sprockets

HOGEATER
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Been riding 2 wheels since 1965,

28 May 2010 14:40 #371680 by HOGEATER

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What is the original sprockets sizes on a 78 KZ1000. I want to get less rpm at hiway speeds. I now turn a touch over 4k at 65mph.. Should I go larger in front or smaller in back??

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mart13
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28 May 2010 14:47 #371682 by mart13

Replied by mart13 on topic sprockets

i'd go larger on the front

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otakar
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28 May 2010 14:51 #371683 by otakar

Replied by otakar on topic sprockets

I wouldn't touch it you will gain nothing and loose everything if. At 4000 you are at the first peek on the torque curve and you are on the flat spot of the fuel consumption curve. But if you drop RPM even by 500 revs you will loose 10Hp and about 2 Lb/Ft of torque. This at no gain in fuel economy.

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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JMKZHI
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28 May 2010 17:49 #371723 by JMKZHI

Replied by JMKZHI on topic sprockets

HOGEATER wrote:

What is the original sprockets sizes on a 78 KZ1000...

The diagrams at Kawasaki.com will have the sprocket sizes, as well as other info for your bike... the cross-reference is a handy feature... for future reference.

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otakar
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28 May 2010 18:03 #371728 by otakar

Replied by otakar on topic sprockets

In 1978 there were 3 different KZ1000s, Z1R, LTD & standard model. They all had different final drive ratios. Have to have more info than 78 KZ1000 to answer your question.

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z1kzonly
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28 May 2010 19:01 #371746 by z1kzonly

Replied by z1kzonly on topic sprockets

15 front and 33 rear. For the KZ1000.

I am sure power or fuel does not matter to you.

Just lowering RPM's

Put a 16 tooth countershaft on the front. They are on ebay alot. If your chain is tight you might have to add a link.

Livin in "CheektaVegas, NY
Went thru 25 of these in 40 yrs.
I SOLD OUT! THE KAW BARN IS EMPTY.
More room for The Old Girl, Harley 75 FLH Electra Glide,
Old faithful! Points ign. Bendix Orig. carb.
Starts everytime!

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davel
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28 May 2010 23:25 #371790 by davel

Replied by davel on topic sprockets

HOGEATER wrote:

Should I go larger in front or smaller in back??

Here's a 16T front
www.z1enterprises.com/detail.aspx?ID=2099

a source for aluminum back sprockets down to 30T
www.sprocketspecialists.com/SearchResults.aspx?txtSearch=276

and a really useful final drive calculator
www.gearingcommander.com/

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HOGEATER
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Been riding 2 wheels since 1965,

29 May 2010 04:07 #371802 by HOGEATER

Replied by HOGEATER on topic sprockets

OH I forgot to say it was a LTD model, I know when I'm running 80mph it don't take much to go over a ton. I just always seem to try to get another around 70mph.

CHUCK

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otakar
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29 May 2010 04:35 #371804 by otakar

Replied by otakar on topic sprockets

If you must, than I do agree. I would go to a 16T front. This way you wont have to change the chain and you will go from a 2.2:1 ratio to a 2.06:1 ratio. That is significant.

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otakar
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29 May 2010 04:37 #371805 by otakar

Replied by otakar on topic sprockets

The 16t front will drop the RPM by about 250revs at 65MPH.

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