What should it run in the 1/4 mile

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26 Jan 2010 08:44 #344657 by gvsu141
What should it run in the 1/4 mile was created by gvsu141
I recently inherited my dads z1 drag bike. We were planning on getting it running this summer after a couple of years. I know we never had it geared right, and were still working on tuning it.

My question is: what should the bike run in the 1/4 mile approx.

Specs:
z1 900
cams
stock bore size-not sure if compression is stock or not
mr. turbo: i believe it was around 15 lbs of boost
air shift
msd/dyna electronics and shift light
1 piece fiberglass body, custom frame
wheelie bars

also, does anybody have any reccomendations on gearing that i should use?



2001 ZRX 1200
1973 z1 900
1975/73 z1 Turbo Dragbike
1982 GPZ550 - 62 Miles

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26 Jan 2010 09:09 #344659 by wildwilly30
Replied by wildwilly30 on topic What should it run in the 1/4 mile
depends on what size carbs and cams you have. i see you still have the heavy front end and wheel. my guess would be somewhere in the 10s

1977 kz1000 chopper
1974 honda cb750k chopper
1977 kz1000a1
1977 kz900a5
1978 kz650b2
1982 kz750r1 gpz
1981 yamaha 650 special
1983 kawasaki vulcan
1977 hd sportster chopper
1987 honda vt1100c shadow

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26 Jan 2010 09:17 #344661 by TerryK
Replied by TerryK on topic What should it run in the 1/4 mile
Might be a tad squirrely with the stock rake and front end.

1977 KZ1000
GSXR swingarm and rear brake
WM6 rear Akront rim
Wiseco 1075c pistons
33 smoothbores
stage 3 Web Cams
Head porting
Dyna S ignition
Lockhart oil cooler
Wiseco header



1980 Z1R drag bike
1200cc
38 Flatslides, .
500' cams
7" slick
Dyan 4000 SP ignition
etc

Ontario, Canada

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26 Jan 2010 09:17 - 26 Jan 2010 10:11 #344662 by Old Man Rock
Replied by Old Man Rock on topic What should it run in the 1/4 mile
Also would need to know if any gear ratios where changed and what the sprockt teeth counts are....

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
Last edit: 26 Jan 2010 10:11 by Old Man Rock.

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26 Jan 2010 10:03 #344669 by Jack
Replied by Jack on topic What should it run in the 1/4 mile
I've seen similar bikes run mid 9's.I'm with Terry and would rake that front end before trying to go fast.The guys I know that run turbo's used small rear sprockets ( 34t)- someone way more knowledgeable about turbo gearing will chime in. BTW, welded crank ?

79 KZ 1075 MKll
79 KZ 1500 MKll dragbike
Gone but not forgotten:
3 X 73 Z1's
1 X 74 Z1A
1 X 75 Z1B

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26 Jan 2010 10:12 #344671 by gvsu141
Replied by gvsu141 on topic What should it run in the 1/4 mile
Yes, it has a welded crank. Im not sure what it has for cams or carbs, its at my moms house at the moment, im just going off memory. I know it has a steering stabilizer on the right side.

I know the gear ratios have been changed, he only ran it a couple times since adding the turbo. I know he messad around with the gearing, but im pretty sure the ratio is still way high.

2001 ZRX 1200
1973 z1 900
1975/73 z1 Turbo Dragbike
1982 GPZ550 - 62 Miles

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26 Jan 2010 10:20 #344674 by TerryK
Replied by TerryK on topic What should it run in the 1/4 mile
There's no way to even guess what it might run without all the cam/carb/gearing ect. information.

1977 KZ1000
GSXR swingarm and rear brake
WM6 rear Akront rim
Wiseco 1075c pistons
33 smoothbores
stage 3 Web Cams
Head porting
Dyna S ignition
Lockhart oil cooler
Wiseco header



1980 Z1R drag bike
1200cc
38 Flatslides, .
500' cams
7" slick
Dyan 4000 SP ignition
etc

Ontario, Canada

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26 Jan 2010 11:59 #344683 by sbc1320
Replied by sbc1320 on topic What should it run in the 1/4 mile
Is that an LT-1 350 sbc in the background?

1980 KZ1000 LTD-B4(MK II engine) - Progressive suspension, MTC pistons, Dynojet Stage III, all wear items replaced, WFO paint scheme(1978), etc..

Past bikes- 2 1976 Kz900's, 5 1975-76 Honda CB750's, Honda 500 -4, Honda 250, Honda 125, Honda 100, Suzuki RM 250, Honda XL350, Kawasaki KLR 650, etc..

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26 Jan 2010 13:37 #344707 by gvsu141
Replied by gvsu141 on topic What should it run in the 1/4 mile
sbc1320 wrote:

Is that an LT-1 350 sbc in the background?


Yup! Came out of a '95 vette.. has a spun bearing i believe

2001 ZRX 1200
1973 z1 900
1975/73 z1 Turbo Dragbike
1982 GPZ550 - 62 Miles

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26 Jan 2010 14:38 #344718 by PLUMMEN
Replied by PLUMMEN on topic What should it run in the 1/4 mile
im thinking its only got one carb guys ,but i could be wrong! :laugh: the times are going to depend a lot on whos riding it,im gonna make fearless forcast of mid-low 10s depending on how it hooks up and how straight it runs B)

Still recovering,some days are better than others.

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26 Jan 2010 15:05 #344732 by TerryK
Replied by TerryK on topic What should it run in the 1/4 mile
PLUMMEN wrote:

im thinking its only got one carb guys ,but i could be wrong! :laugh: the times are going to depend a lot on whos riding it,im gonna make fearless forcast of mid-low 10s depending on how it hooks up and how straight it runs B)


Hence me typing "carB" :P

1977 KZ1000
GSXR swingarm and rear brake
WM6 rear Akront rim
Wiseco 1075c pistons
33 smoothbores
stage 3 Web Cams
Head porting
Dyna S ignition
Lockhart oil cooler
Wiseco header



1980 Z1R drag bike
1200cc
38 Flatslides, .
500' cams
7" slick
Dyan 4000 SP ignition
etc

Ontario, Canada

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26 Jan 2010 15:24 #344736 by PLUMMEN
Replied by PLUMMEN on topic What should it run in the 1/4 mile
that was for wildwilly! :laugh:

Still recovering,some days are better than others.

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