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Carbs for 1015cc or 1075cc Upgrade
- donthekawguy
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Rathdrum Idaho
1971 Kawasaki g3ss
1972 Yamaha R5 350
1965 Suzuki Hillbilly
1964 Yamaha 125
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- Old Man Rock
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... Yup!!!Now I have to port my head
As explained to me by the man himself Larry C.... You can put the biggest, most expensive carbs on the planet on a motor and will it work, well ya but will it work to the true/full potetential of the carb/head design.... Hell no it won't...
Henceforth, even with 29-34's, to obatin optimum performance from your carbs/head, you need to open up the ports to match the itake openings for ideal air flow input and polish them to keep the turbalance at a minimum...
Welcome to the world of Port & Polish in the easiest form of explanation...
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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- 531blackbanshee
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- Vendor
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tia,
leon holmes
skiatook,oklahoma 1980 z1r,1978 kz 1000 z1r x 3,
1976 kz 900 x 3
i make what i can,and save the rest!
billybiltit.blogspot.com/
www.kzrider.com/forum/5-chassis/325862-triple-tree-custom-work
kzrider.com/forum/5-chassis/294594-frame-bracing?limitstart=0
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- riverroad
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- 1980 1000LTD B4
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cgi.ebay.com/ebaymotors/dragbike-kawasak...fPartsQ5fAccessories
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- otakar
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74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
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- otakar
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does anyone know if you can take a set of 1980 z1r 28mm accelerator pump carbs and bore them as otto suggested?if so do you know if you have to offset bore them or just bore them straight with the existing bore?just curious as i have the equipment to bore them,but no carb boring experience.
tia,
leon holmes
Back in the day, when some of us could not afford to buy 29SBs, that is what was done. They could punch them to 28.6MM and they would be SBs. It used to cost about $50 back in the late 70s erly 80s today i imagine about $100+. They used to work very well, much better than the stock 28s.
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
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- PLUMMEN
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ditto531blackbanshee wrote:
does anyone know if you can take a set of 1980 z1r 28mm accelerator pump carbs and bore them as otto suggested?if so do you know if you have to offset bore them or just bore them straight with the existing bore?just curious as i have the equipment to bore them,but no carb boring experience.
tia,
leon holmes
Back in the day, when some of us could not afford to buy 29SBs, that is what was done. They could punch them to 28.6MM and they would be SBs. It used to cost about $50 back in the late 70s erly 80s today i imagine about $100+. They used to work very well, much better than the stock 28s.
Still recovering,some days are better than others.
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- riverroad
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- 1980 1000LTD B4
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Is that it, or are there some other double top secret voodoo tweaks to be done too? Anything done to the primary and main circuits? Bigger jets?
I've also heard that these pumper carbs aren't very popular with the racers. True? Why?
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- PLUMMEN
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Still recovering,some days are better than others.
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- saxjonz
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- KawboyZ
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lol I bet those will go well with those Venom tires and the fluffy velvet seat from the bike that was posted in value of a performance build link.Or you could just...
cgi.ebay.com/ebaymotors/dragbike-kawasak...fPartsQ5fAccessories
I bet it would put a smile on your face.
79 LTD B3
80 LTD B4 1075 kit JE Pistons .410 cam grind, Bassani, 31 keihin CR Specials...
1980 Z1R, 2002 ZRX1200, 2003 ZRX1200
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- saxjonz
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- KawboyZ
- Posts: 2182
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Smooth-bore 28mm's, sure would love to have a set but have you seen what these have been going for on e-bay! That one set sold for $1000.... :blink: Not even re-built at that, nasty old set with stripped screws, missing pieces and such.... Totally bonkers... :blink:
One of the reasons I went with new vs 30 year old set.... The pricing was phenomenally insane not to mention for the majority of these old sets, parts are becoming hard to find... Actually obsolete in some cases....
Unless your sticking with 100% stock restoration for which I could understand the need for 28/29 smoothies, new carbs are the only way to go where by the time you find a set, re-build them and if your lucky you don't come across the WTF factoring or need obsolete parts, it breaks out about the same in costs...
Cro Dog bought those 29s and put them on his bike and they look really nice being that the old ones were harder to mess with. He has a set of original 28s if any of you guys are in to the originals drop him a pm I am sure he would be happy to help defray the cost of his new carbs. They weren't cheap but piece of mind is worth a small fortune.
79 LTD B3
80 LTD B4 1075 kit JE Pistons .410 cam grind, Bassani, 31 keihin CR Specials...
1980 Z1R, 2002 ZRX1200, 2003 ZRX1200
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- tachrev
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- Rubber Side Goes Down
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They also don't look they have ever been machined.
I will have to double check when I have them off next.
I know they run great.:side:
1977 Kawasaki KZ1000 : Street/Strip
Build Thread
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