- The Response -
If you're wanting overall power, stay put with the
186. Your transfers, I imagine just thinking about it,
should be somewhere in the 126-129 range to match up with
the exhaust - but that is only a very basic answer. I
would calculate further to obtain exacts. I had the LRD
pipe and HATED it. I went through all sorts of pipes, and
eventually ended up with a Whale pipe, just before I was
going to have a custom-built one. I love this pipe. But,
my motor happened to be ported in such a way that this
pipe really complimented it well. Could be very different
in your case. From what I have seen & heard on the
FTZ pipe, it is identical to the Whale.
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- Trax310
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- Me too. I have had a shelf full of (almost) useless
pipes, or pipes that were completely wrong for the kind
of porting my motor had. It's too broad a statement to
say that a pipe is High Output or Torque, or Mid Range.
What the manufacturers of the pipes need to do is to
start publishing precise data about their products. In
the four stroke automobile world, cam manufacturers
publish information about the lift and duration,
operating range, maximum RPM and sometimes even much more
specific information.
- This aids greatly in cam selection.
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- Differences in the available 2 stroke pipes could be
compared more easily if this kind of information was
available. I dare any manufacturer to publish the design
specification of their pipe along with the advantages and
disadvantages of its use. Include the most amount of
information possible, and let the user make the choice
from that. Additionally I'd like to see 2 stroke porting
shops tell up front what specs they'll be cutting their
customers motors ports to.
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- Its not hard to find out these things if you really
want to know though. Many racers and enthusiasts who need
to have as much information as possible at all times have
taken a few pictures of various quads or bikes with their
pipes attached to be used to reverse engineer the
product. Since we know the overall dimensions of a given
quad, we can scale our drawings from them with extreme
accuracy. Angles of divergence/convergence are constants
- the wonderful thing about pictures.
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- Open up a road race magazine and look at the pictures
of pipes attached to a 250cc racer. The way they hang
there its very easy to scale them and find out a whole
lot of information about them. It's also very easy to
find out other specifics about those bikes this way. The
wheel sizes, tire aspect ratios, steering head angles,
even spring rates and many, many other interesting
factors which make these 2 stroke masterpieces the most
powerful (per liter) naturally aspirated gas burning
engines in the world. A hundred HP from a 250cc motor
translates into 400 HP per liter - OUCH - that's gotta
hurt those 4 stroke techies...
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- Rick
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