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Author Topic: Running on three  (Read 13644 times)

Offline gary123

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Re: Running on three
« Reply #30 on: November 06, 2022, 04:07:59 PM »
I have proof.




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Offline gary123

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Re: Running on three
« Reply #31 on: November 06, 2022, 04:09:03 PM »
But seriously mine have a "spider web" in them.
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Offline Laverdaroo

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Re: Running on three
« Reply #32 on: November 06, 2022, 04:16:00 PM »
Quote from: Sesman on November 06, 2022, 03:50:44 PM
Mine are genuine, but don’t.


No they're not................... ;D
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Mornings are the invention of the devil!
1992 VFR750 FN (oldie but goldie) 'Betty'
1977 CB550F (current money pit!!) 'Mejima'
2002 VFR800 VTEC (The Beloved) 'Rose'
1977 CB400F (the last money pit!) 'Chewy'
1998 Ducati 748\853 conversion(sold :()
1980 ish CB750KZ in a billion bits (need to get rid, anybody want one?))

Offline Sesman

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Re: Running on three
« Reply #33 on: November 06, 2022, 04:17:05 PM »
Oh yes they are ….(almost pantomime season).
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Offline Laverdaroo

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Re: Running on three
« Reply #34 on: November 06, 2022, 04:50:54 PM »
Ohhhhhhh, no they're.........................cant be arsed! ;D ;D ;D ;D ;D ;D ;D ;D
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Mornings are the invention of the devil!
1992 VFR750 FN (oldie but goldie) 'Betty'
1977 CB550F (current money pit!!) 'Mejima'
2002 VFR800 VTEC (The Beloved) 'Rose'
1977 CB400F (the last money pit!) 'Chewy'
1998 Ducati 748\853 conversion(sold :()
1980 ish CB750KZ in a billion bits (need to get rid, anybody want one?))

Offline Sesman

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Re: Running on three
« Reply #35 on: November 06, 2022, 05:16:09 PM »
Quote from: gary123 on November 06, 2022, 04:07:59 PM
I have proof.


Yep, that’s pretty conclusive. I stand corrected.

(Attachment Link)
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Offline deltarider

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Re: Running on three
« Reply #36 on: November 07, 2022, 08:42:57 AM »
There is no spider web structure. It's an optical illusion. And here is the proof. http://www.sohc.co.uk/index.php/topic,22417.msg204301.html#msg204301
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Offline Sesman

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Re: Running on three
« Reply #37 on: November 07, 2022, 09:47:01 AM »
Nope, you are wrong and Gary123 proved it😀
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Offline Sesman

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Re: Running on three
« Reply #38 on: November 07, 2022, 09:47:47 AM »
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Offline JezzaPeach

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Re: Running on three
« Reply #39 on: November 07, 2022, 11:44:45 AM »
🤦
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1972 CB500/4 K1 Gold
Wanted: my 500/4 UGP96M
from 1975-78. Garnet Brown.

Offline Sesman

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Re: Running on three
« Reply #40 on: November 07, 2022, 12:14:44 PM »
To be fair mezzanine, we have been through this multiple times. I have internal photos of both genuine and pattern jets. It’s an interesting kaleidoscope effect caused by the internal drilling reduction. TBH, there is no Techncial/practical reason for anything other than a stepped drilling reduction to create effective atomisation under a partial vacuum.


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Offline JezzaPeach

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Re: Running on three
« Reply #41 on: November 07, 2022, 03:56:19 PM »
I agree, a carburettor specialist has said the same. Interesting that the internal drilling helps too.
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1972 CB500/4 K1 Gold
Wanted: my 500/4 UGP96M
from 1975-78. Garnet Brown.

Offline gary123

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Re: Running on three
« Reply #42 on: November 07, 2022, 04:07:47 PM »
Ok, I have to agree it is an optical illusion. If you look down the tube while rotating it the "web" does not rotate. For me, at least, that draws a line under spidergate.

However, after following all the advice offered my bike now runs, revs and ticks over nicely on all four cylinders. Probably a bit of dirt in the jet. Thanks to all who contributed.  :)
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Offline JezzaPeach

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Re: Running on three
« Reply #43 on: November 07, 2022, 04:38:02 PM »
Excellent news 👍 I think I cleared a minor blockage once by using full choke and revving a bit, shame that doesn’t cure everything!
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1972 CB500/4 K1 Gold
Wanted: my 500/4 UGP96M
from 1975-78. Garnet Brown.

Online K2-K6

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Re: Running on three
« Reply #44 on: November 07, 2022, 05:37:43 PM »
Good you've a successful outcome with fueling and now running well.

For interest, the idle jet circuit on these runs a long way up into rev range when used on light throttle. Any impairment has quite significant effect on clean running for most speeds up to about 40mph ish. It'll give you a weak cylinder further out too as the  main jet blends in with higher slide positions. Having the idle circuits impeccably clean is a big part of getting them running smoothly and consistent.

I still think there's spiders in there though ;D probably trained Japanese micro ninja spiders that know their job.
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