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Old 04-27-2005, 07:32 AM   #1
EcksJay
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Default Quick questions for those that have swapped from a 1.8 to a 2.5.

Would you do it again? What problems did you run into during the swap? How does it perfrom? How much did it cost?
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Old 04-27-2005, 01:49 PM   #2
EcksJay
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I am trying to decide if I want to do a 2.5 swap and call it good, or perhaps wait a bit and spend the big bucks on a WRX swap. (or JDM)
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Old 04-28-2005, 06:54 AM   #3
EcksJay
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No swappers?
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Old 04-28-2005, 11:36 AM   #4
Diz
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I'd do it again because it was quite the learning experience. I've been driving the car on a daily basis since the swap (november-december) and it's a blast to drive.

If you can source inexpensive parts, I say go for it. It's a great way to learn your car. My setup:

* Phase I EJ25 shortblock
* NA EJ22 heads with Delta cams
* Exedy lightened flywheel
* I/H/E
* WRX front brakes, legacy turbo rear disk conversion, SS lines
* KYB AGX/Eibach/Group N strut/spring/mount combo
* WRX rear sway

The car is a fun and easy to drive fast. Best of all, we were able to build the whole thing for under $5000, including the price of the car. Once you get tired of the NA build, you can pull the motor and sell it. Use the $$ to start your turbo build.

My 0.02.
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Old 04-28-2005, 12:12 PM   #5
benjaminetanyahoo
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I may be going along these lines because the 10k just for a clip for a JDM STI engine is just too much right now not only that the WRX drivetrain is pretty hefty. a 2.5 drivetrain in a 93 wagon should be enough for now.

From what I have read, the 2.5 drivetrain is stronger than the WRX, has better ratios and if you choose to do a WRX swap down the road into the existing RS drivetrain it would be even better.

I don't know my exact path and I teter because of cost and all the things going on in my life, but at the end of this summer a different drivetrain will be in my car...
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Old 04-28-2005, 01:18 PM   #6
staticfritz
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wanna buy my 2.5?
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Old 04-28-2005, 01:52 PM   #7
EcksJay
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How much do you want? Mileage? Condition?
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Old 04-28-2005, 01:58 PM   #8
staticfritz
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it's a 2002 phase II ej25 with 52k on the clock. was swapped out, so it's in perfect working order. never had a check engine light or anything, never boosted, nos, etc. never overheated, broken in gently for the first 1.5k and run on 89 octane since ~5k to help avoid a bad gas episode.

I have the complete engine including power steering, a/c and alternator.
I have the complete wiring harness and ecu if interested as well.

i was looking for ~1000, maybe more depending on what you want with it.
(have some pulleys and stuff lying around too)

if you're in dc, you could pick it up fairly easily for far less than it would cost to ship. The engine is in north new jersey right now at the AZP shop.
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Old 04-28-2005, 02:45 PM   #9
Hawk296
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I did the swap, I did it because after resealing the oil pump and crank seal, the cam seals went out, and I was just annoyed.

Ultimate plan was for an EJ20k but I had access to an EJ25 for cheap and decided it would be a good temporary option.

For everything in the car running it was under $500. Running it off teh 1.8ECU is pretty ghetto, but it runs pretty darn good. I mean you simply cannot beat it for the money. Ive had it for close to 50,000 miles in my car, and still running strong. Its been a great CHEAP option for me until I can get the time for the EJ20 swap.

If it is going to be a more long term thing, It might be more worth it to spend more and go a different route.

In my position, I would definatly do it again.
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Old 04-28-2005, 03:47 PM   #10
Scoobie Steve
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Why waste money on a EJ25 swap when a turbo swap is your ultimate goal? If you want to do a EJ25 and thats all then do it right, use the correct ECU for that engine.
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Old 04-30-2005, 12:39 PM   #11
EcksJay
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Quote:
Originally Posted by Scoobie Steve
Why waste money on a EJ25 swap when a turbo swap is your ultimate goal? If you want to do a EJ25 and thats all then do it right, use the correct ECU for that engine.
Yeah, but if I'm going to "do it right", I might as well do a WRX swap. I mean, the biggest problem with the WRX swap is the amount of downtime for the vehicle. Most people can't afford that. (or the cost)
With a 2.5, there is little wiring to do, and it's conceivable to have the car back up and running in less than a day.
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Old 04-30-2005, 03:33 PM   #12
Kostamojen
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2 days
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Old 04-30-2005, 04:14 PM   #13
EcksJay
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2 days....for a 2.5 or a WRX?
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Old 04-30-2005, 10:34 PM   #14
jamesfacts
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Quote:
Originally Posted by Kostamojen
2 days
Cool to see you back, Kosta!

Jay, 2 days is (I'm 90% sure) referring to the 2.5 swap. Here's what I'd do if I were you; swap the 2.5 shortblock in, and leave your 1.8 heads, ECU, intake manifold, etc. This will increase your compression ratio, you will need to run higher-octane gas, but of course, you will also make more power than a complete EJ251 setup.

The real reason why I'd recommend this setup, though, is because it is cheap and easy. With a couple helping hands, you could do a shortblock swap in a day. There's no wiring, little downtime, and the process is well documented on NASIOC. A EJ251 shortblock should run you around $300.... PM me if you're having trouble finding one.

-James
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Old 05-01-2005, 01:01 AM   #15
EcksJay
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Quote:
Originally Posted by americanyouth

Here's what I'd do if I were you; swap the 2.5 shortblock in, and leave your 1.8 heads, ECU, intake manifold, etc. This will increase your compression ratio, you will need to run higher-octane gas, but of course, you will also make more power than a complete EJ251 setup.

The real reason why I'd recommend this setup, though, is because it is cheap and easy. With a couple helping hands, you could do a shortblock swap in a day. There's no wiring, little downtime, and the process is well documented on NASIOC. A EJ251 shortblock should run you around $300.... PM me if you're having trouble finding one.

-James

What sort of power would I be looking at? I'm sure that I could find a shortblock relatively easy. In fact, I found a complete 2001 2.5 engine w/55k for little more than $500. Also, what would my CR be? anything else I should know?
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Old 05-02-2005, 12:08 AM   #16
jamesfacts
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Quote:
Originally Posted by EcksJay
What sort of power would I be looking at? I'm sure that I could find a shortblock relatively easy. In fact, I found a complete 2001 2.5 engine w/55k for little more than $500. Also, what would my CR be? anything else I should know?
I don't know what kind of power that would equal. With 1.75" exhaust (stock 2.5 size) maybe 175 crank? Just throwing a number out there... it will feel peppy for sure.

I wish I knew teh CP ratio.... but I don't know that either. There's some good info in this thread : (http://forums.nasioc.com/forums/show...ion+ratio+ej25), and there are a few people on these boards that have done the swap before. Maybe its posted somewhere in the NA forums. Try PM'ing Matt Monson - I suspect he could tell you the CP ratio too.

As for the motor, thats a good price, I just sold my '98 EJ25 w/ 60k for $500. All you really want, though, is the shortblock - worth maybe $300.

-James
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Old 05-06-2005, 05:47 AM   #17
happyparrot
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I would do it again, but this time it would take me a weekend instead of 2 months.
As far as problems, everything was pretty self explanatory. The only real problem was keeping my mom from seeing me work on the car because ever since the engine fell on me she has been paranoid, plus she wanted to FULL ACCESS to the garage (garage is for men, kitchen is for women!). After that lil* incident though, I've been taking every safety precaution known to man. So if you're going to follow through with this swap never leave the car raised just on a jack with out jack-stands, don't think you're superman and can do everything with out anyones help, don't even chance it.
This was not fun:

Kinda fun...

This made the none fun part worth it:

The most rewarding part of the swap was when every single neighbor who has been secretly spying on your progress comes out to see the car start (or not start) for the very first time.

Last edited by happyparrot; 05-06-2005 at 05:57 AM.
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