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Messages - deltarider
1
« on: July 25, 2026, 12:16:08 PM »
Thanks. I've read p.12 in that carb manual. There it deals with syncing. My aim is to see if I can finetune the mixture (adjusting the airscrews) by listening to the pops and compare the 4 to determine which exhaust produces the thinner and which one the fatter sounds. It's an idea. I don't know if it will work. I guess I have to try myself.
2
« on: July 24, 2026, 03:39:29 PM »
By the way... As for listening to exhaust notes, oddly in one of the carb manuals Honda produced and is linked to on this thread [...]
Linked to on this thread... ? Are you sure? I haven't found it. I know only one Honda Carb manual and in there it is not mentioned...
3
« on: July 24, 2026, 03:20:24 PM »
All std including 4 into 4 pipes. 627b carbs
The CB500 always had bigger slow jets than the CB550: #40 vs #38. Even the CB500 K3 with PD carbs had #42 where the CB550K3 had #38. Explanation anyone?
4
« on: July 24, 2026, 08:11:53 AM »
[...]As for listening to exhaust notes, oddly in one of the carb manuals Honda produced and is linked to on this thread it says specifically it’s not possible on muliti cylinder engines. Not my words, those are Honda engineers saying that. They do say it’s doable on twins but not fours. [...]
The balance tubes at the end of the exhausts could interfere. Could. But what if you slide the tube a little further inwards, passed those tubes? Worth trying imo.
5
« on: July 23, 2026, 08:33:00 PM »
Thats a great breakdown of the procedure! Thanks, I'll dust off my desk fan and annoy the neighbours later this week
I remain sceptical. It's mere theory. I actually would welcome the first video that succesfully demonstrates this procedure... In other words: prove me wrong. I have a gut feeling best method is to listen by a rubber hose to the pops the 4 individually exhausts produce at idle and compare them. Any of you that has managed to arrive at a perfect idle - meaning driveability fine and acceleration linear! - is invited to make a sound recording of all 4 exhausts to the benefit of all.
6
« on: July 21, 2026, 03:52:38 PM »
Can someone measure the outside diameter in mm of a genuine Honda fuel tube?
7
« on: July 20, 2026, 03:56:38 PM »
We were having a discussion on the American site but Hondaman has had a rant and then locked the thread.
I feel real sorry about all this, but this is what happens when people who know better, do not take their responsibility to correct errors regardless of the person in question and leave it to others. It has been going on for far too long and has lead to an unhealthy situation. Participating in a forum IMO brings a responsibility to 'sanitize' when needed.
8
« on: July 19, 2026, 10:53:22 AM »
The CB500 plugs will always foul if you are not regularly at 7000 RPM. I recommend the 'Italian tuning' for these bikes. Hit the highway and have it run at at least 6000 better even 7000 RPM for a while and... feel the difference in response and overall driveability thereafter! If you have planned tuning ignition and carbs - by all means - take your bike to the highway and do the Italian tuning first.
9
« on: June 27, 2026, 06:28:12 PM »
10
« on: June 15, 2026, 08:04:44 AM »
Check this. Second from top, NOT tip!
11
« on: June 04, 2026, 06:55:02 PM »
12
« on: May 27, 2026, 07:21:04 AM »
Makes me wonder what dimension the corresponding opening in the CHAMBER has. Have you checked?
13
« on: May 26, 2026, 08:20:17 AM »
In the past I've tried to find out which K3 carbs had the 14,5mm and which had 12,5mm float levels. Alas, I haven't found trustworthy sources. The one shown here is dubious, because it is by an American who thinks mentioning the 'year' is good enough. When in doubt, I'd opt for the 12,5mm level as 14,4 could result in a too lean mxture.
Can you shoot a picture of the front opening (exit so to speak) of your airfilter element? There have been differences there too: wider/smaller, but I don't know it is somehow related.
14
« on: May 23, 2026, 06:59:45 AM »
PD46 carbs have a float level of either 12,5 or 14,5mm. Consult Honda documents!
15
« on: May 22, 2026, 06:47:07 AM »
You got me confused... what carbs is this about: 069A? 627B? 022A? 087A? or PD carbs?
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