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parrish
Moderator
United Kingdom
592 Posts |
 Posted - 24 Jul 2009 : 14:52:15
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I decided some time ago to fit an aftermarket ECU and EFI to my Strada Abarth engined fiat 131 sporting. To date i have purchased an OMEX 600 ECU with wiring for expansion to include the EFI at some time in the future.
Progress so far is as shown below.
As i work away from home the project may take several months for me to complete.
Steve.
This is what you get for your money (ECU and all additional extras).
The ECU.
Coil Pack.
Trigger wheel and crank position sensor (CPS).
Plug Leads.
Throttle positon sensor (TPS).
Wiring loom.
Progress to date.
Template for locating CPS to be fabricated in mild steel sheet.
Suitable grommet in bulkhead adjacent the glove box used for wiring.
ECU will be located in the glove box, suitable support will be made, note hole in the glove box for the wiring.
Coil pack will sit between front upright and bulkhead, fabrication of bracket required.
Only damage to date.
Additional gauges being fitted at the same time, volt meter will fill the last hole, water temperature will be in degrees C.
more to come as and when i progress.
Steve
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Cars and bikes owned:
1983 Fiat 131,
1997 BMW Z3,
1984 XR3i,
2007 Fiesta Ghia,
2007 Harley Sportster (for sale)
2007 Sport KA
Plus three Grandchildren!
Looking for a Ferrari. |
Edited by - parrish on 24 Jul 2009 14:54:23
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mirafioriman
Net Member
24 Posts |
Posted - 24 Jul 2009 : 20:46:32
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| You have made a good start there Steve. Did you get a distributor blanking plate also? |
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parrish
Moderator
United Kingdom
592 Posts |
Posted - 24 Jul 2009 : 23:52:51
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No distributor blanking plate just yet, as im using the same offsett manifold im leaving the distributor where it is for now just incase it all goes wrong!!!
Im sure that i can come up with some way of blanking the distributor hole, does any one know if i need a special plate? or can i just pull the distributor and blank the hole? |
Cars and bikes owned:
1983 Fiat 131,
1997 BMW Z3,
1984 XR3i,
2007 Fiesta Ghia,
2007 Harley Sportster (for sale)
2007 Sport KA
Plus three Grandchildren!
Looking for a Ferrari. |
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mirafioriman
Net Member
24 Posts |
Posted - 25 Jul 2009 : 00:27:18
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| Removing the distributor should not cause a problem just make sure nothing goes down or comes out the hole! |
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James
Net Member
United Kingdom
261 Posts |
Posted - 25 Jul 2009 : 22:42:10
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Steve,
I don't know this engine....But! On the SOHC the dib. shares the same drive as the oil pump. When removing the dib. you need to put in a blanking plug, which pushes against / stops the drive gear coming up and disengaging from the oil pump shaft splines. Later models of this engine having EFI, have the plug fitted as standard. Possibly the same with the twink??
Also, make sure the TPS is fitted as rigidly as possible. Any flex in the mounting will mean a fluctuating ignition advance curve. Hope that's not too sucky egg! I found this out the hard way.
Cheers James
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parrish
Moderator
United Kingdom
592 Posts |
Posted - 30 Jul 2009 : 20:11:14
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Hi James,
the TPS is the Throttle Position sensor, im thinking you are refering to the CPS Crank Position Sensor, this has to be placed 0.50 - 0.75mm from the trigger wheel and as you say must be rigid.
Ive fabricated a substantial bracket from some sheet steel which is bolted to the front of the oil filter carrier which used to have a power steering pump.
Elongated holes in the bracket will allow me to position the sensor where it needs to be just as soon as ive had a distance piece made up for the triger wheel and have it located in position.
My next job is the fixing of the trigger wheel but as im back off to work for a month soon it may have to wait, in the mean time ive some gauges to wire in.
Regards
Steve
Front view of bracket and sensor.
Side view, showing stiffening web's.
Mock up.
Mock up.
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Cars and bikes owned:
1983 Fiat 131,
1997 BMW Z3,
1984 XR3i,
2007 Fiesta Ghia,
2007 Harley Sportster (for sale)
2007 Sport KA
Plus three Grandchildren!
Looking for a Ferrari. |
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parrish
Moderator
United Kingdom
592 Posts |
Posted - 13 Sep 2009 : 19:59:46
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An update.
Im back from work and intended to get some more progress complete on the ECU/EFI. The supplier however has a 7 day wait on the throttle bodies, plus they then have to be posted to me here in Granada Spain, so it looks like a couple of weeks before i can get on.
In the meantime ive re-thought the CPS (Crank Position Sensor) and will now fit a bracket to the left of the engine.
Ive fitted an oil cooler, ordered new radiator and water pump, all jobs that i might as well do whilst the front of the engine is accesible, luckily for me the cam belt was changed about 500 miles ago so im leaving that alone.
Ive also a full roll cage to fit, if anything i may continue with that this week.
Fuel delivery system is on its way (Swirl pot, High pressure fuel pump, Filters etc) may do some of that this next week, ill post as and when.
Steve |
Cars and bikes owned:
1983 Fiat 131,
1997 BMW Z3,
1984 XR3i,
2007 Fiesta Ghia,
2007 Harley Sportster (for sale)
2007 Sport KA
Plus three Grandchildren!
Looking for a Ferrari. |
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parrish
Moderator
United Kingdom
592 Posts |
Posted - 20 Sep 2009 : 20:18:57
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An update with a few more pictures.
As i mentioned earlier ive re-thought the position of the CPS and as you can see from the photos the bracket required is shorter and less complicated, allowing the finnished article to be more ridgid.
Trigger wheel and CPS are now fixed as per OMEX instructions, that is the missing tooth on the trigger wheel has to be adjacent the CPS when the crank is at 90 Degrees BTDC No1 Cylinder and 0.5mm distance.
The coil block is fitted to the inner wing at the rear of the engine bay.
Oil cooler is fitted and plumbed in.
Oil breather system is to be completed but routing is finnished.
I have a distributor blanking plate but will leave fitting that until the technology is proven? plus it helps to identify No1 Firing for timing the CPS in (which should be done now).
So now waiting for thge next delivery of throttle bodies, fuel delivery system, swirl pot etc. which should be with me next week.
In the mean time im going to get the cage in and sort the interior out a little.
Steve
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Cars and bikes owned:
1983 Fiat 131,
1997 BMW Z3,
1984 XR3i,
2007 Fiesta Ghia,
2007 Harley Sportster (for sale)
2007 Sport KA
Plus three Grandchildren!
Looking for a Ferrari. |
Edited by - parrish on 20 Sep 2009 20:21:45 |
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parrish
Moderator
United Kingdom
592 Posts |
Posted - 05 Oct 2009 : 10:51:16
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Santa came early!
Away at work for the next month so will have to leave it all alone.
More in November.
Steve
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Cars and bikes owned:
1983 Fiat 131,
1997 BMW Z3,
1984 XR3i,
2007 Fiesta Ghia,
2007 Harley Sportster (for sale)
2007 Sport KA
Plus three Grandchildren!
Looking for a Ferrari. |
Edited by - parrish on 05 Oct 2009 10:53:45 |
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parrish
Moderator
United Kingdom
592 Posts |
Posted - 11 Dec 2009 : 14:38:19
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Ive managed to get some of the items fitted.
Throttle bodies, injectors are now in place.
Fuel system to finnish.
More next time im home (January)
Steve
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Cars and bikes owned:
1983 Fiat 131,
1997 BMW Z3,
1984 XR3i,
2007 Fiesta Ghia,
2007 Harley Sportster (for sale)
2007 Sport KA
Plus three Grandchildren!
Looking for a Ferrari. |
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julian
Forum Admin
United Kingdom
2834 Posts |
Posted - 11 Dec 2009 : 15:57:59
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What airbox are you going to use?
Looks the business by the way  |
1998 Seicento 600M - extreme version
2000 Ford Explorer LPG'd up but well and truely f****d
1978 Replica Icsunonove w/Uno Turbo power (250bhp+ and 600kg)
2009 Abarth 500 |
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parrish
Moderator
United Kingdom
592 Posts |
Posted - 14 Dec 2009 : 06:14:53
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Hi Julian,
if you look carefully you can see i have clerance problems between the last trumpet and the bulkhead, trumpet is actually touching the wiring just where ive had to remove the plastic fuse box covering.
When i have proved the technology! ie actually started the engine, and as the distribitior has been removed, in future i plan to fit a straight inlet manifold (any ideas) that will then solve my clerance problem and allow me to fit a backplate and air box with filter. I can then recover some of the cost of fitting the throttle bodies by selling the 45s along with the Guy Croft offset inlet manifold.
If i cannot get a straight manifold i will leave the throttle bodies as they are and modify the last trumpet and fit socks! although i would prefer a proper airbox and filters.
Steve
Having said all this i could also fit the waffle plate Downdraught manifold and then fit the throttle bodies to that? i wonder if i would have clerance? |
Cars and bikes owned:
1983 Fiat 131,
1997 BMW Z3,
1984 XR3i,
2007 Fiesta Ghia,
2007 Harley Sportster (for sale)
2007 Sport KA
Plus three Grandchildren!
Looking for a Ferrari. |
Edited by - parrish on 14 Dec 2009 06:38:17 |
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sumplug
Moderator
United Kingdom
5112 Posts |
Posted - 14 Dec 2009 : 11:38:23
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Hi Steve.
I see from the pics, you are running the Throttle Bodies Horizontal. I think you will get running problems. They shoould be set at approx 20 degrees upward. Did the Throttle Body suppliers say different?
There are a few companies who could make you a manifold, using the gasket as a template.
Does look the business though. Wish it was mine!!
Andy. |
Fiat Coupe 20vt
Audi A6 Avant 4.2 Sport LPG
??? Wait and see!!
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parrish
Moderator
United Kingdom
592 Posts |
Posted - 14 Dec 2009 : 12:10:28
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Andy,
thats interesting 20 degrees you say?
No one has ever mentioned that to me, im no expert so ill go ask those that are advising me the question.
I dont know if it makes any difference, however i dont intend using the car for competition only normal road use.
Why the 20 degrees? liquid Fuel flow?
Steve
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Cars and bikes owned:
1983 Fiat 131,
1997 BMW Z3,
1984 XR3i,
2007 Fiesta Ghia,
2007 Harley Sportster (for sale)
2007 Sport KA
Plus three Grandchildren!
Looking for a Ferrari. |
Edited by - parrish on 14 Dec 2009 12:25:56 |
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sumplug
Moderator
United Kingdom
5112 Posts |
Posted - 14 Dec 2009 : 15:12:40
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Its something I read ages ago I think on Guy Croft's site. As you know, he does not like TB's, prefers Carbs. If i remember, its to do with the angle of the injector and angle of butterfly. I know on Bike TB's, they are angled at 20%. If I remember, it was a chap from Australia, with a Peugeot 16V unit, who explained all about TB's.
All car engines I have seen with TB's, have all been angled around 20% Are they Jenvey TB's?
Andy. |
Fiat Coupe 20vt
Audi A6 Avant 4.2 Sport LPG
??? Wait and see!!
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parrish
Moderator
United Kingdom
592 Posts |
Posted - 15 Dec 2009 : 03:11:29
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Andy,
Yes Jenvey TB's, Northampton Motorsports are supplying me with all that i need, some of it they obviously have to buy in which means i sometimes have to wait for bits and pieces, that however suits me as i dont get a lot of time to work on her when im at home, so a few bits now and then is fine. The last bits arrived last week so January should see some life back into the engine.
Meanwhile one of the rear brake cylinder's started to leak, so have bought a pair with a completed set of new shoes, so another job to do!
Ive also bought my self a 1984 Mk3 XR3i!!! which i will be driving down to Spain Early January, low mileage excellent no rust body shell although the interior is a bit dated, no rips or tears just some stains and mould where she was laid up for a while in the 80-90's, so i have a bit interior tidying on the XR3i to do when i get to Spain as well.
More photos of the 131 some time in January in the mean time im still investigating the 20 Degree's.
Steve
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Cars and bikes owned:
1983 Fiat 131,
1997 BMW Z3,
1984 XR3i,
2007 Fiesta Ghia,
2007 Harley Sportster (for sale)
2007 Sport KA
Plus three Grandchildren!
Looking for a Ferrari. |
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Topic |
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Fitting an ECU/EFI onto my 131 engine.
