View Full Version : USDM Sti 2.5 short block kit- who from


Ticky
12-02-2003, 03:22 PM
After trying a few searches i managed to find one supplier for the above kit for around $1800, but lost the link.
Can someone please recommend any suppliers & can that price be beat.
Pre-assembled short block kit- USDM Sti 2.5
Thanks Ticky

BongMan
12-04-2003, 12:40 AM
I know i-speed was doing a short block into a WRX conversion. If you only need the bottom/middle end you might want talk to them.

i-speedusa.com

hope this helps.

Ticky
12-04-2003, 01:30 PM
Thanks BongMan will have a look.

Pi7467mp
12-07-2003, 10:30 AM
isrperformance.com
talk to Pam she got me the sti shortblock assembly for 1460 shipped!!!

Ticky
12-07-2003, 04:09 PM
Thanks again, getting cheaper.

Unsane02WRX
12-13-2003, 11:51 AM
Where else can you find the USDM 2.5 Sti engine? And does anyone know a good shop in the Virginia area that could swap it into an '02 WRX?

Thanks!

Pi7467mp
12-13-2003, 03:56 PM
Hey man... I Just finished swapping an sti block into my 2.5RS... If you aren't afraid of taking your motor out (which is not a big deal at all) you can do it yourself, and save yourself thousands .... The only problem I ran into was, I forgot to plug in my water temp sensor so I threw a CEL... but I figured it out in a few minutes, and everything works out flawlessley.. My car runs great and sounds awesome.. Let me know if you have any questions I can answer for you.

Kevin M
12-14-2003, 01:55 AM
www.subaruwrxparts.com

$1575 for the short block with gaskets shipped anywhere in the 48 states.

Pi7467mp
12-14-2003, 08:33 AM
I know this is a little off subject....kinda... but I just finished swapping out my 2.5rs block yesterday with a USDM sti shortblock... Everything went smmothly except for the blots on the lower right side of my bell housing.. The piping from my turbo was right ion the way so i had to drop my turbo, in order to get to the bolts.. not a big deal but time consuming.. The only problem I ran intop was the parallel fuel rail system... The explanation on I-club, and on ravensblade-impreza was a little off. So I plan on adding better pictures, and better explanations, and more steps so no one is left in the darkk. The other problemI ran into was when I 1st started my car after the install... My fans wouldn't turn off, and my temp guage wasn't working.... 1st thought was water temp sensor, and water temp guage sensor.. sure enough there it was unplugged.. put tat bad boy back in and it ran awesome.. no problems what so ever.. I have a little power steering pump leak, but other than that ( I don't care about power steering, cuz it has nothing to do with going fast) awesome.. it acts like it wants to just take off!!! oh and back to the subject.... 1460 shipped from isrperformance.com ask for pam.

Unsane02WRX
12-15-2003, 07:52 AM
Well, in all honesty, I'd like to do the swap myself, but my main concern is the timeframe. About how long did it take for the swap? And also, is there anywhere I can get the whole she-bang? I'm talking a complete block with everything. The engine on my WRX ate itself, and I don't see any parts that are really usable in a swap.:( Meatl filings in pretty much everything. And kinda off the subject here, but if I swap to the EJ-25 Turbo, can the HKS F-Con V Pro handle it? Also, anyone in the Northern VA area know of a good body shop?

Unsane02WRX
12-16-2003, 11:26 AM
Also, how much does a USDM Sti tranny run for? And has anyone tried to take the DCCD from an Sti, and adapt it to an '02 or '03 WRX? Anybody think it's worth it?

PulpFiction
12-16-2003, 12:29 PM
I have an STI (and had a WRX) and to me the DCCD is little more than a toy than a serious performance part. I don't rally the car, as most of us don't, and that is where I hear you might see some real benefit. If it were a very low cost and simple option I'd say do it just to be unique. I would imagine it wouldn't be a simple upgrade. You probably need an STI wiring harness (or a part of one) and who knows which computer controls it (the main CPU or another small unit somewhere). Otherwise the 6sp trans is what you really want. So far I haven't heard of anybody killing one so the increased strength makes it good upgrade. The 6sp feels like it is a much closer ratio unit than the 5sp (my opinion from feel, I didn't look at the specs) so you can be off a gear in a turn and not have to downshift like you did in the WRX.

Good luck!

Unsane02WRX
12-16-2003, 03:04 PM
Thanks, Man.

I didn't think it would be a cheap mod, but wanted to get an opinion from someone, and see if it could even be done. I'm already leaning towards the 6sp, as I want to extract every single ounce of power and torque from the engine. And really, I'm just trying to get a feel for where I should go with this car during the rebuild. I know an engine swap isn't cheap, but if I've already got to replace the motor, why not go with a better one, know what I mean?

Also, being a former Honda-boy, I've done a few engine swaps into Civics, but want to know if you would say swapping the STi engine for the WRX engine is any more complex. And obviously, the factory service manual for the WRX and STi engines are a must, right? Or has anyone posted detailed instructions on the swap on the web somewhere?

1fastGC
12-20-2003, 01:05 PM
You can order the USDM 2.5 STi shortblock from Mike Shaw Subaru or Gruppe-S.

Silver arrow
12-23-2003, 08:00 PM
Originally posted by Pi7467mp
Hey man... I Just finished swapping an sti block into my 2.5RS... If you aren't afraid of taking your motor out (which is not a big deal at all) you can do it yourself, and save yourself thousands .... The only problem I ran into was, I forgot to plug in my water temp sensor so I threw a CEL... but I figured it out in a few minutes, and everything works out flawlessley.. My car runs great and sounds awesome.. Let me know if you have any questions I can answer for you.

What heads are you using? Are you running a turbo?

ImprezaRSX
12-25-2003, 01:27 PM
Regular EJ25 N/A block........ Free for RS owners,
Darton Sleeves.................. 85 x4
Machine work...................... 350
JE Turbo Pistons................... 400
Shot peen and prep rods......200
OR Aftermarket Rods.............700

Total.....................................1790 with aftermarket rods
....................1290 with prepped rods.

And you have something that will be much stronger than an STi shortblock for about the same price.

Add 150 bucks for balancing the whole assembly to 1/4 gram and it'll turn higher RPM's than the STi block with a greater safety margin.

Moral of the story is that you are wasting your money if you buy the STi block.

Also, Darton has bigger sleeves for the EJ20 and EJ25 for increased displacement. However pistons for that will cost about 650 bucks.

Ticky
12-25-2003, 02:13 PM
Is the EJ25 N/A block an open deck block or closed. How much more rpm can be acheived with the above choice & parts.

ImprezaRSX
12-26-2003, 02:11 AM
NA block is open deck, but who cares.
The Darton sleeves are so stiff it doesn't matter. YOu won't have any cylinder wall deflection.
Stock cylinder walls are 30,000psi tensile strength
Darton sleeves are 130,000 psi tensile strength.

That's enough strength for anything that won't lift the heads.
I'm running 350HP on stock NA block

Silver arrow
12-26-2003, 02:58 PM
Originally posted by ImprezaRSX
Regular EJ25 N/A block........ Free for RS owners,
Darton Sleeves.................. 85 x4
Machine work...................... 350
JE Turbo Pistons................... 400
Shot peen and prep rods......200
OR Aftermarket Rods.............700

Total.....................................1790 with aftermarket rods
....................1290 with prepped rods.

And you have something that will be much stronger than an STi shortblock for about the same price.

Add 150 bucks for balancing the whole assembly to 1/4 gram and it'll turn higher RPM's than the STi block with a greater safety margin.

Moral of the story is that you are wasting your money if you buy the STi block.

Also, Darton has bigger sleeves for the EJ20 and EJ25 for increased displacement. However pistons for that will cost about 650 bucks.

Do they have a web site?

ImprezaRSX
12-27-2003, 12:51 PM
http://www.dartonsleeves.com

Only crappy thing is that the wait is 4-6 weeks for your sleeves.

Any good machine shop can install them.
Any good machine shop can shot peen the factory rods
Any good machine shop can balance an entire rotating assembly.

Kevin M
12-29-2003, 12:57 AM
Any updates on who has EJ257 shortblocks in stock? Exeter is out, but I guess Mike Shaw Subaru has some. Anybody else?

Unsane02WRX
03-23-2004, 10:43 AM
I know this is kinda off the topic here, but does anyone know if the EJ-25T crate motor is still available, and if so who has got it? I know subaruwrxparts.com had it, but it's not listed on the website anymore. Any help would be appreciated.

GOKU 4
03-24-2004, 06:47 AM
I think I was one of the first who had a block. From the dealer, it cost me under $1k brand new and $70 for the 2.5l STi head gaskets.

Kevin M
03-24-2004, 10:12 PM
Originally posted by GOKU 4
I think I was one of the first who had a block. From the dealer, it cost me under $1k brand new and $70 for the 2.5l STi head gaskets.

I have a bit of trouble believing that, since dealer cost is over $1250.

Anyways, there are currently several dealers with EJ257s in stock. Search the vendor classifieds here and on nasioc.

wannaberacing
03-27-2004, 09:56 PM
I would stick with the wrx 5 speed and drop a better set of gears in it. six speed is fairley useless in first and second after your get up to 350whp.

Kevin M
03-27-2004, 10:01 PM
6MT>5MT. The differentials are better, the case is stronger, the gears are stronger, the synchros are WAY better, shifting is faster and smoother... the only reason to go with a 5 speed or gear set is because you can't or won't spend the extra cash for the 6MT.

wannaberacing
03-27-2004, 10:13 PM
I disagree, five speed with aftermarket gears and syncros is just as sound as a six. A 2.5l short block with a turbo that can produce 350whp does not need a sixth gear to stay in the power band. While you are shifting I'll be passing you.:D

Kevin M
03-27-2004, 10:27 PM
Regardless of what gears you put in, you'll still get case flex. More importantly, you'll have inferior synchros and less longevity. As for gear ratios, the 6MT ratios are quite similar to the 5MT ratios of aftermarket gear sets. Diff ratios are the same. Plus, while you're repairing/replacing your 5 speed again, I'll be at another track day. ;)

wannaberacing
03-27-2004, 11:28 PM
Hope to see you there.:)

Magish
03-27-2004, 11:36 PM
Call mike shaw subaru (flat4engineering) last time I checked in they had a ton ready.

Price on them:$1370 plus $65 shipping if you are outide of CO.

Hope this helps

Unsane02WRX
05-06-2004, 03:36 PM
Actually, what I'm looking for is the complete assembly. I know, it's the lazy way out, by not building the motor myself, but everything I see says building up the short block is a little more expensive than the complete long block. I know I'd have the benefit of knowing EXACTLY what has gone into the motor, and how far I can push those parts, but I'd be tempted to blow my whole wad on really top shelf components for the initial build, and leave me nothing for upgrading. Again, I know it's off the topic, but please help, the car's useless with a blown EJ20T

wannaberacing
05-06-2004, 05:35 PM
PM me I know where you can get a 2.5l long block cheap.

Kevin M
05-07-2004, 01:30 AM
Actually, what I'm looking for is the complete assembly. I know, it's the lazy way out, by not building the motor myself, but everything I see says building up the short block is a little more expensive than the complete long block. I know I'd have the benefit of knowing EXACTLY what has gone into the motor, and how far I can push those parts, but I'd be tempted to blow my whole wad on really top shelf components for the initial build, and leave me nothing for upgrading. Again, I know it's off the topic, but please help, the car's useless with a blown EJ20T

www.subaruwrxparts.com usually has them for a fair price. A 'long block' is a complete motor except for turbo and intercooler. IIRC they were going for $5500, while the short blocks were going for $1375.

Unsane02WRX
05-07-2004, 01:04 PM
I've checked subaruwrxparts.com , and they don't have them listed on the website anymore. Any other places that you guys know of? And I know the long block is expensive, but I've budgeted a good amount of money for this. I just really want a stable, reliable, factory starting point for future mods. I mean, why not go whole hog when finishing a rebuild? This is the last thing left before the car is road worthy again.

Kevin M
05-07-2004, 05:08 PM
You're basically gonna just have to hit the phones. Many dealers will get long and shortblocks, but they can't "order" them- they just show up. So you'll have to hunt one down by calling individual dealers. I'd start by calling the ones with websites that are used to selling online and shipping parts.

Unsane02WRX
05-13-2004, 07:14 AM
Thanks....I'm gonna try one of the 6 Subaru dealers within a 50 mile radius of where I live, and see if I can yank a long block off them.