1st Generation Specific 1979-1985 Discussion

How I Timed My Rx7 The Way I Did

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Old 03-02-2003, 08:09 PM
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Mike's right.

we Hijacked louis' thread on his clutch about timing and ran with it.



If you look at your rotor, you'll see that there are two paths for the spark to

follow.
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Old 03-02-2003, 08:10 PM
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Here is a diagram of rotor #1 firing
Attached Thumbnails How I Timed My Rx7 The Way I Did-dist_cap_f1.jpg  
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Old 03-02-2003, 08:11 PM
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Then #2...
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Old 04-07-2003, 11:24 PM
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Originally Posted by Smog Fighter' date='Feb 2 2003, 11:23 AM
Ok,



First, to RacerX, sorry for mucking up your thead on clutch problems with

timing questions.



Now for the info.



This is for setting the TOTAL advance @4000+RPM (NOT idle)



Tools used: 1/4" drive ratchet with 12" extension and a 10MM socket.

(my weapon of choice for loosening and tightening the distributer bolt)



#2 phillips screwdriver with a 14" long shaft

(weapon of choice for loosening and tightening trailing advance screws)

(you can't bash your knuckles if your knuckles aren't near anything)



Inductive timing light with advance

(it's too much work for me to measure out all the degrees onto a

piece of tape then align the zero's then apply the tape to the pulley

then file marks representing the degrees hoping I don't screw up the

pulley)



My favorite throttle stick

(a friend will work just as well)



A word of caution: (To keep people from trying to sue me for them not being able to

follow directions!)

THE WANKLE MOTOR ACTS LIKE A 2 STROKE MOTOR AS FAR AS IGNITION!

Meaning that evry time the 0 mark on the pulley comes up to the pointer, the

ignition fires.

So if your timing light DOESN'T have a 2 stroke option, then the setting values are

cut in half.



We will assume that you are using a light without the 2 stroke option.

For more info on how a distributer works, YAW POWER has an excellent article here:



http://personal.riverusers.com/~yawpower/pultime.html



Read it now!



I hope that site never goes away



Now that all that B.S. is out of the way, we can start and warm up our engines.



Read the above article for recommended total advance.



Install timing light per Mfgr's instructions.

(#1 leading plug)

Set advance dial to 1/2 desired advance.

Have trusted assistant hold rpm @ 4000.

Check the timing against your 0 mark on pulley, it shouldn't be very far off.

Loosen distributer and turn to align 0 mark and pointer.

Tighten distributer.



You've just set the leading timing! Congratulations!



Give trusted helpers foot a rest while you move timing light to #1 trailing plug wire

per Mfgr's instructions.



Re-adjust advance dial to 1/2 your trailing spec.

Have trusted assistant hold rpm @ 4000.

Check the timing against your 0 (yes 0!) mark.

Loosen the two set screws for the trailing advance vacuum pod.

pull out on the vacuum pod to advance.

Tighten screws.

Re-check timing against 0 (yes 0!) mark.

Re-adjust as necessary to get it aligned.

Be patient.

Try again.



There you go, you've just set your trailing advance!



You will hear a difference when you set the trailing advance.



Tell trusted assistant to "beat it" and remove timing light.

Go for a ride!



Enjoy.



After I set my timing I rechecked my Idle settings.

I found that I am 2` advanced leading and 6`retarded trailing.

Your results may vary based on the operation of the mechanical

and vacuum advance systems in your distributer.
OK, I am a dumbass , when I wrote this I didn't verify the 4 cycle part of this.



I just went out tonight 7-APR-03 and verified my settings with my timing light (it

has a 2/4 cycle switch).



The 4 cycle setting is double (X2) the 2 cycle setting!



My profuse apologies to all who read this earlier and set thier timing to 1/4th

of where they wanted it.



I hope I don't get too badly for this



Raul
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Old 04-11-2003, 09:34 PM
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Hey, guess what????



For DLIDFS ignition, you need to multiply your timing setting x4.



Which means, for you to set your timing to, say, 20*, You would then multiply x4

and set your gun to 80* advance @4000 rpm.



I hope this isn't too cornfusing



Raul
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Old 04-12-2003, 09:05 AM
  #26  
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Hey Raul;

Nothing you say is to confusing. But you sure are into these wonderfull but time consuming machines!!!!

steve
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