Author Topic: 1976 CB500/550 Project "Squirrel" (Read 295419 times)

riverfever · « **Reply #1600 on:** July 06, 2017, 07:08:59 PM »

IMG_0408 by cneumann2000, on Flickr

SOHC4 Cafe Racer Fan · « **Reply #1601 on:** July 06, 2017, 08:16:07 PM »

Crusty the Clown 🤡. Yes, I think you need a new one. Are the other bodies fine in comparison?

riverfever · « **Reply #1602 on:** July 06, 2017, 09:47:04 PM »

I pretty much knew it. I have two members looking for me and will hopefully know something tomorrow. The rest of the bodies were fine. Not sure what happened to this one but that's how it was when I purchased the project.

Can anyone tell me if the IMS screws are less than a turn out, if that's indicative of a need to move up on the idle jets? Latest idle chops seem to point to that. It appears that I'm not quite out of the tuning woods just yet but now I'm really close and, better yet, have a significantly better understanding of how all of these things (like the different circuits of the carbs, timing, etc.) interact. The last few weeks have been very educational.

Stev-o · « **Reply #1603 on:** July 07, 2017, 04:30:41 PM »

Quote from: SOHC4 Cafe Racer Fan on July 06, 2017, 08:16:07 PM

Crusty the Clown 🤡. Yes, I think you need a new one.

+1 Crater Lake! WTF?! Bill B has 1.......

riverfever · « **Reply #1604 on:** July 08, 2017, 09:11:08 AM »

I'm waiting to hear back from Bill and James.

I have a set of O22A carbs that I could use but it would be a lot less work to just find a replacement 627B one and swap it in.

riverfever · « **Reply #1605 on:** July 09, 2017, 11:08:38 AM »

In the event that I am not able to find a 627 replacement body, I will use the O22A rack that I have. Just want to confirm there are no issues wth me using my known good guts from the 627 carbs in those other bodies. Anyone?

riverfever · « **Reply #1606 on:** July 10, 2017, 01:18:39 PM »

I gave up searching for a replacement 627B body and just decided to revisit the O22A rack that I had. I swapped everything over yesterday, and was able to get them bench synced and back on the bike today. With the 627 carbs, the fourth header never got as hot as the others and that plug was always wet. I still need to warm the bike up with a ride and then vacuum sync the carbs but it sounded like a totally different bike when I started it. It ran for less than a minute and that fourth header was hotter than it's ever been so that's a really positive sign.

Stev-o · « **Reply #1607 on:** July 10, 2017, 02:13:07 PM »

It did sound good. Get that bike on the road! You have sync gauges?

riverfever · « **Reply #1608 on:** July 10, 2017, 03:12:16 PM »

Waiting on an afternoon storm to get done and then I'll warm it up/gas it up. I do have gauges so hopefully I can get it done tonight and then take a look at the tuning again tomorrow.

riverfever · « **Reply #1609 on:** July 11, 2017, 11:02:29 AM »

This morning I took the bike up to get gas. In the four years that I have owned this thing it has never run like it did on that trip. It idled beautifully. There was zero hesitation off idle. I have always been concerned about it dying when I pull in that clutch lever and constantly have to be aware that I have a place to push it out of the way. The half dozen or so times that I grabbed the lever today I never even thought about it. It was so confident. When I got home I hardly had to touch the carbs and they synced right up. Idle chops started with 1 turn out on all the screws. I went all the way to 1/2 out and never really saw any more color on the plugs (with 38 idles) so I have 40's on the way.

riverfever · « **Reply #1610 on:** July 11, 2017, 12:33:05 PM »

This is WOT with 105 mains. The motor is obviously breathing much better and squirrel is screaming for fuel now.

IMG_0449 by cneumann2000, on Flickr

IMG_0450 by cneumann2000, on Flickr

IMG_0451 by cneumann2000, on Flickr

IMG_0452 by cneumann2000, on Flickr

Monsoon season has officially started and I probably won't get another shot at a chop the rest of the day so I'll try again in the morning after getting 110's in this evening.

Stev-o · « **Reply #1611 on:** July 11, 2017, 03:20:33 PM »

Quote from: riverfever on July 11, 2017, 11:02:29 AM

In the four years that I have owned this thing it has never run like it did on that trip. It idled beautifully. There was zero hesitation off idle
When I got home I hardly had to touch the carbs...

Dont touch it!

Restoration Fan · « **Reply #1612 on:** July 13, 2017, 09:47:04 AM »

Quote from: Stev-o on July 11, 2017, 03:20:33 PM

Quote from: riverfever on July 11, 2017, 11:02:29 AM
In the four years that I have owned this thing it has never run like it did on that trip. It idled beautifully. There was zero hesitation off idle
When I got home I hardly had to touch the carbs...

Dont touch it!

This. If it's running well, you only need to do 2 things:
1) Ride it!
2) Enjoy it!

riverfever · « **Reply #1613 on:** July 13, 2017, 10:41:36 AM »

I'm very optimistic that the tuning will be easier now with these new carbs. I have 40's on the way and I know it's best to only make one change at a time but things are pretty lean at idle and at wot so I'm planning on swapping in the 40's and 110's to see what that does. The motor runs noticeably hotter now and I think part of that is because it's running better but it's also because it's running lean. I know if I drop down the mountain it's not gonna be good and I'd really like to be able to confidently ride it to Colorado Springs.

Not much riding to do right now anyways with the monsoons in full effect. The morning is safe but we are finally getting the rain we need from lunch through the evening. Tornado warnings last night. I will not ride in the rain (due to lack of experience) but....I LOVE to fish in the pouring rain.

Stev-o · « **Reply #1614 on:** July 13, 2017, 01:47:23 PM »

Quote from: riverfever on July 13, 2017, 10:41:36 AM

The motor runs noticeably hotter now

How have you determined this? Butt thermometer?!

riverfever · « **Reply #1615 on:** July 14, 2017, 07:20:42 AM »

Haha....well...yes partial butt meter but mostly just deduced from the fact that header 4 was hotter than it's ever been . However (or but)...point taken. I should have followed your previous advice of, "Don't touch it" when deciding to grab onto that header that I've always been able to hold on to.

Speaking of warm butts...it was so cool here yesterday that I had to turn on the heater and seat warmer on the way home from the river.

joeyvans · « **Reply #1616 on:** July 14, 2017, 07:43:07 AM »

Still haven't gotten that IR thermometer yet?

Sent from my iPhone using Tapatalk

Stev-o · « **Reply #1617 on:** July 14, 2017, 02:26:54 PM »

Quote from: riverfever on July 14, 2017, 07:20:42 AM

I should have followed your previous advice of, "Don't touch it" ...

Shoulda...coulda...woulda...

RAFster122s · « **Reply #1618 on:** July 14, 2017, 03:01:33 PM »

What is the story on the plug threads? Notice the wide variance, some appear oily and dirty and another kind of dry but not consistently a silver color. Are your plug wells full of dirt and oil?

David

riverfever · « **Reply #1619 on:** July 14, 2017, 03:59:58 PM »

David how dare you talk poorly about my plug threads.

I guess I don't see anything unusual. They are not oily. Maybe it's just the pics.

riverfever · « **Reply #1620 on:** July 20, 2017, 09:45:20 AM »

I think I'm finally close. This is a 5 mimnute idle chop with a fan running after a 15 minute warm up ride (plugs cleaned after the warm up). All screws 3/4 out. 40 idle jets. Love to know what you all think.

IMG_0480 by cneumann2000, on Flickr

Camrector · « **Reply #1621 on:** July 20, 2017, 10:28:08 AM »

Beautiful shade of Beyoncé! I think your there.

flatlander · « **Reply #1622 on:** July 20, 2017, 11:08:01 AM »

as you're talking idle: how does it drive off the idle? on throttle cracked open just a bit?

riverfever · « **Reply #1623 on:** July 20, 2017, 12:01:38 PM »

flatlander...the bike idles better than it ever has. It's always had an attitude at 1/8 and 1/4 throttle but that's gone. I still need to go look at things at wot and 1/2 throttle but I cannot believe I may be at a point where I can ride and enjoy this thing. Been a long journey.

SOHC4 Cafe Racer Fan · « **Reply #1624 on:** July 20, 2017, 12:08:49 PM »

Don't jinx it. Just ride that sucka.

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Author Topic: 1976 CB500/550 Project "Squirrel" (Read 295419 times)