Trigger wheels for Aftermarket ECU/EMS

I had noticed that Brian,

You may well gain a bidder :)

I have done this for my DTA engine management system.

36 -1 wheel with sensor mounted below water pump.

The most difficult thing to do was to mount the wheel on the pulley - in that the first time I did it the mounting bolts  (4mm) sheared after one track day.  I was told that the inertia forces can do this.

It is now mounted using a 10mm by 6mm steel ring that is welded to the trigger wheel and then radially secured to the crank pulley using four 6mm allen key bolts.

This setup is fine.

Make sure you incorporated some sort of adjustment for the accurate alignment of the sensor. You may be told that you can adjust for misalignement of the sensor in the software BUT if done correctly you wil be able to use another DTA or Emerald ECU by just plugging it in rather than resetting parameters.

My engine is out at present being rebuilt so I can take pics very easily at any angle.

THIS WILL NEED MAPPING BY SOMEONE TO GET THE BEST OUT OF IT  and for DTA expect about £450.

 

Karl

Edited by Karlp

I did get the wheel from DTA - but it is no different than anything else (plenty on ebay) just more expensive.  It is mounted on the inside of the hub.  The flange is reduced and the mounting ring 'turned' to fit.

 

Karl

Edited by Karlp

Karlp wrote: I did get the wheel from DTA - but it is no different than anything else (plenty on ebay) just more expensive.  It is mounted on the inside of the hub.  The flange is reduced and the mounting ring 'turned' to fit.

Looks like I'll be digging the lathe out then .

I'll PM you my email for some photos if that's ok..

Thanks

 

Steve,

Dizzy less is something I will definitely be doing.  Sequential may be out of my budget...

*goes off to start searching fro more details on sequential injection*

 

Edited by jpboost

UweM3 wrote: Loosing the dizzy is probably one of biggest benefits of an aftermarket ECU. But I am not sure if it's worth the effort for sequential injection. We're talking of improvements behind the comma IMHO. But if you're like to fiddle around with things it's worth it

IF your doint the work to put the cam trigger in, you might as well double up the injector wiring and go the whole hog.

Already got a spare loom to look in to it

Steve

John, you can use all sorts of trigger wheels/ sensors off other vehicles,
what comes off a Granada is a well used option.

You can buy a crank pully pre-drilled and with a trigger wheel off
Powerstation as well as the sensor bracket, I doubt that would be too
much. The wheel is an off the shelf item. You could then use this to plug
into any system. Easy tried and tested.

It all depends how much 'effort' you want to put into building a loom to
go with it. Personally as you know, unless you are going for outright race
spec engine/ track day car with seqential injection, COP etc,   I believe the
MaXX kit is better as it uses all the std parameters, sensors etc. It isn't
too much trouble to get a decent ignition map sorted and burned onto
the chip. All of which makes better sence on a road car.

As Uwe can testfy with the MaXX you can carry just a few parts in the boot
to convert back to standard on the side of the road in very little time if
something goes wrong. Things like that make sence to me on a road car.

Going to COP, is quite involved. Only VAC in the states (as far as I know)
produces any off the shelf parts to use a ref/ sync sensor (E34 M5 style)
Obviously you can use a ignition expander sytem with seperate coils, but
you still need a sync sensor. Otherwise you will need to have parts CNC
machined to fit your needs.

Again though, I don't think you will see any noticable benefit in
performance for the trouble and outlay. Same goes for sequntaial.

Better off spending the money on decent head work, cams, pistons........!

Why not get you head ported while the engine is out, keep the std cams
for now and go for a Maxx. Toby did this and he's got 240hp....

Unless you want to make me an offer for mine......lots of whisles and bells
to play with    ;-)


Edited by 215DMX

I think it probably stems from it being the recommended thing to do for so many other engines.  Whenever looking at properly tuning engines, I've always been led to belive that dizzys (and the timing scatter they introduce) were best avoided.

It's not a goal I'd specifically chase on it's own, but if I was spending money on some sort of management, it's something i'd certainly try to include...

Regarding costs -for a DTA system this is what I spent.

DTA  599

Loom 299

Ignition coil (to go distributorless )  £10 from ebay  50 normally

Trigger wheel  40  (in hindsight too expensive)

Injectors 250  (depends on impedence needed by ECU)

Sensors  60  (need crank trigger and air temp)

TPS - cannot remember but about 30

Mapping  450

all + VAT where applicable.

Karl