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Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc.


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Old 03-26-2018, 12:12 PM
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markwoodlief markwoodlief is offline
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Question 2018 GP Tuning

So i started with an EC, that i specifically asked for since I'm almost 50 and not as fast as I used to be.
I ended up with a GP300, (long story). And after the factory fixes it's back in my garage and rideable.
My question is how to tame the beast? I've been on 4t bikes for awhile, although had a KTM 300 for many years as well.
The GP is a fire breathing dragon. Serious arm stretcher with a very very touchy throttle. On my trials bike i just got the white throttle tube and it tamed my 280 very much and is way more controllable, especially in tough sections.

Curious if anyone has tried that with the new GG Enduro bikes?


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Old 03-26-2018, 01:56 PM
thumperrider1 thumperrider1 is offline
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In the past on my 300's I experimented with the suzuki needles and the G2 throttle cam system.

I'm actually looking to pick up an 18 XC300, so will post what I end up doing to it.
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Old 03-26-2018, 02:09 PM
Gottsell Gottsell is offline
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Adjust powervalve 1 1/2 -1/45 out and Suzuki needle necj. Works fine for me
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Old 03-26-2018, 03:26 PM
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Quote:
Originally Posted by Gottsell View Post
Adjust powervalve 1 1/2 -1/45 out and Suzuki needle necj. Works fine for me
is that on new 300?
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Old 03-26-2018, 03:34 PM
RS1 RS1 is offline
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Hi,

My 300 2018 work better with NEDW at 3, 42/172 and AS at 1.5.

T? 5 to 15?C , sea level.
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Old 03-26-2018, 06:21 PM
pigpen966 pigpen966 is offline
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My 300 GP runs great with the N3CJ #2, 42 pilot and 180 main in Ohio.Very linear power. I have my power valve set at the standard 2 turns.
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Old 03-26-2018, 07:51 PM
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Was told by a very knowledgeable unnamed source that it's the High Compression Head that is making it so dramatically different than the EC. .. SO loving the power, but the throttle needs tamed a touch for my old body.
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Old 03-26-2018, 10:28 PM
memphis2857 memphis2857 is offline
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It’s the jetting that makes it so “pipey”. Throw that p.o.s. N1EF needle in the trash can and get a N3CH or N3CJ needle with a 42p and a 180 main. Still a nice hit but mega bottom end. The NEDW needle works OK to but is rather rich on bottom and causes the bike to load up.


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Old 03-27-2018, 12:56 AM
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[QUOTE=memphis2857; The NEDW needle works OK to but is rather rich on bottom and causes the bike to load up.


Sent from my iPhone using Tapatalk[/QUOTE]

I have to second the suggestion of a Suzuki needle and the G2 #400 throttle, that will make it much more like a 4stroke. The throttle was a must for me when I had my 300 but I don't need it on my 250 (even though I have minor muscle control issues) so you might get by with just a needle change. I run a NEDW in my 250 and it is a huge difference from the N3-- I was running. It runs super clean right from idle and it will crawl around for hours and never load up. Yes it is a little rich on the bottom but that makes it strong without being snappy and like I said it never loads up. My 250 runs just a little flat in the midrange but that shouldn't be a problem on a 300. My bike revs out fine on top.
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Old 03-27-2018, 01:16 PM
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Bud is the man.. i mentioned this to him yesterday and BAM!!

https://www.gasgaspartsguy.com/THROT...talogId=-15678

Love that guy!!!!
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