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-   -   Setting base timing in a '99 (https://www.miataturbo.net/megasquirt-18/setting-base-timing-99-a-64409/)

MoonieGT 03-21-2012 10:30 AM

Setting base timing in a '99
 
Can someone explain the steps on how base timing is set on a '99 when installing MS?

thirdgen 03-21-2012 10:38 AM

If you bought a Reverant MS, then you most likely don't need to mess with it. Start the car and when it's idling, shoot the balancer with a timing light and compare it to the idle cells in your spark table.
The timing on a '99 is different than on a 97-older, simply because you can't physically move anything. The CAS on a 97-older is adjustable, where as the '99 crank trigger is in a fixed position.

shuiend 03-21-2012 10:52 AM


Originally Posted by thirdgen (Post 851261)
If you bought a Reverant MS, then you most likely don't need to mess with it. Start the car and when it's idling, shoot the balancer with a timing light and compare it to the idle cells in your spark table.
The timing on a '99 is different than on a 97-older, simply because you can't physically move anything. The CAS on a 97-older is adjustable, where as the '99 crank trigger is in a fixed position.

You still need to set up the trigger angle correctly on the NB's. Rough instructions are below.

1. Install the MS in the car.
2. Start the car.
3. Go to spark settings and set it to fixed 10 degrees.
4. Hook up timing light and check timing.
5. Adjust "trigger angle" until it makes the timing show up as 10 degrees on the engine timing marks.
6. Turn of static timing.
7. Profit!

MoonieGT 03-21-2012 10:56 AM

Perfect, just what I needed to know.

Braineack 03-21-2012 11:32 AM


Originally Posted by shuiend (Post 851278)
You still need to set up the trigger angle correctly on the NB's. Rough instructions are below.

Betcha if he bought a reverant unit he doesnt have to.

shuiend 03-21-2012 11:42 AM


Originally Posted by Braineack (Post 851320)
Betcha if he bought a reverant unit he doesnt have to.

Is the trigger angle the same on all nb's?

Reverant 03-21-2012 11:42 AM

It should already be within 1-2*, however it is always important to verify it, especially in boosted applications.

Reverant 03-21-2012 11:43 AM


Originally Posted by shuiend (Post 851329)
Is the trigger angle the same on all nb's?

Yes, within 1-2* as noted above.

MoonieGT 03-21-2012 11:43 AM

It is a Reverant unit. Can you explain what you mean Brain?

MoonieGT 03-21-2012 11:44 AM

NM, you all posted while I typed :)

Braineack 03-21-2012 11:50 AM


Originally Posted by shuiend (Post 851329)
Is the trigger angle the same on all nb's?


because of the design it's pretty damn close like reverant noted.

shuiend 03-21-2012 12:00 PM


Originally Posted by Reverant (Post 851331)
Yes, within 1-2* as noted above.

What have you found is the "correct" angle? I know on my car with MS3X I have my trigger angle set as +8.

Reverant 03-21-2012 12:04 PM

5* +/- 1*.

shuiend 03-21-2012 12:12 PM


Originally Posted by Reverant (Post 851357)
5* +/- 1*.

Interesting I will check my timing again when I get my car back up and running this weekend.

Braineack 03-21-2012 12:13 PM


Originally Posted by shuiend (Post 851352)
What have you found is the "correct" angle? I know on my car with MS3X I have my trigger angle set as +8.


this may be different due to your input method which isn't the same as the diypnp.

Reverant 03-21-2012 12:22 PM

This. If you are triggering off the falling edge rather than the high, you may be 1-2* off the number I quoted.


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