Bariki Posted September 17, 2020 Share Posted September 17, 2020 (edited) My 2004 JDM B4 GT with manual transmission snapped its timing belt. I now need a new engine (or at least a head?). Can I use an engine from an automatic in my manual car? The automatics come with EJ20Xs while manuals come with EJ20Ys, but I have no idea what the difference is besides the turbo, ECU, and possibly the cams. Could I take a used head from another engine and swap it directly? What are the odds the pistons and cylinders aren't damaged? I am pretty sure that 2006+ engines are actually quite different and won't work. Edited September 17, 2020 by Bariki Link to comment Share on other sites More sharing options...
subaru-tech Posted September 19, 2020 Share Posted September 19, 2020 Generally the auto and manual engines are the same. The only difference is the flywheel/flex plate. You can put an auto engine in a manual car, just have to put the fly wheel and clutch on Link to comment Share on other sites More sharing options...
Max Capacity Posted September 19, 2020 Share Posted September 19, 2020 You will have to make sure the timing belt guides are in place if you have a manual tranny if the engine came out of a automatic tranny car. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
robertsamuelwattersjr Posted September 20, 2020 Share Posted September 20, 2020 I had a timing belt snap that is what saved the motor Sent from my SM-G965U using Tapatalk Link to comment Share on other sites More sharing options...
Bariki Posted September 20, 2020 Author Share Posted September 20, 2020 The JDM automatic and manual engines are NOT the same. Please only answer questions you actually know the answer to. Link to comment Share on other sites More sharing options...
Bariki Posted September 20, 2020 Author Share Posted September 20, 2020 You will have to make sure the timing belt guides are in place if you have a manual tranny if the engine came out of a automatic tranny car. What does that mean? Link to comment Share on other sites More sharing options...
Bariki Posted September 20, 2020 Author Share Posted September 20, 2020 I had a timing belt snap that is what saved the motor Sent from my SM-G965U using Tapatalk How in the world could a snapped timing belt save an interference engine? Link to comment Share on other sites More sharing options...
DaveWaters Posted September 20, 2020 Share Posted September 20, 2020 Here let me do it for you.... https://www.google.com/search?q=differences+between+ej20y+and+ej20x&ie=UTF-8&oe=UTF-8&hl=en-us&client=safari#sbfbu=1&pi=differences%20between%20ej20y%20and%20ej20x Link to comment Share on other sites More sharing options...
Marvick08GT Posted September 20, 2020 Share Posted September 20, 2020 Delete Link to comment Share on other sites More sharing options...
Max Capacity Posted September 20, 2020 Share Posted September 20, 2020 What does that mean? Here in the US, the engines that have a manual transmission have guide plates on the corners of the timing belt cover, cars that have automatic transmissions don't have them. If you put a engine without the guides in front of a manual tranny, the belt can get slack if you push in the clutch from high rpm to let the engine go to idle. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
Bariki Posted September 21, 2020 Author Share Posted September 21, 2020 Here in the US, the engines that have a manual transmission have guide plates on the corners of the timing belt cover, cars that have automatic transmissions don't have them. If you put a engine without the guides in front of a manual tranny, the belt can get slack if you push in the clutch from high rpm to let the engine go to idle. Oh, OK. Thanks. Link to comment Share on other sites More sharing options...
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