Breaking in a new motor...

[Kintore]

I guess I did degreez, what are you getting for your motor?

[raptor]

Im just getting a new piston and rings and having the cylinder re-bored as it was scored or something. have a uni filter aswell to go in it. and few other little parts to make it look nice.

i was running the wrong amount 2 stroke oil. as i calculated the mixture wrong! DOH!

[Kintore]

Sorry to bring this up again, I got a question. Do I have to put oil down my cylinder via spark plug hole before I fire?
Or some pre mix down there?

Im ready to fire up my dads today

[crackshot]

Sorry to bring this up again, I got a question. Do I have to put oil down my cylinder via spark plug hole before I fire?
Or some pre mix down there?

Im ready to fire up my dads today

During assembly, you should have coated cylinder and parts with thin coat of 2 stroke oil.

Motoman is right, you want a slow engine, baby it. You want a fast engine, run the hell out of it after warming up.

[crackshot]

Sorry to bring this up again, I got a question. Do I have to put oil down my cylinder via spark plug hole before I fire?
Or some pre mix down there?

Im ready to fire up my dads today

During assembly, you should have coated cylinder and parts with thin coat of 2 stroke oil.

Motoman is right, you want a slow engine, baby it. You want a fast engine, run the hell out of it after warming up.

[Billy Golightly]

I personally do not reccomend coating the cylinder walls with oil before first firing. Assembling the cylinder dry helps prevent glaze and scoring early. The main and rod bearings should always be well lubed through.

[TimSr]

Its not necessary, unless it will sit for a awhile before being started and too much will probably result in a fouled plug. As soon as it starts, it will pull in oil mixed gas. The more importnat thing is to make sure there is some oil in the bottom of the crank area to lube the bearings before you put it back together. Typically there is some oil in there each you take it apart, but if it got flushed out, or cases split, or anything like that, you need to start off with some 2 stroke oil in the bearings. It takes a lot longer for a good coat of oil to accumulate in there than the cylinder where it comes in with the gas. For peopel running Blue Marble, its a good idea to coat the cylinder with oil, and heat it up to about 175- 200 degrees or so to allow the chemical agents to bond before installing it.

[daputz]

If you are going for longevity, break it in with multiple heat cycles gradually increaseing the rpm range.

If you are looking for a regular rider, vary the rpms (top to bottom) never keeping it in one range for any strech of time.

If you are looking for a racer, rebuild it, run it through a couple of 5 min cycles..........then race it.

I personally break my 2 strokes in by way of the 2nd method. I do compression tests every 1/2 hour or so untill I reach final top compression.............usually only takes a couple hours of varied throttle (unless you try to break in with full synthetic...........took me well over 10 hrs to top out on compression DOHHHHHHH ).

[slothminx]

[QUOTE=crackshot]During assembly, you should have coated cylinder and parts with thin coat of 2 stroke oil.

Motoman is right, you want a slow engine, baby it. You want a fast engine, run the hell out of it after warming up.[/QUOTE]

I disagree with this,

My opinion and how ive broken in my pinger motors has been 2 hours of varied revs gentle riding to seat everything in and feel for anything a miss with the engine. And then start to increase the revs over the next hour of run time until your riding hard. This should be done with cooling periods every 30 mins of riding.

[Kintore]

Sorry to bring this back once again, do I need a special ratio?
synthentic or non syn to break it in?

[crackshot]

DO NOT USE SYNTHETIC TO BREAK IN!!!!! The rings will never seat. Use a regular good ol' petroleum based 2 stroke oil in it.
Personally, I will never use a synthetic 2 stroke oil ever again.
As for you ratio, go by what manufacture recommends. You can always run rich and foul a plug or you can score, gouge up, burn down cylinder / engine by running too lean.

[TimSr]

Break it in with the same gas/oil mix at the same ratio that you will be running in it.

[Enigma]

Kintore don't be sorry, I was wondering about breaking in my tecate because I just had the cylinder replated. Once I get it back together, I think I will ride my bike easy varying the RPM's for 1 tank then ride it how I normally would (which means like the banshee beater it is ).