Sounds of my 79 Kz750 Twin

  • cnyl
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Sounds of my 79 Kz750 Twin

11 Jun 2006 18:17
#53767
We've been messin with tuning my carbs found that my boots were cracked allowing a vac leak. We went up on the main jets. I'm popping when reving it off idle
This is where i'm at. Take a listen tell me what you think.

Reving
media.putfile.com/Kz750-Rev


Idle
media.putfile.com/Kz750-Idle

Post edited by: cnyl, at: 2006/06/11 21:18

Post edited by: cnyl, at: 2006/06/11 21:19
1982 KZ1000 M2 CSR
North Port, FL

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Re: Sounds of my 79 Kz750 Twin

11 Jun 2006 18:19
#53769
The links need work, I can't get anything. :(

Works now!! ;)

Post edited by: OKC_Kent, at: 2006/06/11 21:20
Oklahoma City, OK
78 KZ650 B2 82,000+ miles

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  • steell
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Re: Sounds of my 79 Kz750 Twin

11 Jun 2006 19:34
#53781
The bike is only running on one cylinder at both idle and revving :)

I know the sound well, I actually rode my 80 750 twin on one cylinder when I first got it running, just wanted to see if it would do it :)

Which side exhaust pipe is not getting hot?

Post edited by: steell, at: 2006/06/11 22:34
KD9JUR

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Re: Sounds of my 79 Kz750 Twin

11 Jun 2006 20:37
#53800
I think it is so cool I'm listening to your bike off the web! Ok so Im a geek!
Check out our site. kcvjmc.org
1977 Yamaha XS650
2000 Kaw W650
2 KZ440 LTDs , a 79 KZ400H and an 83 Belt Drive

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Re: Sounds of my 79 Kz750 Twin

12 Jun 2006 07:47
#53900
steell wrote:
The bike is only running on one cylinder at both idle and revving :)

I know the sound well, I actually rode my 80 750 twin on one cylinder when I first got it running, just wanted to see if it would do it :)

Which side exhaust pipe is not getting hot?<br><br>Post edited by: steell, at: 2006/06/11 22:34

Hmmmmm. When I adjust both pilot screws they both make a difference. Let me check again.
1982 KZ1000 M2 CSR
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Re: Sounds of my 79 Kz750 Twin

12 Jun 2006 08:03
#53903
cnyl wrote:
Hmmmmm. When I adjust both pilot screws they both make a difference. Let me check again.[/quote]

Is it possible that the recording mic was right next to one of the exhausts (if it's two-into-two), so it only picked up the one?

..I don't know, I can't listen to it on Linux, it's apparently a Windows-formatted file... :(
(1.) '75/'76 KZ400D - Commuter
(2.) '78 KZ750B3 Twin - Commuter
(3.) '78 KZ750B3 Twin - Commuter
(4.) '75 KZ400D - Sold
kz750twins.com

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Re: Sounds of my 79 Kz750 Twin

12 Jun 2006 08:12
#53906
It's got a 2 into 1 on it. I just checked the headers and they are both hot but the right side is hotter. The mic was about 2 feet away from the pipe.
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Re: Sounds of my 79 Kz750 Twin

12 Jun 2006 08:14
#53907
cnyl wrote:
It's got a 2 into 1 on it. I just checked the headers and they are both hot but the right side is hotter. The mic was about 2 feet away from the pipe.

What RPM do you idle at?
(1.) '75/'76 KZ400D - Commuter
(2.) '78 KZ750B3 Twin - Commuter
(3.) '78 KZ750B3 Twin - Commuter
(4.) '75 KZ400D - Sold
kz750twins.com

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Re: Sounds of my 79 Kz750 Twin

12 Jun 2006 08:15
#53909
Don't claim to know much (just learning,) but my 77 seems to give the same popping. Only upon initial/cold starting. I've dug through the archives a bit, and found that if your boot from the air box to the carbs is leaking, then your running too rich? I think. I checked mine, and it is in fact torn. I haven't yet replaced them, but mine evens out and stops backfiring once it warms up.:)

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Re: Sounds of my 79 Kz750 Twin

12 Jun 2006 08:28
#53914
According to the tach i'm running at 1000 or a hair over. For some reason the idle screw won't lower the rpm
anymore than it is.
1982 KZ1000 M2 CSR
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Re: Sounds of my 79 Kz750 Twin

12 Jun 2006 09:03
#53921
Remove the spark plugs and post what they look like (#1 and #2).

A history of the bike and what you have done so far would help a lot :)
KD9JUR

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Re: Sounds of my 79 Kz750 Twin

12 Jun 2006 12:35
#53976
Hey steell,I pulled the plugs, the #2 looked normal but #1 was carbon fouled. So I cleaned it and put in the #2 cyl.(swapped).
It's running on both.:woohoo:
That seemed to be my problem. Runs great now I almost am afraid to do a sync.. Might mess it up.:laugh: I'll post another sound clip.

Oh..... The spouts that stick out of the intake boots, Do they need to be joined with a hose or plugged off separately?

Thanks all.:woohoo:

Post edited by: cnyl, at: 2006/06/12 15:39
1982 KZ1000 M2 CSR
North Port, FL

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