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Location:
Brisbane
Registered:
July 2002
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Advancing Timing on 4AGE?
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Wed, 27 August 2003 22:48
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Just wondering how you raise the timing on a 4AG engine - the factory setting is 10 however my engine's been bumped up to 13 after drilling out some metal from the distributor to allow more rotation. This seems to be the most I get out of it ATM.
We've even swapped the gear clog in the distributor 180 degrees around however had to put it back the way it was given that it had too much advance and the engine wouldn't start then.
Does the 4AG ECU interfere with this and compensates for any adjustment? Does a wire need to be by-passed in order to get better timing?
I know of mates who have 18 to 20 for their timing and would like to bump mine up around that figure if possible.
Any suggestions / ideas are greatly appreciated.
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Location:
Perth WA
Registered:
May 2002
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Re: Advancing Timing on 4AGE?
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Thu, 28 August 2003 15:47
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DH,
If you have the proper AE86 4AG wiring loom for your car, then have a look for a small yellow 2 pin plug (might have a cover over it) dangling from the wiring harness that runs over from the wiper motor to the engine itself.
By shorting the 2 pins with the igntion off(loop a wire back into itself) then turning the ignition on, it should go into check mode on the ECU. To confirm this, have a look to see if the check engine light is flashing on the dash (provided you have one).
Start the motor up and set the rpm to about 650. Set the timing to 12-14 degrees BTDC.
Then when you have finished, turn the car off and disconnect the jumper wire across the yellow plug.
Go for a drive around the block, and listen for pinging. You should use only premium unleaded.
Any problems, call me.
Cheers.
Zack
0417 904 144
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Location:
Brisbane
Registered:
July 2002
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Re: Advancing Timing on 4AGE?
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Fri, 29 August 2003 14:40
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Cheers for that Zack ... I heard about it from a mate as well but didn't have time to ask him how to do it in detail.
Just to clarify (too dark to check now) but which yellow plug is it? Pic of the engine enclosed ... it's probably one of the 2 yellow plugs which have been cable tied together? I'll have a decent look tomorrow.
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Location:
Perth WA
Registered:
May 2002
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Re: Advancing Timing on 4AGE?
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Fri, 29 August 2003 16:04
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DH,
Its the smaller one.
Let me know how you go!
Cheers
Zacky
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Location:
NSW, East Coast
Registered:
July 2003
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Re: Advancing Timing on 4AGE?
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Sat, 30 August 2003 12:44
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I believe its the smaller one that has the brownish plug on the end.
Be sure to take off carefully, makes it kinda hard to put back on when its damaged.
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