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Author: Subject: AJ30 / Duratec v6 - ECU setup details
spegru

posted on 7/11/24 at 09:38 PM Reply With Quote
AJ30 / Duratec v6 - ECU setup details

I know there are a number of threads on this subject but so far Ive not been able to get my AJ30 running properly:
I'm using a MotorSport Electronics ME360 ECU

First Question - Trigger Offset: THE ECU needs to know what angle the crank shaft sensor is at and it seems that the AJ30's is not at TDC. Nor are there any markings on the front pulley.

So I went through the following rigmarole:
a) Mark the pulley with tippex to get distance angles using my calculations based on its circumference and
b) discovered actual TDC using a screwdriver down the spark plug hole.
c) I then managed to get a timing light working (even though there are no plug leads) to find the trigger point.

According to all that, it appears that the trigger is 302 degrees after TDC which is of course 58 degrees before TDC.

I cant be all that much out because the engine does run - albeit extremely roughly

I write all the above because in spite of researching the forum here I was surprised not to be able to find this crucial figure and so I do wonder if Ive somehow got something wrong?





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40inches

posted on 8/11/24 at 12:20 PM Reply With Quote
quote:
Originally posted by spegru
I know there are a number of threads on this subject but so far Ive not been able to get my AJ30 running properly:
I'm using a MotorSport Electronics ME360 ECU

First Question - Trigger Offset: THE ECU needs to know what angle the crank shaft sensor is at and it seems that the AJ30's is not at TDC. Nor are there any markings on the front pulley.

Looks like it is 50 degrees btdc

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spegru

posted on 8/11/24 at 02:30 PM Reply With Quote
Interesting.
I suppose this is MegaSquirt/Jolt? I also assume you are using the built in sensor, not an external sensor/wheel?

This Setting in the ME360 MEITE setup software is degrees after TDC so my 302 figure corresponds to 58deg BTDC, which is 8 degrees different to your figure.
That may not matter - if it's all taken care of in the timing tables, which presumably could be 8 degrees different

On the other hand, MSE have downloaded an initial timing setup to me that may or may not use that same offset (they didnt have a figure available for the AJ30)
I wonder what would happen if I change it to 310?

hmm thanks

[Edited on 8/11/24 by spegru]





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MikeR

posted on 8/11/24 at 03:43 PM Reply With Quote
Are you both triggering on the same tooth edge - the teeth edges are 10 degrees apart so you could in reality be 2 degrees different.
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