[urq] Sensor Pins for camshaft triggered ignition

[Ben Swann]

The crank method would require extra code or circuitry to account that there
are two crank revolutions for every one cam revolution.  It boils down to
simplicity.  The Pins can be set to trigger injectors just as the valve is
opening, or similarly set to trigger the ignition at the appropriate time as
does a distributor.

 

I am using an early version of 034EFI which triggered the injectors this way.
At later time I may implement MegaSquirt, 034 or VEMS using standalone Engine
Management and Coil on plug.  The later EFI systems using speed density do not
need a cam trigger and the sprocket can then be used for ignition.

 

The engine is an align-bored MC-1 with balanced rods and pistons. The head is
slightly reworked NF with larger valves.  The ignition portion of the MAC-14
with GTQ chip and dual knock sensors will be used and loosely coupled to the
EFI system.  The engine will be mated to late 5000 tq transmission and
installed into my '83 Ur Quattro "Inga" :
http://www.gtquattro.com/UrQInga.html   

 

Not getting into many details here, but will post them on my website when the
installation is complete - hopefully by end of January.

 

Cheers!

 

Ben

 

[Date: Mon, 8 Jan 2007 20:50:00 -0500

From: "Christopher Leal" <cleal at cittio.com>

Subject: Re: [s-cars] Sensor Pins for camshaft triggered ignition

To: <quattro at audifans.com>, <s-car-list at audifans.com>,benswann at comcast.net>

Message-ID: <868BCE5A6576F44A862F1FBBC3E14A0102BDF7E7 at ms17.mse9.exchange.ms>

 

Ben,

 

Why wouldn't you want to take this from the crank instead of the cams?

Distributor driven off of cams? Tell us more about your project-What are you
trying to do? 

What ignition are you using? 

 

Christopher]