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Author Topic: piston movement/noise  (Read 15859 times)

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Offline sandblaster

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Re: piston movement/noise
« Reply #15 on: April 19, 2014, 08:03:38 AM »
+1
I would also clean up the transfers and intake bridges while I had it all apart.
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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline Foxx4Beaver

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Re: piston movement/noise
« Reply #16 on: April 19, 2014, 08:10:13 AM »
yup, providing the person/company who installed the sleeve did it correctly, the ports/transfers should've been cleaned up and matched already....but we know how that goes these days :wink: :lol:
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Offline sandblaster

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Re: piston movement/noise
« Reply #17 on: April 19, 2014, 08:20:11 AM »
I was think more along the lines of...
From this



To this



And from this



To this

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Offline Foxx4Beaver

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Re: piston movement/noise
« Reply #18 on: April 19, 2014, 08:23:21 AM »
ahh there ya go...it's all about being specific on what you mean. :-D
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Excuse me, ma'am...but you've got extremely nice legs!!!...what time do they open???                                                                                                               https://www.youtube.com/watch?v=n8tCgN3aryQ

Offline sandblaster

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Re: piston movement/noise
« Reply #19 on: April 19, 2014, 09:53:38 AM »
All your base are belong to us  :-P
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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline Foxx4Beaver

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Re: piston movement/noise
« Reply #20 on: April 19, 2014, 09:57:23 AM »
ahh...going jibber-ish  now. :lol:
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Offline karlosthejackel

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Re: piston movement/noise
« Reply #21 on: January 11, 2015, 05:06:03 AM »
Hi guys hope you are well and happy new year!!...im sort of opening this thread back up. Ive not had any time to play with the k5 that's why ive been quiet but in the last two weeks ive got the bottom end out,started to strip it and have also bought the tools to measure the bore properly etc.

Good news on the cylinder is that the liner measures up to new spec so it will just need a nice hone and a standard slug putting in there.

What piston would you recommend between proX ,wossner or wiseco? Ive read about the forged pistons need a good warm up before use which is how I roll anyway!

Im refreshing the crank and whatever else I find on the bottom. Best recommendation on a conrod would be cool as well.

As im in the UK im struggling to find parts at the right price. Ive bought a rad valve for it to get rid of the crazed inlet boot which was a great price from the US inc all charges
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Offline sandblaster

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Re: piston movement/noise
« Reply #22 on: January 11, 2015, 05:20:26 AM »
I'd run a Wossner piston and rod.
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Offline karlosthejackel

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Re: piston movement/noise
« Reply #23 on: January 11, 2015, 05:33:36 AM »
Quote from: sandblaster on January 11, 2015, 05:20:26 AM
I'd run a Wossner piston and rod.

Is there anyone in the US that you recommend to supply me both at the right price? Im struggling to find a wossner pison over here in UK but have found a rod but uk prices aint cheap!
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Offline sandblaster

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Re: piston movement/noise
« Reply #24 on: January 11, 2015, 05:38:13 AM »
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Offline karlosthejackel

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Re: piston movement/noise
« Reply #25 on: January 11, 2015, 05:51:06 AM »
Thanks Mike!  :mrgreen:
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Offline dave916

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Re: piston movement/noise
« Reply #26 on: January 11, 2015, 05:58:42 AM »
Quote from: sandblaster on April 19, 2014, 08:20:11 AM
I was think more along the lines of...
From this



To this



And from this



To this



when did knife edging the dividers come back into fashion{80s tuning}  :-)
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Offline sandblaster

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Re: piston movement/noise
« Reply #27 on: January 11, 2015, 06:23:50 AM »
Hmmm.
Team Green used it well into the 90's.
Every major engine builder I have received cylinders from still use it today.
I guess my question is, when did it go out of fashion?
Is there are documented dyno runs that proves or disproves this practice?
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Offline dave916

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Re: piston movement/noise
« Reply #28 on: January 11, 2015, 07:20:43 AM »
Yes

my early 90s tune tzr250  knifed but aimed in a certain direction


2002 rsa cylinder  Aprilla dyno 100s of cylinders ever year {moto gp racing}
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Offline sandblaster

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Re: piston movement/noise
« Reply #29 on: January 11, 2015, 08:07:59 AM »
Thanks for posting some pics.
Now, do you have dyno numbers with and without the knife edge specific to the KX500?
The reason  I ask is because I built a bottom end with a completely stock top end all new.
Ran it for about a month then pulled the top end off and ran a cylinder that I knife edged.
Still stock port timing and the difference was amazing.
Then again butt dyno's can be deceiving which is why I ask for specific dyno numbers.
Thanks!
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