Subaru Enthusiasts Car Club of the Sierras - View Single Post

sperry · 2011-03-17, 03:56 PM

Top-feeds are cheaper, and AFAIK, it's easier to get larger sizes than you can get for the side-feeds.

To convert, you would definitely need new rails, but you would also have to get a solution for the fact that the AVCS heads are in the way of the top feed injectors on the early STis (which is the whole reason the STi uses side-feeds to begin with). I'm not sure if there are other concerns, like the injector wiring or anything, but there may be.

On my car, I've got '04 STi heads and top-feeds, but I'm running a Perrin fuel rail which allows the rotating of two of my injectors by 90 degrees that gets them out of the way of the AVCS solenoids, and everything else on the car is '02 WRX.

2011-03-17, 03:56 PM	#3
sperry The Doink Real Name: Scott Join Date: Nov 2002 Location: Portland, OR Posts: 20,335 Car: '09 OBXT, '02 WRX, '96 Miata Class: PDX/TT-6 The way out is through	Top-feeds are cheaper, and AFAIK, it's easier to get larger sizes than you can get for the side-feeds. To convert, you would definitely need new rails, but you would also have to get a solution for the fact that the AVCS heads are in the way of the top feed injectors on the early STis (which is the whole reason the STi uses side-feeds to begin with). I'm not sure if there are other concerns, like the injector wiring or anything, but there may be. On my car, I've got '04 STi heads and top-feeds, but I'm running a Perrin fuel rail which allows the rotating of two of my injectors by 90 degrees that gets them out of the way of the AVCS solenoids, and everything else on the car is '02 WRX. __________________ Is you is, or is you ain't, my con-stit-u-ints?