riddle me this 2t owners

hoova
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hoova
Edited Date/Time 11/4/2013 11:29am
I own a 2013 250 sx and wanna drop some $$ on it so I was wondering bout mods for it engine wise. I originally I wanted pc works pipe + 304 silencer but rode a sx '10 with the gnarly + powercore 2 and actually love it. Only problem is it's down on power up top and this is a problem I'd like to fix while keeping that exhaust. Was just wondering if this was possible with carby mods (oval bore, dicksracing carb,etc.) and a larger base gasket. Any other suggestions would be great too thanks.
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Lightning78
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Lightning78 11/4/2013 12:40am
11/4/2013 12:40am
Just send the cylinder and head to eric gorr and have him port it for $220.....its cheaper than a pipe alone!!!!

After the first of the year Im getting my RM DIALED by him........its going to be a beast!
Joe Jet
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Joe Jet 11/4/2013 2:21am
11/4/2013 2:21am
Dont bother porting. The KTMs are killer out of the box in that respect. Try the intelajet carb mod. That is a definite plus for improving top and over rev. Hopefully you wont have mismatched mods as the gnarly pipe is really designed to improve low end for off road guys.
Grizz
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Grizz 11/4/2013 4:21am
11/4/2013 4:21am
What does the T stand for?
resetjet
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resetjet 11/4/2013 4:28am
11/4/2013 4:28am
The problem is the Pipe. That is what the Gnarly does. Its a woods pipe.

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MxKing809
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MxKing809 11/4/2013 4:37am
11/4/2013 4:37am
Set the piston height flush with the top of the cylinder (usually use smaller base gaskets), and run an fmf fatty and shorty combo. THEN..... Find gas that doesn't contain Ethanol..... Boat gas from a marina usually isn't tainted like car gas. It has the same effect on combustion as race gas (longer burn). If you find 91 octane or higher without ethanol and have the deck height set you're good to go. The carb is nice.... But not a nessicity.
TeamGreen
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TeamGreen 11/4/2013 4:40am
11/4/2013 4:40am
MxKing809 wrote:
Set the piston height flush with the top of the cylinder (usually use smaller base gaskets), and run an fmf fatty and shorty combo. THEN..... Find...
Set the piston height flush with the top of the cylinder (usually use smaller base gaskets), and run an fmf fatty and shorty combo. THEN..... Find gas that doesn't contain Ethanol..... Boat gas from a marina usually isn't tainted like car gas. It has the same effect on combustion as race gas (longer burn). If you find 91 octane or higher without ethanol and have the deck height set you're good to go. The carb is nice.... But not a nessicity.
VP Leaded 110, C12 or MRX02. I've used both T4 & U4.4 in 2 strokes w/ success, too.
RCF
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RCF 11/4/2013 4:41am
11/4/2013 4:41am Edited Date/Time 11/4/2013 4:42am
if you didn't buy the bike new make sure the wires for the hardest ignition curve are plugged in if they are not pluged in you will lose top end
tomcat
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tomcat 11/4/2013 5:37am
11/4/2013 5:37am
T is for two stroke and F is for four stroke
Grizz
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Grizz 11/4/2013 5:42am
11/4/2013 5:42am
tomcat wrote:
T is for two stroke and F is for four stroke
Yea, but... then what is the 2 for?

Grinning
crashnburn11 11/4/2013 6:56am
11/4/2013 6:56am Edited Date/Time 11/4/2013 7:01am
The "t" actually stands for takt, which is german for stroke or revolution. You can have 2t or 4t.
yota
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yota 11/4/2013 7:01am
11/4/2013 7:01am
wow, I have a 12 and the engine is pretty bad ass with just a PC silencer and proper jetting (RM 250 needle helps). I put in the softer powervalve spring for woods, seems to have better roll on response and doesn't break the rear wheel loose as much. My buddies 13 does seem to have a more linear power than my 12 though. Getting the suspension right is more important imho. I also bent the crap out of the taffy excel rims, they are not you normal excel's.



race250r
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race250r 11/4/2013 7:17am
11/4/2013 7:17am
What's the story on the Showa's up front there, yota? A-kit or did you source a pair and retro fit them? Looks beautiful.
seth505
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seth505 11/4/2013 7:19am
11/4/2013 7:19am
I would like more over rev on my 13 as well. I am told by lots of people that the PC pipe will help the most with that. Going to get PC once I decide to throw down some money on that.
GeorgiePorgie 11/4/2013 7:28am
11/4/2013 7:28am
My buddies 2012 KTM 250SX had the FMF factory fatty full system. Not only did it look bitchin' but it ran excellent.
IWreckALot
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IWreckALot 11/4/2013 7:34am
11/4/2013 7:34am
tomcat wrote:
T is for two stroke and F is for four stroke
Grizz wrote:
Yea, but... then what is the 2 for?

Grinning
It means that it is second best to four strokes.
rallendude
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rallendude 11/4/2013 8:04am
11/4/2013 8:04am
I haven't tried it yet but all the KTM folks rave about the ProCircuit Platinum 2 pipe.

Deck height, make sure you've got enough main jet, good fuel and go.
peelout
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peelout 11/4/2013 8:13am
11/4/2013 8:13am
drop a 300 in that bitch and go with a heavier flywheel bro, you can thank me later

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burn1986
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burn1986 11/4/2013 8:38am
11/4/2013 8:38am Edited Date/Time 11/4/2013 8:47am
Grizz wrote:
Yea, but... then what is the 2 for?

Grinning
Haha!
yota
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yota 11/4/2013 8:46am
11/4/2013 8:46am Edited Date/Time 11/4/2013 8:47am
race250r wrote:
What's the story on the Showa's up front there, yota? A-kit or did you source a pair and retro fit them? Looks beautiful.
08 A kit I took off my 500AF. Bought them used in 2010 or 11.
racerhansen 11/4/2013 8:53am
11/4/2013 8:53am
Forget all about those american pipes and get a Doma og HGS system, much better!
cwtoyota
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cwtoyota 11/4/2013 10:06am
11/4/2013 10:06am
Lightning78 wrote:
Just send the cylinder and head to eric gorr and have him port it for $220.....its cheaper than a pipe alone!!!! After the first of the...
Just send the cylinder and head to eric gorr and have him port it for $220.....its cheaper than a pipe alone!!!!

After the first of the year Im getting my RM DIALED by him........its going to be a beast!
I wouldn't port a 250 unless you are racing the 250cc class only.

I have Eric's 295cc mid/top kit on my '10 YZ250. I'm very happy with it after a year of racing in the Vet B and Open B classes.

Consider getting a KTM 300cc jug and a PC Platinum pipe. That combo would give you more torque than a 250cc / Gnarly combo and more mid/top than the 250 with porting. From what I understand, the KTM 300 cylinder is a bolt-on deal for the 250SX.

The extra 45cc from the big-bore makes the perfect two stroke. You can run a smaller rear sprocket and it will still pull harder than a 250 out of corners. That means less clutch and less shifting.
Digger29
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Digger29 11/4/2013 11:15am
11/4/2013 11:15am
peelout wrote:
drop a 300 in that bitch and go with a heavier flywheel bro, you can thank me later
I did the 300kit on my 13 250SX & that along with a straight 38mm Keihin carb & the PC XC 300 pipe with the 304 shorty & my bike is Fn animal!!. It's very important to set the cylinder & powervalve height correctly to get the most out of it especially on top. So in closing & do as Peelout says, drop the 300 kit in it that bitch & you'll thank us both later.
GuyB
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GuyB 11/4/2013 11:21am
11/4/2013 11:21am
Grizz wrote:
What does the T stand for?
It's for people who don't know how to spell -stroke.
newmann
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newmann 11/4/2013 11:29am
11/4/2013 11:29am
I sometimes try the search option first. Quite a bit of info here on the SX250's.

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