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View Full Version : Engine Building Tips From the Pros - Are EJ-Series Engines as Weak as Tuners Claim?



LaszloT
04-22-2013, 09:29 PM
The Truth Behind The Subaru EJ-Series Engines - Tech-Knowledge

Read more: http://www.importtuner.com/tech/impp_1103_subaru_ej_series_engine_tech/viewall.html#ixzz2RFHfz3XT

If there's some magical formula on how to properly build an EJ engine, chances are our top tuners have found it! Follow along as they offer a simple how-to guide to help point you in the right direction whether you're planing on building a 300 whp, 400 whp, 500 whp, or 500+ whp engine.

Quirt Crawford Of Crawford Performance

300 whp: To obtain this horsepower level, the EJ motor only requires an upgraded intercooler, larger sized fuel injectors, and a retune of the ECU-no internal engine modifications are required. We highly recommend the use of an air/oil separator (AOS) on any turbocharged EJ motor to eliminate oil from coating both the intake tract and the inside of the intercooler, which causes a reduction in cooling efficiency that can cause detonation.


Might someone post a picture and link to this air/oil separator (AOS) mentioned above, as I'd like to look into it?

JoeT
04-22-2013, 09:52 PM
http://store.crawfordperformance.com/system/uploads/637.jpg

JoeT
04-22-2013, 09:53 PM
That's just one of many examples of Air Oil separators.

LaszloT
04-24-2013, 10:36 AM
Does SteveD, JoeT or Brandon run one of these Air/Oil separators?

STeveD
04-24-2013, 10:13 PM
I run a custom Canjam system that would be excessive for your needs. The trick is to get the oil back in to the block under pressure, so a gravity setup and waiting for vacuum is an option for short or light tracks. Joe has a custom system by Yoshio.