N/A 4AGE 16V in AE86 - help needed, trying to "VEMS it"

[uzelac]

Is there enough difference in steel and stainless steel "magnetic capabilities" so HALL sensor will work OK ?

[uzelac]

I'll answer myself :)
Yes, depending on type of stainless steel it can be almost non-magnetic. Great :)

Now i must decide which way to go, try to use distributor or go the distributorless route.

[uzelac]

VEMS board in Bosch casing:

[uzelac]

Assembled intake

[uzelac]

Made trigger yesterday. Took standard 4AGE pulley, cuted the front part (which is used on cars with power steering and A/C) to 125mm from around 130mm, heated the AR wheel (ID 124,7mm) and let it cool.

Final product:





Hope i positioned two missing teeth in right place.
When engine is at GMT the mark on pulley is pointing up, 0'.
HALL sensor is at 90' clockwise and missing teeth are at 180'.

Sounds ok ?

[uzelac]

[mattias]

Hope i positioned two missing teeth in right place.
When engine is at GMT the mark on pulley is pointing up, 0'.
HALL sensor is at 90' clockwise and missing teeth are at 180'.

Sounds ok ?

Sounds good to go.  Make sure the trigger sensor mount is solid, should not vibrate much if hit with a wrench, nor be able to move/bend with your hand.

A starting point for your trigger settings would be to first pick "4 cyl 60-2" from the drop-down in the "primary trigger" dialog.
Then TDC will appear 30 teeth after the missing teeth pass by the sensor. That means :

First trigger tooth = 20  (20x6 = 120 degrees past missing teeth)
TDC after the trigger = 60  (10 teeth to go = 6x10 = 60 degrees more for TDC)

[uzelac]

I'm sure my trigger wheel sensor mount is solid, 5-10mm thick steel bolted to engine block. It hardly even vibrates when i hit it with a hammer, did try to hammer it closer to wheel, ended up with putting washers since it wouldn't move :).

Btw. thanks for great info about trigger setup. Should be putting loom in next few days, so now is a great time to learn about all those various alpha-n or other options and mode of operation.
For now, i won't have cam trigger so we plan to use it in some batch mode, not full sequential.

[uzelac]

[GintsK]

If it vibrates (makes sound) when you hit it with hammer, it is not solid enough.
Once I had problem with resonance vibration on better designed mount - same thickness but shorter.

[uzelac]

Huh, will hit it tommorow and see if it vibrates.
Planning to use some light paint like stuff and put it on tooths. When i hit sender with hammer, it if stays without paint, than i presume it's good to go :)

[uzelac]

BMW coils, dizzy is there just to hold oil pouring from the head, will be removed at the end :)





Loom should be ready in few days... should :)

[Ignitec]

I've made one c20xe with similar setup like yours, but with VAG coils. What ITBs are those?

[uzelac]

from bike, Suzuki Hayabusa.
Biggest i could find :)

[uzelac]

Here comes the loom: