I'll make you you the same offer on the following parts which you need about as
much as the
TWM airbox:
Full race cam.
Maximally ported intake.
Chrome 4" inch exhaust tip
Solid core spark plug wires
50 mm solexes
Titanium valves w/8mm stems (those big ones are TOO restrictive for street use!)
Get my point? Actually Daniel I am not being sarcastic, I'm just thought I
would to help you avoid wasting a bunch of money. As nice as the offer is from
TWM, it simply doesn't mean much for street use.
Best case, after spending a small fortune in dynoing, you may add a few HP at
redline.
You see the first thing you are going to find is that at certain RPM's your
mixture and or timing
is less than optimal. This will hurt you much worse than the airbox will help.
Then you are going to need to work out a solution/compromise across the RPM
band. That will involve several runs, a bunch of jet swapping, and timing
light work (by the way you are on the clock...) maybe recurving (again) or
eliminating the distributor. Oh yes, Fuel delivery issues?
You have to do all this since it makes no sense to try to optimize an airbox on
a mis-tuned engine,
right?
Now you start swapping velocity stacks, boxes, and filters. Did any of this
change your mixture/timing requirements? Are you detonating at different
loads/throttle positions?
maybe. Go back to the above.
Get my point?
TWM makes nice stuff, but it isn't a magic bullet. If you are going to sqeeze
more HP out of
your Solex 2L, buy a jet assortment and a choke assortment and learn how to
tune the carbs carefully. You can pick up real power this way. The factory
air cleaner will work fine.
Jim
----------
From: Daniel Neuman[SMTP:dneuman@stars.sfsu.edu]
Sent: Thursday, December 09, 1999 11:58 AM
To: datsun-roadsters@autox.team.net
Subject: A nice offer from TWM induction
Hello All,
Have been communicating with TWM induction about the cold air box and
velocity stacks they make. TWM are the people that make fuel injection setup's
for Mikuni/Solex's. They have offered to 'loan' me a cold airbox and some
velocity stacks to see which combo works best on the roadster. I would have
to have the car dyno'd though to really see the difference. If I find a combo
that works well I buy it and return the rest and if I don't find a good combo
I return everything back to them with 'no charge'
I say 'no charge' cause I don't know what it will cost to have the
car dyno'd.. Actually I know nothing about haveing a car dyno'd... I would
probably need to do at least four runs. ONe with the stock setup and one
each for small medium and large velocity stacks. Does anyone know how much
this might cost me??
Does anyone know of a place in the bay area that does this kind of
thing??
Thanks,
DAniel 69 2000
SF CA
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