The Great Debate: Two Stroke vs. Four » Page 3 » QUADCRAZY ATV Community Forum

DirtDemon · 09-30-2007, 09:26 AM

I have yet to ride any of the newer 450's but I have ridden an piped 660 Raptor. It has lots of torque, but it still seems slow compared to my 500R.

bansheerider · 12-01-2007, 10:45 PM

I have to agree with Dirtdemon all the way, like me he knows the pros and cons of both 2 and 4 stroke motors.

bansheerider · 12-01-2007, 11:09 PM

The leaner the meaner yea, but remember if u run to lean u will cause motor wear faster then normal because of more friction ,or if u run to rich u will make the motor run hot because u would be burning more oil then gas, the gas helps to cool the pistion. BY THIS I MEAN THE OIL TO GAS MIXTURE RATIO'S!!

mywifeknowseverythin · 12-02-2007, 08:33 AM

Quote:

Originally Posted by bansheerider

The leaner the meaner yea, but remember if u run to lean u will cause motor wear faster then normal because of more friction ,or if u run to rich u will make the motor run hot because u would be burning more oil then gas, the gas helps to cool the pistion. BY THIS I MEAN THE OIL TO GAS MIXTURE RATIO'S!!

Hmmmmm,,,,,,

RICHER and LEANER.

I know these terms can cause some trouble for those who are new to the sport or new to carburetor tuning and they are often used incorrectly. The terms RICHER and LEANER refer to the amount of GASOLINE being delivered to the engine and not the amount of oil. If you’ve done a plug reading at wide open throttle and the plug indicates you are running rich ( dark brown to black ) this is an indication that too much gas is being delivered to the engine and not too much oil. I know there are people that will say "You’re running too rich, try to change your premix ration from 42 parts gas: 1 part oil ( 42:1 ) to 50 parts gas : 1 part oil, that should lean things out a little ". This is in fact increasing the amount of gasoline ( 8 more parts of gas for each part of oil ) and causing the engine to run RICHER rather than leaner. If you remember richer and leaner are referring to the amount of gasoline being delivered this will all make much more sense.

A Plug Chop is the First step in Dialing in your Ride. With proper Jetting, Proper Needle Clip Position, and a properly Set Float.....You can Dial in and run 50:1 without ANY PROBLEMS! Mines been running for 22 yrs With 2 top end rebuilds and 1 Crank Bearing Replacement...

However,,,,I dont Recommend anyone doing that unless they know what they are doing...