KX Riders

Commercially available service offered by members of KXRiders. => OEM-CYCLE => Topic started by: sandblaster on December 10, 2016, 08:25:56 AM

Title: 1992 KX500 Snow bike engine for Brent
Post by: sandblaster on December 10, 2016, 08:25:56 AM

This will be a cool engine build.
The engine came to us with a Eric Gore ported cylinder.
The porting would have been ok for a trail bike but NOT for a Snow bike..
You can read the details so far here:

http://www.oem-cycle.com/forum/viewtopic.php?f=41&t=1210 (http://www.oem-cycle.com/forum/viewtopic.php?f=41&t=1210)

(http://www.oem-cycle.com/forum/download/file.php?id=4914)

Title: Re: 1992 KX500 Snow bike engine for Brent
Post by: Foxx4Beaver on December 10, 2016, 10:46:36 AM

Interesting.

Title: Re: 1992 KX500 Snow bike engine for Brent
Post by: sandblaster on December 10, 2016, 11:13:30 AM

When we are done it will breathe a bit better then the E.Gore cylinder..

Title: Re: 1992 KX500 Snow bike engine for Brent
Post by: sandblaster on December 19, 2016, 12:48:46 PM

Eric's to the left...
Mine to the right  8-)

(http://www.oem-cycle.com/forum/download/file.php?id=4956)

Title: Re: 1992 KX500 Snow bike engine for Brent
Post by: dave916 on December 19, 2016, 11:44:18 PM

Quote from: sandblaster on December 19, 2016, 12:48:46 PM

Eric's to the left...
Mine to the right  8-)

(http://www.oem-cycle.com/forum/download/file.php?id=4956)

When we are done it will breathe a bit better then the E.Gore cylinder..

Bit of a bold statement :-)
Looks like eric is aiming more air flow toward piston/ crankcase area

U seem to be aiming  more towards boyesen port by removing alot of metal on the cylinder side of the boyesen port  which i am not a fan of because kawasaki are prone too cracking around rear cylinder studs

Which is better? dont know without dyno

Title: Re: 1992 KX500 Snow bike engine for Brent
Post by: sandblaster on December 20, 2016, 04:17:12 AM

What I'm doing works pretty well for what I want..
I won't go to the extreme I did on this drag bike but the same principals apply on a smaller scale..

http://www.oem-cycle.com/forum/viewtopic.php?f=41&t=1120 (http://www.oem-cycle.com/forum/viewtopic.php?f=41&t=1120)

Oh, and Jeff has won 6 Championships on his KX500, including this season with the new top end and crank I built him.
He won this last dirt season with no NOS, all engine.
Ice season starts up soon (Hopefully) and he will turn on the spray  8-)
Jeff said that the new top end I built puts out more power without NOS then his engine did before with NOS.
And the really cool thing is we can give him more power at any time  :-o

Title: Re: 1992 KX500 Snow bike engine for Brent
Post by: sandblaster on January 07, 2017, 11:05:12 AM

Send your crank parts out for assembly and balancing while dirty... and they will come back dirty with a new rod kit.
Send them out clean or polished and the results speak for themselves.

(http://www.oem-cycle.com/forum/download/file.php?id=4979)

Title: Re: 1992 KX500 Snow bike engine for Brent
Post by: sandblaster on January 18, 2017, 12:51:26 PM

Got it put together enough tonight so that I can figure out the port timing and the head squish.
So now I can finish porting the cylinder and get it sent out for repair and plating.
Also, Larry will be getting another head to do very soon :-)