Kcazz

My buddy bought the hpi evo with the T3.0 hpi motor, we just parking lot bash i was wondering what engine would rip it..i was looking at the os .18tz but i heard you have to upgrade the whole drivetrain and it just chews gears.

warnked

some smaller engines rev faster than larger engines, plus the smaller engines (.12) weigh less. if you want to burnout into a doughnut get the .18 engine. If you want to go faster get a .12 that will provide 36,000 rpm or more . ( ive had the .12 JL reddot on my eye for my rs4)

JJBinks

The tz is more of an offroad motor in my opinion as it has gobs of torque that will tear apart some gears if your not careful. The post above is a good one. .12 motors have quite a bir higher RPM range (if you go with race motors) That also makes you eligible to race in clubs that have the sedan class, as the quidelines specify you must have a .12 engine. If that is of interest anyway.

Insanity

iTrader: (1)

The HPI EVO's have metal diff gears. The 18SS & EVO+ have the higher gear ratio better suited for topspeed.

The 18tz is spose to be a brutal little motor...especially modded. Ive also heard good things about the TRX 3.3 with the parts from RB Mods on it.

Since you just parking lot bash, you dont have to stick with the .12-.18's...if you dont want to. They accept .21's just fine...

I have a RS4 EVO+ with a modded Hyper 21 8port in it. I tested it once with the 47/43 spurs with 19/23 pinions just breaking in the motor and it was still a beast. Im waiting on 41/37 spurs to show up, and hoping to find some GPR 44mm rear foams for it soon.

The same motor in my firestorm has been 63mph turning 39000, so im hopin for at least 75-77 with the car, goal is 80..for now.

Insanity

iTrader: (1)

btw, i have nothing against the .12's ive just pretty much always run .21's in my 1/10 cars/trucks.

Kcazz

Alright thanks guys....for those .21 did the motor just mount in or didnt u have to re moint it and make new holes?

Insanity

iTrader: (1)

for the way i mounted mine, i had to do some grinding. You can use the mounts from a OFNA CD3 with minimal drilling.