Our local hobby shop has these bearings in stock. I have already made my order for spares

hello
does anyone have any information on the engine above?
it has m-rossi engraved on the head and looks heavily modified inside.
crank is ported and has lead weights in it as well.

i wouldnt mind a part number for new piston/sleeve/rod that would be great

thank you

Hi guys,,

Can anyone please give me the exact specs of the Plus 12 3CT and the Plus 12 5CT for comparison??

If not willing to type it out,, please paste a link..

Thanks in advance..

only 2 more transfer ports then the 12-3CT.

It's not on the NOVAROSSI website because it's not race legal. (ifmar/femca/EFRA etc.)

http://www.novarossi.it/eng/motori/plus123t3ct.htm

But these engines are now replaced with latest Plus 12 3 SCT, which changes crank to 11.9mm OD...they do not show on the web page yet

The 5SCT doesn't appear either, bu t as said before it has 5 ports instead of 3, but are not legal for sanctioned races, unless in an open class.

AFM

Thanks for your replies fellas..

I meant to ask about specs like rpm, hp, and bore/stroke. Anyways I found what I was looking for..

Thanks anyways..

The HP quoted is way off the mark. The highest HP recorded for any .12 engine is 1.15 for the CRF wasp. I have no idea where they get a figure like 1.68HP.

why you think it's way off??
on the other hand you can think that the CRF underpowered.

NOVAROSSI power quotes come from benchruns with the best combination of header&pipe.
and we all know that makes a world of difference.
If somebody builds a engine bench to measure power with any factory support it will finacially impossible to test all the engines with their best set up combinations.

Although I am not that experienced and not qualified to answer, but I don't think a highly reputable brand such as Novarossi is going to publish a figure regarding their product which is incorrect.. Please excuse my humble opinion ..

Like Team Novarossi said, I'm positive that their engines have undertaken many test to prove their potential hp output. Besides, I really don't think the CRF has that much power to even come close to the Novas..

OSTZP Quoted Power Output = 1.35HP Actual measured =0.78

NSR12S3 Quod Power Output 1.52HP Actual measured = 0.85

Sirio EVOIII Quoted = 1.62 Actual measured = 0.9

These are figures from ACTUAL Dyno runs

The Murnan moded Sirio EVO III STI got 1.05HP

http://www.nitrodynesystems.com

Cheers

i wonder how palmaris PR12, OS Speed, 12-3CT Tuned got how much HP when dynoed.

here's youre answer why theres a difference in power output.
The difference in power output is ...as i see it: they don't have the latest&powerful exhaust systems.
NOVAROSSI/Sirio/OS/etc. has.

If you run a .21 (for instance a 35+) with a 2006 you get a resonable speed&power.
the 2006 is released somewhere around 2002 or so.
When you mound a 2052 pipe you get far more power from youre engine.
I don't have hard HP results...only laptime
If you get a lower laptime with a different pipe you have more power!

Palmaris PR 12 BM 1.00 Hp / 31.33 oz/in torque
OS Speed TZ 1.03 Hp / 31.48 oz/in torque

You can see the graphs at http://www.nitrodynesystems.com/

AFM

This is the real reason why manufacturers claimed Hp don't match real dyno tests...the most reliable source for real Hp comes from Nytrodyne Systems tests, because all engines are tested in equal enviroment conditions and using SAE correction factors, which gives us a real comparison table.

AFM

X-Dyno Horsepower vs. Claimed Horsepower

You may have noticed that X-Dyno power data doesn’t always match up with manufacturers’ claimed horsepower and torque figures. We attribute this discrepancy to the fact that many manufacturers publish theoretical horsepower and torque figures based on rough estimates rather than actual dyno data, or that a manufacturer’s data collection protocol doesn’t match our own. The X-Dyno calculates horsepower using known mathematical formulas and precise physical data measurement.Although the X-Dyno’s power numbers may not equal the numbers you’re accustomed to seeing, the figures we provide are accurate from engine to engine, and are directly comparable with power data from test to test.

The Murnan Modified Sirio Evo 3 was not an STI. It was an old Evo 3. It hit 1.10 HP on the dyno with 31.60 oztq. The Murnan Modified Novarossi LS3 2007 updated edition just hit 1.15 HP with 33.41 oz. tq. With a very linear powerband. The Murnan Modified +12-3SCT just hit on 1.07 HP with 31.19 oztq. Not as much power as the short stroke. Stay tuned we are still playing with different pipe combinations. These may not be the final #'s. Just a sneak peak.