New CNC Machined high flow throttle bodies. Easy 20-30hp.
Kabuki2
With all of this TB modification talk going on, I've decided to offer a
blueprinted, high precision CNC machined throttle body at a fair price without
the large waiting period.
The main focus we had when prototyping these throttle bodies was quality, as
with any other of our products. Several extra steps were taken to increase the
quality and airflow capabilities of the throttle body that you won't find
anywhere else without really paying for it.
Here's how it works;
We start with a stock throttle body and disassemble it.
Everything is then cleaned and prepped, and then the unit is placed in one of
our CNC controlled verticle machining centers (mill). The unit is then given a
large enough overbore to clean up the factory back bore and open the entire
throttle body to that diameter all the way through. This is one of the most
important steps in our TBs, as it completely removes the large "step" in the
throat of the throttle body that causes a big restriction. It also completely
corrects the factory's messy machine work. You won't get this from a throttle
body that uses the factory diameter bore. It does take extra time, it does cost
more, but rather than making this an option or upgrade, we included it in the
base price.
The next step is to machine a 7 degree taper to remove the factory's rough
casting job and blend to the throttle body's new intake diameter. This step
opens up the stacks on the top of the throttle body and smooths the transition
to the new, larger air intake bores.
Now that the bores of the throttle body are done, new throttle plates are
essential as the stock ones won't fit. Rather than using a cheap, stamped
aluminum throttle plate that would fit so-so in the bore, we created a special
fixture that holds the new throttle plates (constructed of 303 stainless
steel) in the machine at the position they would be at when the throttle is
closed. To understand what I'm saying, you would probably have to take a look
at one off the truck, but the plates sit at a slight angle when your foot is
off the gas, not flat. With the new SS plates held at this angle, they are then
milled to perfectly match the throttle body's new bore and sit at that perfect
angle. The stainless plates actually increase the strength of the shaft
assembly over using aluminum plates, and usually, angle milling the throttle
plates is overlooked by most hot rodders that would rather use already made
stamped aluminum pieces (much easier, more cost effective), but this is just
another one of the features you'll find in this unit.
The next step is to address the throttle shaft. The stock shaft is bulky, very
thick, and not the best design for a high flow application. There will be a new
stainless shaft option here that will cost slightly extra, but we do modify the
stock shafts as well for the budget minded. The stock shaft is counter bored &
tapped for socket flat head stainless steel screws. This means that the screws
are "sunk" into the shafts diameter and do not protrude into the throttle bore.
The shaft is then equally cut on both sides for a thinner cross section in the
bore. The result is even more air flow.
The bores and blades are then hand polished to a high luster and assembled, and
the screws in the shaft are tig welded in place for your engine's absolute
security. The stock shaft also receives a special coating to prevent the
corrosion on bare steel.
The results? Impressive. We're very confident with our throttle body
modifications that we'll back them with a satisfaction guarentee. I seriously
doubt this scenerio will ever pop up, but, if you are unhappy with the
performance increases as a result of these modifications, just return the unit
and you'll receive your money back... it's that easy.
Check out http://members.aol.com/rdperform/auto/tbimod.html for more info.
ttyl
Patrick