Bolt on Throttlebody suggestions

[Ron Schroeder]

Hi Alan,

Fancy meeting you here ;)   For my first EFI on the Pinz, I just used the
Zenith carbs with the idle cut-off solenoids unenergized and the accel.
pumps disabled as throttle bodies.  I mounted the injectors (Bosch, about
19lb/hr) to bosses that I welded to the runners on the stock manifolds.  I
am using a home brew ECU that at least works better than carbs but I want
to go with a re-maped 727.  

I didn't want to use 2 TBI's due to the sequential pair firing order 
(1-2-4-3) of the engine.

Why do you want to use a mechanical injection on the Pinz?  If it is the
same one that I had on one of my old SAABs, you will have a tough time
tuning it through the whole load range on the Pinz and it is sensitive to
bumps.

Do you really think that it needs to be richer than 14.7 of just make sure
it never goes lean?

Ron



At 12:39 AM 9/23/01 -0400, you wrote:
>Hello all,
>
>Despite me earlier query on mounting Kjetronic injectors, I am also looking
>for for small and inexpensive TBI bodies for my project. Currently it uses
>dual 36mm 2bbl Zenith 36NDIX carbs. It also could utilize a Weber DCNF.
>(both are 52x85mm rectangular flange)
>
>I have found TWM and Jenvey bodies that would probably work, but at $400 or
>so a piece, they are out of reach. I'd need two, and add injectors and an
>ECU, etc, and I'm about 3x overbudget.
>
>The typical GM throttle bodies are too big for dual use, and would be too
>cumbersome to try to create the manifold for the inline 4. (IE: The typical
>holley flange is too wide)
>
>Ideally I would like to find a rectangular flange TBI body from a 1.2-1.4l
>engine. Most I have seen are either mechanical or jump straight to port EFI.
>(The europeans seemed to skip TBI, unlike the US cars, as far as I can tell)
>
>All suggestions would be welcome.
>
>Thanks,
>
>Alan Barrow
>
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Ron Schroeder
WD8CDH
E. E. S.
wd8cdh at bnl.gov
rjs at bnl.gov
ron at 112motors.com
631 344-4561 Day
631 286-5677 Nite
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