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Old 06-12-2008, 09:04 PM   #1
shanks9sti
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Default stock STi block

does anyone know how much it would cost to rebuild the stock ej25? i lost compression in the third cylinder and i just wasnt sure how much it would cost, or how much i could even sell the block for...
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Old 06-13-2008, 03:29 PM   #2
bluescoobywagon
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That's a hard one to guess, because there's no way of knowing what the damage is until you take it apart. It could be as simple as new pistons and bearings, or it may have a borked cylinder wall.
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Old 06-13-2008, 05:03 PM   #3
jbwrx
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If it turns out that you cracked a piston, don't rebuild with stock ones. You can get forged pistons for a little more money and the block will be a lot stronger. If it is just the piston expect a cost somewhere between $4000-$5500.
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Old 06-13-2008, 05:22 PM   #4
reddevil
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Pistons and rings $600
new bearings $150 (if needed)
Honing $50-100 (if needed)
Crank grind $80-150 (if needed)
Various seals and gaskets $250


your labour

Thats pretty much it.
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Old 06-13-2008, 06:11 PM   #5
bluescoobywagon
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During a rebuild you should also change the timing belt, water pump, t-stat, and oil pump. The price will vary depending on how much you do yourself. If you don't do any of the work, jbwrx is probably pretty close.
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Old 06-13-2008, 06:30 PM   #6
icslowmo
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$4k-5.5K is way too much. Just buy a new Sti short block from Subaru ~$1,900 and new forged pistons $450-550. Have bores checked and sized for pistons (like reddevil said) $50-150. Total ~$2,700 and you should be good for at least 400whp..
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Old 06-13-2008, 06:44 PM   #7
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Quote:
Originally Posted by icslowmo View Post
$4k-5.5K is way too much. Just buy a new Sti short block from Subaru ~$1,900 and new forged pistons $450-550. Have bores checked and sized for pistons (like reddevil said) $50-150. Total ~$2,700 and you should be good for at least 400whp..
That's at a minimum if you're going to use drop in pistons which I don't recommend. If you're going to bore and hone you have to split the case and that adds at least $250 for new gaskets and seals + labor if you have a shop do it. That takes you to a little over 3k just for parts and machine work and if you have a shop do all the work at a minimum you'll pay $2K in labor so $5K
+ was about right if you don't plan on doing all the work yourself.
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Old 06-13-2008, 06:50 PM   #8
shanks9sti
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alright well heres the deal, its not something i was really looking to rebuild, i already sold my sti that i had put a cobb short block into, i just have the block lying around and wanted to get rid of it pretty much. but my friend offered me $100 for it which seems kind of ridiculous to let it go for that, i know it needs work but im not just going to give it away. i know theres nothing wrong with the pistons, but the guy who took it apart said honing out the cylinders would be enough, but then it needs oversized pistons right? anyways i basically just need to get rid of it, but its kind of hard to do when im not sure how much work it needs, if anyone is interested let me know
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Old 06-13-2008, 07:50 PM   #9
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Quote:
Originally Posted by icslowmo View Post
$4k-5.5K is way too much. Just buy a new Sti short block from Subaru ~$1,900 and new forged pistons $450-550. Have bores checked and sized for pistons (like reddevil said) $50-150. Total ~$2,700 and you should be good for at least 400whp..
Considering I am on my 3rd motor, the estimate is pretty accurate.
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Old 06-13-2008, 08:01 PM   #10
shanks9sti
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hm...ok
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Old 06-14-2008, 02:35 AM   #11
Jhovany
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Yeah just buy a whole new STI shortblock (just like mentioned above ~1900) EVERYTHING should be around $4000 area if you are going to have a performance shop do it all for you!!!! And I do mean EVERYTHING
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Old 06-14-2008, 07:13 AM   #12
bluescoobywagon
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If the cylinders, crank, and rods are intact, then $100 is a stupid low price. At a guess, you could probably sell the parts for $600-700.
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Old 06-14-2008, 09:51 AM   #13
shanks9sti
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alright i'll probably just put it up on ebay then
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