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Old 01-10-2006, 02:23 PM   #1
jaltman
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Default [B]Want to switch to a 2.5 sti short block from blown stck 2.0[/B]

I Currently have a blown stock 04 Wrx (rod bearing) and am hopefully now taking the opportunity in having to rip the motor apart to upgrade to an 2.5 sti short block. But before I make this decision apparently its not as simple as taking a 2.5 block and throwing it in there and calling it a day. The only mods that I have done are TB exhaust, uppipe, boost controller and bov. Plan on sticking with the stock turbo for now but would really like to upgrade to 2.5. Any input from people who have done this swap before or know how to achieve this and have the car running right (like tuning needs or mechanical) please post. I'll take all the advise I can get, last thing I want is another thrown rod. Thanx
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Old 01-11-2006, 09:57 AM   #2
jaltman
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bump.
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Old 01-11-2006, 04:05 PM   #3
fastlane
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Old 01-11-2006, 04:07 PM   #4
J-Rex2004
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Old 01-11-2006, 09:01 PM   #5
jaltman
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Thanx, keep the input coming, im soaking it all in, and also if there are any ?'s or concerns on my plans in detail, please post.
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Old 01-11-2006, 09:58 PM   #6
Antonios Kintos
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WRenXHaven
codered
sj1416

Some users to contact I know did this swap

I'm currently having mine done at Rallispec along with a 20G

From what I understand everything bolts right up to the 2.5
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Old 01-12-2006, 12:28 PM   #7
jaltman
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bumpers
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Old 01-13-2006, 09:49 AM   #8
jaltman
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bump.
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Old 01-13-2006, 01:44 PM   #9
sheikthin
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i did it to mine myself....not noticing any issues, everything just bolts right up
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Old 01-14-2006, 12:54 PM   #10
jaltman
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Quote:
Originally Posted by sheikthin
i did it to mine myself....not noticing any issues, everything just bolts right up
When you did the swap, is the only thing you replaced was an sti short block.. because due to financial reasons I'm trying to do without uprading turbo, injectors, tuning etc... if i can help it
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Old 01-14-2006, 01:07 PM   #11
perkowskiforpope
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I did exactly the same thing on my 04 wrx and I upgraded to a 2.5l crawford s2 block. It bolts right up, however you might want to invest in some headstuds and the crawford block came with pistons to match the 2.0 heads. Im pretty sure engine management would be a good idea to make the car run smoothly. If you need any info on any of the specifics drop me a pm.
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Old 01-14-2006, 03:30 PM   #12
sheikthin
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* missdawn = MILF
now with 25% less pistons

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Quote:
Originally Posted by jaltman
When you did the swap, is the only thing you replaced was an sti short block.. because due to financial reasons I'm trying to do without uprading turbo, injectors, tuning etc... if i can help it
i did go with new turbo, injectors, etc. if anything, engine management would be a good idea...just to make sure your investment is safe.
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Old 01-14-2006, 06:52 PM   #13
OppositeLock
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You will also need all of the proper gaskets, oil pan and pickup, as well as the dipstick and tube to properly check the oil levels. Also, what caused the rod bearing failure in your 205, oil starvation or something else? Good luck with the swap.
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Old 01-15-2006, 12:45 PM   #14
jaltman
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Was not oil starvation for sure because there was plenty of oil. I also drove the car very hard and was meticulous about my oil changes. I've this question myself to a couple of friends of mine, one being a subaru master tech and enthusiast and he said that it could have been me running to thick of an oil in my car. Me being a honda guy before purchasing my scooby two years ago always ran 20/50W in the summer time and 10/30W in the winter (if you want to call winter in florida winter) because of it being so hot in florida and never had any probs. But now Im hearing its bad to switch weights for one, and bad to run anything thicker than the 5/30W suggested. Was running synthetic also which is naturally thinner then reg., and I also did wait until about 18,000 miles before switching to synthetic. I never thought that this was going to happen, not yet anyways because for the most part it is stock and i never ran over 16 lbs of boost.
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Old 01-15-2006, 12:46 PM   #15
jaltman
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any input on the oil thing?
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Old 01-16-2006, 10:26 AM   #16
jaltman
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bumpity
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Old 01-19-2006, 04:35 PM   #17
jaltman
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**Update**
Motor was ripped out of the car today, got a hold of a brand new stock 2.0 block for a good price I couldnt pass up, so no 2.5 for me . But while the motor is out it is getting at least a couple goodies which includes an Unorthodox Racing Ultra S pulley kit (undersised crank pulley and alternator and P/S accessory pulleys), Exedy clutch and lightened flywheel and a Greddy timing belt . One thing getting taking off the car is the Man. boost controller, going to wait to get a tune prob. a Cobb AP before boost gets raised on the turbo again. 255 pump is also coming in the near future.
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Old 01-20-2006, 11:39 AM   #18
VWGrk1
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Maybe you can port the heads or something like that?
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