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914World.com _ 914World Garage _ what are the differences between a 73 and 74 2.0 engine

Posted by: crxnug May 17 2010, 06:16 PM

are there any differences between a 1973 and 74 2.0 engine,? are parts interchangeable, are there differences in the fuel injection? and info would be much appreciated

Posted by: McMark May 17 2010, 06:20 PM

Not much. Are you looking for information regarding running a stock motor? Or in terms of a rebuild core?

For a rebuild core, they are the same.

Posted by: Tom_T May 17 2010, 06:31 PM

QUOTE(crxnug @ May 17 2010, 05:16 PM)

are there any differences between a 1973 and 74 2.0 engine,? are parts interchangeable, are there differences in the fuel injection? and info would be much appreciated

Mostly differences at the earlier MPS, CHT, ECU & other EFI components - otherwise they're the same basic GA engine 73 & 74, as McMark said. So you could transplant the appropriate MY's D-jet set-up if you're looking for a new engine/core, but save the old one if it's a matching number original engine to the car!

Posted by: JRust May 17 2010, 07:41 PM

Yeah the same but for the Fuel Injection. You don't want to mix the FI between the years. Also don't mix the wiring between them. Dont ask me how I know

Posted by: underthetire May 17 2010, 07:43 PM

one year

Posted by: Jeff Bowlsby May 17 2010, 08:12 PM

Then '74 is by far the better engine...:tongue in cheek:

Actually there are few subtle and meaningless differences:

The 74 has:

1 year less wear...
Single port throttle body, no throttle shaft spring
Charcoal canister relocated to the engine bay (@ mid-year 74)
Some, not all, FI components were changed for the 74 model as mentioned above

Thaz all...

Posted by: detoxcowboy May 17 2010, 08:54 PM

QUOTE(crxnug @ May 17 2010, 05:16 PM)

are there any differences between a 1973 and 74 2.0 engine,? are parts interchangeable, are there differences in the fuel injection? and info would be much appreciated

For a more detailed of what changed and what is inter changeable and what is preferd.. link below

http://members.rennlist.com/pbanders/DJetParts.htm

The main thing is if your using the 037 ecu from '73 then you must use the corresponding cht w/ resistor and mps.. that really is the only major rule..
change the ecu to 74-76 and the fi components are alot more flexible.. 74 stock is a good bet as then you can go alot of ways when in need for a part. anything more than that will just confuse your question.. read that link it will be your best guide..