drill out tuned pipe?

[motorcycleman1]

I'm running a tuned pipe if i drill out hole bigger will it give me more power ? i am sure it will be louder. i drilled out my revo 3.3 a while back and can't really tell if its faster i dont want to make it slower

 

[chickenman242]

from what I have read its meat to but I'm yet to notice any real improvments
what pipe ya running?? if you have the stock plastic tuned pipe id suggest a resonator from one of those ebay chop shops
or save the hassle and get a ths system or go all out and get an ercm pipe and never look back

 

[motorcycleman1]

tmaxx and revo both have tuned resonators dont get me wrong i drilled the pipe on the revo 3.3 it is a screamin demon. and the big chrome resonator on the tmaxx has a thicker wall on the pipe and i could drill it alot so i thought i would ask i would hate to slow it down.. for a 2.5r its pretty strong. i just wonder if its better why didnt traxxas do it ?

 

[Zdragon71]

I've drilled out a couple of traxxas stingers before and had a noticeable difference in performance. I had to drill the polished pipe out on my tmaxx with the picco on it so it would relieve some of the back pressure and it helped a good bit but i eventually just went with a bb ths manifold and pipe and that fixed my carb slide leak from too much back pressure.

 

[motorcycleman1]

so if I'm going to upgrade the engine i would need to drill it out anyway ill go ahead and drill it thanks for the help

 

[Zdragon71]

Depends on the engine. If you go with a picco .26 they run best with a bb system. The stock small block pipe will cause it to leak fuel around the carb slide due to the back pressure.

 

[Childresshunt]

and after a while the front bearing will also likely be leaking

 

[moe7404]

i had a stock 3.3 with a stock pipe .198" dia inside. i opened it to .218" dia. seamed to run better. but dont drill in one step, use 2-3 steps to get to the big dia. i would not want to go any bigger, cause the O.D. is .313" that only gives the wall dia of.050"

 

[motorcycleman1]

i was hoping after the cost of the engine that i could run the pipe i have for a little while until i can come up with cash for a better one . can i do that? i have that big chrome traxxas resonator i have a stock revo 3.3 if i run it on the work bench with no air filter it spits a little fuel out so dose that mean too much back pressure or is that normal

---------- Post added at 10:50 PM ---------- Previous post was at 10:43 PM ----------

what are the signs of the front bearing leaking or for that matter the carb leaking

 

[moe7404]

generally most engines have some reversion that could spit some fuel out the intake. a small amount may not mean anything.. i friend of mine had a road racer with a chevy 427 with injectors. when he went 100 MPH down the straight you could see a mist of fuel at half the length of the injector stack, above each injector stack. REVERSION. but on R/C engines iam not real good on. but i know my friends here are.

 

[motorcycleman1]

makes since just wondering thanks