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I know I'm d---- well not taking them
off at this point - even if they cost HP {:>). Notice Tracy says
"IF" there is no significant difference in power then blah blah".
Well, I don't have any better comparison, I changed from my first 86 NA with a
poor induction design to the turbo block with a different intake - so apples and
oranges. However, you'll not convince me a device (the splitter)
that perturbs the exhaust gas sufficiently to knock 8 DB off of a
powerful exhaust spectrum is not taking away some power by restricting the
exhaust outlet. Also, if the splitters don't restrict the flow and
therefore power, why are there so many racers who have the exhaust ported to
increase the area? Seems like if it did no good removing material and
restrictions that they wouldn't be doing it. But, then not being a racers
what do I know about it.
But, like you said, short of a side by side
comparison with NA and Turbo Housings on a Dyno don't know how we would really
tell.
Looks like tomorrow is "go for Launch"
Ed A
----- Original Message -----
Sent: Saturday, April 30, 2005 8:32
PM
Subject: [FlyRotary] Re: NA vs Turbo Re:
Ed's new rotor housings
I couldn't remember what
the decision was on these splitters, so I did some research, and pasted the
quotes I found below. Unfortunately, I still don't know the answer.
Lynn, Leon, what say you?
Rusty (shopping for sandbags)
The following quote is from Tracy's squawk_muffler page, and
would tend to suggest that there isn't much HP to be gained with the turbo
housings, though he isn't making a definitive statement to that
effect.
| March 3, 2001
Mufflers.. the Saga Continues |
| ... Now the question is, If all
other things are equal, is there any significant power difference
between the turbo and non turbo rotor housings? Ever done an A/B
comparison on this? I did have a small increase in power when I
changed to turbo housings but that was comparing an old junkyard
dog engine with lower compression rotors to a freshly blue printed
engine with high compression rotors. If it turns out that
there is no significant difference in power, we've been going down
the wrong path with the turbo housings. And here I am with a brand
new 20B with turbo
housings.......... |
The following quote is
from the archives, about 6 weeks later. This would suggest (second
hand) that Bruce thinks there is significant HP to be gained by using the
turbo housings.
Date
Wed, 18 Apr 2001 103007 -0700
From "Mike Wills"
<willsm@spawar.navy.mil>
Subject Re Engine Selection for
13B
Bob,
I discussed this with Bruce Turrentine who is
currently assembling an NA
engine for me. It just so happened that Tracy
mentioned his conclusions
about using the splitter equipped housings when
Bruce was buying the parts
to build my engine.
Bruce told me the
NA housings would likely cost as much as 15-20HP. After
discussing the
options with him I decided to go ahead with the turbo
housings.
(the rest snipped)
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