traxxas 3.3 nitro engine upgrades?

[1970stage1]

I'm at the point of trying out a new nitro
never messed with the traxxes

i know a tuned pipe can add low end grunt
what about a header? do they make heads as well?

 

[johnnydmd]

Tuned pipe and headers are huge improvements for that engine.

Cooling head change isn't going to get you anything other than looks generally.

Might consider updgrading the carb to an OS. Big tuning improvement to be had there.

 

[1970stage1]

what header and exhaust do you reccomend as well as which OS carb

 

[johnnydmd]

OS 11k for the carb.

For the header/pipe, try to find a THS combo. Probably eBay the best bet.

 

[1970stage1]

is the traxxas tuned pipe any good? does the tuned header do any?
i know that most two strokes need expansion chambers as back pressure
can you mix ths tuned header with a traxxas tuned pipe?
and I'm looking for good low end torque

 

[Chubaka]

They have high end and low end pipes. Below is the low end. The best way for power on a 3.3 is exhaust and carb upgrades.

https://m.traxxas.com/products/parts/5490

 

[Grizz03]

What are you using it in? Each pipe combination will have a different location for the outlet, pressure nipple, mounting location.

FWIW: The OS 11K carb has the ball end on the throttle slide lever. The OS11KR has a smooth throttle lever which is meant for the Revo

 

[tudordewolf]

A ceramic rear bearing can offer you some improved performance & increased durability. I vouch for the 11kcarb, too.

RCrenew offers porting & crank re-milling if you really want to get crazy with it, but by that point you might as well get an OS .21TM

 

[cbaker65]

A ceramic rear bearing can offer you some improved performance & increased durability. I vouch for the

RCrenew offers porting & crank re-milling if you really want to get crazy with it, but by that point you might as well get an OS .21TM

Lol..just cut through the SH!T an buy an OS!..

 

[easy rider]

OS 11k carb on a 3.3 here as well. It dramatically improved. I can’t recommend this enough. On certain cars the Traxxas carb does fine. On others it sucks. I think it has a lot to do with care and maintenance. However, at its best it cannot compete with a 3.3 motor and 11k carb combo. Night and day difference. Plus, it holds tune. No more chasing it.

I’m run a Traxxas header and pipe on it. It run very well until the motor just plumb wore out.

 

[Grizz03]

If you're running a Revo or Slayer the spring mounted header (part#5340X) is a great upgrade over the stock screw mounted one. I haven't broken a header since.

 

[cbaker65]

Here is a local friend of mines carb change vid if you want to see it ,it shows
a before & after change & run ,it is like night & day ,OS carb makes the 3.3 engine
sound & perform much healthier!..

 

[easy rider]

An OS 21 would definitely improve low end performance. My experience is novel at this point. But, so far it’s worth every penny I paid for it. If it continues like this, it’s going to be a great motor.

But, I don’t know if it’s worth it on performance measures. I’m pretty certain the 3.3 with an os11k carb will be faster on top end. At least mine has been. And, that was on a worn engine. And, the 3.3 with an os carb is its own beast. It’s a strong engine for traxxas monster trucks. It’s a fast ride man.

 

[ReeV0]

I heard the TRX 3.3 bearings go bad pretty quick, I've just finished the break-in and bought some replacement Boca bearings, these ones - https://www.bocabearings.com/products/enk-164c-lp-9753

They've just arrived but the rear bearing isn't sealed, as the picture and description lead me to believe. The stock bearing is sealed. Do you think this will be an issue?

 

[Littlemotor]

I heard the TRX 3.3 bearings go bad pretty quick, I've just finished the break-in and bought some replacement Boca bearings, these ones - https://www.bocabearings.com/products/enk-164c-lp-9753

They've just arrived but the rear bearing isn't sealed, as the picture and description lead me to believe. The stock bearing is sealed. Do you think this will be an issue?

This thread hasn’t been active in two years buddy… Best to make a new one yourself.