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Old 06-30-2013, 10:00 AM   #1
indigio64 OP
n00b
 
Joined: Jun 2013
Location: Boulder, CO
Oddometer: 7
sp500 help

Hey, just recently found this forum and there seems to be some useful info. I am hoping some of you can help me out. I just recently purchased a 1981 suzuki sp500, it ran but leaked at the head. Came with a honed head and rocker box so i replaced it all along with gaskets and rings. Mistakenly i forgot to mark the cam timing and I was able to figure out that your supposed to match up with TDC the notch on the back of the cam shaft with the plane of the edge of the head from the back side. I did so and it has compression, just not as much as it seemed to before. BEFORE: pull decompression handle wait till click, reload peddle and kick start.
NOW: compression handle clicks and I cant seem to make a full rotation which seems like I might have placed the cam timing off.

I didint want to mess up the valves and what not so I stopped and im wondering should i just try for different teeth? would the bike not start if I was a tooth off on timing?
thanks in advance! - jake
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Old 06-30-2013, 10:18 AM   #2
kubiak
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Joined: Nov 2007
Location: madera california
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Quote:
Originally Posted by indigio64 View Post
Hey, just recently found this forum and there seems to be some useful info. I am hoping some of you can help me out. I just recently purchased a 1981 suzuki sp500, it ran but leaked at the head. Came with a honed head and rocker box so i replaced it all along with gaskets and rings. Mistakenly i forgot to mark the cam timing and I was able to figure out that your supposed to match up with TDC the notch on the back of the cam shaft with the plane of the edge of the head from the back side. I did so and it has compression, just not as much as it seemed to before. BEFORE: pull decompression handle wait till click, reload peddle and kick start.
NOW: compression handle clicks and I cant seem to make a full rotation which seems like I might have placed the cam timing off.

I didint want to mess up the valves and what not so I stopped and im wondering should i just try for different teeth? would the bike not start if I was a tooth off on timing?
thanks in advance! - jake
i think i would try to find a manual for it with all the step by step setup.
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Old 06-30-2013, 10:46 AM   #3
indigio64 OP
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Manuals are hard to come by and quite expensive on ebay, I rather figure it out without spending my food money for the week!
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Old 07-01-2013, 08:13 PM   #4
indigio64 OP
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Joined: Jun 2013
Location: Boulder, CO
Oddometer: 7
bump, any one? experience with these or dr's?
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Old 07-01-2013, 08:17 PM   #5
Mrmerlin
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Location: Philly PA
Oddometer: 324
buy some loafs of bread and a few jars of peanut butter,
save the rest and buy a manual for your machine.

Hopefully you didnt force anything while turning the engine over,
and bend the valves
Thats all I have.
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Old 07-02-2013, 12:21 PM   #6
indigio64 OP
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Quote:
Originally Posted by Mrmerlin View Post
buy some loafs of bread and a few jars of peanut butter,
save the rest and buy a manual for your machine.

Hopefully you didnt force anything while turning the engine over,
and bend the valves
Thats all I have.
I took the cam box covers off again and stuck a screw drive down the plug hole ;]

at TDC the valves are free, like I thought they were when I originally put er back together, placed a new spark plug in it during rebuild which looked like it was still out of the box when i took it out to check on this...Im thinking now for some reason I do not have spark.

As for a side note perhaps next paycheck ill try and find a manual, there do not seem to be many around. thanks though
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Old 07-25-2013, 07:54 PM   #7
indigio64 OP
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update, all fixed up and running but leaking from the decompression shaft, oil gasket needs replacing but minor spots at the rocker box to head seal look faulty...I used liquid gasket in a tube.

DOES anyone know of a better way to seal this connection, obviously a gasket was not engineered into it because the connections within box that are dissociated from outer seal. Thanks guys!
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Old 07-25-2013, 07:57 PM   #8
indigio64 OP
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Old 07-26-2013, 02:31 PM   #9
indigio64 OP
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bump, anyone? just looking for some quick tips!
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