KX Guru Racing

Sandblaster wrote: Mon Sep 30, 2019 7:13 pm 38MM AIR STRIKER CARBURETOR (LONG BODY)
Mathew Beauchamp
48 pilot 165 mine n82m in the 3 Rd position. #7 slide

what is the engine base , reed, etc... and riding condition
thinking to try the same with a 87 kx500 engine+spacer+vf2+gold gnarly cr500pipe...

thanks

what is the ohlins rear shock model compatible, In France I saw many kx500 with ohlins shock!
but what is the model, any idea?



thanks

thanks for your feedback

what about your 86 and 88 cylinders, did you mod your head for higher compression?
I am willing to mod according to your experience on 86-88 cylinders with pump gas.

thanks

the cylinder is black originally, has been painted.
the KIPS badges has been glued.

thanks

I just would like to mention that there is a new version of the Wossner rod, the P2039-2 ,seems to be a bit more refined than the one presented.

cheers!

the piston is a standard OEM piston 89-2004 , flat type.
what exactly do you want to investigate?

thanks

the distance from the top of the exhaust port to the deck of the cylinder = around 50mm

thanks!

Thanks for the octane unit lesson ;)
So We Have likely RON 98 Gas where I am

PURE STOCK kx500 87 cylinder with B ART 89-2004 OEM piston and wrist pin:

Step = around 2.2mm
Distance from the top outside edge of the piston to the top deck of the cylinder = around 0.25mm

gaskets available ...

where I am, the premium Gas is from 96 to 100 octan.
this is what I am using. I believe much better than the gas of 1987 they were using at the time.

I think the 86 kx500 stock compression was 8.5:1
given that a decompression valve will be fitted. 8.5:1, 8.6:1 sounds good figures
what do you think?

Because the original kx500 86-87 piston has a dome shape and new type piston type (88-2004) is flat on the top.
the compression and the combustion chamber is altered with a new type flat piston.

any recommendations regarding the squish optimization.
do you know how to optimize the squish of this ...