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Originally Posted by gtfpv
i know bluepower racing recommend and have proven on the trck that a diffilipo full system is the go for best times .
why ?
tri y's are said to improve mid range torque over 4 into 1's.
on a standard car . which is better for acceleration and presumably quicker times ??
and does it change once the car is edited?? cheers .
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Firstly everyone, sorry about the late reply's, but bear with me, i will get to everyone.
The 1/78 difilippo is not a trick - just smart engineering. Modern engine building theory tells us to use the smallest primary to do the job, build up airspeed and increase scavenging.
So why go the 1 7/8??
Modern theory does go out the window when you have a unique, somewhat hybrid engine in a very narrow engine bay. The airspeed lost by going to a larger pipe is more than made up for by the larger cross sectional area at the head flange. If we were talking hot rods, where you could run a pipe straight off the head a few inches before it turns, you would be more confident with the smaller primary. However, the BA is very limited in its space, and loves the 1 7/8 pipe.
We notice that we run faster down the quarter than our closest rival in ET and MPH, and we run a 4:1 and they i believe are using a try y.
Thats good enough for me.
Editing the cars will make improvements over each mod, so it is recommended that a competent tuner aid you in editing each and every step of the way, to maximise efficiency.