I'am getting a new Rs4 3 type ss with a Nitro star 12r ss engine in it and was woundering if this is a good engine or should I upgrade. If so what is a good fast engine to use that will drop in. Thanks for some help. Greg

That is a great little engine and no need to upgrade or change until you've worn it out. [8D]

But you cant find parts for it anymore. It is a great engine. Its the same engine i got with my rs4 3 and MAN THAT THING SCREAMS!!!!!! Even tho its a .12 engine, it wouldnt hurt to change that gearing a bit so u can get more top speed ( Red clutch gears )

To bad i sold everything for my rs4 like a week ago.

The engine is made by nova "rossi" and it can take alot of abuse. just make sure you break it in correctly. i would let it burn the first tank before u start to give it some throttle for the break in process.

And if u need any advse on that engine just pm me for info. Now that i think about it. i musta had 5-6 gallons before the engine broke (i broke it by accident)[&o]

hey i also have a question about engines,would the traxxas 2.5r would fit right into the the hpi .12ss kit?

Nope. all traxxas engines use SG shafts and hpi rs4 engines use standard shafts

Okay thanks..

Hey southturn - If you're thinking of upgrading you might consider the O.S. .18 cv-r. Do a bit of searching on here and you will find a ton of posts for this question. Type "what engine for my RS4" in the search tab and you'll find a ton of threads with different options. The O.S. CV-R is a great upgrade as per many of the members on RCU so you cant go wrong there. Good luck with your search.