pipe) is too short?

It did on #2. Then I determined the bolt didn't fit through the peg fitting. Duh. I'm not sure if the ends were boogered or it was oval but after running a drill through it the struggle was much less and when I took it apart to connect the rubber balance tube it went back together much easier. 3 and 4 were a piece of cake.
I tried a short metal pipe in the balance tube hole like Yamiya sends but there isn't a stop inside the bottom muffler and it fell through.

Thanks for the tip: I have some of the repop pipes on mine and the 1-2 side has been really hard on the little interconnect hose(s). I got the pipes to align to the frame and above each other correctly by installing a spacer washer between the 2 of them on the 1-2 side at the footpeg, which worked on all of them from that era (2008 or so). The molds seem to have changed again for the repop ones we are seeing now, though. I'm about to embark on a resto of a K4 from the Chicago area (it's mostly rust, but with a freely turning engine) which has 1/2 of a muffler on a 4-1 set on it that will have to go.

-right after I finish the 550 for my current book...

BenelliSEI · « **Reply #355 on:** November 25, 2021, 03:02:04 PM »

Quote from: PeWe on November 24, 2021, 10:55:32 PM

My Yamiya no numbers have "stops" for pipe in the balancing holes. Holes punched or drilled.

BUT, the very open Yamiya Lotus Root pipes have no stops here, just a large hole so the pipe trick is not possible when baffle (diffusor) is out.

Don and Per..... I’m not clear on what you guys are talking about. I have a new set of Yamiya “No Number pipes”, still in the box (for my s/c project). Did you guys make make a smaller pipe that fits inside the small connector pipes? Seems like a great idea when fitting new ones. The last set I fitted (I think it was the Gold K0 I sold a few years ago) fit really badly. I had to grind the mating faces of the foot peg tubes, so the ends rotated slightly when I tightened up the foot peg through bolt!

Don R · « **Reply #356 on:** November 25, 2021, 05:56:35 PM »

My last set of DSS supplied Yamiya no no.'s had the little tube included. I think it's just a reminder to make sure that connection is made before tightening anything else. I go only as far on the exhaust nipple at the engine as it takes to get the peg bolt in, then check the rubber tube, then tighten things, doing the engine last. I tap gently with a rubber mallet that has several layers of towel over it.

PeWe · « **Reply #357 on:** November 26, 2021, 12:36:51 AM »

I got the small pipes with the lotus root order from Yamiya.
I did not use them. Might be something during fitting, force them right, then remove.

Not possible to use in the Lotus root pipes when it will fall out and roll in the pipe when removing the baffle.

Look like cuts from a handlebar, 35mm long, OD 22.3 mm.
The text describes it clearly

But they forgot the rubber seal on the outside. Or did that come on later models?

I do not like the Honda rubber seal with gasket paper inside anyway.
I use 2 halves cut from a 1/2" hot water/oil hose. Strapped in place with a black cable tie.

Almost like stock

BenelliSEI · « **Reply #358 on:** November 26, 2021, 07:48:18 AM »

Thanks for the explanations! I’ll open the cartons and see what I got......

Don R · « **Reply #359 on:** November 26, 2021, 08:34:44 AM »

Mine (no no.s) had raw steel insert tubes and I used stock rubbers over them. I went through all of the little Honda bags twice looking for the nuts for the balance tube clamps. Then I noticed they are made onto the clamps now.
I swore I had two peg bolts and got two more with my load of parts recently. I only find three. It's odd, all of those totes of Honda parts I hauled home, 3 bikes and there's not a grab handle, bar or turn signal part.

BenelliSEI · « **Reply #360 on:** November 26, 2021, 12:01:18 PM »

Last set of peg bolts and hardware, I got from JTMARKS...... Going to miss that guy.

Don R · « **Reply #361 on:** November 26, 2021, 12:07:51 PM »

Yeah, I am still watching his items on ebay that are gone.

PeWe · « **Reply #362 on:** November 26, 2021, 12:31:26 PM »

JTMARKS is closed, no one continue that shop?

Burning interest of keeping old bikes alive is a must beside the contacts getting these old parts.

He had many not that common parts.

Too many important good guys have left the last year.
Older we get more of it we will see.

Don R · « **Reply #363 on:** November 27, 2021, 06:55:57 PM »

I already regret not pulling the trigger on a red seat foam and a few other parts he quoted prices on.

BenelliSEI · « **Reply #364 on:** November 28, 2021, 08:16:35 AM »

Me too..... JT was always fairly priced and he never disappointed.......

Don R · « **Reply #365 on:** November 29, 2021, 08:22:45 PM »

I'm hoping to get the nugget off the lift and ride it to the car wash for a wash of the area under the sprocket and inside the rear fender. I neglected to clean it properly. It's supposed to be in the 50's this week.

Don R · « **Reply #366 on:** November 30, 2021, 03:15:36 PM »

I didn't get it off the lift, spent the day putting brakes on another bike. But I did cure the dead 1-2 cylinders by putting gas in it. The petcock bowl was a bit loose and I snugged the fuel lines up a little on the barbs.
The 341's are for sure not as good sounding as no no.'s. My brother showed me the exhaust tip mod everybody did back in '74. This is the last day on the plate but I'm betting I can make it to the car wash tomorrow.
Hopefully it's as nice out tomorrow as today and I can get some good pictures of it.

Don R · « **Reply #367 on:** November 30, 2021, 10:13:43 PM »

Mark is correct, the outside pipe needs a washer behind it to make the balance tube line up.

Don R · « **Reply #368 on:** December 01, 2021, 10:32:15 AM »

other pics in the completed thread.

PeWe · « **Reply #369 on:** December 01, 2021, 11:15:54 AM »

That bike look really good!
Nice color!
Which Honda gold color is it?

RAFster122s · « **Reply #370 on:** December 01, 2021, 12:05:19 PM »

Very nice Don!

Don R · « **Reply #371 on:** December 01, 2021, 04:02:22 PM »

It should be K0 gold, candies are a big variable though. It got about three miles on it today, woohoo.

SOHC4 Cafe Racer Fan · « **Reply #372 on:** December 02, 2021, 09:04:06 AM »

Nominated for BOTM. Looking for a "second": http://forums.sohc4.net/index.php/topic,180400.0.html

PeWe · « **Reply #373 on:** December 02, 2021, 09:14:34 AM »

I second that!

Don R · « **Reply #374 on:** December 02, 2021, 04:10:14 PM »

Oh No, not another gold K0! since I got one they seem like belly buttons. But seriously, Thank You.
When it was this color it was a different kind of nugget!

Read this part in Elvis' voice. Thank you, Thank you very much,,

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Author Topic: Late CB750 K0 Mold to Gold, the nugget. (Read 37305 times)