The 500 4, I had in the mid 70’s showed to have amazon power. Change the timing, change sprocket size, enlarge the bore, 4 into one exhaust ( no muffler) and two side draft Webber carburetors, ( same size I used on my Alfa). My wife would run my Alfa and my bike around 135 mph for nice ride.
This is super helpful!!! I’ve had my 550 running fantastic at idle and at open throttle accelerates beautifully but just on rolling on or maintenance throttle it sputters a bit. Tried everything except this. Everything except the 4-1 exhaust is stock and all specs in the carb pretty much within factory range. Will definitely give it a shot. Thank you for the great content!
DrewBloo I lowered the clip on mine which raised the needle. It helped richen the mixture. now it is so fast! No hesitation at 1/2 or 3/4 throttle. It solved my problem
Thanks for the video, truly useful and clear! I've a question: in case of non-adjustable needle (eg. Cb 650 rc03 with PD51 carbs), how would you operate? I mean, personally, I got my bike running on pods (please don't scream out!) but still I find it a little unreactive when opening throttle (and yes, I checked and refurbished the accelerator pump). Could the needle adjustment help a bit? (slow jet and idle jet already fixed). Thanks in advance. Giovanni
Hi Noticed your not running the stock air filter. As this bike has aftermarket filters do you have to adjust the needles to run richer as the filters breath more air. If you do how much do you recommend in adjusting needle position. Buy the way great videos. Re GA arts from the UK
Awesome content. I just rebuilt my cb500 carbs with your help. I have a question though. My air/fuel screws do not fully seat with the spring in the carb. Should I screw them in without the spring first to find where they seat and then put the spring in and go 1 1/2 turns out from where they bottomed out without the spring? The spring seems to be binding up the screw before it seats. Thanks!
The 500 4, I had in the mid 70’s showed to have amazon power. Change the timing, change sprocket size, enlarge the bore, 4 into one exhaust ( no muffler) and two side draft Webber carburetors, ( same size I used on my Alfa). My wife would run my Alfa and my bike around 135 mph for nice ride.
Dude, I wish I could take a hands on class with you!!!!! Oh, well this is the next best thing!!! Thanks for your time & effort on your videos!!!!!
This is super helpful!!! I’ve had my 550 running fantastic at idle and at open throttle accelerates beautifully but just on rolling on or maintenance throttle it sputters a bit. Tried everything except this. Everything except the 4-1 exhaust is stock and all specs in the carb pretty much within factory range. Will definitely give it a shot. Thank you for the great content!
Did it work? I have the same setup and same problem!
DrewBloo I lowered the clip on mine which raised the needle. It helped richen the mixture. now it is so fast! No hesitation at 1/2 or 3/4 throttle. It solved my problem
Good tips. I have the same problem on my Cb550k. Wasn't sure if it was possible to adjust needles with carbs in place. Thanks. 🏍👍🇨🇦
Thanks Taylor! I was just about to try this then saw your video!? Great timing!
Awesome job the bike sounds great! :)
Thanks for the very nice videos! I guess that you don't need to synchronise the carbs after this operation, right?
That is correct, you don't have to sync them again because you don't remove the adjusting screw.
Thanks for the video, truly useful and clear! I've a question: in case of non-adjustable needle (eg. Cb 650 rc03 with PD51 carbs), how would you operate? I mean, personally, I got my bike running on pods (please don't scream out!) but still I find it a little unreactive when opening throttle (and yes, I checked and refurbished the accelerator pump). Could the needle adjustment help a bit? (slow jet and idle jet already fixed).
Thanks in advance.
Giovanni
great explanation Taylor...thank you
Hi Noticed your not running the stock air filter. As this bike has aftermarket filters do you have to adjust the needles to run richer as the filters breath more air. If you do how much do you recommend in adjusting needle position. Buy the way great videos. Re GA arts from the UK
@ClassicOctane, what was your thought process for determining that you should richen the mix on the needle? i.e. sputtering at x,xxx RPM = too lean?
Tylor, my round slides have a nylon washer between the slide and the needle. Is that washer supposed to be there ?
Good work anything about Cb k3?500 same needl adjustment ?
Awesome content. I just rebuilt my cb500 carbs with your help. I have a question though. My air/fuel screws do not fully seat with the spring in the carb. Should I screw them in without the spring first to find where they seat and then put the spring in and go 1 1/2 turns out from where they bottomed out without the spring? The spring seems to be binding up the screw before it seats. Thanks!
Do what you suggest but count the screws in from ‘clicked’ fully out
Love the look of those handlebars! What is their name? I didn't see it in your amazon links.
They are clubman style bars.
An artist, love ya!
Do you or someone else know a channel for the Yamaha SR400 and 500?
Cheers!
Hey I just got a 1975 Honda 550 four and I need to replace all the electronics how should I go about that?
get a brand new wiring harness from 4into1.com. You can also get a lot of OEM or OEM replacement electronics there. Or just go with aftermarket stuff
Doable on PD carbs as well I imagine?
👍
Is it possible to do this with the tank on the bike?
Why don't you try it and tell us.
@@James_Sovereign I may just do that.
No, very difficult
Hi
Change the problem cover screws with hex head…….. why not
I run stainless allen heads on the tops of my personal carbs.
@@ClassicOctane good call
this is cheating!! That locking tab that's missing is the most difficult part on 2 & 3
Furst