Originally Posted by
zixxer
my last club race ...with the tuned grp ////i was starting up at the table after pre heating with heat gun ...a buddy came over and said ...man you need to idle that thing up ....i said give it time man ...see what happens on the track ....they are cold natured and take a good 3 minutes of run before a heat to get to operating temprature .....after the 5 minute heat with 3 minute warm up ...it came off at 195 and was not lacking in any way ...give these motors time to warm up and get going and they are golden
dont over react when you first fire them up ....after the 15 minute main ...i got 2nd place ...it was 195 and again had enough power pulling my x2 to clear jumps and scramble down a long back straight ....
i damaged my grp because i wasnt heatin it up, idk how many gallons i lost but i have about just over a gallon and it feels like i have 3 gallons on it pinch wise. thats the only bad thing about a starter box that will start anything
. i love this motor, my dad got one and he HATES it but he has like 10 tanks total, MAYBE little more. it doesnt have the power he wants but i told him to get it over a gallon and he will love it.
Originally Posted by
Frank L
My experience is yes cold blooded, use a heat gun to warm the block and head temp to 180 or above when starting, this helps. I have also had problems with the o-rings on the idle, LSN, & HSN getting old and not holding the position. Easy fix is to replace the o-rings. I even had one GRP that was giving an inconsistent tune where fuel was pooling up and out the HSN without the needle moving, replaced the o-rings and problem was solved. In my opinion I always warm the engine up for 3-5 mins before my heat/ main, it just runs better that way. So yes cold blooded but worth the trouble once its hot and tuned its on fire.
mine comes off anout 180-190 every time and there are so many times where im on my first lap for warm up or just sittin in the pit and i have guys telling me to lean it out and all i say is its fine just wait. then in the race after the motors warmed up i pass them on the straight