41021/2096, no need to remove head shim unless u need more torque and a little more runtime but virtus is a bit thirstier from what I heard.

Novarossi 4 shoe clutch, would this give me more run time then a standard 3 shoe stock clutch system? I'd be running it on a mito4.

On a truggy yes the 2096 is my go to pipe but no way on a buggy. The 9901 is smoother and better on fuel than the 2096. The 2096 has a very linear powerband and develops more power overall than the 9901 but is thirsty. That's what I've found in my testing. I prefer 9901/41021 on buggy with Novarossi 4,5 and 7-port engines and the 2096/41032 combo in truggy.

9901/41021 pipe in buggy. The 2096 just don't feel right in my testing particularly on a medium/small track as you describe. The 2096 is ideal for truggy in my testing. Leave the head shimming stock if you are running 25-30% nitro.

The 9901 is better on every nova header except the 41021 than the 2096. You can’t go wrong with a 9901/41033 combo really balanced from bottom to top and good fuel mileage. You can remove the copper shin after breakin if you want. The engine will have more pop and idle stronger, but that’s up to you.

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Fellas quick question , always ran nova , stepped away for a lil bit with my samurai..... Now may be coming back. 1st love is BTTA. 10min stops no prob n ran for 8-9 gallons easy
I've been looking at engines and came across "MANTRA" and "ROLLING" both look like they share the engine block of the mito , just wondering if they have that same stupid one off bearing as MITO, also the mantra is 4port, Rolling is 7port, I kno most think ports mean torque n power but I kno that's not true, cause o.s is 3 port n they are faster n torque' than anything on track, So who has run both , If it shares that bearing I'll stick with the good ole reliable BTTA. THANKS

Looking at Novarossi webpage, the Mantra and Rolling has regular bearings, though the Rolling has the offset carb like Mito and Vir-Tus.
Doing breakin on a Rolling now, but to early to say anything.

Ok cool. Let me kno what you think, when it's done

I’ve got about a gallon on my mantra....so far, it’s been great!! Super fast, and it’s not to the free point yet....still a little metal pinch when cold....I suspect it will fly by gallon two....and, the reason I bought it over nitro was the bearing is normal

How is the mantra compared to other novas you had in terms of power delivery and run time? Thanks

I probably don't do a full break-in, just enough so it can be driven on track without any problems.
Running 41001/9901 on it and 4x1.0mm with aluminium shoes and that's way to aggressive in buggy. 4x0.9mm with 2xcarbon and 2xaluminium will probably be better in the end. Strong but smooth bottom end, not to sure on the top end yet though.

Just finished the “majority” of the break in on my keep off 4 port. Running a 41001/9886, 2 aluminum 2 carbon with .9 carbon and 1.0 aluminum. I ran a quart through it gently and then started to run it on the track for another quart. Finally leaned on it a bit after running 1/2 a gallon through it. It’s still tight but starting to come alive and turning slightly quicker laps times than my b2102 on this track because it’s better suited for it. Run time looks like it’s going to be nice, motor is still snug and I was pulling in at 8:30 to refuel this afternoon. 6.0 Venturi leaves the top end a bit down from what I’m used to but delivery down low is so smooth and the track ain’t huge it’s not hurting me at all.

Very very happy with novarossi yet again. Every time I run one I wonder why I ever stray away to reds or os speed because the strong idle and power delivery just fits my driving. I always turn faster laps with a “slower” nova but always look around for something else too. Just part of the sickness I guess.

Most all my Nova engines have always lasted, and I've gotten 10 or more gallons through them when I was using the keep off and plus 4 type motors.

But my Mito engines haven't lasted. The bearings go quickly after about 4 or 5 gallons, especially for the ceramic bearings. Anyone else getting this type of life out of there Mitos?

Same here, BTTA was by far my most trusted engine ever, ran 10min stops n went 8-10 gallons , no pinch or rod........I didn't even get that out of my mito, It only lasted thru break-in and 1 race (about 1 gallon). N the bearing took a shit, haven't touched it since n refuse to run any engine with that bearing......��