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07-26-2006, 07:49 AM | #1 |
Scooby Specialist
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Vehicle:1992 RHD WRX |
EJ22T block with WRX head of Built USDM WRX block
ok...
So should i A: Use the spare EJ22T Block i have sitting in my basement and put my WRX heads on it or B: Spend $1500CND for a WRX block thats been bored 50 over with forged pistons and rods..... with my wrx heads on it im looking to make reliable hp
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07-26-2006, 09:52 AM | #2 |
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Option A, but how used is the EJ22T block? Does it need a rebuild or new internals? Closed deck >>>> open deck any day.
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07-26-2006, 10:11 AM | #3 |
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so does the EJ22T have cooling issues with the WRX heads as it is rumored that water jackets don't line up....?
that would be deciding factor and is what holds me up between a 257 and the 22t... |
07-26-2006, 10:19 AM | #4 |
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My opinion is that the WRX block with full built internals would be very strong. I guess the real deal is what kind of power you want to make. Then look into the cost of building the EJ22T. And you could always sleeve the EJ20.......
That EJ22T's gonna run hotter also. |
07-27-2006, 12:27 AM | #5 | |
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07-27-2006, 12:29 AM | #6 |
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Vehicle:2002 WRX WRB |
I would not say that a wrx block bored at all would be reliable to for lots of power, its already the weakest block out their now thin out the walls...dont know
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07-27-2006, 01:22 AM | #7 | |
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07-27-2006, 04:16 AM | #8 |
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I have a stock WRX radiator now and have been to track days with no problems! Do it! It's a great motor!
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07-27-2006, 10:53 AM | #9 |
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the ej22 is the way to go, and if your really conserned about cooling, just take the stock head gasket and put it on the block to make sure all the water passages into the head line up. if they don't then just break out the drill press and make them. hell you could also use water wetter for like $7.95 at autozone, that will drop the temp a few degrees.
Eric |
10-15-2006, 04:51 PM | #10 |
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I agree with ejsportcom, i don't think the 22 would run too hot, you would have more displacement for more power, a better bore/stroke ratio, an iron block instead of aluminum, i mean, the EJ22t has oil squirters for the backs of the pistons...strongest shortblock subaru ever built and you can't decide between that and the dime a dozen, blow up under anything more than 17 psi EJ205. the reason they made the EJ205 was because they needed a weak motor to put in the wrx's that could only handle limited horsepower levels so that they couldn't run with the STi's. if anything the debate should be between a new USDM EJ257 shortblock, or a JDM EJ207 shortblock, or the EJ22T...if you want strength, the USDM EJ205 just doesnt cut it
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10-15-2006, 05:43 PM | #11 |
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The EJ22T is pretty much indestructable. The problem you will run into with WRX heads is the REALLY LOW compression ratio. Talking with Ron @ Axis back when I had my WRX he said the CR woud be around low to mid 7.x:1. That basically means off boost you will very little power but in turn you can run ALOT more boost.
It might sound good but you will be running a turbo up to around 25-30 psi to make the same power as someone who is running a 8.5:1 CR motor with only 18-21psi. This is only an EXAMPLE, but it gives you an idea of the trade off. You will need to find a turbo that run efficiently in that boost range as well. You can contact Ron @ Axis though and ask him about gaskets that an be used to raise the CR or you may be able to have the heads milled to help raise the CR. -Matt |
10-16-2006, 12:24 AM | #12 |
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If you intend to use the EJ22T and swap pistons, you can use the Wiseco .020 over bore pistons. They were intended to make the CR of a stock EJ22T with EJ22T heads 8.5:1. With the WRX heads and the Wiseco pistons I calculated it out to 8.22:1 CR. You'd also need to use a 2.5 turbo 100mm headgasket. I still need to check valve to piston clearance, but I think it'll be ok.
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10-17-2006, 04:48 PM | #13 |
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the low compression part being slow is all a lie, i made 200whp at 7psi and could walk all over a sti. thats light to light or hwy blast to 260kms.
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10-17-2006, 06:28 PM | #14 | |
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10-18-2006, 05:14 AM | #15 |
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Reason for open deck blocks is production cost. Closed deck and semi-closed deck are more expensive due to the more complicated molds.
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10-18-2006, 07:02 AM | #16 |
Sammo Hung
Moderator Member#: 10613
Join Date: Sep 2001
Chapter/Region:
South East
Location: N Fla / S Ga
Vehicle:2002 USDM WRX WRB |
don't forget the oil & water pump..
do believe the they are higher pressure to take into account the smaller water passages and extra capacity needed to account for the oil squirters.. |
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