that front bearing is only made to be 6.3mm on the inner race as to alleviate the need for a spacer behind the collet ;)

i use tko bearings for my replacements

peter distributes quality products

you can use CB-MR 25814 and CB-607C-2RS for replacements , the new double shield front novarossi bearing is the best on the market at the moment though :nod:

Thank you very much :)

NP bro ;)

here is a testimonial,
thank you very much Monty for your knowledge sharing, I just broke in a Novarossi N21BF Limited and all I can say is WOW, really blown away by this little sucka. While I was on the track all I kept gettin is "what motor is that?", and "that motor looks great!". Once I mentioned its the $150 nova, it just shocked the gawkers. Also, your recommended Odonell 100 plug is tha shitz. As soon as I got to the track, a buddy asked me for a plug, he's got 2 gallons on his N21BF, I gave him a ODO 100 and said I haven't run it yet but heard it was the plug to run in humid midwest summer time. He mentioned he hoped not to be chasing the tune for the rest of the afternoon w/ the new plug, I told him just try it. He came back 20 minutes later giving much thanks and saying Idles better and was running 20 degrees cooler.
During my break-in, the Nova #6 that came with the engine only lasted till the second tank on the track (I keep it a little fat on break in) I went to the ODO 100 and all I can say is thank you Monty for sharing your wisdom on the Novarossi mills. Every bit of info I've gotten from this thread is 100% accurate. Thank you for sharing what you know Monty.

Monty Please Help

when my 808 car is running the tune goes all funny

one minute the car is running fine the next it goes way rich and im not touching any needles WHY IS THIS it is driving me insane :flaming::flaming::flaming:

new feul line new pipe 9901 nova P5 2 gallons through it

i tryed your base setiings HSN 3.5 out and LSN 2 turns out and it seemed way lean on the bottom

Please Help Ben

the 2 turns out on the bottom is counting turns out with slide barrel closed , try 4 with slide barrel open .

that definitely sounds like an intermittent air leak ben . check your tank or just replace with new , if that doesn't solve then it is probably a ripped o-ring in the carburetor base .

Monty,

which came first, Plus 21-5K or P5X?

Monty,

Give a call tomorrow if you can, 361-877-3033. I need to get a new mill, +4 or FMS?

Thanks,

Jon

I have a Picco Evo 3 P7 .21 on my buggy. My motor has a bad bog i can not get rid of. It will run OK between 190-210 degrees, as soon as i go over that it gets worse. Now after i finished my break in, i was racing on my track and my filter came off and drove it for about 30 ft. I tore the motor down cleaned it out and it seem to run fine to me(These piccos have a tight fitting sleeve). But lately I've noticed it has a slight bog. Now the piston goes up to about 1/8inch away from the top of the sleeve. I check the clutchs and they look fine.:flaming:

I need your input Monty.

Tyler

p5x;)

are you sayin you got dirt in there and lost compression?

i have had one filter come off in all my years and it just happened recently , i have since started using air seal to couple the carb neck boot and the air filter assembly:cool:


if your piston goes up past the area in the sleeve where the piston stroke goes when fully assembled when you have the piston and sleeve out of the block then you have definitely lost compression . if it was a fairly new engine i would say to send it to raya racing cause he will work some magic on it :nod:


some engines are very efficient and only run at those cool temps without acting too lean .


monty

Monty,

When I come out I need some fuel ( case of 30/11 ) some plugs ( 97t's and 100's......6 of each ) I may get a 5 port too......hahahaha...see ya soon big guy:tire:

thanks for the notice , will do

monty

Hi Monty

what do you think about the age-old technique of breaking-in the engine with an older (not washed-out, mind you) conrod and then replace it when "bad" pinch is finally gone?

thanks,
Paul

Monty - just wanted to let you know that the n21bf limited that I got from
you is awsome, the power from this little mill is great. Your service is
great, anyone needing a motor would be very wise to contact
MONTY!!

james - louisiana