Dutchz Z1 road burner - new stuff

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22 Jan 2011 17:48 #424477 by dutchz
Replied by dutchz on topic Dutchz Z1 road burner - quick turn throttle
Of course the tube does not fit the housing - that would be to easy :laugh:
The spool hits both halves of the clam shell housing. A wee bit where the cables come in and a *lot* on the side where the cables hook to the spool. The 36mm diameter is measured along the round part of the spool not where the cables hook in, by the way.
I started by removing the casting marks inside the housing:
800
1974 Kawasaki Z1
Stock front hub and rear axle.
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22 Jan 2011 17:49 #424478 by dutchz
Replied by dutchz on topic Dutchz Z1 road burner - quick turn throttle
...and spent another hour or so with the dremel to open the housing up:
800
1974 Kawasaki Z1
Stock front hub and rear axle.
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22 Jan 2011 17:51 #424479 by dutchz
Replied by dutchz on topic Dutchz Z1 road burner - quick turn throttle
Sanded the Z1000 spool down some:
800
1974 Kawasaki Z1
Stock front hub and rear axle.
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22 Jan 2011 17:55 - 22 Jan 2011 17:55 #424481 by dutchz
Replied by dutchz on topic Dutchz Z1 road burner - quick turn throttle
Kept going until there was absolutely no binding whatsoever - for obvious reasons. The end result below. Bottom mark on the tape was original WOT mark. Top mark is the current one. Big difference, total cost for this improvement: $10. Throttle snaps shut hard just like it did before.

800
1974 Kawasaki Z1
Stock front hub and rear axle.
Attachments:
Last edit: 22 Jan 2011 17:55 by dutchz.

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22 Jan 2011 18:02 #424487 by dutchz
Replied by dutchz on topic Dutchz Z1 road burner - quick turn throttle
Just FYI I did hold up the Z1000 tube to the stock Z1 switch housing, it will not fit in there - it may if you do the modifications I did to the MP housing - have not tried as I am not using the stock switch.

I also read somewhere an SV650 throttle tube is 33mm - have not verified. That tube would give you a bit quicker action, should logically put you half way between the two marks and would be much easier to fit in either housing...
1974 Kawasaki Z1
Stock front hub and rear axle.

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  • CoreyClough
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  • GPz550 Addiction
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22 Jan 2011 19:08 #424508 by CoreyClough
Replied by CoreyClough on topic Dutchz Z1 road burner - quick turn throttle
dutchz wrote:

Picked up a Z1000 tube from Motion Pro (thanks Corey!).

800


You're welcome Dutch!

Buttonwillow Raceway March 19-20 for the AFM Races. Be there!!!
'85 GPz550(ZX550-A2)

GPz550 Base Manual --> tinyurl.com/ze5b3qo
GPz550 Supplement Manual --> tinyurl.com/h34d2o6
GPz550.com --> www.nwsca.com/scripts/gpz_forum_2005/default.asp
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22 Jan 2011 23:28 #424594 by dutchz
Replied by dutchz on topic Dutchz Z1 road burner - quick turn throttle
I will try my damnest!
1974 Kawasaki Z1
Stock front hub and rear axle.

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  • porchev914
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  • Whats that? Half of my swingarm is missing?!?!?
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23 Jan 2011 00:41 #424597 by porchev914
Replied by porchev914 on topic Dutchz Z1 road burner - quick turn throttle
Cool Dutch, thanks for the info. I also hated having to reposition my hand to firewall it :)
FRANKEN Z!
1978 KZ1000 A2A with 08'Speed Triple SSSA and '06 GSXR1000 front end

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24 Jan 2011 08:36 #424941 by 531blackbanshee
Replied by 531blackbanshee on topic Dutchz Z1 road burner - new stuff
sweet mod dutchz!
thanks for documenting it,

leon
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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24 Jan 2011 14:19 #425044 by dutchz
Replied by dutchz on topic Dutchz Z1 road burner - new stuff
You're welcome guys. Went riding yesterday and love the way it feels. I wasn't sure how quick I was going to get used to it but it really didn't take long at all. You have to be smoother at small throttle openings but the throttle feeling is a huge improvement, feels a lot more direct. Well worth $10 :laugh:
1974 Kawasaki Z1
Stock front hub and rear axle.

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  • mark1122
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  • Keep twisting it
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24 Jan 2011 16:42 #425093 by mark1122
Replied by mark1122 on topic Dutchz Z1 road burner - new stuff
Great little mod Dutch. Thanks.
Excuse me if i missed the answer to this before, but,
How do u like your new header? does it have more bottom end with the 2" collector?
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.

~ ~ ~_@
~ ~ _- \,
~ (k) / (z)

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24 Jan 2011 23:17 #425221 by dutchz
Replied by dutchz on topic Dutchz Z1 road burner - new stuff
Hey Mark, thanks. Yes it seems to have better midrange performance than the Yosh did - as far as I remember, not exactly a back to back test. Unfortunately I have not had the chance to throw the bike back on the dyno, hopefully later this year.
1974 Kawasaki Z1
Stock front hub and rear axle.

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