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Timing question

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Offline Zuki-Girl

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Timing question
« on: September 11, 2010, 05:51:21 AM »
the Sidekick is a 95 4dr 5spd 2 wheel drive. the engine is out of a 94 unknown model. Do i use the timing info under the hood(5btdc) or use the 94's timing? ECM is the 95s.

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Offline Drone637

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Re: Timing question
« Reply #1 on: September 12, 2010, 12:19:14 AM »
You will use the timing from the 95.

I have a 96 and run mine a few degrees in advance of what the timing info under the hood recommends (5 degrees).  Otherwise the engine tends to have a bit of a flat spot when accelerating between 2K and 3K on the RPM range.  I believe Wildgoody actually runs his between 10-12 degree advanced, but I don't know if that is with the diagnostic bit set or just when the vehicle is at idle.
96 Geo Tracker, x-SJ-410,  x-White Rabbit, x-Project Trouble
Crawlers NorthWest
x-Trouble Racing

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Offline wildgoody

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Re: Timing question
« Reply #2 on: September 12, 2010, 08:19:37 AM »
That 10* was pre turbo, since then it has been timed by ear to reduce the pinging

Real Trucks Are Built, Not Bought,
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Offline Drone637

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Re: Timing question
« Reply #3 on: September 12, 2010, 12:59:54 PM »
Was that at idle or when you jumpered the computer into diagnostic mode?
96 Geo Tracker, x-SJ-410,  x-White Rabbit, x-Project Trouble
Crawlers NorthWest
x-Trouble Racing

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Online fordem

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Re: Timing question
« Reply #4 on: September 12, 2010, 01:00:46 PM »
You will use the timing from the 95.

I have a 96 and run mine a few degrees in advance of what the timing info under the hood recommends (5 degrees).  Otherwise the engine tends to have a bit of a flat spot when accelerating between 2K and 3K on the RPM range.  I believe Wildgoody actually runs his between 10-12 degree advanced, but I don't know if that is with the diagnostic bit set or just when the vehicle is at idle.

Depending on the quality (octane) of the fuel available and what you're willing to pay for, you can run as much as 20* advanced - although I would approach it the way wild has, advance it until it just starts to ping and then back it off until it just stops.  There is a corresponding increase in performance and throttle response as you increase the advance.
'98 SQ420 Grand Vitara
'05 JB420 Grand Vitara
'16 APK416 Vitara
'21 A6G415 Jimny

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Offline wildgoody

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Re: Timing question
« Reply #5 on: September 12, 2010, 04:46:07 PM »
That was without a jumper
Real Trucks Are Built, Not Bought,
And Chrome Don't Get Ya Home.  

An armed man is a citizen. An unarmed man is a subject.

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Offline Drone637

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Re: Timing question
« Reply #6 on: September 13, 2010, 01:22:26 AM »
Ok, so probably about a 2 degree advance over stock.  Thanks!

fordem:  Yea, but I don't trust my ears enough to do the timing that way. :P
96 Geo Tracker, x-SJ-410,  x-White Rabbit, x-Project Trouble
Crawlers NorthWest
x-Trouble Racing

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Online fordem

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Re: Timing question
« Reply #7 on: September 13, 2010, 07:46:17 AM »
If you don't trust your ears, the jumper it (which disables the ECU advance), set it to the FSM figures, and then remove the jumper.
'98 SQ420 Grand Vitara
'05 JB420 Grand Vitara
'16 APK416 Vitara
'21 A6G415 Jimny