How I Timed My Rx7 The Way I Did
#24
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.
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.
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
#25
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
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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