Paul what would happen if I used round aluminum spheres like these
> as knuckles to get my intake runners closer to the engine. My intake
> manifold is the Racing Beat 6 port manifold it's a little on the high
> side I think I may not have to much of a problem as I'm building a
> Long Ez and I think I'll have room if i need to make the runners a
> little higher.
>
> Anytime you force the air to make a sharp right angle you loose
> big time. Are you using the Weber carb it is designed for or
> EFI? If EFI I would lengthen it and go straight up through the
> cowl with a ram air scoop on top like most race cars use.
> That manifold is designed for 9 or 10 thousand RPM.
> --
> Paul Lamar ...No rotor no motor.
> paul
>
> Thanks for the rendering I've always wanted one of those.
> Did you use Rhino? If so could you send me the file? Also,
> what are the dimensions of that formula one style intake.
> I would like to make a couple. I have some pretty good ideas.
> I think I can turn the blank on my Lathe, and then lay up some
> glass over it.
>
> Tony
>
> If you can stand the ugly factor make the runners 24 to 28 inches
> from side port to trumpet mouth :) The butterfly throttle can be in
> the air scoop cum plenum. The opening should be about 3 inches
> in diameter. The native Rhino file is too big to email.
>
> Paul Lamar ...No rotor no motor.
Well that's just it. I really don't want ugly per say. I like the
function aspect of it no doubt, but your right it is ugly. there
must be a better way to skin this cat to get the same results.
How much BHP will I see in this configuration as opposed to say
something like mistrals intake? What I'm trying to get at is, to
have form and function. How much HP will I loose from the form
aspect of the intake? Lets say for argument sake that in this
configuration I get 190hp but if I go over the top, or make a
SLIGHT bend in the intake to keep it below the cowling I may
only get 180hp, which would be o.k. for a long EZ. I think ; ) .
do I have to have the runners that length what happens if I cut
3 or 4 in off? where is the runner length on these renderings?
Tony
----------------------------------------------------------
The 24 to 28 inch runner length is center line of the pipe
from the side port to the trumpet.
Give me some dimensions. Straight up from the front and rear
RB intake manifold flange to the cowl surface. And straight up from
the top of each rotor housing to the cowl surface.
Then place a long carpenters level on the RB intake manifold flange
and see if it clears the top of the rotor housing. If so give me
the dimension from the bottom of the level to the top of the
rotor housing.
You won't get as much power at 6500 RPM as the Mistral manifold has
been carefully developed on the dyno for peak power at 6500 RPM
or so. My guess is you will get somewhere between 175 and 185 HP
at around 6500 RPM. Maybe Jim Medere can tell us what the
stock Weber gives at 6500 RPM with the stock 6 port man length.
Are you street porting your six port? Are you using the 2.85:1
gear or the 2.17:1 gear? If the 2.85:1 gear you can go up to
7500 RPM use shorter runners and get more HP.
Paul
I don't have any dimensions available from the flange to the top of
the cowling as i'm not that far into my build. I didn't plan on using
the stock cowlings anyway, I was just simply going to make my own so
I can toy around wiht the dimensions. Maybe you can just figure it on
the stock cowling as a starting point. I'm not street porting my
engine, I do have brand new turbo housing on it though but I'm
keeping it N/A for weight and simplicity. I plan on using the 2.85:1
redrive. I would like as much power out of this thing as possible.
What I'm looking for mostly is reliability, if I have to sacrifice
some hP for a simpler fuel system that's O.K. also from the top of
the RB manifold flange to the top of the rotor housing is from what
I can tell about 1/2in maybe a little less. If I lay the level on
the flange the bottom of the level touches the top of the rotor
housing however it's way off level bubble the flange has a slight
slope to it. If I level the bubble I get just about a 1/2in does
that make sense? you can clearly see the slope in the flange at
level bubble.
Tony
Well that is something to go on.
I will see what I can do with the 90 degree bends.
OK This requires two 90 degree two inch tubing bends
on a three inch center line radius. Based on an overall
lenght of five inches for your ebay throttle body this
gives about a twenty inch runner length which is about right
for 7500 RPM take off.
Paul Lamar ...No rotor no motor.
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