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rs34's
- mark1122
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- Keep twisting it
If it's not raining tomorrow , i'll go bigger.
76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.
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- davel
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The bike runs smooth at the above jetting, but the plugs were bone white. i've worked up to 137.5 mains, needle clip3 and 1/2 turn out on the 17.5 pilot fuel screws. still bone white.
White is right. Refer to these plug reading instructions by Larry Meaux
www.empirenet.com/pkelley2/sparkplugreading.html
He is emphatic about not looking at the porcelin for jetting changes.
Look at thread base ring for jetting
Look at ground strap for heat range
Look at porcelin for detonation
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- mark1122
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none have any black on the base ring and only 2 show a heat line, on the ground strap.
It sure would be easier with an 02 sensor.
76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.
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- davel
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It sure would be easier with an 02 sensor.
...or a dyno in the garage.
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- mark1122
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mark1122 wrote:
It sure would be easier with an 02 sensor.
...or a dyno in the garage.
your such a tease.:lol:
76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.
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- kaw-62046
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- mark1122
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i dont know why it is lean ,i was ok with 127.5 mains in my 1327?
i just put in the 20 pilots at 1/8th turn.and 140 mains.
i will keep going up on the mains untill it feels rich. when i back out of full throttle, to 3/4, and it gets stonger, i know i am too big. i like to keep checking the plugs for color too. i think of it as a good learning tool.
It is cool and rainy here.
What do u have done to the head and cams? Pipe?
How did u determin the right size?
76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.
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- kaw-62046
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Bore- 2.992"
Stroke- 2.596"
Head Gasket Thickness .043"
Head Gasket Diameter 3.012"
Piston Height .003" above Deck
Combustion Chamber 36cc
Dome Volume 10cc
Compression Ratio 10.75/1
Displacement 1200cc
Valve Spring Information for Web Cams Springs VS-K10 Intake Exhaust
Installed Height 1.320"- 1.340" 1.320"- 1.340"
Seat Pressure 90psi 90psi
Open Pressure 240lbs@.425" lift 240lbs@.425" lift
Max. Valve Lift .425" .425"
Coil Bind .575" lift .575" lift
Camshaft Specifications for Web Cams Grind #110 Intake Exhaust
Valve Lash .006" .006"
Valve Lift .395" .395"
Duration 284* 284*
Duration @ .050" 256* 256*
Lobe Center 106* 108*
Lobe Seperation Angle 107*
Valve Opens 22* Before TDC 56* Before BDC
Valve Closes 54* After BDC 20* After TDC
Cams Installed @ 106* 108*
Valve Information Intake Exhaust
Head Diameter 37.5mm 31mm
Installed Height #1 - #4 1.486" 1.485"
Valve-Valve Clearance @ Seat .180"
Valve-Valve Clearance @ Overlap .059"
Valve to Piston Clearance >.130" >.130"
Cylinder Head Information Intake Exhaust
Valves 37.5mm SS "J" Model 31mm SS KZ 1000
Retainers Stock Steel Stock Steel
Keepers Radius Groove Radius Groove
Springs WC VS-K10 WC VS-K10
Spring Shims
Cylinder 1 0 .015"
Cylinder 2 0 .015"
Cylinder 3 0 .015"
Cylinder 4 0 .015"
Shim Bucket Type SOT SOT
Valve Shims
Cylinder 1 2.6mm 2.5mm
Cylinder 2 2.6mm 2.5mm
Cylinder 3 2.55mm 2.5mm
Cylinder 4 2.65mm 2.5mm
Valve Angle Cut 2 2
Seat Angle Cut 3 3
Cylinder Head Type KZ 1000
Piston Information on JE #132493
Rod Length 5.3905"
Dome Height .190"
Compression Distance .979"
Valve Pocket Depth Intake .140" from Deck
Valve Pocket Depth Exhaust .080" from Deck
Top Groove .040"
Second Groove .0485"
Oil Groove .111"
Pin Diameter .669" = 17mm
Pin Length 2.253"
Pin Retainer JE .050" Wire Lock
Target Piston Weight 226g
Piston to Cylinder Clearance .0025"
Crank Shaft Information
End Clearance- Out of Cases .014"
Connecting rod Side Clearance
Journal 1 .016"
Journal 2 .015"
Journal 3 .015"
Journal 4 .016"
Crankshaft type Mark II - Welded
Rod Wrist Pin Diameter 17mm
Cylinder Information
Sleeve Type Weisco 1200cc- New
Ring End Gap Top Second
Cylinder 1 .014" .020"
Cylinder 2 .014" .020"
Cylinder 3 .014" .020"
Cylinder 4 .014" .020"
Carbuerator information
Carbuerator Type 34mm Mikuni Flat slide
Main Jet 122.5
Pilot Jet 20
Accelerator Pump Yes
Needle Location Center
Needle Length
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- 79MKII
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Carburettor info (RS34 Flatslide smoothbores)
Main Jet - 130
Pilot Jet - 17.5
Mixture screws - close to 1/2 turn, adjusted with colortune
Accelerator Pump - adjusted to mikuni specs
Needles - clip in center groove
Float Height - adjusted to 17mm when float tab just touches needle valve
Synchronized with mercury vacuum gauge
These are waaaaay different than they were when received brand new. I can't believe the work it took to dial them in. No way were they "bolt on".
Thanks for all the tips!
The Kaw List:
Current: 79 KZ1000 A3 MKII, 78 KZ1000 A2, 78 KZ1000 Z1-R, 78 KZ650 SR, 80 KE175
Former: 03 KLX400SR, 99 ZRX1000, 82 KZ750 LTD, 80 KZ1000 A4 MKII, 80 KZ1000 LTD, 78 KZ1000 A2, 74 H-2 750 Triple, 78 KL250
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- timebomb33
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1973 z1 2-1974z1-a,2-1975z1-b dragbikes1015cc+1393cc, 1977kz1000,1978kz1000,1981kz1000j, 1997 zx-11, 2000 z12r,1428turbo nitrous pro-mod and a shit load of parts thats all for now leader sask.,CANADA
I THINK MY POWERBAND BROKE
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- 79MKII
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I'd like to pick up a pair of round slide Keihin RS carbs someday, but those are pricey. I wonder if the Keihin flatslides rattle too??
The Kaw List:
Current: 79 KZ1000 A3 MKII, 78 KZ1000 A2, 78 KZ1000 Z1-R, 78 KZ650 SR, 80 KE175
Former: 03 KLX400SR, 99 ZRX1000, 82 KZ750 LTD, 80 KZ1000 A4 MKII, 80 KZ1000 LTD, 78 KZ1000 A2, 74 H-2 750 Triple, 78 KL250
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- timebomb33
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1973 z1 2-1974z1-a,2-1975z1-b dragbikes1015cc+1393cc, 1977kz1000,1978kz1000,1981kz1000j, 1997 zx-11, 2000 z12r,1428turbo nitrous pro-mod and a shit load of parts thats all for now leader sask.,CANADA
I THINK MY POWERBAND BROKE
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