Speaking of remote IAC

[David Cooley]

At 10:12 AM 12/20/1999 -0500, you wrote:


>As some of you know, I have been building a custom FI manifold for my 67 
>383 bb
>dodge coronet.  One of the things I did was cut off the IAC motor off the side
>of a 3.1-L  sfi chevy v-6 with a horozontal badsaw.  Then milled the sides
>square, welded plates over the holes, drilled and tapped for 3/8"  hose barbs.
>I will be using a modified carb bsaeplate for my Throttle body.  My concern is
>over the IAC ability to feed the necessary cfm at idle and high idle 
>during cold
>start.  I plan on adjusting the throttle blades to compensate for most of the
>warm idle rpm, but still don't know if the IAC motor openings will allow 
>for any
>significant idle increase.  I am using an ACCEL DFI unit, and can play the 
>fuel
>enrichment game to keep the car running at low cold idles, but I would really
>like to see 1500 rpm when the coolant temps are below 50 F.  The warmed up
>engine will idle at around 700-850 rpm.  Will the IAC allow me to go from 
>700 to
>1500?  has anyone messed with this?  Thanks.


The IAC for a similar sized engine will allow the rpm's to go probably to 
2000 or so if necessary, but why do you want a 1500 RPM cold idle?  With 
proper idle enrichment etc, an idle of 1100-1200 tops should be plenty... 
At 1500, you will be stressing drivetrain components when you put it into 
gear, and unduly wearing the engine from cold start oil starvation.

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David Cooley N5XMT Internet: N5XMT at bellsouth.net
Packet: N5XMT at KQ4LO.#INT.NC.USA.NA T.A.P.R. Member #7068
We are Borg... Prepare to be assimilated!
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