<![CDATA[Alfa Romeo Bulletin Board & Forums - Engine Conversions]]> http://www.alfabb.com/bb/forums/ en Thu, 09 Sep 2010 10:59:15 GMT vBulletin 60 http://www.alfabb.com/bb/forums/images_ab/misc/rss.jpg <![CDATA[Alfa Romeo Bulletin Board & Forums - Engine Conversions]]> http://www.alfabb.com/bb/forums/ Twin Spark Conversion Wiring Question http://www.alfabb.com/bb/forums/engine-conversions/170362-twin-spark-conversion-wiring-question.html Sun, 05 Sep 2010 13:07:41 GMT I’m trying to work out how to splice the Motronic ECU wiring harness from an Alfa 75/Milano Twin Spark into the existing wiring harness of a 1969 GT1300 Junior (105.31).... as part of a Twin Spark engine swap.

The Alfa 75 ECU wiring harness is pretty much a standalone/self contained system, except for a power supply coming from the battery to a four relay block, which is part of the ECU harness, and a six pin connector on the ECU harness (the connector contains five wires), which connects the ECU harness to the main Alfa 75 wiring harness.

Using an Alfa 75 Twin Spark wiring diagram, I’ve managed to identify the following functions (or at least connections) for each of the five wires in the ECU harness connector:
  1. There’s a brown/white wire coming from one of the ignition coils, through the connector, and then on to the tachometer. No problem understanding the purpose of this one.
  2. There’s a pink/white wire coming from the “Petrol Pump Motronic Relay” on the ECU harness, through the connector and then on to the main and auxiliary electric fuel pumps (ie through the fuse box). No problem understanding the purpose of this one either.
  3. There’s a green/black wire either coming from or to the “Auxiliary Motronic Relay” in the ECU harness, through the connector, and then to the Alfa 75 ignition switch. I’m guessing this is what activates the Motronic EMC when the ignition is switched on. If so, to which terminal on the GT1300 Junior ignition switch should this wire be connected?
  4. There’s a grey/yellow wire either coming from or to the Motronic EMC, through the connector, and then from or to the “Relay for Simultaneous Coupling & Supplementary Electric Fan”. I’m unclear what the purpose of this wire is.... can anyone advise?
  5. There’s a yellow/green wire either coming from or to the Motronic EMC, through the connector, and then from or to the air conditioning unit. I’m also unclear what the purpose of this wire is.... can anyone advise?
I'll be fitting air conditioning as part of the engine conversion, so I do need to know what the grey/yellow and yellow/green wires do as they both seem to be related to the operation of the air conditioning system. Any assistance would be very much appreciated. ]]> Engine Conversions njh1964 http://www.alfabb.com/bb/forums/engine-conversions/170362-twin-spark-conversion-wiring-question.html Engine Management for Twin Sparks http://www.alfabb.com/bb/forums/engine-conversions/170014-engine-management-twin-sparks.html Sun, 29 Aug 2010 18:05:39 GMT I was looking at the work being done on The Very Modified GTV and it got me thinking about what other Engine Management systems are being used.
http://www.alfabb.com/bb/forums/gt-1...ed-gtv-57.html

I started using Weber 45's and the modified distributor from Jim Steck.
Alfa Twinspark Conversion Parts

Now I am running motorcycle throttle bodies GM coil packs and a DTA Fast computer.
DTAfast Home Page

The very modified GtV is using a Tec 3 from Electromotive .
TEC³ - by Electromotive

And iachella is using an Emrald K3 .
Welcome to the Emerald M3D homepage

Then there is the stock Bosch Motronic system.

And the grass routes MegaSquirt build it your self or prebuilt.
MegaSquirt - Electronic Fuel Injection Computer by Bowling and Grippo ©2010

Also there is an ignition only setup from Alfaholics.
Full 3-Dimensional Ignition Map for Twin Spark


The reason I went to the DTA Fast S60 Pro was because it makes twin spark so simple. In the program you check a box and you have TS. Also it controls the coil packs direct no extra bits to add and wire .

The biggest selling point was the local dealer here in Toronto .
Eurospeed.ca
I have heard stories from a number of guys having never ending problems with their ECU conversions and it comes down to not having local tech support. I think it's a must to have someone who has a Dyno and knows the finer points of the ECU.

Also having a user group is a big plus. Like the one for DTA .
dtaforum.psycode.com :: Index ]]> Engine Conversions 69alfa http://www.alfabb.com/bb/forums/engine-conversions/170014-engine-management-twin-sparks.html 8v 2L Supercharged http://www.alfabb.com/bb/forums/engine-conversions/169885-8v-2l-supercharged.html Wed, 25 Aug 2010 23:53:18 GMT i thought i would start a thread about my current project. the car is a 79 gtv that iam restroring/building for the track. originally planned to turbo it using dellortos as per my thread 'turbo' but after doing some reaserch and getting some bits and pieces off a freind of mine i decided to go with efi. with the bits and pieces also came a sc14 supercharger.

for a while i didnt know what i wanted to do with the project.. either turbo, supercharger, 3ltr V6 or a nissan engine import but either way i wanted more power. but after some thinking and advice i have decided to go with the supercharger option. the freind i got the parts of ran an sc14 on his standard engine with great success. i basically plan to copy his set up. i have a modified 2l engine that has some serious head work and cams (done by previous owner) that i plan to use.the efi system i am using is the delco '808' found in many GM cars around the world. i will be using the system from a camira, but adding distributerless ignition from a lada niva.

my plan is to bolt the sc14 on to the inlet side of the engine, use a camira inlet manifold mounted onto the alfa inlet manifold (same as 'buzzeds'), add the lada ignition to the camira loom and have the delco 're-mapped'.
i plan not to open up the motor and run it on the standard 9:1 CR. to start off with i will be running with 6-7 psi and see how it goes. i will later push for 10psi with an intercooler and water injection. on 10 psi i plan for 200 - 230 hp at the flywheel.

i am in no rush and the build will go on over a long period of time. for now i will be getting my 2 junior speed CAMS liscence and having some fun at my local track in my future daily driver GTV :D

if you have any questions, suggestions or thoughts please let me know!
cheers, brad ]]> Engine Conversions BradGTV http://www.alfabb.com/bb/forums/engine-conversions/169885-8v-2l-supercharged.html 105 (Giulia) steering in a 750/101 (Giulietta/Giulia)? http://www.alfabb.com/bb/forums/engine-conversions/169798-105-giulia-steering-750-101-giulietta-giulia.html Tue, 24 Aug 2010 09:39:24 GMT The steeringcolumn from a Giulietta goes to the front of the enginecompartiment, whereas the column from the Giulia's goes to the back of the front axel.
Has anyone fitted a Giulia steeringrack to a Giulietta before?

The background for this question is that my thoughts come back to the same conclusion: The Giulia Spider with a 2- of 2,5 liter V6 Alfa engine is the car that should look good beside a Lancia Aurelia. The smooth engine and the sound should fit the car very well, I think.
But with the original steeringcolumn in place, it won't fit anyway. ]]> Engine Conversions !Mario http://www.alfabb.com/bb/forums/engine-conversions/169798-105-giulia-steering-750-101-giulietta-giulia.html Alfa Romeo 155 engine replaced with 156/166/GTV http://www.alfabb.com/bb/forums/engine-conversions/169775-alfa-romeo-155-engine-replaced-156-166-gtv.html Mon, 23 Aug 2010 21:17:13 GMT Hello, everyone. Start this thread by apologizing for mistakes or for posting the wrong place. And all because they are in Romania, Romanian and I translated from Romanian into English by "Google Translate".

A-and like to know if anyone has knowledge in the field and can help me with some questions, tips, sketches and details. I am interested if you can fit a 2.5L V6 engine with another 24v after 156 or 166, or a 2.0L V6 engine or the 164 Turbo after a GTV Alfa Romeo 2.5L V6 12V. A-and wish to exchange the engine for more power and the reason that the current engine has a "beat" and throw oil on the hose near the air filter and it might not hold true.
Anyone can help me with some details, if this change is possible and exactly what changes should be made, if it goes to mount and gearbox after 156 and planetarele longer fit or have occurred on the wheel, steering angle of flight box steering, front deck, various body modifications, etc., or may let the old 155.

The engine need to change something, and I refer to the wheels, steering, front deck, wages did not want to intervene, and wages there is very hard to do well and go after any change of stability bridge, box steering, all wheels.
With the engine change is needed, to take on-board computer and then was taken by car engine, or go and the old (computer) and can put a new software compatible with that engine? If you need a replacement and the computer, you interest me fit wires, plugs 155 or old electrical wiring needed replacing with the following doficarea The other car or her?

Would be very many dilemmas, and therefore want to know if someone / knows about a possible replacement engine that surgery will be and what changes, what to expect and what to do.

Thank you and again I apologize for the inconvenience and for any mistakes. ]]> Engine Conversions NoBody http://www.alfabb.com/bb/forums/engine-conversions/169775-alfa-romeo-155-engine-replaced-156-166-gtv.html new turbos on ebay and web http://www.alfabb.com/bb/forums/engine-conversions/169692-new-turbos-ebay-web.html Sun, 22 Aug 2010 17:03:08 GMT Alfa Romeo Spider T3T4 TurboCharger Turbo Kit: eBay...]]> A friend of mine bought one of these kits and he likes it. Does any body know any thing about them ? Made in china? Its only $399.00 shiped. :rolleyes: This one is on ebay

Web page link ( Alfa Romeo Spider T3T4 TurboCharger Turbo Kit: eBay Motors (item 270460993136 end time Sep-19-10 11:38:24 PDT)) 7 or 8 lbs is all I want. Thanks
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