GPZ750/810 racer running....

  • CoreyClough
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Re: GPZ750/810 racer marching on

23 Jan 2011 08:28 - 23 Jan 2011 08:30
#424658


Found the page from the article that shows the cross-bracing on the back side of the frame(upper right), and they also made the tail section removeable.
'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
First Race Win GPz550 --> tinyurl.com/o5y3ftp
Last edit: 23 Jan 2011 08:30 by CoreyClough.

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  • turboguzzi
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Re: GPZ750/810 racer marching on

23 Jan 2011 08:56 - 23 Jan 2011 09:20
#424664
Have made similar X bracing in the past, and will do so also on the GPZ, just lighter :) check the early pictures and youll see four ears i've welded in that area. I am going to bolt there a 1/8" ally plate that will do a similar job.

not sure as to why they did the removable frame as it doesnt really reduce weight or increase rigidity. maybe it has to do with the fact that they mix and matched an earlier 550 front frame with a later uni track suspension, don't know...

considered doing it too but a quick check showed that the whole steel rear subframe weights 4 lbs while a replacemnet ally one + mounting hardaware would be 2 lbs in the best case.

As i work all alone and dont have a team of people doing stuff for me just, it was not worth the effort in my book.

Not sure our rulebook would have allowed it either. here in italy they are really into the period look thing and modern forks, 17" wheels, and many other modifications that never existed back then are not allowed. I actually like the fact that it is true vintage racing rather than vintage/modern Frankensteins :)

TG
Last edit: 23 Jan 2011 09:20 by turboguzzi.

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Re: GPZ750/810 racer marching on

23 Jan 2011 09:04
#424666
pushin, pushin, onto to the engine then,

gear change and shafts in place

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Re: GPZ750/810 racer marching on

23 Jan 2011 09:06
#424667
did you know that 750 gears come undercut form the factory ?

:)

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Re: GPZ750/810 racer marching on

23 Jan 2011 09:07
#424669
a few hundred bucks saving in there ;)

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Re: GPZ750/810 racer marching on

23 Jan 2011 09:10
#424670
i'll be using the complete ignition system of a 90's gsxr

as it has only one pickup no problems with the timing of the two pairs not matching

it'll be mounted to a honda sohc4 plate....

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Re: GPZ750/810 racer marching on

23 Jan 2011 09:11
#424671
...because it simply bolts on to the kawi fixing posts :)

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Re: GPZ750/810 racer marching on

23 Jan 2011 09:13
#424672
peek through the hole and you'll see the rotor and pickup coil...

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  • turboguzzi
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Re: GPZ750/810 racer marching on

23 Jan 2011 09:16
#424675
and its going to be capped off by my DIY heavy duty, crash resistant cover.

made it originally for my sohc4 but turns out it works well also on the Kawi. RSC stands for Racing Service Corporation, Honda's sporting arm before it became HRC.

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Re: GPZ750/810 racer marching on

23 Jan 2011 09:17
#424676
another angle

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Re: GPZ750/810 racer marching on

23 Jan 2011 09:31
#424681
dutchz wrote:
Coming along nicely! Are you going to run it naked or with a fairing?

hei dutch, gonna run it naked,

Save for one circuit, we dont have too many tracks with long straights, so hope that up to 130-140 mph my head will stay put :)

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  • thompsonmx100
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Re: GPZ750/810 racer marching on

23 Jan 2011 10:48
#424714
Looking good Turbo. I really like the motor mounts. Should be a good handling bike.
2006 gs 500 streetfighter
1982 gpz750 breathed on wreck
1985 gpz750
Kz 650

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