Right back to square one.

  • kzharpe
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Re: Right back to square one.

17 Feb 2016 07:26
#711061
Breaking news folks. Po says he always ran 100 other higher octane....hmmmmm. maybe the bike can't get used to the lower octane. Also it's running stock jets
1977 KZ650

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  • Patton
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Re: Right back to square one.

17 Feb 2016 07:33 - 17 Feb 2016 07:36
#711064
I doubt that either stock jets or octane is contributing much if anything to the reported problem.

Also, pilot air screw adjustments likely won't produce much effect on a carb with a less than perfectly clean as-new pilot circuit.

Good Fortune! :)
1973 Z1
KZ900 LTD
Last edit: 17 Feb 2016 07:36 by Patton.

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  • SWest
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Re: Right back to square one.

17 Feb 2016 07:49
#711066
kzharpe wrote: Breaking news folks. Po says he always ran 100 other higher octane....hmmmmm. maybe the bike can't get used to the lower octane. Also it's running stock jets

Sounds like a braggart to me. If he did all that work then why does it have the stock jetting? I'd discount anything he says at this point.
I think Patton may have hit on it with the vacuum leak.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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  • KZB2 650
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Re: Right back to square one.

17 Feb 2016 07:52
#711068
The guy is all over the place and full of it ........ 100 oct is only needed for 12.5 to 1 comp and stock jets for a bored and Cough Cough stroked motor....... "maybe" some 92 oct check your valves, clean the carbs with alot of cleaner, air and maybe a few pokes of guitar stings like a few have said and maybe a step up on the pilot and mains ....... forget from your other posts do you have pods along with the header too? Anyone boring it and I think he told you it had cams too didn't he? and along with the straight pipes would know to jet it up.
1978 KZ650 b-2
700cc Wiseco kit 10 to 1.
1980 KZ750 cam, ape springs, stock clutch/ Barnett springs.
Vance and Hines Header w/ comp baffle and Ape pods, Dyna S and green coils, copper wires.
29MM smooth bores W/ 17.5 pilots, 0-6s and 117.5 main
16/42 gearing X ring chain and alum rear JT sprocket.

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Re: Right back to square one.

17 Feb 2016 07:59
#711069
I come across guys like that now and then. They like to hear themselves talk. I like to RIDE. :woohoo:
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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Re: Right back to square one.

17 Feb 2016 08:25 - 17 Feb 2016 08:27
#711073
Do not apply carb cleaner spray without wearing eye protection.
The spray always backfires. ALWAYS!



The choke (enrichener) circuit is a separate circuit inside the carb, which is different from the pilot circuit.
It might also require some tlc, but generally, in my experience, causes less problems than the pilot circuit.



Good Fortune! :)
1973 Z1
KZ900 LTD

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Last edit: 17 Feb 2016 08:27 by Patton.

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Re: Right back to square one.

17 Feb 2016 08:26
#711074
Often, the most difficult part of the carb cleaning procedure is the task of removing the carbs from old hard airbox hoses, and later reinstalling the carbs while using the same old hard airbox hoses.

There are workarounds such as heating the hoses with a hair dryer or heat gun, but the best solution is a brand new set of soft sexy airbox hoses.

Good Fortune! :)
1973 Z1
KZ900 LTD

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Re: Right back to square one.

17 Feb 2016 08:43 - 17 Feb 2016 08:44
#711077
I noticed in the above video you are running it with full "choke" on what happens when you turn the choke off? And do not listen to the PO he doesn't know what he is talking about.
Last edit: 17 Feb 2016 08:44 by baldy110.

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  • kzharpe
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Re: Right back to square one.

17 Feb 2016 09:09
#711080
Well of course he put in cams too haha
KZB2 650 wrote: The guy is all over the place and full of it ........ 100 oct is only needed for 12.5 to 1 comp and stock jets for a bored and Cough Cough stroked motor....... "maybe" some 92 oct check your valves, clean the carbs with alot of cleaner, air and maybe a few pokes of guitar stings like a few have said and maybe a step up on the pilot and mains ....... forget from your other posts do you have pods along with the header too? Anyone boring it and I think he told you it had cams too didn't he? and along with the straight pipes would know to jet it up.
1977 KZ650

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Re: Right back to square one.

17 Feb 2016 09:10
#711081
Stock air box and a 4 into 1 off a zr7. Problems existed before the headers
KZB2 650 wrote: The guy is all over the place and full of it ........ 100 oct is only needed for 12.5 to 1 comp and stock jets for a bored and Cough Cough stroked motor....... "maybe" some 92 oct check your valves, clean the carbs with alot of cleaner, air and maybe a few pokes of guitar stings like a few have said and maybe a step up on the pilot and mains ....... forget from your other posts do you have pods along with the header too? Anyone boring it and I think he told you it had cams too didn't he? and along with the straight pipes would know to jet it up.
1977 KZ650
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Re: Right back to square one.

17 Feb 2016 09:17 - 17 Feb 2016 09:18
#711082

Attachment 20160217_111516.jpg not found


Bike runs fine...kinda rough though after I kill the choke. I checked for vacuum leaks but don't see any. All my caps are on the "carb holder" aside from one that is pulling vacuum for the petcock. Then it has the four overflow tunes for the bowls. The only ones I'm questioning are the two towards the top of the carbs. They make sense since the carb needs to breath a little but I could be wrong. Here is a picture
1977 KZ650

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Last edit: 17 Feb 2016 09:18 by kzharpe.

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Re: Right back to square one.

17 Feb 2016 09:56
#711086
And yes it does seem to be running better with the petcock on prime. For now anyways
1977 KZ650

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