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Author Topic: Am I the Pontius Pilate of this CX500?  (Read 22586 times)

Offline irk miller

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Re: Am I the Pontius Pilate of this CX500?
« Reply #230 on: Aug 04, 2019, 19:33:42 »
They also make sintered metal inserts for those aluminum body filters.  You may also consider a right angle filter, which is what I've had to go to on several of my bikes.


Offline Odontologist

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Re: Am I the Pontius Pilate of this CX500?
« Reply #231 on: Aug 05, 2019, 01:15:38 »
I like the right angle set up. No kinks in line. The red filter can I  showed has a sintered metal filter. I looked up what size particles these filter and its down to 30 microns. According to cxman this is the low limit before flow is restricted. Now I dont know if it was a kink in the line or the sintered metal filter. I think I'll  get the Visu right angle with sintered metal and see what happens.
1982 Honda CX500 Roadster build

Offline der_nanno

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Re: Am I the Pontius Pilate of this CX500?
« Reply #232 on: Aug 05, 2019, 02:14:59 »
These are the ones I always get (as can be seen in my thread-posts):

https://www.louis.de/artikel/kunststoff-benzinfilter-anschluss-6-0-mm-8-0-mm/10050018?filter_article_number=10050018&list=f369154f6a982b17acc69056eefe56c5

They sport both a 6mm and 8mm inlet and outlet. There's also dedicated 6 and 8mm versions available, but they aren't shorter by any means.
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Offline crazypj

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Re: Am I the Pontius Pilate of this CX500?
« Reply #233 on: Aug 05, 2019, 15:44:53 »
What ever filters you get, check direction of flow. I've seen 'experienced' mechanics fit them backwards. Fuel flows around outside so you can see if they are working, I cut open a paper filter that looked brand new but was completely clogged inside. Spoke to the guy who fitted it and his reply was, who cares, sell them a new one.  >:(
'you can take my word for it or argue until you find out I'm right'
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Offline Odontologist

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Re: Am I the Pontius Pilate of this CX500?
« Reply #234 on: Aug 06, 2019, 09:34:37 »
Well, just as I thought troubles were over, it started to hiccup again at 4000RPM. Could not get past this magic number.
It may be that all previous problems were contributing.....the poor flow out of the petcock caused by a plastic bag inside the tank, some shit inside the carbs which I failed to clean properly, the kink in the fuel hose from the fuel tap to the carb, my novice attempts at tuning carbs.......yes....all added to the problem.
But there was still one nail in my coffin.

I decided to run with some velocity stacks from a Ducati 9?? whose internal diameter match exactly to the carb intake internal diameter. Why? 'Cause they look so cool.



But to prevent birds and mice from setting up camp inside them, I concocted a filter made from some light foam and mesh, that seemed to me would not impede air flow.





In a last ditch attempt I removed these and went for another run....stumble finally gone, and here's a vid that proves it.  8) Any suggestions for a filter welcome. I thought maybe just the mesh. In any case, I decided to fork out for a set of Murray's carbs and they're on their way, but I wanted to make sure I learned something about carbs out of all this - specifically these old CV's. I did.



1982 Honda CX500 Roadster build

Offline spotty

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Re: Am I the Pontius Pilate of this CX500?
« Reply #235 on: Aug 06, 2019, 21:37:33 »
i'm assuming the thing that you learned was as rubbish as those carbs are, they don't weigh much when you're carrying the bin out to the street on garbage night

but well done for persisting
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Offline crazypj

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Re: Am I the Pontius Pilate of this CX500?
« Reply #236 on: Aug 07, 2019, 00:15:17 »
Any kind of filter you put in a bell mouth will severely restrict air flow. The 'extra wear ' of unfiltered air would be minimal unless your riding on the beach or in a sandstorm. I found new rings around 10,000 mile intervals would put things back to normal, but, that was on a CB550 running at 8~12,000 rpm on a regular basis, with max of 9,000 should last substantially longer.   
To run filters (I think you fitted the red ones backwards?) use a much longer fuel line looping around with filter at the bottom
« Last Edit: Aug 07, 2019, 00:16:54 by crazypj »
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline Odontologist

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Re: Am I the Pontius Pilate of this CX500?
« Reply #237 on: Aug 07, 2019, 07:46:59 »
i'm assuming the thing that you learned was as rubbish as those carbs are, they don't weigh much when you're carrying the bin out to the street on garbage night

but well done for persisting

Jaja....These are the first carbs I ever clean and rebuild...AND get working again. I may not use them once the Mikunis arrive, but I'm never throwing them out. Or at least until the missus tells me otherwise.
1982 Honda CX500 Roadster build

Offline Odontologist

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Re: Am I the Pontius Pilate of this CX500?
« Reply #238 on: Aug 07, 2019, 07:50:36 »
Not sure I want to do rings every 10-20K's Crazypj. Doesn't come that easy to me. I don't rides bikes that hard any more. But I would keep experimenting with different materials. Maybe some panty hose.
1982 Honda CX500 Roadster build

Offline Odontologist

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Re: Am I the Pontius Pilate of this CX500?
« Reply #239 on: Aug 07, 2019, 08:20:20 »
I've put about 20km so far. Keep in mind that I have no road rego yet, so that's 20Km too many.

I'm waiting for Murray's carbs, and I need to adjust the rear shocks to stop the mini bounces, and in time, cut about 1" off both stands to make them useful, but I'm calling it....and I'm more than wrapped.

Thanks all for you kind words and hints along the way.
Mario

PS: What's next? I'm hooked.



















1982 Honda CX500 Roadster build