RS4 rtr 3 Engine

[mr_bob]

Hey guys i was just wondering what youll's opinion is on a new engine.


I was thinking about getting a new one fore my rs4 3 but i dont know which ones will fit.

i want a motor that i dont have to do many mods to to make it fit and i also want to know if the hpi engine exchange is worth do or if its better to just buy a new engine off tower.

and which is the cheapest direct drop that will actually last me a while

oh i plan just to bash and mess around really maybe a little bit of racing here and there.



Thanks
Mr_bob

 

[AC48]

I though it was a direct drop in but I've heard a few things about it not fitting, the O.S. .18 CV-RX. If this is a direct drop in this is the engine for you. It has lots of power from what I hear and will last you a very long time, at least thats O.S.'s reputaion. And its only around 90-100 bucks on tower.

 

[petal2thametal]

get a good 12 engine for you rs4 they are faster then any 18's.
get the hpi pro xs12 engine or if ya wanna go really fast. get the sirio 12 evo 2

 

[rossb]

get a good 12 engine for you rs4 they are faster then any 18's.

I am going to find out if this is true pretty soon.

 

[AC48]

My speculation would be a .18 will give you better power off the line and a .12 would give you high speeds and great high end power.

Either a .18 or a .12 will be fine. Nice .12s usually cost a lot though.

 

[rossb]

It also very dependent on gearing. You can gear a high torque .18 very tall (numerically low) for very high top speeds and still maintain acceptable acceleration.

 

[AC48]

True, let us know what you find out. What engine are you getting?

 

[mr_bob]

well ill most likely be running stock gearing to start out with but might re gear after i get in broke in and everything and i dont have a 2 speed but ill look into the .18 it sounds nice and the price is about right.


so yeah anymore suggestions let me know

 

[RatzoRC]

I like the Sirio .12 outlaw for the money. Cost about $170.
I run one in my Kyosho V-one RR.

I have a Novarossi JP modified .12 going in my new Kyosho V-one RRR.
Thats a $$$ engine, and do NOT suggest it till you get a lot of tuning under your belt.

I guess it depends on your budget.
If you want to spend $100, go with what you can get.
If you can spend any amount, go with Novarossi or Collari.

 

[mr_bob]

well let say i want to spend under $100

would the .18 be an ok engine to put in it or would i have to do some mods to make it fit

it had a .15fe in it before so i dont know what changes besides the displacment

 

[AC48]

Pretty much any engine .18 or below should fit just fine. Also any engine you buy will be muuuuch better than the .15 FE.

 

[mr_bob]

yeah i know that so ill will more then likely get the .18 maybe the .12 if the price drops

i will get pics and give youll more info when i get it up and running i havent used this car in like a year or 2 cuz i blew the engine.

thanks to all for the help
Mr_bob

 

[AC48]

Are you a beginner? If you are I would suggest the .18 just because it will idle smoother, have a wider tuning range, a just be a easier engne for a biginner to deal with.

If you have experience with tuning engines a race .12 will be a great choice, they will be a faster engine.

 

[mr_bob]

.18

http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXGGP5&P=7


.12

http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXBZ15&P=7

well right now I'm thinking about getting one of these 2 engines

kinda leaning towards the .12 but not quite sure


and ac48 to answer your question I'm not a beginner but I'm not an expert I'm somewhere in between

i know i can tune an engine but i dont want to mess something up and waste money

but let me know which one youll think is a better engine

 

[rossb]

The .12 you linked to is a "CV" and not in the same class as the 18 "CV-R". The CV-R class is the race motors.

If you want an OS .12 you would be better off with this:

http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXXA44&P=ML

or this:

http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXXA45&P=7


If I was looking for a budget ROAR legal .12 I would be very tempted to try the PICCO ROAR .12

You can get it for $110 HERE.

 

[mr_bob]

I'm not looking for anything other then a basher maybe with a little bit of raceing and if i do race it will prolly be back street raceing i dont plan to do any roar racing



and I'm thinking about those two because of the price i dont want to spend over a hundered on the engine

 

[AC48]

Sounds like the O.S. .18 CV-RX is the engine for you.

http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXGGP7&P=ML

 

[rossb]

I agree.

 

[Tolip]

Out of curiosity, what makes the O.S. .18 CV-RX a better engine than the HPI 18SS or 12r?

I just bought a used HPI RS4 RTR3 and had plans to put in an 18ss.

Thanks

 

[rossb]

The OS will deliver about the same power and it is a lot cheaper. There was a recent dyno review in an RC Mag of the .18 motors and the OS actually put out the most power.