I've Officialy Joined the 2 Stroke Nuts

Racer92
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Racer92 12/30/2013 4:24am
12/30/2013 4:24am
Bytor wrote:
40:1 Motul 800 2T
This
IWreckALot
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IWreckALot 12/30/2013 4:43am
12/30/2013 4:43am
Millerktm250xc-w wrote:
Just curious on what cross country series you are running? I've been doing Tccra this past season , some Toro and hope to catch a few...
Just curious on what cross country series you are running? I've been doing Tccra this past season , some Toro and hope to catch a few Torn next season. I switched to a 2 stroke from a kx250f and it was a good choice in the Texas heat and long races. I did not put in a fly wheel weight but got a rekluse core exp and it is awesome for x country in my opinion.
I race the TORN series. I haven't raced the TCCRA or TORO but I've ridden a couple of their tracks during practice. After riding the one TCCRA track, I vowed to never do anything TCCRA again. But then I found out it was one of the worst tracks they've ever had so maybe I'll give them another shot. The TORO track was this year at Bridgeport OHV I believe. I didn't like that track on lap one but lap two and three were a ton of fun. Not sure if that's my kind of racing though. TORN is pretty friendly on your bike compared to the other two series. They seem a little faster and maybe less technical. Maybe it's just a safer technical than the other two. The TORO track took you off a rocky cliff at one point that seemed like it would get someone injured or killed very fast. There was an alternate around it but you couldn't tell how sketchy it was until you were already on it. Oh well. I am partial to TORN after the two other tracks I rode if you can't tell. Lol.
usp4u
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usp4u 12/30/2013 5:20am
12/30/2013 5:20am
Politics, Religion, Mix Ratio, Oil

Instant message board debates.....Laughing









*927 @ 40:1
aFACEdismembered 12/30/2013 7:22am
12/30/2013 7:22am
I agree with what someone else said about castor. It gums up to fast and leaves residue sticking everywhere on your exhaust. Doesn't burn clean enough for me (personal opinion).

The Shop

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YAKMX
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YAKMX 12/30/2013 8:20am
12/30/2013 8:20am Edited Date/Time 12/30/2013 8:25am
Nice bike. Just make sure you understand the difference between gas rich and oil rich.Also 927 can separate from race fuel at temps below 40 degrees. It says this on the back of the bottle. And yes 927 in my weed whacker makes the job seem easier.
josh8811
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josh8811 12/30/2013 9:12am
12/30/2013 9:12am Edited Date/Time 12/30/2013 9:38am
KGAspeed wrote:
KTM 250XC for me with Motul 800 Full Synthetic at 50:1 Stock motor should be just fine with pump gas. Start messing with compression / base...
KTM 250XC for me with Motul 800 Full Synthetic at 50:1

Stock motor should be just fine with pump gas. Start messing with compression / base gaskets, then you may have to bump it up and mix some premium.
What they guy above said!

Anyway.. Race gas, 32:1, and how your bike smells is all dumb shit and doesn't matter or help on a stock YZ

Pick a full synthetic oil, belray, maxima, yamalube, Honda blue bottle, etc and stick with it.. Mix either 40:1 or 50:1 and stick with it.

Premium pump gas is fine. I personally avoid ethanol because I can't control how much is ethanol is really in the fuel, and his effects combustion (variables). Go to pruegas.org and find local stations that sell ethanol free pump gas. I did run ethanol for years prior to having a fuel injected bike, they are more sensitive.

You want to eliminate variables, not introduce them. Changing oils, ratios, and octane will make you chase your tail when it comes to jetting.

If everything else is the same, increasing your oil ratio, decreases the amount of fuel entering your engine, possible making a lean condition worse.

Create yourself a jetting it. Just buying a JD is the easiest, many would argue there's better needles out there. You need about 3 pilot, 4 mains and 3 needle options. Jetting it where all your performance or failures will originate. If you know zip about jetting, a JD kit will be the easiest/best place to start.

Fuel of a higher octane has an increased resistance to premature ignition, due to heat and/or pressure. In other words it's less volatile/more stable..
josh8811
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josh8811 12/30/2013 9:31am
12/30/2013 9:31am
Katoomey wrote:
full synthetic pre-mix @ 50:1 this is the end all be all. I'm not going to argue it, or explain it. just fuckin do it. ;)...
full synthetic pre-mix @ 50:1

this is the end all be all. I'm not going to argue it, or explain it. just fuckin do it. Wink

Castor bean is cool if you care more about the smell of the exhaust (who doesn't love it?) than the life of your motor.

If you ride hard enough to blow out the packing in your silencer regularly, then you should be running full synthetic oil.

I suppose if you don't ride at that level, semi-synthetic at 40:1 is fine, and will be less expensive.

if your a spode, then run whatever the hell you want other than the shit you get at the gas station.

...and nothing will keep the power valves clean other than keeping the bike properly jetted and on the pipe all the time.
Oh.. And this guy knows what he's talking about too..

That castor 927 shit smells good, every BRO knows that.. But there's a reason why I don't use it..
JW381
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JW381 12/30/2013 9:59am
12/30/2013 9:59am
There's probably nothing more fun than coming from a thumper to a 250 smoker. Scary at times, but so fucking fun.
HenryA
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HenryA 12/30/2013 10:36am
12/30/2013 10:36am
Spartacus wrote:
That smell, can't you smell that smell……. [img]http://www.maximausa.com/shopping/images/Castor%20927%20Liter%20Bottle.png[/img]
That smell, can't you smell that smell…….

YES YES YES!!!! Woohoo Woohoo Woohoo
Socket946
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Socket946 12/30/2013 11:06am
12/30/2013 11:06am
Just to throw my hat in the ring.

(Don't take this Advice, I've never owned a YZ250)

60:1 Motorex full syn Crosspower 2t...

Bike ran great, and wore like iron in my KTM 144SX.
NV/HC!
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NV/HC! 12/30/2013 2:04pm
12/30/2013 2:04pm
FGR01 wrote:
Avoid Maxima-927. It carbons up the silencer packing and is a PITA to clean and repack. Yeah it smells cool but it ain't worth it. Especially...
Avoid Maxima-927. It carbons up the silencer packing and is a PITA to clean and repack. Yeah it smells cool but it ain't worth it. Especially if you end up putting on a spark arrestor. 927 will gum that thing up quick.

I tried Maxima KR2. It ran great but was a little spoogy. Didn't seem to burn completely. Switched to Maxima-SuperM and it's great. Runs excellent and burns clean.

Stick to 32:1. That is what Yamaha recommends and what the stock jetting is tuned for. Lots of guys run 40:1 but that will richen up the bike and the jetting will need to be leaned out.
I had the same experience with 927.

I always use Motul 800, and it burns really clean. 40:1 or 32:1. I think like FGR says...run 32:1 since it's recommended and it never hurts to have that bit of extra oil.

To tell if the bike is lean or rich. If you slowly go through the range of throttle positions, it will rev up too fast at different points if it's lean in any area of jetting. If it's too rich it will burble. Pretty simple, just takes some experimenting to get it.

Also don't make the common mistake of thinking 32:1 is richer than 40:1. 32 is more oil, but not richer in jetting. More oil flows at a lower speed through a jet before mixing with the air. Therefore, it's actually leaner. But not dangerously leaner.
kzizok
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kzizok 12/30/2013 2:19pm
12/30/2013 2:19pm
Don't get too bogged down with all the info out there. Run Yamalube, find some good gas, and get it jetted and ride it. There are as many products as opinions but the reality is the YZ 250 is a great bike stock.
fosheezie
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fosheezie 12/30/2013 6:40pm
12/30/2013 6:40pm
Spartacus wrote:
That smell, can't you smell that smell……. [img]http://www.maximausa.com/shopping/images/Castor%20927%20Liter%20Bottle.png[/img]
That smell, can't you smell that smell…….

ahhhhh! best smell at the track.. I love this stuff
RudyRayMo
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RudyRayMo 1/1/2014 11:10am
1/1/2014 11:10am
Castor 927 is the best when i can get it, I run amsoil dominator too. I dont know how good klotz is performance wise but that stuff will make u follow somebody all day it smells that good.
MotoGuido
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MotoGuido 1/1/2014 12:17pm
1/1/2014 12:17pm Edited Date/Time 1/1/2014 12:19pm
I've been running the Maxima Castor 927 in my 2003 CR250 for almost 4 years now. I'm really shocked to read the negative reviews on this thread. Is it possible that they've adjusted their formula over the years? I seem to have noticed that it doesn't have as much of the distinct castor bean aroma as when I first started using it, so maybe they're adjusting the formulation. Regardless my bike runs awesome on it at 40:1 for racing and 36:1 if I'm riding sand. I've only seen "spooge" the few times I've rode the bike on tight trails lugging the engine which is not at all what the bike is setup for. On the track it burns really clean. During topend rebuilds the powervalve has also been clean.

You know what I think I'll go take a look at my powervalve right now because this stuff has been running clean as ever for me. The smell is just an added bonus....
mx757
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mx757 1/1/2014 1:50pm
1/1/2014 1:50pm
I ran my 05 YZ250 at 44:1 on the Amsoil Dominator. Had 0 problems, and after running compression tests to check everything out, ran 2 full seasons (26+ races a season, plus practice days) on the same top end. When I got my 125, I changed to 40:1 just because I was worried about the high constant RPMs. Ran that one full season, and still 0 problems.
Bigoldbeef 1/1/2014 4:11pm
1/1/2014 4:11pm
CamP wrote:
Don't waste your money on VP. Your bike will run great on 100LL and you'll save $7/gal. With the exception of a small flywheel weight, don't...
Don't waste your money on VP. Your bike will run great on 100LL and you'll save $7/gal. With the exception of a small flywheel weight, don't touch the engine because it's damn good right out of the box. Focus on getting the suspension setup
I ran strictly 100LL in my new husky for the first 15 hours since new, bike ran great, but it would not idle for more than 1-2 seconds before dying. All I did was switch to 50/50 110 race gas and 90 octane Non-ethanol gasoline and now it idles great, still runs the same as on 100LL though...
BAMX
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BAMX 1/1/2014 5:00pm
1/1/2014 5:00pm
Motorex at 32:1. Also, get the suspension setup for you.

Pit Row

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Stonedmason
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Baton Rouge, LA, USA
Stonedmason 1/1/2014 6:06pm
1/1/2014 6:06pm
Castor oil is a good lubricant and forms a polymophous wax or varnish that in the event of oil starvation acts as a last protection . on the other hand that wax or gum can stick powervalves and rings . So it is really up to you . In my 07 cr 250 i run motoul 800 and everything is tight and clean all the time ...
Offroad guy 1/1/2014 6:20pm
1/1/2014 6:20pm
I have never been a big fan of av gas. Av gas is designed to run in a motor that runs at lower rpm's and high altitude. I know people who swear by it since its used in planes you can buy it anywhere in the country and get consistent quality.
CamP
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CamP 1/1/2014 7:09pm
1/1/2014 7:09pm
Offroad guy wrote:
I have never been a big fan of av gas. Av gas is designed to run in a motor that runs at lower rpm's and high...
I have never been a big fan of av gas. Av gas is designed to run in a motor that runs at lower rpm's and high altitude. I know people who swear by it since its used in planes you can buy it anywhere in the country and get consistent quality.
That's incorrect. Avgas is designed to prevent detonation in high compression piston engines when they are at their heaviest load. The heaviest load on the engine occurs at take-off when the engine is at wide open throttle.
CamP
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CamP 1/1/2014 7:17pm
1/1/2014 7:17pm
Bigoldbeef wrote:
I ran strictly 100LL in my new husky for the first 15 hours since new, bike ran great, but it would not idle for more than...
I ran strictly 100LL in my new husky for the first 15 hours since new, bike ran great, but it would not idle for more than 1-2 seconds before dying. All I did was switch to 50/50 110 race gas and 90 octane Non-ethanol gasoline and now it idles great, still runs the same as on 100LL though...
100LL runs leaner than high octane leaded fuels like C12 and 110. My guess is that your pilot jet and/or air screw was a little lean on the 100LL.
scrubbin627 1/1/2014 7:35pm
1/1/2014 7:35pm
I ran Spectro with 93 octane pump gas for years with no problems. Before that I ran 927 and before that I ran H1R
Hut
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Hut 1/1/2014 7:37pm
1/1/2014 7:37pm Edited Date/Time 1/1/2014 7:41pm
Way back when I always ran PJ1 Goldenfire Pro with Trick race gas. Nowadays for my CR250 I mix at 40:1 with Honda HP2 and Premium pump gas and it does fine. Most of my riding has been above 4500 feet though.

alexk417
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alexk417 1/1/2014 7:37pm
1/1/2014 7:37pm
32:1 Honda HP2 is what I run in my YZ, and that's with 93 octane. Seems to run well!

I also run a NGK BR8EIX, it's a couple more bucks than a BR8EG but last longer IMO.
newmann
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newmann 1/1/2014 7:43pm
1/1/2014 7:43pm
I know someone who swears by this. Not only does it double your warranty, but when was the last time you saw a Stihl that shit the bed?


Hut
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Hut 1/1/2014 7:49pm
1/1/2014 7:49pm
I remember guys that used to swear by Chevron brand 2 stroke oil in their race bikes. That has been a long time ago I wonder if that stuff is still worth a look? Huh
Hut
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Hut 1/1/2014 7:53pm
1/1/2014 7:53pm
newmann wrote:
I know someone who swears by this. Not only does it double your warranty, but when was the last time you saw a Stihl that shit...
I know someone who swears by this. Not only does it double your warranty, but when was the last time you saw a Stihl that shit the bed?


I haven't heard anyone complain about a Stihl saw ever but there have been many days when I wished our big ass Husky would have shit the bed so my aching back could get a rest... Pinch
CamP
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CamP 1/1/2014 8:00pm
1/1/2014 8:00pm
At $26 a gallon, I swear by this.

Hut
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Hut 1/1/2014 8:04pm
1/1/2014 8:04pm
I should give that Lucas oil a try good USA company and supports racing large scale, our kind of people. Cool

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