Hi, i would like to subscribe to your newsletter, and i have a small
question, i am searching for a schedule how to hook up a Denso, and what
kind of coil do i need.
Norma Pothof
I don't follow you Norma.
What kind of Denso?
http://www.msdignition.com/
If it is an off the shelf MSD ignition system made in the states and you
want
to install it on an RX7 it depends on what year RX7 car you have.
Late years used computers and earlier cars used points
and a distributor. What year car do you have?
Paul Lamar
Hi Paul,
I drive a 1985 RX7 PP. I drag race with this car. The engine used to be in a
RX7, and I put it in a RX3, but it is a bit slow. I dont know what is wrong
.... it has 4 wires, red, white, black, white/green.... maybe you can help me.
Norma Pothof
Go to this web site and download the 1985 RX7 shop manual.
http://foxed.ca/rx7manual/85_manual.html
Download the 6.9 megabyte wiring diagram.
Here are four examples of what you will find in that pdf.
If you are using the 1985 RX7 stock Emissions Control Unit
and the stock intake manifold the lack of power is unlikely
to be anything to do with the ignition unless something has
failed.
One way of increasing the power is to modify
the air flow meter. You need to trick the emissions control
unit into thinking the engine is getting more air than
it really is so the EMC will increase the fuel and richen the
mixture. You do that by weakening the spring on the trap door
of the air flow meter. That is about all you can do with the
stock unit.
Are you running a carburetor?
If so that changes everything and it will be up to you to
get the ignition to work with the MSD. I can help you there.
In that case there is a lot you can do with the intake manifold
system to increase the power.
Is the engine a 12A or 13B?
Paul Lamar
It is a 13B, i attached some pics. Very kind of you that you want to help me
Norma Pothof
OK a Picture is worth a thousand words.
You are talking about the Crank Angle Sensor
or CAS for short.
I don't recognize the throttle body or carb. It looks like
some sort of Weber replacement. The Crank Angle Sensor
is familiar. Connecting that to the MSD ignition should
be no problem but you will wind up with fixed spark timing.
As a last check you need to take the top off the Crank Angle
Sensor and see what is inside. See if it looks like this?
Another thing we need to know is which MSD product do you
have. What is the MSD part number?
Also take a picture of the intake manifold and send it. If
the engine has not been ported internally it will not make a
lot of power no matter what you do. The good news is you
could p-port the engine and get up to 300 HP.
If you put a large turbo on the engine and run alcohol/NOS as
much as 900 HP is possible. A lot of drag racing RX3's here in the
states have around 900 HP for drag racing.
Paul Lamar
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