hi I was hoping that someone could tell me what exhaust to pair a Axe Rossi .21 X2 evo cobra with

I have run the Axe Rossi 2050 and it is a GREAT pipe all so run the JP3 pipe all so a GREAT pipe to run with that motor. I have a New Axe Rossi 3010 pipe to run with my New Axe Cobra X2 and i will let you guys now how it works.

How much better is this engine compared to the AXE Rossi 198R21?

The Serpe Motor is a GREAT motor for a buggy. I run it in my buggy on a BAD Dusty track wear you could not use all the Power and the motor worked Great it was so Smooth it help me keep from Blowing the tires off coming out of the corners. I ran it in the 2nd Round of the Arkansas Pro Series and Qualified 2 in the A Maine with the motor and had some troubles and had to drop out of the race but the Little Serpe motor is a GOOD motor for the Price it cant be Beat.

how do you think the serpe would be in a truggy?also could you pm me a price for it also a price for the cobra x2? thanx

toofless i would not run the Serpe in a truggy i just don't think it will have the bottom end to work good in a truggy it is a Great buggy motor if you are looking for one that is Smooth with good top end. The Serpe Motor works good on Big Out Door Tracks with Sweeping Turns and Long Straight's .

Ok so I ended up getting the cobra evo X1 cause the price was too good to refuse, I'm currently breaking it in, I have done about 25mins of 3min cycles and bout 40 mins of 5mins cycles, how do I know when I can stop using a heat gun to start, this thing still has heaps of pinch and I'm very impressed so far

You can take the Plug out and check to see if it has any Metal to Metal Pinch Left. If the piston gets stuck at TDC then you need to keep heating it with the Heat gun.

But to be honest i use a Heat gun all the time i have a motor that has 11 gallons on it and i use a heat gun on it to this day it make it EZer to start and help with the tune.

Look at the Competition Heat all you do is put it on you head Plug it in and it keeps your motor Right at 200 in temps and you can leave it hooked up all day. Ron at Cold Fusion sales them Give him a call he can fix you up. www.coldfusionrcproducts.com Are his number is(352) 342-4033

i'm no expert by any means.

but if you have followed my posts on this thread, it's how i have been tuning the engine. i ran my engine in following the run in procedures included with the engine.

i stopped using the heat gun (aka hair dryer) on my engine since about the 5th time i started running it on the road. but it's been starting first bump ever since.

i had a few minor tuning issues when running the engine in. basically i did run it a few times too lean, but that wasn't entirely my fault as the engine wouldn't start on the factory rich setting. this only happened when i gave the engine a burst to WOT, i richened it up straight away.

it's now seen 3L and it's getting better all the time.

basically at race tune. 8.5min run times. with all the power i need and more.

engine has heaps of power. can't be happier.

GREAT to here you are right on the money with the run times that is about what i get out of my X2 8.5 to 9min.

Guys i went to the AMS race this weekend and finished 5th in the B Maine with the Only Axe Rossi motor in the Buggy Class the motor had TONS of power and ran GREAT all weekend temped right at 230 to 240 all weekend.

I have some pic of my buggy i will post up in the Next day are so.

I would like to THANK Axe Rossi for the GREAT motor i had this weekend and All so Cold fusion Fuel and Kal-Gard THANKS so much guys with out all of you i would not have done so good.

Guys wonted you see how GREAT my Axe Rossi Cobra X2 did for me at the 2010 AMS Race. Ran Cold Fusion Fuel 30% Majic with my X2 all weekend motor ran 230-240 temp all weekend and run time was right at 8 1/2 min.

Hey guys....Trying to help out a fellow racer.He has a new Mamba he is running in.He is using the Axe #5/6 plugs.The issue he is having is leakage around the plug and the head button.He said one plug would leak and another wouldnt.
He is a nitro boat racer turned off-roader now so he is not totally new to nitro.Anyone ran into this?Thanks for any info.

All he needs to do is make sure it is Tight and when i say tight i mean Tight so tight you think its gone to strip the plug out and it will stop Leaking.

All so most of use Axe Rossi guys run the O'Donnell #97 turbo glow plug it dont Leak as bad and we are getting longe run time out of these plugs.

If you need any more help Just let me know i am more then Glad to help.

Thanks for your time Nova....I did tell him that it looked like yall were running the 97T.