Closed block?
16 July 2012, 06:56 PM
#1
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Closed block?
Hi,
Just been reading a thread on if a guy has a WRX or a WRX STi.
Must ask, what is meant by a "Closed engine block"
I'm very curious?!!
Just been reading a thread on if a guy has a WRX or a WRX STi.
Must ask, what is meant by a "Closed engine block"
I'm very curious?!!
16 July 2012, 07:14 PM
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16 July 2012, 07:22 PM
#8
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Here is the info from scooby projects, says mine is an EJ257 ?
Applied Model Code
Model(s) Impreza
Body Style 4-Door Sedan (Second Generation / New Age — Revision F, “Hawk Eye”)
Engine Type EJ257
Engine Specification 2457cc, Horizontal opposition 4-cylinder, 16-valve DOHC, Turbo (280ps)
Transmission
Suspension
Production Period June 2005 – May 2006
Market General and European (Right-Hand Drive)
Notes
My applied model code is GDFFKJH, it didn't copy and paste for some reason.
I also see it doesn't mention STi anywhere??!!
I have an 07/07 WRX STi (he says lol) Spec D.
Applied Model Code
Model(s) Impreza
Body Style 4-Door Sedan (Second Generation / New Age — Revision F, “Hawk Eye”)
Engine Type EJ257
Engine Specification 2457cc, Horizontal opposition 4-cylinder, 16-valve DOHC, Turbo (280ps)
Transmission
Suspension
Production Period June 2005 – May 2006
Market General and European (Right-Hand Drive)
Notes
My applied model code is GDFFKJH, it didn't copy and paste for some reason.
I also see it doesn't mention STi anywhere??!!
I have an 07/07 WRX STi (he says lol) Spec D.
Last edited by Hawkeye D; 16 July 2012 at 07:24 PM.
16 July 2012, 07:42 PM
#10
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Here is the info from scooby projects, says mine is an EJ257 ?
Applied Model Code
Model(s) Impreza
Body Style 4-Door Sedan (Second Generation / New Age — Revision F, “Hawk Eye”)
Engine Type EJ257
Engine Specification 2457cc, Horizontal opposition 4-cylinder, 16-valve DOHC, Turbo (280ps)
Transmission
Suspension
Production Period June 2005 – May 2006
Market General and European (Right-Hand Drive)
Notes
My applied model code is GDFFKJH, it didn't copy and paste for some reason.
I also see it doesn't mention STi anywhere??!!
I have an 07/07 WRX STi (he says lol) Spec D.
Applied Model Code
Model(s) Impreza
Body Style 4-Door Sedan (Second Generation / New Age — Revision F, “Hawk Eye”)
Engine Type EJ257
Engine Specification 2457cc, Horizontal opposition 4-cylinder, 16-valve DOHC, Turbo (280ps)
Transmission
Suspension
Production Period June 2005 – May 2006
Market General and European (Right-Hand Drive)
Notes
My applied model code is GDFFKJH, it didn't copy and paste for some reason.
I also see it doesn't mention STi anywhere??!!
I have an 07/07 WRX STi (he says lol) Spec D.
16 July 2012, 09:25 PM
#11
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You dont need to worry about the type of block really, thats not what counts for 99% of the time, if you wanted over 500bhp then you would consider knowing which block you had, all you have to worry about is the chocolate pistons that the 2.5's run (well chocolate engines 
).
As a 2.5 owner, you need to keep checking the oil regulary (not too bad for us 2ltr owners
), any excessive useage (ie 1ltr per 250miles) and its not a good sign, so a small ammount of useage is common on 2.5's, also keep an eye on the water levels, they are not too bad an engine, just not the best that subaru ever made, if you tune it you have to be careful and make sure you stick with the 99+ ron fuels (shell vpower/tesco momentum).
Tony
).As a 2.5 owner, you need to keep checking the oil regulary (not too bad for us 2ltr owners
), any excessive useage (ie 1ltr per 250miles) and its not a good sign, so a small ammount of useage is common on 2.5's, also keep an eye on the water levels, they are not too bad an engine, just not the best that subaru ever made, if you tune it you have to be careful and make sure you stick with the 99+ ron fuels (shell vpower/tesco momentum).Tony
Last edited by TonyBurns; 16 July 2012 at 09:36 PM.
16 July 2012, 09:30 PM
#12
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Thread Starter
You dont need to worry about the type of block really, thats not what counts for 99% of the time, if you wanted over 500bhp then you would consider knowing which block you had, all you have to worry about is the chocolate pistons that the 2.5's run (well chocolate engines ).
As a 2.5 owner, you need to keep checking the oil regulary (not too bad for us 2ltr owners), any excessive useage (ie 1ltr per 250miles) and its not a good sign, so a small ammount of useage is common on 2.5's, also keep an eye on the water levels, they are not too bad an engine, just not the best that subaru ever made, if you tune it you have to be careful and make sure you stick with the 99+ ron fuels (shell optimax/tesco momentum).
Tony
).As a 2.5 owner, you need to keep checking the oil regulary (not too bad for us 2ltr owners
), any excessive useage (ie 1ltr per 250miles) and its not a good sign, so a small ammount of useage is common on 2.5's, also keep an eye on the water levels, they are not too bad an engine, just not the best that subaru ever made, if you tune it you have to be careful and make sure you stick with the 99+ ron fuels (shell optimax/tesco momentum).Tony
Do you think running my standard WRX STi Spec D 2.5 on 97 RON for the last 1,600 miles has done any harm?
The car has done about 24k now.
16 July 2012, 10:21 PM
#17
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a few soobs have cdb s late 05 blobs have them aswell but tonys totally right the reason youd want a cdb when running above 500bhp is the liners start moving around but under 500bhp they wont move anyway
16 July 2012, 10:39 PM
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16 July 2012, 10:45 PM
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what subaru blocks come with liners as standard? and 05 blobs having a closed deck block? really? news to me.
16 July 2012, 10:51 PM
#21
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Originally Posted by bigsinky;10710594[B
]what subaru blocks come with liners as standard?[/B] and 05 blobs having a closed deck block? really? news to me.
16 July 2012, 10:55 PM
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17 July 2012, 12:12 AM
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sorry yes you have. some blocks on high power builds have strengthening liners inside the cylinders. this is what i was taking about. In the previous post the poster talked about the liners moving. does he mean the cylinder actually "warps"? i know strengthening liners can drop making the block useless.
17 July 2012, 12:14 AM
#25
Scooby Regular
lol when doing my build was told to get a cdb and was given a list of block types
it says late 05 sti blobs just before upgrade to 2.5 hawkeyes were closed decked i mean i havent got one like but thats what i was told
and yes earlier blobs were semi closed deck blocks
but i could just be miss informed
it says late 05 sti blobs just before upgrade to 2.5 hawkeyes were closed decked i mean i havent got one like but thats what i was told
and yes earlier blobs were semi closed deck blocks
but i could just be miss informed
17 July 2012, 12:17 AM
#27
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no when deck is open the liners can move under the massive pressure ie warp you can get better liners like dratons but most people get the block pinned to support the liners or the more expensive route is to have cnc cut inserts in the openings technically closing the deck
17 July 2012, 12:36 AM
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no when deck is open the liners can move under the massive pressure ie warp you can get better liners like dratons but most people get the block pinned to support the liners or the more expensive route is to have cnc cut inserts in the openings technically closing the deck
Tony
17 July 2012, 07:04 AM
#29
no when deck is open the liners can move under the massive pressure ie warp you can get better liners like dratons but most people get the block pinned to support the liners or the more expensive route is to have cnc cut inserts in the openings technically closing the deck