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Author Topic: Sean Collier's "The Beast" Engine in for a refresh and mods.  (Read 11897 times)

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Offline sandblaster

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Sean Collier's "The Beast" Engine in for a refresh and mods.
« on: May 25, 2017, 12:13:46 PM »
We got her back in and now it's time to do it right..


http://www.oem-cycle.com/forum/viewtopic.php?f=103&t=1333


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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline big green

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Re: Sean Collier's "The Beast" Engine in for a refresh and mods.
« Reply #1 on: May 25, 2017, 11:58:37 PM »
is that the engine that was originally done by frenchie?
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Offline sandblaster

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Re: Sean Collier's "The Beast" Engine in for a refresh and mods.
« Reply #2 on: May 26, 2017, 02:13:31 AM »
Yes it is.
Very little port work, high compression (Shaved head) stock port timing.
Explosive power... Typical KX500  :lol:
We will be taming it down a bit.
When done it will have a load of torque through the bottom to mid range...
No top end to speak of..
Just what Sean wants.
Although we are making one mod that will hopefully gain HP and Torque through the entire RPM range.
Can't release anything until the Dyno proves or disproves it as we are working with another vendor with a patent..  :-o
With this mod other bikes have shown a significant increase... But the KX500 does not always respond to mods the way other engines do so we will see....
More to follow  8-)
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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline big green

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Re: Sean Collier's "The Beast" Engine in for a refresh and mods.
« Reply #3 on: May 26, 2017, 11:52:10 AM »
Looking forward to your findings
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Offline sandblaster

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Re: Sean Collier's "The Beast" Engine in for a refresh and mods.
« Reply #4 on: June 06, 2017, 05:56:22 AM »
And... We need to bring the back end up to Groot specs so I'm starting another rear caliper project..
I'll do it close to how I did the last one but this one will be even stronger and cool better...

http://www.oem-cycle.com/forum/viewtopic.php?f=107&t=1349
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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline sandblaster

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Re: Sean Collier's "The Beast" Engine in for a refresh and mods.
« Reply #5 on: June 08, 2017, 02:17:28 PM »
I spent a bit of time doing the rough porting the other day..
Today, Jason put his hand to the port tools and began to massage the cylinder..
No gloves, no eye protection... Nice Jason... Nice...

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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline big green

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Re: Sean Collier's "The Beast" Engine in for a refresh and mods.
« Reply #6 on: June 09, 2017, 01:25:01 AM »
C'mon its only metal shavings... :lol:
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Offline Foxx4Beaver

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Re: Sean Collier's "The Beast" Engine in for a refresh and mods.
« Reply #7 on: June 09, 2017, 06:33:27 AM »
he's missin the butt/cigar hangin out of his mouth. 
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Offline sandblaster

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Re: Sean Collier's "The Beast" Engine in for a refresh and mods.
« Reply #8 on: June 09, 2017, 08:53:04 AM »
Quote from: Foxx4Beaver on June 09, 2017, 06:33:27 AM
he's missin the butt/cigar hangin out of his mouth. 


Lol... I'll let him know...
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Offline Brute

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Re: Sean Collier's "The Beast" Engine in for a refresh and mods.
« Reply #9 on: June 11, 2017, 04:02:56 PM »
If he would like to know what it is like having bits of a grinding stone dug out of his eye I can help... It was pretty much the last time I didn't wear safety glasses while grinding.
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Offline sandblaster

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Re: Sean Collier's "The Beast" Engine in for a refresh and mods.
« Reply #10 on: June 11, 2017, 05:21:20 PM »
Been there buddy... Which is why I'm on him all the time....  :roll:

Jason has a bit more roughing is done..


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Offline dave916

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Re: Sean Collier's "The Beast" Engine in for a refresh and mods.
« Reply #11 on: June 11, 2017, 07:52:50 PM »
Alloy dust in the lungs is the main concern when grinding like that  {even though i never wear a mask myself  :-)}

Not faulting your porting but grinding the tranfer diverders  is really old school
Look at  one of the fastest two strokes every built
https://pbs.twimg.com/media/B24_qCSCcAAA_5S.jpg:large
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Offline sandblaster

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Re: Sean Collier's "The Beast" Engine in for a refresh and mods.
« Reply #12 on: June 12, 2017, 02:26:31 AM »
Lol... Yes, you have mentioned that before.
What you see is not finished so don't read too much into it.
As you know, different bikes respond to porting each in their own unique way depending on what you are after.

Some of us have talked about doing a top end build off.
All we need to do is define what the parameters are then everyone build a top end with piston.
I'm thinking stock bore, stock port timing, and mod your Wossner piston however you want.
As for the head, we should all use the same head which it's parameters will be defined if we decide to do it.

I'll build the bottom end... Stock... and put every top end on it and dyno it.
This will be a lot of work but it would be a sure way to help clear up the muddy waters on what works and what does not work on a KX500.

Of course the parameters are subject to change if enough guys decide to participate.

Let me know who all might be interested in participating.
« Last Edit: June 12, 2017, 02:29:43 AM by sandblaster »
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Offline sandblaster

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Re: Sean Collier's "The Beast" Engine in for a refresh and mods.
« Reply #13 on: June 14, 2017, 11:20:29 AM »
Oh... and we are modding the KX450F rear brake caliper that we are adapting to the KX500 swing arm.
It's rough right now so don't get excited  :-P

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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline sandblaster

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Re: Sean Collier's "The Beast" Engine in for a refresh and mods.
« Reply #14 on: June 14, 2017, 05:22:47 PM »
NIssin is gone...



More holes...

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