Tachometer ratio

Trytobuildkzcafe
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14 Nov 2019 09:47 #813996 by Trytobuildkzcafe

Tachometer ratio was created by Trytobuildkzcafe

Hi everyone I’m new to the forum just picked up a 1980 kz 750e I’m trying to find the tachometer ratio for this bike so I can order a new one I’m gonna try and build a cafe does anyone know what the ratio is for this bike? It would be a great help

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Street Fighter LTD
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TURBO, Its Better to be Blown than Injected

14 Nov 2019 10:12 #813997 by Street Fighter LTD

Replied by Street Fighter LTD on topic Tachometer ratio

Welcome to KZRider.
I approved your post, but you should first make a introduction post in our new member section
We love pictures too of new members bikes
Dave

Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn

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martin_csr
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14 Nov 2019 10:40 - 14 Nov 2019 10:47 #813999 by martin_csr

Replied by martin_csr on topic Tachometer ratio

All of the KZ650 & 750-4 tachometers I've seen have R = 1:5 stamped in ink on the back.
FWIW, dimecitycycles states that most Kawasakis & yamahas use a 1:5 ratio.

1981 KZ650 Competition Sports and Road

Last edit: 14 Nov 2019 10:47 by martin_csr.

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Thepst
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25 Jul 2022 05:36 #870974 by Thepst

Replied by Thepst on topic Tachometer ratio

Hi all. Sorry to pose this question once again. I've searched and haven't found anything specific to my bike. Does anyone happen to know the tach ratio for a 1980 KZ750G? I've read in multiple places that KZs usually are 1:5 for fours, but I could've sworn I remember reading twins like mine are 1:4, but now I can't find it anywhere. My stock tach and cable has completely fallen apart or else I'd do the manual rotation/rev test. Thanks in advance!

1980 KZ750G LTD Twin

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Warren3200gt
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25 Jul 2022 12:01 #871007 by Warren3200gt

Replied by Warren3200gt on topic Tachometer ratio

I've never found a kawasaki one that wasn't 5:1 ratio. As far as I know all the other 3 use 7:1.
One one particular build I wanted to use a specific tacho which happened to be a Honda analogue item. When I hooked it up it read 1400 rpm when the engine was running at 1000rpm. I was that set on using that particular tacho that I resulted in making an inline reduction gearbox to remedy it.