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Old 12-15-2004, 02:03 PM   #76
jamesfacts
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^ No,you have a GF4.
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Old 12-15-2004, 02:08 PM   #77
Mechkiller31st
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1998 Impreza Wagon L
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Well according to the list it is both GFC and GF4... im confused which one should i use.
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Old 12-16-2004, 02:21 PM   #78
WRXnEFKT
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Quote:
Originally Posted by Mechkiller31st
Well according to the list it is both GFC and GF4... im confused which one should i use.
Open the driver side door on your car and look for the VIN # Plate (Just follow the "B" pillar down until you see it). Your specific vehicle code should be within the VIN #.
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Old 12-17-2004, 07:48 PM   #79
CirrusWRX
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Very anxious to hear how the EJ18 heads on an EJ22 end up performing. Are the EJ18 SOHC I assume? What ECU are you going to run them with?
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Old 12-17-2004, 07:57 PM   #80
Matt Monson
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Can we keep this thread on topic and not digress into the [email protected] olympics of chassis codes.

By my calculations the EJ25 heads would take an EJ22E down to 8.6:1. And to answer the question that I didn't see answered, the point of this is lower compression is safer to boost the engine with. It is more detonation resistant and less likely to blow a head gasket or pop a piston. Different EJ series engines have different volume cylinder head chambers. This is why putting an EJ22 head on to an EJ25 block breaks 11:1cr while putting EJ25 heads on an EJ22 block hits mid 8's. The Ej25 heads have more cylinder volume...
Do a search for EJ calcs...
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Old 12-18-2004, 12:58 PM   #81
Mechkiller31st
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First. Sorry bout the whole chassis code thing Im just trying to learn. And second... So by putting EJ25 Heads on my EJ22 it would be make it better for boost. Is this what I am understanding.
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Old 12-18-2004, 09:50 PM   #82
dexterous
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Default 2.2 to 2.5 with the same ECU?

I may be (most likely) wrong but I thought that I read a few months ago about a few people doing 2.2 to 2.5 swaps and keeping the 2.2 ECU. Then again, maybe they were swapping from a 1.8 to a 2.2 but I cant remember. If I ever blow up the motor in my L (very unlikely) I think I will swap in a 2.5. My L is just my work beater but it would still be cool to have a faster ride to work. One thing is for sure. It was the best $4000 I ever spent on the WRX. It cut my miles down to 1/5 of normal and made the WRX feel like a Ferrari. Its amazing getting out of a L and getting into a Stage II WRX. Very soon it will be even more amazing to get out of a L and get into a Stage II STI!
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Old 12-21-2004, 09:17 AM   #83
cjfike
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On the ECU question, I am putting 1.8 heads on my 2.2 to increase the CR. I will continue to use the ECU currently mounted on the car under advice from folks who have done this conversion before.

However, if you were going to put WRX heads on whatever NA block you have, you would use the ECU for the WRX.

From what I have heard and read (same block different heads swaps), the ECU you use has little regard for the block. The heads are the most important factor in the determination process.

You can take 2.5 heads and plop them on your 2.2 and have a nice low CR for your turbo, and boost away (hopefully you have built up the lower half). But I am fairly sure the 2.2 ECU isn't going to play nice anymore. The information from the turbo engine has to different than from same displacement NA.
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Old 12-21-2004, 01:47 PM   #84
CirrusWRX
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Quote:
Originally Posted by cjfike
On the ECU question, I am putting 1.8 heads on my 2.2 to increase the CR. I will continue to use the ECU currently mounted on the car under advice from folks who have done this conversion before.
So you're doing 1.8 heads on a 2.2 block using the stock ECU. What is your target CR - what head gasket are you going with?
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Old 12-24-2004, 12:50 AM   #85
ac30treb
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I might be coming into this thread a little late, but here's my 2 cents.

I bought my OBS in '98 and have the following CHEAP upgrades:
WRX (stock) rear sway bar.
WRX (stock) calipers.
WRX (stock) wheels.
'00 RS (stock) suspension.
Powerslot rotors.
Falken ziex 512 tires.

This doesn't sound like much, but I recently entered a Rally Cross and finished 9th fastest out of about 30 cars. This was my first time racing and beat several tweaked WRX's. My car is not (even close) as fast as a 'rex, but by doing a few cheap upgrades, it handles really good and is a blast to drive.

My official advice. Watch the classifieds on this site. Wait for someone to sell their take-off parts with low miles. Stick them on you're L, and have a blast in the corners. Deal with the 0-60. All the while, saving thousands toward you're WRX in a year-or-so. If you can't afford one, start looking for an early 90's Legacy Turbo for about $3k.
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Old 12-24-2004, 01:10 AM   #86
reddevil
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I supercharged my 90 2.2 wagon. By this spring it will easily beat (or so I hope!) stock WRXs due to the lack of turbo lag. But it is getting kinda exspensive, and thank God I can do most of the work myself.

http://www.vincentfurniture.com/phot...nginebay-1.wmv

and a video of the car in a gravel pit. Sounds pretty good, even over the wind.

httP://vincentfurniture.com/photos/s...ravelpit-1.wmv
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Old 12-24-2004, 04:20 PM   #87
Matt Monson
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'73 914 and 2012 BRZ

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Quote:
Originally Posted by reddevil
I supercharged my 90 2.2 wagon. By this spring it will easily beat (or so I hope!) stock WRXs due to the lack of turbo lag. But it is getting kinda exspensive, and thank God I can do most of the work myself.

http://www.vincentfurniture.com/phot...nginebay-1.wmv

and a video of the car in a gravel pit. Sounds pretty good, even over the wind.

httP://vincentfurniture.com/photos/s...ravelpit-1.wmv
And thank god you can rebuild a block in 4 hours...
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Old 12-29-2004, 01:53 PM   #88
WRXnEFKT
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Quote:
Originally Posted by ac30treb
I might be coming into this thread a little late, but here's my 2 cents.

I bought my OBS in '98 and have the following CHEAP upgrades:
WRX (stock) rear sway bar.
WRX (stock) calipers.
WRX (stock) wheels.
'00 RS (stock) suspension.
Powerslot rotors.
Falken ziex 512 tires.

This doesn't sound like much, but I recently entered a Rally Cross and finished 9th fastest out of about 30 cars. This was my first time racing and beat several tweaked WRX's. My car is not (even close) as fast as a 'rex, but by doing a few cheap upgrades, it handles really good and is a blast to drive.

My official advice. Watch the classifieds on this site. Wait for someone to sell their take-off parts with low miles. Stick them on you're L, and have a blast in the corners. Deal with the 0-60. All the while, saving thousands toward you're WRX in a year-or-so. If you can't afford one, start looking for an early 90's Legacy Turbo for about $3k.
I've pretty much gone the same route with the exception of brake upgrades which I definitely plan on doing and I'm quite happy at the moment also. I've got a couple friends who have hot motors in their project cars who'll smoke me in a straight line anytime but when it comes to outright handling they're both very humbled by a 135hp grocery getter. The look of frustration on their face is worth it all. I think people have concentrated on their pursuit of power for so long that they forget the Impreza's handling capabilities. Power is a good thing but if you can't control it then it's worthless.
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