Mugen Ninja JX21 B01A 5-Port Off-Road Competition Buggy Engine (Light Weight Head)
 

hey guys i posted a thread about this engine but i dont know if it is good for the losi 8ight 2.0 i am going to order it from A main hobbys is there any other places where i can get a cheaper price also i want to know a good breaking in method like tank 1 what should i do tank 2 what and so on
also i wanted to say thanks if you post a reply!!!

there is a good break-in bible in this folder.

If you do not know how to break in an engine, then do NOT buy a ninja.

why not buy the ninja if you dont know how to break in

really.... you gotta break in any engine

the ninja isnt any harder to break in than any other engine

i was agreeing with u

it's easy. Just watch your temps and don't stress the rod. In other words, use a heat gun and be gentle for the first few tanks. I break mine in a little leaner then the factory settings.

you should be able to put a race tune on it after a little more the a quart of fuel. I used to drag it on for a gallon etc, but i find the shorter, less lengthy break in is better, saves time, money and wear on your engine!

If u want ur engine to be bitchin run it for a tank on the box to get it feels ok and tempt at around 190, then for the nxt 3 tanks run it for 3 minutes on the road, it shouldn't go above 215 n every 3 minutes turn it off b let it cool to 100 then it's safe to restart again till ur done with those 3 tanks. After that pit it on the track got another 4 tanks rich on top n temping at 220 max I like 210, after that u can run it for about a gallon or galling n a half. After that change rod n bearings n ull be perfect. That's what I do with my race ninja n it's badass. I also have a practice one I pound into the ground n it honestly has all original internals, 11 gallons with a pinch n still good for practice, it lags a tad on bottom but still it's more then enough. It's all about changing filters n making sure ur bearings n clutch r fresh, if u start trying to push clutch bearings n the clutch to long it makes the engine work harder n hotter n it will toast everything. I also found a free drivetrain will increase engine life span because it works less. Have a good time with ur ninja it's a bomb engine.

Buy one of my hand fitted engines...breakin issues solved !