Message
I have the same but haven't removed the deflector
out of the exhaust port yet. Any idea on the difference with or without?
Hi
Georges,
This is
another one of those eternal debates on the list. I think the
consensus is that they must cost some power, but maybe not even enough
to notice. They are said to make a noticeable difference in exhaust
noise though, which is a good thing. So far, I've only used the turbo
housings, which don't have the splitter.
I sure
wish I had a big Lottery check, so I could install a dyno, and spend
enough time playing with these things to figure it all out. Short of
being able to do that, all we can do is collect any info we can from
the sources we have. Unfortunately, this data rarely compares directly
with what we need, and by the time we try to mentally convert the
conditions of the test, the results are skeptical at best.
One
example of this is Lynn's numbers for ported and PP engines. While I
really do appreciate the data, it wasn't quite the gold mine of info I
was hoping for. There are just too many variables, such as
racing choke limitations, which I can't account for. I'm afraid I
still don't know what the real difference between a side and peripheral
port engine would be.
I have to admit that I'm
starting to give some thought to building a test stand, and having some
way to measure power. Perhaps just a good mixture monitor, a big
variable pitch IVO prop, and reliable fuel flow measurement. Short of
having a real dyno, I'm not sure what else I could do.
Cheers,
Rusty (buying more lotto
tickets)