testy

Author Topic: 1971 CB500K Project:  (Read 29569 times)

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Offline Tews19

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #100 on: November 21, 2011, 06:43:05 pm »
Greggo, can we have a video of the sound of the bike? Looks good by the way..
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Offline FunJimmy

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #101 on: November 21, 2011, 07:34:03 pm »
Yeah, but I don't want my build thread to get deleted  ::) It IS a really nice pipe once I get it settled.

The thread that was deleted by the moderators was due to an offending member posting threats. That member lost his privileges on this board.

You have a right to your opinions and should feel free and safe to express them.
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Offline Greggo

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #102 on: November 21, 2011, 09:14:32 pm »
Greggo, can we have a video of the sound of the bike? Looks good by the way..

Tews, once (read: if) I get the leak issue sorted, I'll shoot some video.  I know there is a youtube clip floating around on this forum of Chris' pipe installed on a later 550, I'll try 'n find it.

Yeah, but I don't want my build thread to get deleted  ::) It IS a really nice pipe once I get it settled.

The thread that was deleted by the moderators was due to an offending member posting threats. That member lost his privileges on this board.

You have a right to your opinions and should feel free and safe to express them.


Jimmy,

As always, thank you for your support.  I hope it's fixable with an extra gasket or two.  It does look to me like the angle of the #4 pipe doesn't match that of the #4 exhaust port, so it will never be a flat seal.  If I get it to work, I'll be a happy man..
« Last Edit: November 28, 2011, 05:29:20 pm by Greggo »

Offline Cheffish

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #103 on: November 21, 2011, 10:13:36 pm »
The bike looks great man.  That's a shame about the pipe, I hope you get it worked out.  I have been eyeballing that pipe for months but now I'm not so sure about it.  Looks awesome though

Offline Greggo

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #104 on: November 21, 2011, 10:15:56 pm »
The bike looks great man.  That's a shame about the pipe, I hope you get it worked out.  I have been eyeballing that pipe for months but now I'm not so sure about it.  Looks awesome though

If you're talking about the pipe from Carpy, I don't think those have any fitment issues.  Mine is from a different maker.

Offline Tews19

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #105 on: November 22, 2011, 06:25:45 am »
Sorry greggo, I need to be more detailed when I make a post. I meant when she is fitted. She does look great.
1969 Honda CB750... Basket case
1970 Honda CB750 survivor.

Offline Greggo

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #106 on: November 22, 2011, 09:52:50 am »
Sorry greggo, I need to be more detailed when I make a post. I meant when she is fitted. She does look great.

Here's a youtube link to the pipe on Beastman's bike.  You can definitely hear it has an exhaust leak.

« Last Edit: November 22, 2011, 09:54:54 am by Greggo »

Offline Tews19

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #107 on: November 22, 2011, 10:31:51 am »
Sorry greggo, I need to be more detailed when I make a post. I meant when she is fitted. She does look great.

Here's a youtube link to the pipe on Beastman's bike.  You can definitely hear it has an exhaust leak.



Thanks bud, sounds really nice.
1969 Honda CB750... Basket case
1970 Honda CB750 survivor.

Offline Greggo

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #108 on: November 24, 2011, 06:20:36 pm »
Did you try screwing in the adjstment screw while providing power & ground to the horn?  Maybe you're fighting a bad ground.

There's an adjustment screw on the horn?? 

Sorry I forgot to reply to your question.  Pop the chrome cover off and at about 9 -10 o'clock you'll find a screw.  Turn this a couple turns either direction while you've jumpered power directly to the horn.
 You can swap covers to a working horn.  Let me know how it turns out.

Hey David, sorry I forgot to reply to you!  I swapped the nice chrome cover over to the good horn, and it beeps REAL loud.  Good to go!  Thanks!

Offline Greggo

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #109 on: November 28, 2011, 03:55:45 pm »
Popped a second gasket in, and no dice.  I've got exhaust puffin out of #4's port like a choochoo train.  I'm going to try and have the pipe bent into shape as Jimmy, and RetroRocket have suggested.  The heat will discolor the metal, and so I will have to get the pipe coated as well. 

Offline FunJimmy

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #110 on: November 28, 2011, 04:33:51 pm »
Popped a second gasket in, and no dice.  I've got exhaust puffin out of #4's port like a choochoo train.  I'm going to try and have the pipe bent into shape as Jimmy, and RetroRocket have suggested.  The heat will discolor the metal, and so I will have to get the pipe coated as well.

Greggo

Sorry to hear that you're having unmanageable pipe sealing issues. Seems we all have had some kind of fitment problems with these pipes. Don’t worry about heating the pipe to straighten it. It won’t mess the pipe up at all. Worst case scenario, you may need to scrub with Scotchbrite pads to even the colour out again.

Good Luck.
FJ
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Offline Greggo

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #111 on: November 28, 2011, 05:34:31 pm »
Spoke with Chris, who offered to fix/replace/refund the pipe.  He was really cool about it.  I'm too far away for the free fix offer, so I'm going to take it to my dad's shop this week to see if we can get it to bend enough.  It's really not that far off, and I want to have this pipe.  It sounds soooooooo good.

Offline Kemp

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #112 on: November 29, 2011, 09:19:28 pm »
Don't know if you have solved your tach issues yet. You can use the CB750 tach as it has the same ratio as the CB650 and thus retain the stock instrument look of the CB550

Offline RAF122S

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #113 on: November 29, 2011, 10:19:56 pm »
Don't know if you have solved your tach issues yet. You can use the CB750 tach as it has the same ratio as the CB650 and thus retain the stock instrument look of the CB550
Do you have the cb650 tach drive gear...it is different than the 550 or 500 & it is needed to mesh with the cam as the ratio changed...
There also was a seler on ebay selling NOS CB650 tachs not too long ago...~$65
David- back in the desert SW!

Offline Greggo

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #114 on: November 30, 2011, 12:21:25 pm »
Took my first real ride with the new exhaust on there, and this bike sounds disgustingly mean.  I used some clever shimming, and manhandling while clamping and got it 95% sealed up.  A new set of the thicker, silver/blue gaskets await me at my parent's house, and I'm confident those will do the trick.  The copper gaskets have less mating surface, and are a little wimpy for this job.  I've got all sorts of minor popping on deceleration, so I know that carb tuning is in my immediate future.  These carbs need a good cleaning anyhow, so it's good timing. 

I think I'm going to have Chris make me a pipe for my 750.  The sound is addictive.

Offline Kemp

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #115 on: December 06, 2011, 06:47:44 pm »
Yes, you must use the 650 tach cam gear with the the 650 cam as the worm drive is slightly different than the 500/550. The gears are not interchangeable. That said it is definitely a simple and effective upgrade as 650 cam has more lift and duration than 550/500 cam with no issues about idle or drive ability, just slip it in and go. Really nice rush as cam comes on at 6200rpm and pulls hard through to redline.

Offline Greggo

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #116 on: December 06, 2011, 08:08:33 pm »
Yes, you must use the 650 tach cam gear with the the 650 cam as the worm drive is slightly different than the 500/550. The gears are not interchangeable. That said it is definitely a simple and effective upgrade as 650 cam has more lift and duration than 550/500 cam with no issues about idle or drive ability, just slip it in and go. Really nice rush as cam comes on at 6200rpm and pulls hard through to redline.

Yes, the 650 cam makes a very noticable in the seat of the pants boost for these bikes.

Update on this bike: Chris is making me a new header Monday.  I tried some clever shimming, and clamping, but after going through four sets of gaskets, nothing got it to seal 100%.  Here's what I was dealing with:


That flange should be parallel with that hood over the exhaust port.

Offline geminimotors

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #117 on: December 06, 2011, 09:48:53 pm »
Yo, G- I just stumbled across your thread whilst I was foolin around. If you want to sync the carbs, we have the technology here at Fortress Oakland. What became of your Hooker exhaust?

Offline Greggo

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #118 on: December 06, 2011, 10:33:05 pm »
Yo, G- I just stumbled across your thread whilst I was foolin around. If you want to sync the carbs, we have the technology here at Fortress Oakland. What became of your Hooker exhaust?

Dude!  I need to pull those carbs and clean 'em.  Still have the Hooker 4-1, I may pop it on next week just for sh1ts and gigs.  I'll hit you up next week!

Offline geminimotors

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #119 on: December 06, 2011, 10:52:02 pm »
With that much seafoam in their diet... if they run through the rpm range, they're not terminally filthy.  Sync em and go from there. It costs nothing, and is way more fun than a wrestling match with intake boots. srysly.

Offline geminimotors

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #120 on: December 06, 2011, 10:58:02 pm »
Thinking t a ride to Port Costa Sat of Sun. don't go tearing it all apart just yet...

Offline Greggo

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #121 on: December 08, 2011, 12:17:47 am »
Thinking t a ride to Port Costa Sat of Sun. don't go tearing it all apart just yet...

;D I'll throw the ugly old 4-1 back on there for a good ride.  How about Monday? 

Offline Greggo

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Re: 1971 CB500K w/CB650 Cam & Yoshi Replica Exhaust
« Reply #122 on: December 29, 2011, 03:46:27 pm »
Put 5ohm Dyna coils on this bike, and gave her a whole new look with a stock green tank!  I love it!!




I got my replacement pipe from Chris, but I'm not going to even try to put it on until I've got my big bore kit/cylinder head replacement parts ready.  That damaged helicoil is barely holding the #4 exhaust collar on there so I can enjoy the bike for a while.

This bike will get:
18/19" Lesters
Cb550 Cylinders w/CB500 big bore kit
Lightly ported head
Chris' pipe, or the Hooker 4-1
Thinking about a set of 750 carbs...I've got the carbs, just not sure about the spacing/rubbers.

Offline Greggo

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Re: 1971 CB500K w/CB650 Cam
« Reply #123 on: September 05, 2012, 03:24:32 pm »
Spruced up my favorite rider with a new set of shoes ;D  I also bought a set of Cruznimage pistons to rebuild the top end on this bike.  They are the CB500 1.00 over, so I think it was 57mm. 



Offline Stev-o

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Re: 1971 CB500K w/CB650 Cam
« Reply #124 on: September 05, 2012, 04:13:08 pm »
Looks great Greggo
'74 "Big Bang" Honda 750K [836].....'71 Honda 750K project.....'76 Honda 550F.....K3 Park Racer.....K5 Fiddy Dolla Special!......CB500 Fiddy Dolla Special too!!............plus plus plus.........

 

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