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1981 GPZ550

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Frost
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Joined: 26 May 2004
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PostPosted: 21:46 - 26 Jul 2013    Post subject: 1981 GPZ550 Reply with quote

It's a tidy modern classic that came at the right price Wink

Lots of little tatty bits to be sorted on it that include

  • leak in the tank where the badge was fitted
  • more throtle cable free play than actual action Laughing
  • bodged gear select
  • weak as fuck center stand spring
  • very soft forks
  • slight leak on right fork seal
  • clutch drags a bit


Tank has been ordered, center stand spring fitted. Will inspect the front brakes soon.

https://cdn.bikechatforums.com/files/20130726_203407.jpg
https://cdn.bikechatforums.com/files/20130726_203356.jpg
https://cdn.bikechatforums.com/files/20130726_203132.jpg
https://cdn.bikechatforums.com/files/20130726_203118.jpg
https://cdn.bikechatforums.com/files/20130726_203043.jpg
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beardface
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Joined: 19 Aug 2013
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PostPosted: 22:12 - 26 Aug 2013    Post subject: Reply with quote

Nice, looks like it's in good sound nick.
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RhynoCZ
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Joined: 09 Mar 2012
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PostPosted: 22:22 - 26 Aug 2013    Post subject: Reply with quote

Loved my '88, your's just perfect Smile

https://i970.photobucket.com/albums/ae184/RhynoCZ/GPz550foto3.jpg

EDIT: Sorry, wrong year, but it is cool ad, don't you think? Smile
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
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Frost
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Joined: 26 May 2004
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PostPosted: 23:46 - 27 Aug 2013    Post subject: Re: 1981 GPZ550 Reply with quote

Sadly it wasn't perfect Sad
If you look closely at the front calipers you'll see the banjo bolts are at the top and the bleed nipples are at the bottom. They are therefore upside down which can only be done by also putting them on the wrong side Shocked
On stripping and rebuilding with fresh seals they were impossible to bleed. After ages of pissing around i tried the bleed nipple off the rear on one of the fronts and it bled perfectly. 2 new nipples later and it became clear why they had been upside down, so that some pikey could bleed them through the banjo!

Frost wrote:


  • leak in the tank where the badge was fitted - Replaced
  • more throtle cable free play than actual action Laughing - adjusted
  • bodged gear select - replaced
  • weak as fuck center stand spring - replaced, then connected to the right bloody place, cheers keith!
  • very soft forks - removed bodged preload (huge nuts) replaced air valves and correctly pressurised
  • slight leak on right fork seal - rebuilt and changed both seals
  • clutch drags a bit - might be fixed, might be fucked, still undecided


Additionally a headlight bracket is missing meaning the light points at the sky. a possibly fitting one has been ordered from the US of A and is taking its sweet time getting here.
The rear tire though new wouldn't hold pressure. I replaced the valve but no luck. Stuck an inner tube in it.

Overall it's been a pain in the arse fixing other peoples handywork, but i'm starting to get some confidence in the bike now. In a straight line it's not too slow at it handles well for a bike if it's age and era.
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beardface
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Joined: 19 Aug 2013
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PostPosted: 22:07 - 28 Aug 2013    Post subject: Re: 1981 GPZ550 Reply with quote

Frost wrote:
i'm starting to get some confidence in the bike now. In a straight line it's not too slow at it handles well for a bike if it's age and era.


Good to hear that, enjoy the bike mate Smile
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bypass2
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Joined: 12 Sep 2013
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PostPosted: 23:50 - 12 Sep 2013    Post subject: Reply with quote

looks a nice clean original bike.
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Howling Terror
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Joined: 05 Dec 2008
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PostPosted: 01:37 - 13 Sep 2013    Post subject: Reply with quote

It looks similar to my CB250RS, so I like it. Razz
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MarJay
But it's British!



Joined: 15 Sep 2003
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PostPosted: 09:19 - 13 Sep 2013    Post subject: Reply with quote

I prefer the Uni-Trak one, but still... nice bike.
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beardface
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Joined: 19 Aug 2013
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PostPosted: 16:29 - 04 Nov 2013    Post subject: Reply with quote

This bike inspired me to keep hunting for a gpz and not go with secondary choices, I found an 86 gpz600r in very similar colours to this and after much patience it is now mine Very Happy
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