Author Topic: 1987 kx500. Help?  (Read 8674 times)

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Offline Tim short

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1987 kx500. Help?
« on: January 12, 2016, 10:14:56 AM »
So i just picked up a 500 amd want to rebuild the topend now from what ive read i can use a 88-04 piston. Is this correct i noticed the 87 has 1 ring while an 88+ has 2
Sorry if im beating a deadhorse with this question
Thanks for tthe help

Offline umberto

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Re: 1987 kx500. Help?
« Reply #1 on: January 12, 2016, 10:24:58 AM »
One of our members, Sandblaster, has this awesome interchange list on his website.

http://oem-cycle.com/KAWASAKIKX500BIKEID.shtml

It lists the pistons working from 85-04, per his Kawasaki dealer.  If you get a piston, spring for a Wossner.  You won't regret it.  You can get one from Sandblaster or Alward25.  If you want to post pics of your build, here is a link on how to do it:

http://www.kxriders.com/forums/index.php/topic,10040.0.html

Welcome to the site!
Perhaps I have a dirt bike addiction?

03 KX 250/88 KX 525/2017 KX250F - Goliath
17 KX250F/04 KX250
04 KX 250 - Lunchbox's Bike
05 KX 125/144

Offline Tim short

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Re: 1987 kx500. Help?
« Reply #2 on: January 12, 2016, 12:36:50 PM »
Ok thanks so much ive been looking for an interchange list for so long and ll do if i rebuild the bike

Offline alexander-vmann

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Re: 1987 kx500. Help?
« Reply #3 on: January 13, 2016, 05:57:32 AM »
i recently cleaned the exhaust valves in my 87, and noticed the piston has two rings
KX 500 newbie

my bike: 1993 kx500

Offline Foxx4Beaver

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Re: 1987 kx500. Help?
« Reply #4 on: January 13, 2016, 06:16:54 AM »
'87 was the last year of the single ring....but yeah, the newer dual ringers work in substitute.
Excuse me, ma'am...but you've got extremely nice legs!!!...what time do they open???                                                                                                               https://www.youtube.com/watch?v=n8tCgN3aryQ

Offline Tim short

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Re: 1987 kx500. Help?
« Reply #5 on: February 04, 2016, 10:36:07 AM »
Just a question what is the stock bore for a 1987 kx500 piston (mm)

Offline Foxx4Beaver

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Re: 1987 kx500. Help?
« Reply #6 on: February 04, 2016, 10:39:12 AM »
Just a question what is the stock bore for a 1987 kx500 piston (mm)


86
Excuse me, ma'am...but you've got extremely nice legs!!!...what time do they open???                                                                                                               https://www.youtube.com/watch?v=n8tCgN3aryQ

Offline Tim short

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Re: 1987 kx500. Help?
« Reply #7 on: February 04, 2016, 11:01:45 AM »
Thank you

Offline Foxx4Beaver

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Re: 1987 kx500. Help?
« Reply #8 on: February 04, 2016, 11:21:16 AM »
here's an old brochure...gives a small handful of specs...

Excuse me, ma'am...but you've got extremely nice legs!!!...what time do they open???                                                                                                               https://www.youtube.com/watch?v=n8tCgN3aryQ

Offline Tim short

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Re: 1987 kx500. Help?
« Reply #9 on: February 06, 2016, 07:24:02 AM »
Thanks for the brochure :)
But im at a standstill i just tore the bike down(20mins ago) and i just discovered the power valve is split in two , the other one is good. Where can i get this part thanks for the replies

Offline Foxx4Beaver

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Re: 1987 kx500. Help?
« Reply #10 on: February 06, 2016, 07:28:44 AM »
hopefully someone on here has one, that can help you out...other wise, I'd scour e-bay continuously on a daily basis.
Excuse me, ma'am...but you've got extremely nice legs!!!...what time do they open???                                                                                                               https://www.youtube.com/watch?v=n8tCgN3aryQ

Offline umberto

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Re: 1987 kx500. Help?
« Reply #11 on: February 06, 2016, 09:08:09 AM »
I have an 88, and I waited until I could find a set of 86 valves on eBay for mine.  They are steel and will last forever, while the 87 and 88 ones are made of cast aluminum and are prone to break just below the valve itself. 
Perhaps I have a dirt bike addiction?

03 KX 250/88 KX 525/2017 KX250F - Goliath
17 KX250F/04 KX250
04 KX 250 - Lunchbox's Bike
05 KX 125/144

Offline Tim short

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Re: 1987 kx500. Help?
« Reply #12 on: February 06, 2016, 10:09:32 AM »
does anyone know if a newer style valve would work, I was looking on eBay and the rail that the newer style ones ride on looks the same.

Offline Tim short

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Re: 1987 kx500. Help?
« Reply #13 on: February 06, 2016, 10:12:28 AM »
I was also thinking i have the other one which i believe is good do you guys think i could get two new ones machined ?

Offline umberto

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Re: 1987 kx500. Help?
« Reply #14 on: February 06, 2016, 11:17:20 AM »
I tried to get a friend of mine to make me a new set.  He is an experienced tool and die maker, and he said it would be very expensive. The newer model valves might work. Zz3gmc had a buddy that modified a set for his 88. I don't think that friend is active on the site, but you might try contacting zz3gmc.
Perhaps I have a dirt bike addiction?

03 KX 250/88 KX 525/2017 KX250F - Goliath
17 KX250F/04 KX250
04 KX 250 - Lunchbox's Bike
05 KX 125/144