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Loud ass pop after heavy acceleration or revving
- larrycavan
- Visitor
06 Oct 2010 05:26 #404423
by larrycavan
Replied by larrycavan on topic Loud ass pop after heavy acceleration or revving
riverroad wrote:
:laugh:
Man, I haven't spoken up in quite a while, but I'm just crackin up at you old farts that grew up in the seventies on these old bikes, tellin this young dude to get a hair cut. LOL! At least he pulls his pants up where they're supposed to be.
:laugh:
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- Old Man Rock
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06 Oct 2010 06:05 #404433
by Old Man Rock
1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter
Phoenix, Az
Replied by Old Man Rock on topic Loud ass pop after heavy acceleration or revving
:laugh: :laugh: :laugh: :laugh: Yup....
You know it;s funny, never thought I'd hear my self say "Damn kids these days... Blah-blah-Blah) as old farts did when we were young.... But here we are... :S
Holly crap, we turned into our fathers... :huh: :blink:
I can see Plum now, shorts, white ass redneck legs, sandals and black socks... :blink:
You know it;s funny, never thought I'd hear my self say "Damn kids these days... Blah-blah-Blah) as old farts did when we were young.... But here we are... :S
Holly crap, we turned into our fathers... :huh: :blink:
I can see Plum now, shorts, white ass redneck legs, sandals and black socks... :blink:
1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter
Phoenix, Az
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- Patton
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- KZr Legend
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06 Oct 2010 06:26 #404437
by Patton
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- wargoth
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06 Oct 2010 21:58 #404758
by wargoth
Replied by wargoth on topic Loud ass pop after heavy acceleration or revving
Sounds like the baffle on the left side might be rotted a bit.
Popping at the exhaust is technically afterfire, and popping at the intake is backfire.
That said, sounds like air leaks in the manifold. Hot exhaust can suddenly burn off residual fuel in the muffler when fresh oxygen hits it, making the afterfire effect.
Popping in the intake can be lots of things, carboned up heads, throttle not shutting off completely, valve timing and clearance.
Remember start with the simple things, like new plugs and caps if you have any reason to suspect they arent working perfect. Rule out each system seperately too, ignition, valves, etc.. do all tune up items one at a time and then run it
Popping at the exhaust is technically afterfire, and popping at the intake is backfire.
That said, sounds like air leaks in the manifold. Hot exhaust can suddenly burn off residual fuel in the muffler when fresh oxygen hits it, making the afterfire effect.
Popping in the intake can be lots of things, carboned up heads, throttle not shutting off completely, valve timing and clearance.
Remember start with the simple things, like new plugs and caps if you have any reason to suspect they arent working perfect. Rule out each system seperately too, ignition, valves, etc.. do all tune up items one at a time and then run it
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