The V8 Owners Forum -

Hi guy's, I'm finally getting around to building my exhaust! Can anyone tell me the distance from the exhaust manifold the balance pipe should be.
Cheers paul

I have never seen a specific distance stated.

Chris.

In my mind the best location is as close as practicable to the collectors. No idea where that came from but its there so probably read it somewhere.
Near the collector also sounds quite logical to me.

Andrew

Where it fits and can get around sump, transmission, steering rack, suspension, cross members etc.

Ian

There are so many factors involved with this such as already stated. On most European cars there is not much option but to put it where it will fit.
I would say that an x piece is better than an H arrangement.

In theory it would be possible to calculate the position for best torque or power point but bench testing would probably be needed also.

I have heard somewhere ( which I'm not convinced about) that the x should be placed at the point down the system where paint on the system hasn't burnt off but that doesn't seem to be very theoretical.

Thanks guys for getting back to me.
I've heard the X pipe is the better route to take, I'll try and see if i can fit it in as far forward as poss.
Cheers
Paul

DEVONMAN wrote:I have heard somewhere ( which I'm not convinced about) that the x should be placed at the point down the system where paint on the system hasn't burnt off but that doesn't seem to be very theoretical.

That trick was told to me by an old tuner of 2-strokes. Paint the tail pipe and run the engine hard and the paint will blister badly to a point. Cut the pipe there and you have the optimum length for that system.

unstable load wrote:

DEVONMAN wrote:I have heard somewhere ( which I'm not convinced about) that the x should be placed at the point down the system where paint on the system hasn't burnt off but that doesn't seem to be very theoretical.

That trick was told to me by an old tuner of 2-strokes. Paint the tail pipe and run the engine hard and the paint will blister badly to a point. Cut the pipe there and you have the optimum length for that system.

Thanks for that.
I'm glad someone else has heard this theory.