upon further inspecting I found the shims stuck under there. still having a rough time keeping it to idle right now the HSN is about 3 turns from closed and the LSN is also about 3 turns from closed. using an OD purple sport plug and traxxas 20% top fuel. gives me a hard time trying to start first thing as well. Is a N21BF Limited with a dynamite 086HS pipe worth rebuilding? or should I just get a new engine?

Try a novarossi plug 5 or 6. How fresh is the fuel?

Has anyone tried C5TGC Plugs? They are hot and recommended for cooler temps. My track see between 80-95F. Do you recommend the hotter plug? Our OS friends are always using P3 plugs which is a hot one and they seem to last forever. I currently use C6TGC and run 25% nitro.

For 85-90°F I would highly suggest you stick with c6tgc

are you having any issues that you are trying to resolve by switching to a hotter plug?

Occasionally you can find one on eBay for about $550. Still outrageously expensive though.

i thought i saw that absolute has them for 529.. front steel bearing

Murnan Modified has them for $489 stock and $549 modded.

I have a question which pipe produces more torque a 2084? or 9901?

In my experiences with the Bonito and Keep-Off XL in a truggy, the 2084 is more favorable for tight/smaller tracks. Over the years I've gone back and forth quite a bit from large/flowing speed tracks to smaller/tight tracks and simply change the tuned pipe. I will say the Nova pipe I tested with the most torque has been the 9853 though I get better fuel mileage with the 2084. These experiences are with a truggy only, I do not race buggy.

Hey guys. Nitro season is starting in the north east for me and I won't to be super ready. Joey the dirt is coming to build our track in New York. I knw it's going to be awesome with big jumps. If u seen the fuel nats track in pa, it's the about that size. I have a novarossi roma coming for my truggy. What is the best pipe and manifold setup for this motor. That is good on big tracks small tracks and medium size tracks. Basically what is the best all around pipe setup for this motor made from novarossi thanks

Try the 9853/41001 setup with the Roma

9901 for sure...

How come your not running buggy?

http://www.amain.com/product_info.ph...-Bearing-Turbo this was 425.00 like last week rite? looks like i bought the last one for now

Hey guys I've got an old N21R limited edition that needs to be rebuilt. I only have one problem, I can't seem to find parts anywhere! I've looked everywhere I can think of but nada.

I wanted to have it as a spare, but at this point I'm not even sure it's worth the trouble. What do y'all think?