hi, asking for a mate here.

for the .12, is the 6 ok to run with 16% nitro? or should i stick with 5?

i cannot find the 5's anymore.. only the 6's

6 is the prefered plug anyway

help!
 

hi!

i have this problem on setting my engine because when i was tuning it up,i seem to lost track of my settings.im new on nitro so can you please help me set this up?

temp:25-35 deg.
engine: mr21- bo1a
gas: cosmo fuel 25%
HSN: ??? from flush
LSN: ??? from flush
IDLE: ???mm

thank you so much!:)

Mugen Ninja MR Parts
 

Anyone know where i can get Mugen Ninja MR .28 parts??

Also connecting rod for .21 or .28??

Thanks

PARTS
 

I have the MRT version of the mr21- bo1a. It doesnt have the natural finsh case it has a dark gray coated case with a anti friction coated rear cover. The motor is still good shape, but I would like to get some parts for it to keep it alive. Does anyone know where they can be found at? Soembody has to have a stock pile sitting somewhere.

I am looking for MR 28 parts too? Any availability?

amain carries the conrod, but thats it for the .21 and.28, they are the same, tq engine conrod is the same, what are you looking for?

Best pipe to run
 

What pipe would anyone recommend running with the MR21 B01 in 1:8 truggy? How about glow plugs also? Thanks.

Ninja/GRP 2053 is the "official" pipe... I've always used that combo in truggy and always went very strong...

hey i have a chance to pick up a broken in grp from a guy at my track he got an engine sponsor so he dont need this it still new in the book and he broke it in on the bench. What im wondering is since he said grp went out of buss. can you still find part for this he said he got alot of extras for this .21 offroad and is asking 120 for all of it but this thread dont sound very good so i would like some input on what you guy think about it. he said he ran 1 gallon breaking it in and he is the engine or the to go guy from my track and is very good as well as myself but i dont know if saving money is worth the chance.thanks in advance it either this or a p5xlt a new one.

If its honestly got 1 gallon on it and you can get it for $120.00. Get it run the piss out of it until it won't go anymore have it pinched run it another couple of gallons then trash it. That's what I'd do!
If you don't want it tell him ill give him $120.00 for it.

I bought this motor with 2.5 gallons on it and it still rips. Used it in 1 race (and won that one) then I got a sweet deal on a Speed and now I'm using the Ninja for backyard racing. It runs really good. I'd run it until it's ready for the trash.

Ok thanks guys just wanted to check up a little on but once it goes it all over with then you can not find the parts anymore correct or they are just not worth getting i dont know what extra he has but he said he had enough too make a second motor do you guy know how a jp 1 pipe would work with this motor

ninja mr21-b01
 

does anybody know where i can find replacement parts for this motor. I need a new piston and sleeve cause im gonna be depressed if this motor has seen its last day lol

Is the P/S totally wrecked, or can you get by with a re-sizing? RayAracing is one of the best in the biz to bring P/S back to life. All you would need is to pick up a connecting rod and wrist pin.

http://www.rayaracing.com/

Parts compatability with the MR Ninjas for the parts you need are hard to find but not impossible. Look for conrods for the GRP .21, Tecnopower .21, Ascendency g5 .21 and you should be good to go.

hope this helps.