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Jetting: Lean in mid-range. Need advice.
- TheForumTroll
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I'm about to set out on the adventure that is jetting my carbs for the first time. The bike was running a bit on the lean side and I have since installed a new air filter (not pods), a fuel filter and two new exhausts that are a lot more open. The only trouble area I have spotted so far is it is somewhat unstable in the low-to-middle throttle range now. I think I understand how to fix the low (pilot) and top (mains) if needed but I'm not sure about the low to middle. The mains don't kick in until middle to WOT, right? So what do I do to make it more rich in around the 1/4-2/3's area?
-[ KZ700-A1 '84 ]-
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- Old Man Rock
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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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- TheForumTroll
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-[ KZ700-A1 '84 ]-
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- Old Man Rock
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Start with clip position for minor adjustments then go from there....
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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- TheForumTroll
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-[ KZ700-A1 '84 ]-
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- Old Man Rock
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EDIT: Nope, won't do...
File base still down.... PM your e-mail address and I can send the BS34 rebuild manual to you....
OMR
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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- TheForumTroll
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I have to admit I had no idea you could move the needle up and down that easy. Is it possible with clips on OEM needles too or do they only use washers?
Btw. my bike has CV34 carbs. Not sure if it is the same.
-[ KZ700-A1 '84 ]-
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- Old Man Rock
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- Thank you received: 225
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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- SWest
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- 10 22 2014
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Steve
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- bountyhunter
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The bike was running a bit on the lean side and I have since installed a new air filter (not pods), a fuel filter and two new exhausts that are a lot more open.
These bikes have the needle tapers literally cut to match the flow of the stock air filter and pipes. With "really open" pipes, they always go lean and the only way to get richer is bigger mains and raising the needles. Most people just keep riching until the lean spots are killed but the engine probably will be rich at some RPM ranges.
1979 KZ-750 Twin
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- SWest
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Steve
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- TheForumTroll
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-[ KZ700-A1 '84 ]-
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