131mirafiori forum

Ive spent so much time making a bracket for the CPS (Crank Position Sensor) ive forgoten which way the crank rotates!
Now i need to time the sensor 90 degrees before TDC No1.
Strada Abarth Engine, looking end on at the bottom front pulley wheel, which way does it turn?
I suspect clockwise?
Steve

I'm pretty sure it's clockwise too, but, just turn the engine for a second or two on the starter and get an assistant to check. Better to be sure!

Should the sensor not be 10 degrees BTDC?

OMEX instructions are to set TDC No1 then turn crank to 90 degrees before TDC, CPS should then be aligned with the missing tooth in the trigger wheel.
Steve
Battery is off the car i suppose id best go connect it and see what hsappens.

Clockwise.
Connected battery and gave it a whirl.

If you are running unleaded you should bring it to approx 5 degrees btdc as there is a Fiat service news for it....

Im in the middle of fitting an OMEX ECU and following the instructions as given, the trigger wheel is set at 90 degrees before TDC No1 cylinder, the ECU will take care of the timing issues once the programme is loaded.
Steve
(http://i435.photobucket.com/albums/qq71/parrish_028/P9201332.jpg)
(http://i435.photobucket.com/albums/qq71/parrish_028/P7201000.jpg)

Parish,

I am building a new performance engine and just found out that you are installing an Omex system.

I am very interested in learning both technical aspects of installation as well as operation.

Would appreciate any information you can post here on your progress .

Are you installing Omex 100  ( with or w/o distributor?)

Miro    

Hi Miro,
im fitting an omex 600 ECU/EFI, thats electronic ignition and electronic fuel injection with Throttle bodies, without distributor ill post a few extra photos below.
As i only get every other month at home the going is slow at the moment, but i hope to get 90% of the work competed before the end of November.
To date ive fitted the Trigger wheel and Crank positon sender to the front of the engine, Omex unit is in the dash and wired in, Coil unit is fitted onto the inner wing.
To Do: Fuel system, Swirl pot, pumps, filters, lines, throtle bodies, injectors, filters etc.
The good thing about Omex is that you can get the car up and running with a down load from Omex, before going to a rolling road.
Any questions please ask, see photos of current progress and bits and bobs.
Steve
First the bits
(http://i435.photobucket.com/albums/qq71/parrish_028/PA051492.jpg)
EFI Pieces
(http://i435.photobucket.com/albums/qq71/parrish_028/P7201000.jpg)
ECU Pieces
Coil block on inner wing
(http://i435.photobucket.com/albums/qq71/parrish_028/P9201340.jpg)
Trigger wheel on front of crank and the bracket i used for the CPS.
(http://i435.photobucket.com/albums/qq71/parrish_028/P9141303.jpg)
Omex 600 in glove box
(http://i435.photobucket.com/albums/qq71/parrish_028/P7241070.jpg)
Used this grommet to pull all wires through.
(http://i435.photobucket.com/albums/qq71/parrish_028/P7241077.jpg)
Trigger wheel and CPS fitted as per Omex instruction (google Omex and go to their www loads of info on line)
(http://i435.photobucket.com/albums/qq71/parrish_028/P9201332.jpg)
Just as an extra thought, im fitting a roll cage whilst im on with the ECU/EFI.
(http://i435.photobucket.com/albums/qq71/parrish_028/PA031473.jpg)
Omex do a 400, which is ECU only however in future if you ever wanted to upgrade to EFI you would have to get the 600.
Its not cheap! to date its cost me over 1800 pounds and im not finnished, its  things like high pressure fuel pumps,swirl pots, fuel lines, filters, injectors etc etc that start to put the price up.
Steve
PS Heres the Omex www link.
http://www.omextechnology.co.uk/
And heres where i bought mine from, you need to contact a man called Troy Robinson hes very helpfull and a wealth of information, will spend time with you on any problems you may have. e mail and ask for Troy.
http://www.northamptonmotorsport.com/

In case someone needs cheaper alternative then megasquirt v 3.0 works very good with TC engines and you can use sensor and bracket from late digiplex fiat 132.

I'm fitting a Megajolt ignition system to my Fiat 130. I'm only running the ignition set up as I'm sticking with the standard carb but it is much cheaper than the OMEX system. If you have to run carbs because of historic rally regs etc it makes sense to go down this route, however fuel injection obviously brings greater performance and economy ;D

Fiat 131 never had(at least not in my FIA homologation papers) IDF or DCOE carbs fitted in their rally cars but a kugelficher injection so taking into account that mechanical injection is really hard to get then EFI is closer to the original setup then IDF carbs.
I do not say that works cars did not use carbs at all but it was not mentioned in homologation for group 4 car(just standard single carb). But i cannot find anywhere group 4 rules that could allow any other induction kit to be used.