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Base timing adjustment (EL) 

 

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Posted: Thu Nov 25, 2004 1:58 pm 
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Also, is it true that the EEC-V develops its maps over time, so one dud tank of fuel can screw you for weeks?

If so, probably a good plan to scrub the memory every month or so....
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Posted: Thu Nov 25, 2004 4:15 pm 
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I dont think scrubbing the memory would give any benifit over the effects of some bad fuel. I also find my transmission runs very s**t when the ecu has been wiped so I think its something to avoid.

 

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Posted: Thu Nov 25, 2004 4:19 pm 
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So is playing with the crank angle sensor a viable option for changing EF base timing?

 

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Posted: Sat Nov 27, 2004 1:31 am 
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Bozz wrote:
Just mucking around with my EL Fairmont boat, whacked a timing light on it and put it into diag mode.

First thing I noticed is there is only one mark on the harmonic balancer and only one point on the engine to mark where its meant to be.... how the fudge do you accurately set the timing damnit.... The mark visually was about 10 degrees left of the pointer which would indicate a fairly accurate setting.

So I adjusted it to about 15 deg btdc and all of a sudden the engine decided to make about 20-30rwkw more on LPG...... Can't argue with that :)

Put it back to petrol and it pings its tits off, will try Synnergy 8000 tomorrow and give feedback. Fat lot of good the knock sensor does....

There is a unit you can buy that changes your timing to a preset degree to use with petrol/gas setups, I don't know what its called ,who makes it or where to get it but Iknow it exists as I owned an XD 351 on gas with it when I bought it ,I found gas can take up to 10 deg more advance, making it more "efficiant". Mine was a sprintgas set up maybe they know about it?

 

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Posted: Mon Dec 13, 2004 7:24 pm 
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Carefull not to advance it too far as it will start to hunt at idle. I found this out on my EECV in my ED went fine for a little while then started to hunt, retarded it back to 4 deg and it was fine again (std is 0 +-2) and yeah wait the 2 min before you adjust.

 

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Posted: Mon Dec 13, 2004 8:47 pm 
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neil101 wrote:
Carefull not to advance it too far as it will start to hunt at idle. I found this out on my EECV in my ED went fine for a little while then started to hunt, retarded it back to 4 deg and it was fine again (std is 0 +-2) and yeah wait the 2 min before you adjust.


Neil, I have this when the air conditioning is on and its in drive.

Drop it to neutral and it goes away. Wont be a problem for long though :)
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Posted: Tue Dec 14, 2004 6:13 pm 
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Thats good glade I could help :D

 

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Posted: Thu Dec 16, 2004 11:38 pm 
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neil101 wrote:
Carefull not to advance it too far as it will start to hunt at idle. I found this out on my EECV in my ED went fine for a little while then started to hunt, retarded it back to 4 deg and it was fine again (std is 0 +-2) and yeah wait the 2 min before you adjust.

I guess you cant compare the two due to different types & styles of engines, as the clevo I ran on BBQ fuel could hande 12-18 degrees initial timing ,but max advance was limited to 25 deg @ 3200rpm, this was the happiest on the dyno, but petrol was happy at 10 deg initial and max 30 deg @ 4000rpm. I couldn't set up for the two so I pulled out the fuel tank to resist temptation.

 

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