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Re: [T3] air intake for carbs


<x-charset iso-8859-1>Hey Brian-

> I have read Berg's notes on this, and he warns about it.  I don't
> autocross my car or any other type of racing, because there simply is
> not enough HP to make it fun.  But just for driving, I thought DCNF
> were a great setup.

I thought so, too.  Then I tried it.  I even got the "special" Berg needle
valves.  I won't be doing that again :-).

For example, I'd pull into a parking lot and then make a swift 90-180 degree
turn to pull into a space, all at perhaps 10mph or so (i.e. mildly swift for
a parking lot).  While making this turn, I'd throw in the clutch because I
was getting ready to stop.  By the time I went to turn off the engine, it'd
already stalled out :-).  Right-hand turns were bad, too... if taken even at
20-25mph, you had a big-time bog and or miss for a bit until you pulled out
from it.


> Would they be bad just for driving the normal highways?

Not if you're going straight, but cloverleafs will never be the same.


> Wouldn't they be better than the stupid 32PDSITs I have now?

They will give you more straight-line performance, yes.  However, if you're
anything like me, you'll be very frustrated with them because turns will be
no fun.


> I won't be using the DCNFs on the big engine (if I ever can get around
> to it financialy), I want fool proof injection!!

Oh, yah!  :-)


> I just want dual port heads and an improvement in drivability until I
> can build the other engine.  Maybe I just don't have the 32s setup
> right, but it just feels so sluggish!!

One idea I'd kicked around before: what if you took some manifolds (kinda
like stock FI ones, only bigger) and made them turn inward, just like stock
FI, but instead put on DCOE flanges and put a DCOE on each side?  Then, in
between them, make an airbox and duct the box to a filter in a cold place.
I wonder if it'd fit... or, flip the idea around: make the manifolds go
outward, mount the DCOE, then have the air come directly from the fender
ducting...

I know for pancake T4 applications you can shorten the hell out of IDF
manifolds and make them fit, but I dunno if this is possible with the T3.
The T4 has intake bore spacing almost identical to that of the IDF, but the
T3 doesn't, so really short manifolds for the T3 might be too funky to work
well.  <shrug>


> P.S.  A carb-sync clinic would be a good one for INVASION.

Aye, true!

Take care,
Shad Laws
LN Engineering - Aircooled Precision Performance
http://www.LNengineering.com

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