NicksLegacy Posted January 26, 2016 Share Posted January 26, 2016 I got a new short block from an 09 2.5i SOHC and was told I can put my SOHC EJ253 heads on it. Upon attempting today I realized there isn't enough Piston to valve clearance. Can I swap in EJ251 pistons in? The reason I ask, is that the 253 pistons have protruding "guides" for the valve, while the 251 has indents in the pistons. Thanks for any help! Link to comment Share on other sites More sharing options...
Max Capacity Posted January 28, 2016 Share Posted January 28, 2016 Why do you want to do this without knowing what your doing ? What's wrong with the heads that came off the car ? Are you working with a race shop that has done this before ? Why didn't you get the short block that goes with your heads ? You may have better luck getting the answers your looking for from a non-Legacy GT forum. Sorry. Hey I can give you a link to the service manuals. http://people.csail.mit.edu/ilh/vacation/ 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...
NicksLegacy Posted January 29, 2016 Author Share Posted January 29, 2016 1. I know what I'm doing just wanted to see if anyone else has done it. 2. The heads that came off my car are fine, but the piston heads hit the valves due to the new piston heads and valve reflief being taller than my current Pistons. 3. I'm a high performance tech student and have the tools and resources necessary 4. I was told that I could just put my heads and intake on and make it work. So far so good. I've got the Pistons out of the new block and measured. After doing further research I have found someone else who has done it. Next is cylinder deglazing and new Pistons. I'll keep the thread updated Link to comment Share on other sites More sharing options...
Max Capacity Posted January 29, 2016 Share Posted January 29, 2016 Good Luck with your project. Not many people spend time trying to get more HP out of those engines. We're all about turbo Legacy's here. We'll be interesting to see what you can do with this set up. 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...
NicksLegacy Posted January 29, 2016 Author Share Posted January 29, 2016 Thank you! You'd actually be happy to hear I'm not building for power lol. I'm just building to get my car back up and running again. With the 09 253 donor block, I figured I'd try to make it work. Link to comment Share on other sites More sharing options...
Max Capacity Posted January 29, 2016 Share Posted January 29, 2016 You could always machine off the top of the pistons to make them work... 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...
NicksLegacy Posted January 29, 2016 Author Share Posted January 29, 2016 I'm calling that plan B Link to comment Share on other sites More sharing options...
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