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question about gas/oil mix
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Posted by: baseballplaya23

what mixture should i run and since im new to two strokes what difference does different mixtures make? i am running VP U-2 race fuel. all my mods are in my sig. thanks also what kinda oil?

Posted by: seth400

32:1 should be aight. some people run 40:1 but i think thats too lean. some people run 20:1 but thats prolly too rich.

Posted by: baseballplaya23

yea thats what i run with pump gas. i just didnt know if it should be different with race gas or what not. also what kinda oil should i run? i am running tech right now.

Posted by: Rich250RRacer

I run 50 to 1, Bel-Ray MC-1+ for nearly twenty years , in all my 250r's and CR's and have NEVER had an oil related problem of any type. Usually can pull at least a full season out of a top end too.

Posted by: NEPA250R

I run Klotz SuperTechniplate at 32:1.

Posted by: wilkin250r

Most people run somewhere between 32:1 and 50:1. Now, keep in mind exactly what this mixture is telling you. 32:1 means 32 parts of gas to 1 part of oil, so 50:1 has LESS oil than 32:1.

More oil means more lubrication, more safety. It also means more smoke, more money, and theoretically, less power output. Go too thin on the oil, and you could seize.

Posted by: baseballplaya23

hmm.... so what you think i should run with what i got done? all i do is race flat track. if i just ride i run 32:1 what should i run racing?

Posted by: Eddiesanders250

run it 3.5 gallon race gas 1 gallon premium to 1 quart of oil. thats about 30:1

Posted by: JTRtrx250r

quote:
Originally posted by wilkin250r
Most people run somewhere between 32:1 and 50:1. Now, keep in mind exactly what this mixture is telling you. 32:1 means 32 parts of gas to 1 part of oil, so 50:1 has LESS oil than 32:1.

More oil means more lubrication, more safety. It also means more smoke, more money, and theoretically, less power output. Go too thin on the oil, and you could seize.

YEP!!

jet it up for 32:1 or 40:1, alot of ppl running flattrack run at 40:1

Posted by: grabberblue

Amen on the Bel-Ray Mc-1 at 50 to 1. The guys at team honda turned me onto it in 1987 at the blackwater 100 and ive had happy crank bearings and no piston galling.

Posted by: Rich250RRacer

quote:
Originally posted by grabberblue
Amen on the Bel-Ray Mc-1 at 50 to 1. The guys at team honda turned me onto it in 1987 at the blackwater 100 and ive had happy crank bearings and no piston galling.

I stick with what works, and MC-1+ has never given me a problem. It has a fuel stabilizer in it too.

Posted by: JTRtrx250r

I run MC1 in my FL, for an old school premix....its not bad stuff, only premix thats let me hit 1250 degree's w/o catastrofic disaster on more that 1 occasion

, good stuff for air-cooled motors for sure

Rich...is MC1 "+" newer?

its been about a yr or 2 since I bought any, but not sure if Ive seen the "+"

Posted by: papatrx

quote:
run it 3.5 gallon race gas 1 gallon premium to 1 quart of oil. thats about 30:1

This is way off, thats 4.5 gallons gas to 32 ounces oil = 18:1 mixture.

Eddiesanders250, please get your facts straight before giving information that could cause damage.

Posted by: Rich250RRacer

quote:
Originally posted by JTRtrx250r
I run MC1 in my FL, for an old school premix....its not bad stuff, only premix thats let me hit 1250 degree's w/o catastrofic disaster on more that 1 occasion , good stuff for air-cooled motors for sure

Rich...is MC1 "+" newer?

its been about a yr or 2 since I bought any, but not sure if Ive seen the "+"

Actually no, I think it's always been "MC-1+"

Posted by: Damien Camplin

I run 50:1, race gas with motul 800.

Posted by: JTRtrx250r

quote:
Originally posted by Rich250RRacer
Actually no, I think it's always been "MC-1+"

LOL...then mine must be older than I thought , I still have 2 pints in the shop and all they say is MC-1