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Old 08-28-2014, 02:01 PM   #1
yz134mx
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Join Date: Jul 2010
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Location: Hagerstown, MD
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Default Experience with OEM short block?

Time for a new short block in my 07 sti. Misfire in cyl #4, burns oil etc. Just wondering how everyone's luck has been replacing short blocks with OEM. Any further problems, cracked ringlands etc. after the swap?

I've read 07 tunes are notoriously bad so my plan as of now would be to have an AP tune loaded at the time of start up and throughout the life of the engine. At this point my future plans don't go beyond stage 2 and some minor bolt-ons but I want to be sure I will have a reliable engine.

Thanks for any input!
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Old 08-28-2014, 02:39 PM   #2
Uncle Scotty
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oh d0000000000000000d
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Old 08-28-2014, 02:48 PM   #3
Rob_STI_PNW
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Quote:
Originally Posted by Uncle Scotty View Post
oh d0000000000000000d
im surprised you didn't let him have it even more...

I don't see the problem with replacing your stock block with another stock block? You can get these things assembled straight from Subaru, being OEM and all....

I believe 08+ is when the whole ringland failure came up...
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Old 08-28-2014, 03:03 PM   #4
yz134mx
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Default

Quote:
Originally Posted by Rob_STI_PNW View Post
im surprised you didn't let him have it even more...

I don't see the problem with replacing your stock block with another stock block? You can get these things assembled straight from Subaru, being OEM and all....

I believe 08+ is when the whole ringland failure came up...
I don't see any problems either, but everyone and their brother is all "oh get forged internals blah blah blah". I guess my question is, if I get a new OEM short block, what's to stop this from happening again? Will a good tune suffice?

I have done numerous searches and this seems to be a common problem among 04-07 as well. Everyone asks about the problem but I haven't seen much information on their solution and how it worked out in the long term.
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Old 08-28-2014, 04:00 PM   #5
Rob_STI_PNW
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there is a huge article regarding ringland failures due to poor factory tunes for 08+ models

any subbie can have ringland failures with poor POST factory modifications and tunes, but 08+ has the crap factory tune.

their logic with the forged internals is that since the motor is already out, just save yourself the labor of redoing all of it and get forged.

having a oem or forged block wont save you from a ****ty tune or ****ty driver mod....

if you have stock power and you put in a stock block, it should be as reliable as a stock 07, these cars get to 100k-200k with stock power and a little more.

those are also the same people who say when your turbo goes out get a bigger one, without thinking long term, and not EVERYONE and their brother wants a huge or upgraded turbo...
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Old 08-28-2014, 05:28 PM   #6
Razgeiz
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Like others have said nothing, not even if god himself assembled your engine with unicorn tears as oil will save the engine from a crap tune or the idiot behind the wheel.

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Old 08-28-2014, 07:33 PM   #7
ALOKIN
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Buy oem short block, get custom pistons for each bore grade, install said pistons, drink beer.
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Old 08-29-2014, 09:58 AM   #8
yz134mx
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Thanks guys, did a compression test yesterday cylinder 4 was at 0 psi
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