Distributor or Not

[J-B Racing]

O.K. since I am new to S2. it is only 2 Months that I have this Motor. So my question is this::
What is the advantage of going to a Distributor over the Cam Sensor with a DIS-4 that I have right now?
I am only planning shifting around 7000 RPM. My current Ignition worked great on my 109 which I was shifting around 6800 without any issues.
What I have present is the Cam Sensor, and the DIS-4, no Balancer for Stock Ignition.
What I don`t have is a MSD to run a Distributor, and the Harness, but I have a ATI Balancer BBC style
that is NOT properly fixed on the Crank, and a Crank Trigger that I am not sure if it is any good.
So to run the Dist. I need to get the MSD 7AL, Harness, Machine the Damper / maybe the Crank which I do not want to touch ( $2600 Crank ), and have no idea how to Time this set up when I get around to it.
or
Just get a BHJ for stock Ignition and run the Stock set up.

Suggestions................please..
Thanks

 

[turbobitt]

O.K. since I am new to S2. it is only 2 Months that I have this Motor. So my question is this::
What is the advantage of going to a Distributor over the Cam Sensor with a DIS-4 that I have right now?
I am only planning shifting around 7000 RPM. My current Ignition worked great on my 109 which I was shifting around 6800 without any issues.
What I have present is the Cam Sensor, and the DIS-4, no Balancer for Stock Ignition.
What I don`t have is a MSD to run a Distributor, and the Harness, but I have a ATI Balancer BBC style
that is NOT properly fixed on the Crank, and a Crank Trigger that I am not sure if it is any good.
So to run the Dist. I need to get the MSD 7AL, Harness, Machine the Damper / maybe the Crank which I do not want to touch ( $2600 Crank ), and have no idea how to Time this set up when I get around to it.
or
Just get a BHJ for stock Ignition and run the Stock set up.

Suggestions................please..
Thanks

I can't say I have any experience with the distributer but I was able to make some good power with the stock factory ignition. Was good at 35# boost and 900+ WHP. If I had to upgrade to anything it would be coil on plug.
If money is a concern, try what you got first.
Allan G.

 

[J-B Racing]

I can't say I have any experience with the distributer but I was able to make some good power with the stock factory ignition. Was good at 35# boost and 900+ WHP. If I had to upgrade to anything it would be coil on plug.
If money is a concern, try what you got first.
Allan G.

Thanks Allan for your input. Eventually money becomes a concern when you trial and error is a factor. And I was leaning on start with what I have first. So you pushed my decission faster.

 

[steve hughes]

I switched back from a distributor to the DIS at the race track. Back to back passes running 9.40's. 0000000000000000000000000000 difference.

 

[J-B Racing]

I switched back from a distributor to the DIS at the race track. Back to back passes running 9.40's. 0000000000000000000000000000 difference.

Making it hard to decide now...Either way, I have to get a Balancer. I find that the ATI is not in all the way.
Thanks for posting replies. I can post pics of what the Balancer set up looks like and let me know how it looks!!

 

[J-B Racing]

Here are some pics..

 

[8 SEC 109]

We ran 8.20's years ago with the DIS 4 MSD ignition box without issues.

 

[J-B Racing]

We ran 8.20's years ago with the DIS 4 MSD ignition box without issues.

That said, I don not understand why people say they can go fast with it. One my 109 it work like a ROLEX, bringing my RPM to 7000 like a 2 stroke engine. Chit I think I will run it then...
Thanks

 

[sackracing]

Kent Rudbeck went 7's with a factory style ignition

 

[buickGTP]

I am running a 1987 BMS ignition it will rev easily to 9000 rpm with no problems the seat pressure on the
valves are 180 lbs with a Rev kit. I do not understand the advantages of a distributor.
Steve

 

[steve hughes]

Only advantage i see to a distributor is the 2 step built into aftermarket fuel management systems don't work well with the waste spark of a stock ignition system.

 

[J-B Racing]

Only advantage i see to a distributor is the 2 step built into aftermarket fuel management systems don't work well with the waste spark of a stock ignition system.

How did you figure that out? You mean the MSD DIS option switch Waste Spark working!!

 

[toofastforyou]

Joe, keep the factory ignition + the MSD DIS-4 that you already have and you should be fine. Also use your FAST XFI engine management system.:wink:

Good luck,

Claude. :smile:

 

[norbs]

How did you figure that out? You mean the MSD DIS option switch Waste Spark working!!

The rev limiter functions as Steve said will not work properly in the Fast , eventually leading to something breaking, because the DIS module gets out of sync somehow.