 are the ECU,s on the 1973 and 74 2.0 the same? |
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| crxnug |
 Feb 2 2011, 12:46 PM
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Member  Group: Members Posts: 81 Joined: 20-December 07 From: ontario, canada Member No.: 8,489  |
im hoping someone can answer this for me, are the ecu,s on a 1973 2.0 the same unit as on a 1974 2.0 , can i swap one for the other are are there differences?
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| dr914@autoatlanta.com |
Feb 2 2011, 12:56 PM
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914 Guru Group: Members Posts: 7,888 Joined: 3-January 07 From: atlanta georgia Member No.: 7,418 Region Association: None |
There were quite a few different ones as the years went by but now only maybe two one for the 73-74 and the other for the 75-76. Actually any 914 1.7 or 2.0 control unit will interchange. The injection systems are so old now that the subtleties really do not make any difference.
QUOTE(crxnug @ Feb 2 2011, 11:46 AM)  im hoping someone can answer this for me, are the ecu,s on a 1973 2.0 the same unit as on a 1974 2.0 , can i swap one for the other are are there differences? |
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| detoxcowboy |
Feb 2 2011, 01:01 PM
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Senior Member Group: Members Posts: 1,294 Joined: 30-January 08 Member No.: 8,642 Region Association: Africa |
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| Tom_T |
Feb 2 2011, 02:16 PM
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TMI.... Group: Members Posts: 8,318 Joined: 19-March 09 From: Orange, CA Member No.: 10,181 Region Association: Southern California 
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IIRC there were different ECUs & many other EFI system parts between 73 & 74 2.0s - for example the 017 CHT, many of which do make a difference & will drive you crazy trying to run down odd little running issues.
Use the Porsche 914 PET parts catalog at this link to get the proper part no., using the model & year application info. in the right cols.: http://www.porsche.com/all/media/pdf/origi...USA_KATALOG.pdf If you have a proper part no. core ECU for yours (double check in the PET at link above, cuz the PO could've changed it, & save the pdf on your computer for future ref.), then Pelican also offers a rebuild service by Fuel Injection Corp./BRET in Calif., at this link: http://www.pelicanparts.com/catalog/shopca...j_pg2.htm#item9 73 2L - http://www.pelicanparts.com/cgi-bin/smart/...73%29%2C%20Each 74 2L - http://www.pelicanparts.com/cgi-bin/smart/...74%29%2C%20Each Not sure which you have - 73 or 74 & if the wrong one is in your 914 from POs - then get a proper part # core from someone on here to get rebuilt. IMHO you're better off sticking with the proper one, despite what George said. (IMG:style_emoticons/default/shades.gif) PS that link to EFI info that detox gave you above is an excellent resource! |
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| Bleyseng |
Feb 2 2011, 04:30 PM
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Aircooled Baby! Group: Members Posts: 13,035 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
Huge difference between a 73 2.0l and a 74 2.0L George! No, they won't interchange other than they will plug in.
A 73 2.0l uses a 037 ECU (same as a 1.7L), a 017 CHT (if you can find one) and a 037 MPS... A 74 2.0L uses a 044 ECU, 012 CHT and a 043 MPS... Mixing and matching will result is a barely running 914. |
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| orange914 |
Feb 2 2011, 06:19 PM
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#6
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http://5starmediaworks.com/index.html Group: Members Posts: 3,371 Joined: 26-March 05 From: Ceres, California Member No.: 3,818 Region Association: Northern California |
becouse the 73 ecu was used for both the 2.0 and 1.7, it was "scabbed" together to run the newly added 2.0 with a different CHT(017) and an inline resister to trick it to fit the modified needs. i may be wrong but if you use a 74 ecu you will need to match the CHT and MPS. i dont think you'll need anything else... anyone?
check here http://members.rennlist.com/pbanders/DjetParts.htm not to hy jack but, why are the 73-74 green 2.0 injectors a different # than green 2.0 75-76? |
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