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200 Compression After Full Rebuild. Jetting Specs?

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Alright folks, I had my motor completely rebuilt along with the head cut, cylinder ported, and cases matched, its supposed to be set up to run on pump gas.

I've got the entire bike back together and I did a compression test before I start the motor, motor still hasn't been started so I suppose the rings are not yet fully seated, on my harbor freight guage it reads a full 225psi which seems high to me especially since the rings are seated. Now I am not a motor specialist but I don't want to mess things up, does this seem especially high or do you all think its where it should be.

It definitely is more difficult to kick than prior the the rebuild. I did a compression check at 40 hours and it read 205 which I also thought was a bit high so maybe it is just my guage.

Also, just thought I would ask what you guys think of this jetting for sea level.

185 main, 42 pilot, JD Blue needle on the second leanest clip or one from the top.

Here is a pic of the piston prior to rebuild.

https://lh5.googleusercontent.com/-WkALtmpNg8w/TjbvUJoOn-I/AAAAAAAAAVw/Pcpn1sTqUtc/s800/2011-07-31_16-35-50_660.jpg

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I always like to start my jetting experimentation with the needle in the 3rd clip. I am not as familiar with the JD needle, but your specs look good. I don't know that you will need it, but if you have a 188 to try, won't hurt. If you are going to seize one, it will be on the main jet. The bike will tell you quickly if you are lean on the pilot or clip position.

I never had much luck with compression tests, so I don't even do them any more.

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My 200's were always around 210-200 psi fresh, WOT five good kicks ( Snap-On Guage).

The China guages do seem to run higher numbers for some reason.

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I spoke with the shop and they said pump gas would be fine but it would run stronger on race fuel. I asked them to set it up for pump fuel so it should be set up that way. I was originally checking the compression for baseline information and monitoring the health of the top end but I did get a bit concerned by the high reading. I am guessing that my guage reads high since when I checked the compression several hours before the rebuild it read 205.

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I spoke with the shop and they said pump gas would be fine but it would run stronger on race fuel. I asked them to set it up for pump fuel so it should be set up that way. I was originally checking the compression for baseline information and monitoring the health of the top end but I did get a bit concerned by the high reading. I am guessing that my guage reads high since when I checked the compression several hours before the rebuild it read 205.

Than it should be fine on pump fuel as long as that is the way they set it up.

If you let them do the work,you already made a commitment to trust them.

So you should trust what they say.

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That is my plan, I am so happy to see my Dad tomorrow since he is heading over seas for work but the only thing I can think about is riding that dang dirt bike ASAP. Its totally buttoned up, clean, fresh tires, fresh motor, Ready to Race as KTM says and I have to wait, I might be able to sneak a couple hours in after work Monday. :smashpc:

I've debated the whole how to break it in thing in my head and I'm just going to go for a for a good trail ride but I'm sure I'll let it rip once or twice, not as much as normal but I figure some guys says break it in easy and some say ride the piss out of it, so I'll ride easy for the most part with a couple WOT runs here and there.

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