A few shots of my Cav 3 litreV6.
Main aim is to get it as fast as poss down the 1/4 mile.Currently at 14.4@98mph.
I want to keep it a standard looking as possible.
Already got a Scorpion stainless system all through with a decat, not sure what size it is?
The Probe secondaries are pretty good in that they are equal lengths front to rear banks, where as the std Cav V6 are unequal. Once the primaries are done i'll move on to these.
Once again possibly giving egg sucking lessons again but read somewhere manifold pipes should be 110% of cylinder capacity, hope this helps. Allows for best airflow and minimal pressure prior to cat.
Elwood Blues: "Our Lady of Blessed Acceleration, don't fail me now!"
Gaz loses sleep for my car and helps me with parts at ungodly hours of the day. Awesome
There is loads af science behind exhaust pipe design, size and lengths, you could spend ages working out what is best for any engine. I think these pipes are probably too short, an engineer at work reckons 600mm would be about right, failing that go for 300mm which these are.
The sizing is a compromise between being too big which will give you high flow, but low velocity and too small will be restrictive but high velocity. The port size on a V6 is roughly the same area as the 1 5/8 dia pipe in this system so that persuaded me it was about right.Looked at a load of stuff on yankee websites and they would tend to say 1 1/2 was right, but that looked too small to me.
Also much depends on packaging it all under the bonnet, 600mm pipes may be good,but they would end up being more expensive to make. I might look at this though once i've made this set.
However, I think that anything has got to be better than the standard manifold.