Honda-SOHC

SOHC.co.uk Forums => CB500/550 => Topic started by: bobv7 on March 06, 2020, 05:46:06 PM

Title: Refitting carbs But airbox bits missing
Post by: bobv7 on March 06, 2020, 05:46:06 PM
I just refitted the carbs and found the best way fit the intake side to the carbs was to take out the air filter box and battery holder. That leaves a big hole and after much industrial terminolgy and plain brute force I squeezed that into place, (Don't try this if you value the frame paintwork!) but then I've found I'm missing a mounting bracket from the front of the air filter box. I can't find any on line and rather than resort to a couple of cable ties if anyone has one spare and would like to exchange it for some beer tokens please let me know. Ta.
Title: Re: Refitting carbs But airbox bits missing
Post by: Nurse Julie on March 06, 2020, 06:16:16 PM
Do you have a part number for the part you need Bob?
Title: Re: Refitting carbs But airbox bits missing
Post by: bobv7 on March 06, 2020, 06:30:06 PM
Hi Julie

I got these numbers off CMS. 17317323010 or 17319323000

I can't be sure which is the right one because it looks like there's a right mishmash of bits lurking under the seat!

OK This is the bit I have

Title: Re: Refitting carbs But airbox bits missing
Post by: Nurse Julie on March 06, 2020, 07:35:29 PM
I have this part for sale on ebay. Part number 17319-323-000
(https://uploads.tapatalk-cdn.com/20200306/18cf520a9ac9558eecb794273a478841.jpg)(https://uploads.tapatalk-cdn.com/20200306/f1039a8f5d085b6e7cc652a96eeda49a.jpg)

Sent from my I3312 using Tapatalk

Title: Re: Refitting carbs But airbox bits missing
Post by: bobv7 on March 06, 2020, 08:25:26 PM
Hi Julie

Thanks for the info but the good news is I found it in the shed spiders stash under a stack of flooring boards! ;D Even better news; I've put it all back together again and it actually starts! :D :D :D :D :D. But will it run properly? ::) Time for tea.
Title: Re: Refitting carbs But airbox bits missing
Post by: Nurse Julie on March 06, 2020, 08:52:00 PM
Hi Julie

Thanks for the info but the good news is I found it in the shed spiders stash under a stack of flooring boards! ;D Even better news; I've put it all back together again and it actually starts! :D :D :D :D :D. But will it run properly? ::) Time for tea.
Great Bob, at least you are sorted.
Title: Re: Refitting carbs But airbox bits missing
Post by: bobv7 on March 08, 2020, 04:08:31 PM
To continue. Everything is back together and the bike starts but even with all cables and throttle screws off "tick over" 2k+! Could this be throttle slides not seating and/or is the mixture setting wrong? Either way I'm going to need someone with a set of vacuum gauges to sort it. Anyone recommended a service in the Bognor Regis area?
Title: Re: Refitting carbs But airbox bits missing
Post by: Nurse Julie on March 08, 2020, 04:24:51 PM
To continue. Everything is back together and the bike starts but even with all cables and throttle screws off "tick over" 2k+! Could this be throttle slides not seating and/or is the mixture setting wrong? Either way I'm going to need someone with a set of vacuum gauges to sort it. Anyone recommended a service in the Bognor Regis area?
Did you bench sync the carbs before fitting Bob?
Title: Re: Refitting carbs But airbox bits missing
Post by: bobv7 on March 08, 2020, 05:18:57 PM
I thought that had been done by the chaps who referbed them for me. I've checked the mixture screws and they are set at one and a half turns out, and operating the throttle by hand they all seemed to be opening together OK. Could it be they're just set to high?
Title: Re: Refitting carbs But airbox bits missing
Post by: Nurse Julie on March 08, 2020, 05:51:30 PM
I thought that had been done by the chaps who referbed them for me. I've checked the mixture screws and they are set at one and a half turns out, and operating the throttle by hand they all seemed to be opening together OK. Could it be they're just set to high?
Yes, either all set too high or 1 or more too high. Did you notice if the slides were fully closing when the idle screw was backed off all the way?
Title: Re: Refitting carbs But airbox bits missing
Post by: bobv7 on March 08, 2020, 07:41:37 PM
Must have missed that cos' the chokes were closed to stop stuff getting inside...ooops and bugger! Looks like I'm stripping out the air box again. :-[ Any suggestions on what to use to set the right clearances?
Title: Re: Refitting carbs But airbox bits missing
Post by: Nurse Julie on March 08, 2020, 07:56:45 PM
Must have missed that cos' the chokes were closed to stop stuff getting inside...ooops and bugger! Looks like I'm stripping out the air box again. :-[ Any suggestions on what to use to set the right clearances?
Follow Bryan's guide... Instead of a drill shank, I always use the red squirt tube off of the WD40 can
http://www.sohc.co.uk/index.php/topic,17769.0.html
Title: Re: Refitting carbs But airbox bits missing
Post by: bobv7 on March 08, 2020, 08:14:43 PM
Cheers Julie

I'll go away now and sulk 'cos I have to do everything all over again. Thanks for your help, much appreciated.
Title: Re: Refitting carbs But airbox bits missing
Post by: Bryanj on March 08, 2020, 09:50:07 PM
I can never find one of those squirty straws but trip over drill bits on my desk!!!
Title: Re: Refitting carbs But airbox bits missing
Post by: deltarider on March 09, 2020, 06:44:12 AM
For me a small allen key works fine.
Title: Re: Refitting carbs But airbox bits missing
Post by: AshimotoK0 on March 09, 2020, 08:03:21 AM
I have this part for sale on ebay. Part number 17319-323-000
(https://uploads.tapatalk-cdn.com/20200306/18cf520a9ac9558eecb794273a478841.jpg)(https://uploads.tapatalk-cdn.com/20200306/f1039a8f5d085b6e7cc652a96eeda49a.jpg)

Sent from my I3312 using Tapatalk

BZP looks a bit dodgy on that Julie (perfectly good to use of course and a rare item) .. did our friends in E/Yorks plate it? Dropped a batch off there last month ..... lead times 6 weeks+ which is a lot longer than they normally take. Took a 400/4 rear sprocket guard plate in there for dark olive drab plating, with a pile of other parts ... interesting to see how it comes out.
Title: Re: Refitting carbs But airbox bits missing
Post by: Nurse Julie on March 09, 2020, 08:52:44 AM
Yes Ash, this parts was as pitted as pitted could be so it's come out quite well considering. The BZP itself is fine, (yes, done by our usual boys) but it will not show when fitted and seemed a shame to just throw it in the skip.
Title: Re: Refitting carbs But airbox bits missing
Post by: bobv7 on March 09, 2020, 03:54:07 PM
Sorry, it's me again! :-[

I don't mean to be a pain but I really don't want to have to do this again! Which side do you set the slides from, front or back? :o

Title: Re: Refitting carbs But airbox bits missing
Post by: Nurse Julie on March 09, 2020, 04:03:23 PM
Sorry, it's me again! :-[

I don't mean to be a pain but I really don't want to have to do this again! Which side do you set the slides from, front or back? :o
Not the side in your photo.... So the front side of the carbs.
Title: Re: Refitting carbs But airbox bits missing
Post by: Nurse Julie on March 09, 2020, 04:07:32 PM
This side(https://uploads.tapatalk-cdn.com/20200309/f42bfc3f74368f9d1b8743eb7a9daeea.jpg)

Sent from my I3312 using Tapatalk

Title: Re: Refitting carbs But airbox bits missing
Post by: Nurse Julie on March 09, 2020, 04:14:56 PM
How big is the gap at the bottom of the slides with the idle screw backed off fully Bob, just out of interest and do the gaps look equal?
Title: Re: Refitting carbs But airbox bits missing
Post by: bobv7 on March 09, 2020, 04:29:40 PM
Ok, I just checked with a drill bit and it's 3.2mm which is about one eigth of an inch in old money. Too big? This is the engine side.

[attach=1]
Title: Re: Refitting carbs But airbox bits missing
Post by: Nurse Julie on March 09, 2020, 04:38:53 PM
Ok, I just checked with a drill bit and it's 3.2mm which is about one eigth of an inch in old money. Too big? This is the engine side.

(Attachment Link)
Yes, you are on the correct side of the carbs and 3.2 mm sounds far too big. More importantly, do the slides close fully when you back off the big idle adjuster?. This is what my red squirt tube measures

(https://uploads.tapatalk-cdn.com/20200309/d857eaa8bc348bfd0221aa53e0508fb4.jpg)

Sent from my I3312 using Tapatalk

Title: Re: Refitting carbs But airbox bits missing
Post by: Bryanj on March 09, 2020, 04:41:07 PM
Way too big i use 1/16 or smaller.
Looking at picture 2nd from right looks more open than 2nd from left
Title: Re: Refitting carbs But airbox bits missing
Post by: bobv7 on March 09, 2020, 04:50:20 PM
Thanks all, measure from the engine side not the intake. But tomorrow is another day and my knees have given up! :-\
Title: Re: Refitting carbs But airbox bits missing
Post by: Nurse Julie on March 09, 2020, 04:52:28 PM
Thanks all, measure from the engine side not the intake. But tomorrow is another day and my knees have given up! :-\
Well done Bob, I know you will get it sorted soon.
Title: Re: Refitting carbs But airbox bits missing
Post by: Nurse Julie on March 09, 2020, 04:54:17 PM
Way too big i use 1/16 or smaller.
Looking at picture 2nd from right looks more open than 2nd from left
Yes, I  noticed there was no parity there Bryan.
Title: Re: Refitting carbs But airbox bits missing
Post by: bobv7 on March 10, 2020, 11:01:18 AM
Morning all

Well I went out armed with the regulation bit of red tube (off a WD40 Can) and it don't fit under the sides! :o What am I doing wrong! :-\

[attach=1]
Title: Re: Refitting carbs But airbox bits missing
Post by: Nurse Julie on March 10, 2020, 11:09:33 AM
You need to be going through the procedure on each carb slide as described in the link to Bryan's post. You need to unlock to lock nuts on the top of each slide, where my finger is pointing to, and screw the adjuster up and down to get the correct height of each slide and lock it off again. You need to do this with all 4 slides. It also looks like the red tube isn't in the centre of the gap, which it needs to be. (https://uploads.tapatalk-cdn.com/20200310/4521da09dfee1bc9ccd5cde825ea127b.jpg)

Sent from my I3312 using Tapatalk

Title: Re: Refitting carbs But airbox bits missing
Post by: Nurse Julie on March 10, 2020, 11:30:27 AM
What you are aiming for after adjusting Bob is parity of gap on all 4 slides and all 4 slides to be closed fully when the idle adjuster is backed off totally. So, when you twist the big idle adjuster, the slides lift up and the gap is exactly the same under each slide which adjusts the idle tick over on all 4 carbs equally.
Title: Re: Refitting carbs But airbox bits missing
Post by: bobv7 on March 13, 2020, 03:02:56 PM
It's now running and I'd like to say thanks for all the help and assistance! :D All I need now is a chance to ride the thing instead of struggling to get it on and off the bench. On the positive side I am getting quite good at puting it back together again, in the right order and with no bits left over. ;D
Title: Re: Refitting carbs But airbox bits missing
Post by: Nurse Julie on March 13, 2020, 03:04:38 PM
Well done Bob 👍👍👍
Title: Re: Refitting carbs But airbox bits missing
Post by: SPR on March 13, 2020, 09:04:28 PM
I love when things are explained like this ... even I can understand them !!
SimplePortal 2.3.5 © 2008-2012, SimplePortal