Originally Posted by MassiveMods

In Response to Pro Racer

Hey guys i havent had time to read all the posts including Ron's break in which im sure is great god bless him !

So ill just answer with the way i recommend , if ive repeated info already said i apologise

Ok

Clean flush the motor
Fuel up with same fuel you intend to run on
Pre heat engine with hair dryer to loosten up ( tight motors need this)
Start and very quickly tune HSN to clean 2 stroke , not rich not lean just nice
Put it on the ground on hi traction surface and run the thing around up to half throttle, Cool BDC and repeat for say 4 to 5 tanks depending on the situation

By the 5th tank it will have done some 750,000 revolutions , its ready to to go hard .

Ok reason it has to be hot ? So the sleeve expands to operating temp, this relieves the piston of smashing into an un expanded sleeve and linishing its self. Its not heat cycling like in lapped iron engines that need to be conditioned, it does help settle the motor but with the materials used one hot run will do this, the repeated heat cycling is purely to condition the motor to its desired operating temps. Running in an engine cool will create a certain tolerance fit between the piston and sleeve, the problem is when you go to lean on it and it gets hot the sleeve now expands further and can create loss of power and blow by.. Not to mention TDC notch.

Second thing , take your temp gun , remove the battery and throw the little F$#KKER in the ocean . Learn to use your ears , they will tell you much more of whats going on with your donk ( engine)

Now whatever the engine likes to run at thats the temp its happy with.. There are too many variables from situation to situation to recommend a temp or a needle setting. Things that will change this are fuel type, pipe, tank, pressure line, tyres, body etc etc

So i hope this helps guys

Cheers MM