Tom:
I don't have much expertise in this, but I have done a little studying (and
I did stay in a Holiday Inn Express last night).
Seems to me that trying to get maximum flow out of your carb inlet would not
be a very big priority, if you are throwing-away a significant part of that
flow out your wastegate. Why not run with an air cleaner-- dump a little
less out the wastegate-- and give your engine better protection?
As to where to put the inlet (especially if you agree that you should use an
air cleaner) I'd put the inlet in the highest-pressure area of the bike
(probably right in front of that W-I-D-E engine block). That should improve
the (dynamic) Cd some, as your engine sucks-in part of that high-pressure
"bubble".
Hate to disagree with Dick J. and Jon-- but my studies suggest that velocity
stacks are only relevant to the extent that they interact with the pulses
generated by the intake valves (yes? no?). If that is the case, I doubt
that these pulses will communicate to the stack through the compressor on
your turbocharger. When I was working w/ CART, I never saw any "bells" or
tuned lengths on those turbo inlets, and many of the cars didn't even use
scoops-- just a "hole".
As they say-- just my 2 cents worth.
Russ, #1226B
-----Original Message-----
From: owner-land-speed@autox.team.net
[mailto:owner-land-speed@autox.team.net]On Behalf Of Tom Neimeyer
Sent: Saturday, February 15, 2003 9:12 PM
To: Land Speed List
Subject: Motorcycle Carb Air Induction
List,
This is more of a Motorcycle type question but all opinions are welcome.
We are running a S&S carb on a turbo setup (Honda CBX). The first year we
ran a large air filter, the second year we ran a velocity stack. There were
too many other changes made to say one was better than the other. What
should work best? I am not worried about salt or other things getting into
the carb so I do not think the filter is necessary.
Some suggestions are:
build a scoop facing forward,
a scoop facing rearward,
a large air filter to grab "dead air"
What about you Harley guys, you mostly run S&Ss, what do you think?
Thanks in advance.
Regards, Tom
/// unsubscribe/change address requests to majordomo@autox.team.net or try
/// http://www.team.net/mailman/listinfo
/// Archives at http://www.team.net/archive/land-speed
/// what is needed. It isn't that difficult, folks.
|