Hyundai Forum: Hyundai Performance Forum banner


11945 Views 7 Replies 5 Participants Last post by  geezer101
Hey everyone, I just aquired a 2003 Elantra with a bad engine and I am going to swap it out, my question is how can I tell if it is a CVVT engine or not? The parts supplier ask me that question when I call looking for an engine. Could somebody please tell me in detail, include pictures if possible on how I could go about finding out if my car has CVVT?

Its real confusing because they say the have 20 motors for the 2001 and 2002 elantra non-CVVT and the have a lot of motors for the 2003 CVVT but only have one motor for the 2003 non-CVVT, I thought the non-CVVT motor from the 2001 and 2002 would fit.

1 - 2 of 8 Posts
either motor will work. If your 03 has cvvt (which is possible but quite rare) you will see a sensor on the drivers side of the head on the front corner. you can putt a cvvt motor in there and just not hook up the cvvt sensor and it will work fine and dandy.
It 'might' run, but it will be garbage. Disabling the CVVT function will nerf the power delivery which is the whole point of CVVT... The ECU's have different input parameters and there's a good chance the Beta I G4GF ECU will not run the CVVT G4GC Beta II
*edit - a theory. Input voltage to a CVVT solenoid is 10.0 to 12.0v. Would it be possible to run a separate input voltage source to actuate the CVVT and get it to run in a swap? With the CVVT disabled, I think the cam sensor isn't getting a correctly timed trigger and is the reason why this swap is exhibiting a no start/run problem. There are a number of systems that operate the CVVT like oil pressure, engine temperature and a detected battery voltage - (link is to Hyundais' CVVT patent)
1 - 2 of 8 Posts