Can I swap an EJ253 for an EJ251?
Yes. But you will have to swap out dbw throttle and components or just swap the heads and run the block. All ej253 blocks are the same.
What did the EJ253 come in?
The EJ253 is another version of the EJ25 which appeared in 1999. This engine is equipped with MAF-sensor and Tumble Generator Valves in the intake manifold. From 2006, this engine was fitted with the i-AVLS system, which changing the intake valve rising.
What’s the difference between the EJ 251 and EJ253?
EJ 251 uses a map sensor to help with the air/fuel setting, whereas the EJ253 uses a Mass Airflow Sensor. If it has a maf then you will find this on the air induction tubing. If a map sensor then this will be located close by /on the inlet manifold. On the speedo side then manufacturers build in a 5% error in the reading.
What’s the difference between STI and EJ255 blocks?
All EJ255 blocks have different heads than that of the STi. There are other differences as well to include the pistons. As of right now I’m not going to go into that and I’m just going to cover the heads. The EJ255’s heads smaller combustion chamber ports and smaller intake ports to my knowledge.
Is the EJ25 swap guide full of garbage?
The EJ25 swap guide! I’ve seen a ton of swap questions lately, more than needed that’s for sure. Most of them contain garbage information that isn’t even half true.
Why does the EJ255 have a higher compression rate?
The EJ255’s heads smaller combustion chamber ports and smaller intake ports to my knowledge. This causes the block to have a slightly higher compression than the EJ257’s and actually helps to increase spool time.
The EJ25 swap guide! I’ve seen a ton of swap questions lately, more than needed that’s for sure. Most of them contain garbage information that isn’t even half true.
All EJ255 blocks have different heads than that of the STi. There are other differences as well to include the pistons. As of right now I’m not going to go into that and I’m just going to cover the heads. The EJ255’s heads smaller combustion chamber ports and smaller intake ports to my knowledge.
Which is better for Stage 2 mods EJ 255 or EJ257?
In the thread they actually choose the EJ255 over the EJ257 for stage 2 mods. This is where they actually stop and no further testing went on to my knowledge. This thread was started by Vendor Maxwell Power (Dom as some know).
Is there a thread about revving the ej25x past 7500?
If you skip straight to post #8 (my post) I post 2 threads, one of which references part numbers and the other is just a good read about revving the EJ25x past 7500. It’s a bit long, but very interesting. If you can get past all the BS you’ll see that sponaugle post in this thread as well with a bit of info of his own.