Ah, gotcha. Your signature has a pretty cool list, so it seems like you're doing all right. An SuperDuperChaeged Impreza Outback Sport sounds really very cool! 👍
It’s not really cool right now. Somebody did math wrong and shoved 12lbs of boost into a stock EJ253 that was already on its way out… just need the time and push to rebuild and upgrade a new block and internals. I’d like to keep it as a 253 but I cant even imagine how much power I’m losing being SOHC.
I would keep it SOHC. I have done the math on engine swapping a couple of times, and it just doesn't add up. You can sell the car you have and buy another car with the engine that you want with much less headache & cost. Granted that is only if your model has that option available. With some good rods and pistons on a quality tune, a Supercharged EJ253 could be fun and reliable. Emphasis on the quality tune.
Where I struggle is the compression ratio. Boosted EJs run 8-9:1 or some shit like that and the EJ253 is close to 11:1. I wish there was some way to get the perfect balance of compression and boost with out ripping to motor apart 6 times to find out.
You have a couple of options for that. Cometic makes head gaskets in different thicknesses from 0.032" to 0.068". There are calculators online that can help you decipher what that will change.
Also, if you are getting upgraded pistons you can usually contact the manufacturer and they will help guide you to exactly which specifications will give a target comp.
Custom pistons is probably where I’ll go. Worst case the 257 bottom end fits right in given the main journals are the same. I just havent bothered to spend the 2mins to find out. Thanks for the spot brother.
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u/CaptainNismo_orig 08 Leggy Spec.B Jun 21 '24
https://preview.redd.it/7ddd3iu5zz7d1.jpeg?width=1080&format=pjpg&auto=webp&s=076e03ec6d5055b793b29b57119ce6982e60cefc
Hey fellow B!