Author Topic: 1971 K0 CB500 (Read 16432 times)

WideAWAKE · « **Reply #125 on:** September 14, 2022, 09:17:11 PM »

Nicely done!

Shtonecb500 · « **Reply #126 on:** September 16, 2022, 10:38:37 AM »

The guy is coming back but he left another offer with Phil, a red cb400-4 plus cash. Not sure how much cash he is talking about but I’ll post here first

grcamna2 · « **Reply #127 on:** September 16, 2022, 11:20:15 AM »

You doing the trade?
I thought you might keep the 500 ?

That's a very nice CB400F and looks like it has the same paint color combination as a 78' CB550K.
I hear the cam chain needing adjustment but aside from that looks great.

wolf550 · « **Reply #128 on:** September 16, 2022, 04:56:14 PM »

yep and I just got some 400f side covers for those aluminum side covers coming soon!
all the 400's I see out my way are up in the 6K price just as is.
the restores up to 8-9 cool G's

Shtonecb500 · « **Reply #129 on:** September 16, 2022, 05:00:07 PM »

Im skipping the trade for the 400-4, it doesnt call out to me and needs some work to look pretty again, doesnt have original pipes...yada yada.

I talked to the guy this evening and says since ive confirmed a price in person he needs to justify it with the wife.

Bike is still listed at 8k on fb marketplace, maybe 1-2 messages a week.

Ive got another video coming it will be linked here shortly, start up video and ride it around a little bit.

Shtonecb500 · « **Reply #130 on:** September 16, 2022, 05:06:37 PM »

choose 1080p

bikerboy9999 · « **Reply #131 on:** October 07, 2022, 09:11:47 AM »

Hi there. Fellow Michigan guy, I've been watching the eBay auction and was curious if you sold the bike or if it was available. Please shoot me a note when you have a chance or call me, 616.551.6939 (grand rapids).

Thanks,

Tom

Shtonecb500 · « **Reply #132 on:** October 07, 2022, 01:53:59 PM »

this week would have been a great time to get some serious miles on this bike cause it was still kinda warm but I hurt my back on Monday and wasn't able to balance on a bike until yesterday. Anyway, I took the 500 out and have been riding it around most of the day. This bike is just lovely, runs like a top, no issues and LOVES 80MPH....took it on M-59, 696 and I-94 today and it was flawless...the only thing I want to change is how hard the clutch pulls in.

SOHC4 Cafe Racer Fan · « **Reply #133 on:** October 07, 2022, 02:42:12 PM »

Has this bike been up for Bike of the Month? It looks good.

Shtonecb500 · « **Reply #134 on:** October 07, 2022, 06:00:00 PM »

Quote from: SOHC4 Cafe Racer Fan on October 07, 2022, 02:42:12 PM

Has this bike been up for Bike of the Month? It looks good.

Nah not yet, thank you!

SOHC4 Cafe Racer Fan · « **Reply #135 on:** October 08, 2022, 09:41:27 AM »

Quote from: Shtonecb500 on October 07, 2022, 06:00:00 PM

Quote from: SOHC4 Cafe Racer Fan on October 07, 2022, 02:42:12 PM
Has this bike been up for Bike of the Month? It looks good.
Nah not yet, thank you!

Well, I nominated it. Waiting for a "second." Try to take some higher res photos.

Shtonecb500 · « **Reply #136 on:** October 08, 2022, 03:43:57 PM »

High res, not detailed, ended up cleaning it and giving it a once over after the pictures....should be nice the next couple of days.

Shtonecb500 · « **Reply #137 on:** October 08, 2022, 04:44:09 PM »

grcamna2 · « **Reply #138 on:** October 08, 2022, 04:49:24 PM »

The bike is looking Very good

SOHC4 Cafe Racer Fan · « **Reply #139 on:** October 08, 2022, 11:56:15 PM »

Shtonecb500,

Please post that you "accept" the nomination in the following thread: http://forums.sohc4.net/index.php/topic,180400.0.html

Congrats!

Shtonecb500 · « **Reply #140 on:** October 09, 2022, 02:58:53 PM »

Wow, number one intake valve spring failed, valve guides failed, Valve dropped and punched a hole in my piston, it looks like chaos In the motor. I’ll open it up tomorrow and take a look at the damage…motor still turns over Mickey I’m wondering if my cylinder is #$%*ed.

SOHC4 Cafe Racer Fan · « **Reply #141 on:** October 09, 2022, 05:58:33 PM »

Quote from: Shtonecb500 on October 09, 2022, 02:58:53 PM

Wow, number one intake valve spring failed, valve guides failed, Valve dropped and punched a hole in my piston, it looks like chaos In the motor, I’ll open it up tomorrow and take a look at the damage…motor still turns over Mickey I’m wondering if my cylinder is #$%*ed.

That utterly sucks, man.

Shtonecb500 · « **Reply #142 on:** October 09, 2022, 08:21:53 PM »

Ugh. I can't believe I thought the bike was going to be able to ride there and cant forgive myself for not checking before going. I LITERALLY looked at Frank's damn valve cap wrench and was like, "yup, you are getting used today"...blah blah family #$%*, I get on the bike and blow the motor up in 4 miles.
It looks like a bullet was shot through the piston.

Right now I hope the cylinders aren't destroyed and don't think connecting rods are damaged, motor turns over nicely
and cant wait to see what the oil pan looks like. We have nos cb500 pistons and rings in stock as well as my original 73' cb500 motor in stock to donate what is needed.

This was user error - these bikes have made me take a long look in the mirror many times.

edit: I remember when we went into the motor that exact valve spring had heavy rust/pitting on it.

Little_Phil · « **Reply #143 on:** October 11, 2022, 03:17:10 AM »

Quote from: Shtonecb500 on October 09, 2022, 08:21:53 PM

This was user error - these bikes have made me take a long look in the mirror many times.

edit: I remember when we went into the motor that exact valve spring had heavy rust/pitting on it.

So are you blaming not replacing that spring for the failure?
That is real bad news and a worry for all us with 500s of that era. I feel real sorry for you after must be 6 months of on/off work.

Shtonecb500 · « **Reply #144 on:** October 11, 2022, 05:30:12 AM »

Well, my buddy told me the initial damage is something no one can predict, but me thinking the bike would make it to the shop after i heard a noise is my fault. This could have been limited to just head work, possibly even saving the head. Im not too upset about this, I dont have to come out of pocket or anything up front because we have parts and material on hand already. LABOR and a bore job will eat up my wallet potentially if the cylinder is smoked but im more worried about making the bike whole again rather than my profit margins....profit margins dont exist anymore i dont think after this incident lol.

grcamna2 · « **Reply #145 on:** October 11, 2022, 01:50:30 PM »

Hi Shtonecb500,
I hope your orig. cylinder head is still salvageable and it's a good thing you have those nice used parts to choose from.
I hope this problem won't hold up your great progress on this CB500K0 project you've enjoyed.
I'm 'pulling for you'

Gurp · « **Reply #146 on:** October 12, 2022, 07:39:28 PM »

I've got a 500 out of a 73 I pulled. I would be more than happy to strip the motor for anything you need off it. I'm not going to use it.

Shtonecb500 · « **Reply #147 on:** October 13, 2022, 07:06:54 AM »

thanks, everyone. I will for sure let you guys know if i need anything, i have zero desire to do anything but get the bike back up and running and in riding condition again and have no intentions on waiting a month to do so.

pulled the top end off the donor motor including the jugs and the #1 piston, got it stripped of paint which took 3-4 coats aircraft stripper with water wash down in between, removed valves and springs and tossed it in the sandblaster.

Shtonecb500 · « **Reply #148 on:** October 28, 2022, 01:00:36 PM »

Happy Friday, the motor IS worst case scenario, has a bent rod need to split the cases. All the rods are letter "D" with "#2" so I have to get the bottom donor end up to the shop potentially will have to use donor rods if major difference.

The good: I have .25 over pistons brand new, oem gaskets brand new, cylinder will get overbore and the wrecked piston will become a desk ornament, lol. A few of the other valve springs have pitting on them just like the one that failed.

grcamna2 · « **Reply #149 on:** October 28, 2022, 01:26:11 PM »

You going to replace the head ?

News:

Author Topic: 1971 K0 CB500 (Read 16432 times)