Hey guys I dont mean to sound like a dumb ass but I can not get my motor tuned right. I have a MR21 B01T with the magnisum head. Ok so I take it out today and run it for the first time scense break in which still isnt completly broken in all the way yet still has alittle metal pinch left in it. well what it's doing is before I put it on the track i warm it up for 2 or 3 minutes and get the idel perfect on it well so I thought the first heat race i run it for 6 minutes and notice about half way through the race it has a real high idel like so fast it wants to push me through the turns. Why is it doing this? I just cant seem to get the hang of tuning for some reason it seems like the longer i do it the worse I get. I have read every thing i can find about tunning and it doesnt seem to help me any. Can someone please help me or point me in the right direction to get help and help me when to know when to richen or lean the bottom end and top end.

I will figure it out thanks though.

I had the same problem with my GRP .28 tune-line, your MR21 B01T is the same as the GRP .21 tune-line take it to stock at 0.045 inch tops needle from flush going in the same for the bottom but from flush 0.045 out and for the idle it's 0.030 inch this is your best starting point. My .28 was doing it and it was to lean in the bottem very puchy and idled Hi Start with stock settings and you should find the sweet spot just hit the top needle still it run just under 190% and you should be good. Hope this helps

You have pm mugenize.

I returned your mail you have PM

can anyone help me find a carb bushing for a grp .28 or a grp ninja .28 its the little black thermo insulator that allows the carb to be used with the mill, just like this one http://www.amainhobbies.com/index.ph...inja-MR28-M01A

Look into contacting TQ racing.

thanx!

I have found a whole carb but I cant find the bushing alone, I have the carb, but just need the bushing

The bushing is not available alone.

Hi. does anyone know where I can get a GRP/Mugen Ninja MR B01 Block.

I think the front bearing spun , now no bearings will stay in . They just fall
out.

Otherwise, I guess I'll just make it a paper weight .

I have a Magnesium head for this engine as well.

Here you go, http://www.amainhobbies.com/product_...kcase-21-Buggy

i got a mario rossi tuned line 21 grp with 3 gallons with break in runs killer i will sell cheap tons of compression and runs like a bat out of hell modded also
pm me if anyone intrested

sry for this topic. i dont understand when they say flush .45hsn and lsn on the grp can u help how many turns that would be from bottom to out? i purchased this motor last month and im on my 9th tank and i lost where thefactory setting was and the motor stalls . i sealed the backing plate and carb. and also is their a tool to used for the meaurments on .045 turn from flush?

he is saying with the screw head flush with the body that it go's in use a set of calipers to measure it, and trun it in or out so it is .045 thousandths from flush. hope this help