Author Topic: KX500B1 Rebuild Project  (Read 34698 times)

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Offline motojason

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Re: KX500B1 Rebuild Project
« Reply #15 on: January 24, 2015, 04:14:54 AM »
Sandblaster, Race Tech refurbished shock body, shaft, and reservoir-I sent them about 2.5 shocks worth of parts in order to be able to build one good one. New gold valve / re-valve, rebound separator, and rebuild with new seals, head, oil, bushings, etc.  New spring (5.4 kg/mm). They don't make a 275mm length spring in the correct ID anymore so they provide an aluminum spacer.    
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Offline sandblaster

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Re: KX500B1 Rebuild Project
« Reply #16 on: January 24, 2015, 08:43:57 AM »
The only problem I see is now you gotta get the forks done to match  :-D
The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline motojason

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Re: KX500B1 Rebuild Project
« Reply #17 on: January 24, 2015, 01:57:49 PM »
Oh, I got the forks! Complete 89 KX5 front end. Total rebuild, new springs, custom valving and cartridges made by Michigan Engineering using modified KYB parts and some stuff they machine themselves.      
« Last Edit: January 24, 2015, 01:59:53 PM by motojason »
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Offline sandblaster

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Re: KX500B1 Rebuild Project
« Reply #18 on: January 24, 2015, 02:16:04 PM »
Nice.
Can't wait for the ride report.
The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline motopunk

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Re: KX500B1 Rebuild Project
« Reply #19 on: January 25, 2015, 02:55:42 AM »
Nice.
Can't wait for the ride report.


nice project... the fork-swap is easy bolt on to the 85, because of the same bearing size till 2004 kx500 ... 

cant wait to see more pics of the progress...  8-)
big 2 stroke bikes are weapons for real men, who don´t fear death or devil. ;O)
´83 kx250, ´87 kx250 (with 360 big bore), 87 kx500, ´93 kx500 sfc

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Offline Mike Grant

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Re: KX500B1 Rebuild Project
« Reply #20 on: January 25, 2015, 04:39:28 AM »
Was just looking over the pictures and noticed that this thing a has a rear drum brake and no powervalve. Are you sure this isn't an 85. Looks like a really clean build though

Offline Foxx4Beaver

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Re: KX500B1 Rebuild Project
« Reply #21 on: January 25, 2015, 04:45:16 AM »
Are you sure this isn't an 85. Looks like a really clean build though

the B1 is an '85.

'86 was the 1st year for the rear disc, and also the last year for the vertical "uni-trak"
Excuse me, ma'am...but you've got extremely nice legs!!!...what time do they open???                                                                                                               https://www.youtube.com/watch?v=n8tCgN3aryQ

Offline Mike Grant

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Re: KX500B1 Rebuild Project
« Reply #22 on: January 25, 2015, 05:15:42 AM »
Makes sense now........I thought they were getting major updates at the time so every year was getting a new letter acronym until 89

Offline Foxx4Beaver

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Re: KX500B1 Rebuild Project
« Reply #23 on: January 25, 2015, 08:12:24 AM »


OEM NOS!

what'd you end up paying for the shrouds?...I had posted them in a different thread a few weeks back, and he was asking a pretty good price then.
« Last Edit: January 25, 2015, 08:17:07 AM by Foxx4Beaver »
Excuse me, ma'am...but you've got extremely nice legs!!!...what time do they open???                                                                                                               https://www.youtube.com/watch?v=n8tCgN3aryQ

Offline motojason

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Re: KX500B1 Rebuild Project
« Reply #24 on: January 25, 2015, 08:22:00 AM »
Thinking about a compression release. Has anybody done one on an 1985 head? It looks a little tricky with the fins and the locations of the plug and hose connection. I showed it to the guys at Racer's Toy Store (they did the cylinder prep and plating) and they were not too confident about how to place it without having a spare head to cut up and look at the water passage configuration. They suggested putting it in the top of the cylinder just below the head gasket, but I was not crazy about that idea.

Suggestions?
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Offline yeomans

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Re: KX500B1 Rebuild Project
« Reply #25 on: January 25, 2015, 08:28:40 AM »
I'd check with Larry. he'd be the guy to ask.
Plus his work is impeccable

Offline motojason

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Re: KX500B1 Rebuild Project
« Reply #26 on: January 25, 2015, 08:34:21 AM »
 [quote\] what'd you end up paying for the shrouds?...I had posted them in a different thread a few weeks back, and he was asking a pretty good price then.


$125 ea. I have a set of shrouds from Nightmare Racing too that I will use when I go to the track. No one makes a replica that is exact to the originals. The Nightmare shrouds fit and are sold as 85-86 model, but they have a straight top, and look to my eye, more like the 87 shrouds or the earlier Kawasaki "works" bike shrouds. These NOS will go on the bike only to look at!    
« Last Edit: January 25, 2015, 08:36:14 AM by motojason »
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Offline Foxx4Beaver

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Re: KX500B1 Rebuild Project
« Reply #27 on: January 25, 2015, 08:36:09 AM »
you got an awesome deal!...he was asking $345 a few weeks ago.
Excuse me, ma'am...but you've got extremely nice legs!!!...what time do they open???                                                                                                               https://www.youtube.com/watch?v=n8tCgN3aryQ

Offline motojason

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Re: KX500B1 Rebuild Project
« Reply #28 on: January 25, 2015, 08:40:44 AM »
you got an awesome deal!...he was asking $345 a few weeks ago.

I was happy with it. Definitely money I did not need to spend, but so cool to have originals and they are extremely hard to come by. To be honest I was not expecting to get them when I made the offer. I was like Oh sh*** when he accepted and I had to send cash! 
« Last Edit: January 25, 2015, 08:43:10 AM by motojason »
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Offline motojason

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Re: KX500B1 Rebuild Project
« Reply #29 on: January 25, 2015, 08:47:43 AM »
I'd check with Larry. he'd be the guy to ask.
Plus his work is impeccable

I did contact him. He has not done an 85, but I think that he is probably my best option regardless.
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