i thought to break in a two stroke you just let it idle with like a fan next to it for proper cooling for a while..

well some kid on youtube did that when he converted his blaster to a 240.

i wouldnt know, and i wont know for a while..i won have a new quad for a WHILE..

 

<div class="FTQUOTE"><begin quote>Originally posted by: 4strokemurder

i thought to break in a two stroke you just let it idle with like a fan next to it for proper cooling for a while..



well some kid on youtube did that when he converted his blaster to a 240.



i wouldnt know, and i wont know for a while..i won have a new quad for a WHILE..</end quote></div>

This is "old school" thinking! Modern bearings have tighter tolerances, and don't need the break-in period that they needed a generation ago. Also, they don't need the thicker oils that they did in grandpa's day.

You know what Honda does on its recent models, they recommed a break-in period of only 15 miles!!!! They dyno every machine, THROTLE PINNED THROUGH EACH GEAR BEFORE IT LEAVES THE FACTORY. Why do they do this???? Maybe to get the rings properly seated before it ever leaves the factory.....

 

Well then if it is already done from the factory why would I need to do it too? I have never broke in a new machine that wasn't a Honda. Are others different? Well I did the Rhino, but we just rode it semi hard. It does enough engine braking on it's own. But I have done this method on 2 different Rhinos with no problem.

Recon, what is your opinion on how to do these machines?

 

<div class="FTQUOTE"><begin quote>Originally posted by: Stoopidbot

Well then if it is already done from the factory why would I need to do it too?</end quote></div>

2 minutes on the dyno is better than nothing.....but a wise Honda owner is going to be sure the job gets properly finished! I spend a week doing hillclimb breakin runs every day.

As for Rhino's, same thing goes. Same goes for your car or truck too!

 

We have to agree to disagree! I've been using my method for 20+ years and I've had great luck with all my vehicles. Both of our methods seem to be working so...rock on!

 

I'm gonna have to agree with reconranger on this one. I'm a mechanic and in my understanding, when doing an engine break in, you are trying to seat the rings. Main and connecting rod bearings will break in normally as long as you keep good clean oil in to start out with. Two stroke engines use assembled crankshafts usually with ball or roller bearings to compensate for low lubrication, so they will break in normally as well. 4 stroke engines usually have 4 piston rings, 2 for compression, 2 for oil control, while 2 strokes will just have 2 compression rings. Proper piston ring seating is done by starting out at a low speed (not from a dead stop), and then accelerating very quickly to a high speed and allowing it to coast down to a low speed, and then do it all over again, I'd say up to 10 times for 450s. That is the proper way to do an engine break in.

 

...so..noone really answered my question. on a 2 stroke, do you just let it idle with a fan running by it?

 

<div class="FTQUOTE"><begin quote>Originally posted by: Rocker_Ace

I'm gonna have to agree with reconranger on this one. I'm a mechanic and in my understanding, when doing an engine break in, you are trying to seat the rings. Main and connecting rod bearings will break in normally as long as you keep good clean oil in to start out with. Two stroke engines use assembled crankshafts usually with ball or roller bearings to compensate for low lubrication, so they will break in normally as well. 4 stroke engines usually have 4 piston rings, 2 for compression, 2 for oil control, while 2 strokes will just have 2 compression rings. Proper piston ring seating is done by starting out at a low speed (not from a dead stop), and then accelerating very quickly to a high speed and allowing it to coast down to a low speed, and then do it all over again, I'd say up to 10 times for 450s. That is the proper way to do an engine break in.</end quote></div>

That is what I will do...just not up a giant hill!

And I have never broke in a 2 stroke like that. I just ride it while fluctuating the rpms. A lot of warm up and cool down.

 

<div class="FTQUOTE"><begin quote>...so..noone really answered my question. on a 2 stroke, do you just let it idle with a fan running by it? </end quote></div>
The only way to load the rings is with air pressure. The only way to get the most air pressure in the cylinder is wide open throttle. You can't do this at idle.
Two stroke, four stroke, it makes no difference. Load them and load them hard for the best running engine.

 

<div class="FTQUOTE"><begin quote>Originally posted by: 4strokemurder

...so..noone really answered my question. on a 2 stroke, do you just let it idle with a fan running by it?</end quote></div>


Hell no!!! A 2-stroke ring needs to get seated properly just like a 4-stroke, and that requires that you develop high compression. Find some hills to climb...and descend.