Tuned pipe setup

[Steve P]

I had a thought and I am sure it is not a good one. How will it effect a tuned pipe to put an S bent in the header to off set the exhaust to one side or the other. I know we use headers that bend on outboards and motors that have the exhaust to the front of the boat so what would the s bend do?

 

[mark voorhies]

I had a thought and I am sure it is not a good one. How will it effect a tuned pipe to put an S bent in the header to off set the exhaust to one side or the other. I know we use headers that bend on outboards and motors that have the exhaust to the front of the boat so what would the s bend do?

Just a guess, but the back wave from the pipe might not pack unspent fuel back into the cylinder right before TDC like with a

smooth curve or straight line header? Or at least, not be as effective.

 

[Steve P]

Mark

That was my thought too but I was just courious if the experts on here knew for sure or if anyone had ever tried it.

 

[tnrcboatracer]

The pressure waves will follow the curves, as long as they are smooth. But you need to consider the added C/L path length. Just look at the pipes the motor cycle, snow mobile, and PWC racers use. Jennings discusses this in his book.