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Old 03-11-2010, 04:18 PM   #1
Boxer4h
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Default Need a ej20

So i had randoms misfires... Turned out to be cylinder 2 is low in compression.. Now, either i rebuild the engine or do a swap.. The engine now has 115,000 miles... AMS quoted me around 6000 to rebuild the engine... thats labor and everything.. But i can do the swap but i need to find a ej20.. Anyone know where to get good ej20 through a dealer, without worrying about buying from a scammer? Thanks guys...
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Old 03-11-2010, 07:30 PM   #2
Weatherby
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If you have to replace the engine with another anyway, take the opportunity to do an EJ257 swap instead of an EJ20.... You should be able to get one from a dealer, if not from Z1 Auto in NY or any number of other sites stock EJ257 short blocks.
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Old 03-11-2010, 08:33 PM   #3
Concillian
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Generally there are two good routes to go when your EJ205 dies if you want a little upgrade:

1) EJ255 OEM shortblock + machine the EJ205 head combustion chambers to match the larger bore.

2) Rebuild EJ205 with a crank from an EJ255/257 for a 2.1 stroker that has a rod:stroke ratio that's a little more torque-ey.

Basically go #1 if you're paying someone to do all the work. A block from Subaru is <$2000. Labor on building a block can easily be half that before you start talking about parts. If someone else is doing the labor, it's almost always cheapest to just buy a brand new OEM block and swap it in. You end up with the limitations of the OEM pistons, but this is an acceptable limitation for most.

#2 is usually cheaper for someone doing their own work. The difference in cost from rebuilding the 2.0 is $350 for a crank and you pay a bit more for the pistons since they usually are made custom. Total is <$600 more than a basic EJ205 rebuild and you get an engine that has more torque than an EJ205, will get slightly better mileage since the rod:stroke ratio change shifts the peak VE a little lower in RPM, and if you have the internals balanced before installing, will handle a 7500-8000 RPM redline.
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Old 03-12-2010, 02:20 AM   #4
ronin_hungary
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6000 USD for a rebuild
For that much you can build a spaceship (including labour).

Stick with 2.0 liter (or 2.2 at the most) if you can resist the cheap prices of 2.5 engines. (Though there are several EJ20 shortblocks out there for around 800 USD price range).

You will not get a better piston than the OEM STI Forged 2.0 liter piston, especially in the price range they are sold at.

But, if you are ready to spend 6000 USD, then go for the Tomei stroker 2.2 CDB setup, arrow conrods and crank...

Cheers,

R.

p.s.: BTW I have cheap spares for EJ20 if you wish...
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Old 03-12-2010, 09:57 AM   #5
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Old 03-13-2010, 11:28 PM   #6
Boxer4h
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So ive brought it down to 3 decisions....
1.)Do the hybrid engine (2.5 block and 2.0 heads) $5000 Parts and labor
2.)Rebuild the engine 2.0 with forged internals and minor head work $4500 Parts and labor
3.)Swap out the block with a stock 2.0 and keep it stock $2500

I wanna try to get max of 350hp but keep it safely driveable... I like to have the power, but I wanna keep the reliability of my rex...
Any suggestions or from experience what will last and feel the best (speed)
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Old 03-14-2010, 09:32 AM   #7
mathroch
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I have a crank and rods from my old JDM STi v7. I also have the block, but machining needs to be done. PM me if your interested.
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Old 03-14-2010, 10:53 AM   #8
maxpowr
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i have a running 2.0 for sale. i have a 2.0 block with crank for sale. there is no replacement for displacement. power is made sooner with the 2.5. if i was rebuilding an engine for a car i was keeping, the upgrade is a no brainer. you already have heads for the hybrid.

may i suggest...

http://www.rallispec.com/prod_block.htm

street spec block...your heads...possibly machined opened up...check your bucket/cam clearences...deck your heads...install...PRO TUNE!

good luck.
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