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what is a "closed deck block"

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Old 15 June 2008, 09:01 PM
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Ginge !
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Default what is a "closed deck block"

whats the actual difference ??

i hear it mentioned but aint got a clue what it is, what i look for and what the benifit is with it ?
Old 15 June 2008, 09:44 PM
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Bez300
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I think it is the 2.2 legacy engine. and the 22B engine.There is more metal round the pistons to give it more strength. its hard to tell by just looking at the block. but if you look where the starter motor goes into the block you will see some lines on the casting on the closed deck and they are not there on the std engine. any one with big power and good reliability would pos have one, pos with a 2.33 stroker kit or even new sleaves to make it 2.5. loads of torque. and the internals, but internals are nothing to do with the bloke. they are a lot stronger than the new 2.5.

Bez
Old 15 June 2008, 09:58 PM
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valley commando
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they have them in the spec c range
Old 15 June 2008, 09:59 PM
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Bubba po
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Hope this helps.
Old 15 June 2008, 10:20 PM
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Ginge !
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so all classics have a open deck then ?

cheers for the replys
Old 15 June 2008, 10:29 PM
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mufcdamo
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v1 sti/sti ra has a cdb
Old 15 June 2008, 10:50 PM
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johnnywrx
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Sorry for silly question i've a v1 sti so i will have a closed deck block does this mean the engine is stronger than an open deck?
Old 15 June 2008, 11:43 PM
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Anger
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Yep its stronger
Old 16 June 2008, 09:02 AM
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jaytc2003
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Originally Posted by Ginge !
so all classics have a open deck then ?

cheers for the replys
no, early classics may have a cdb. Mine did
Old 16 June 2008, 10:11 AM
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rossyboy
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yeah its not just early Sti models that had them. My '93 WRX has one.
Old 16 June 2008, 12:45 PM
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RICH S202
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Take a look at this thread on NASIOC. I thought Spec-c' s had closed deck blocks as in the picture above. Look at the pics of this guys engine and tell me surely thats an open deck block and not even a semi-closed deck block.Spec C 2.0 build. Stroked with STI crank and rods. Pictures - NASIOC
Old 16 June 2008, 01:04 PM
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speedking
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It has connections from cylinders to block at 6 and 12 o'clock (orientation as photos in post #4, and so is somewhere in between.
Old 16 June 2008, 01:06 PM
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Marx Mcrae
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so does a V2 sti have a closed deck block?
Old 16 June 2008, 01:23 PM
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SPEN555
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Originally Posted by valley commando
they have them in the spec c range
Spec C's are semi closed deck blocks. Just like all other STi's from 2001 onwards.
Old 16 June 2008, 01:57 PM
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g7prs
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I believe a way to tell is to look behind the alternator belt and there should be hatch markings on the block if its a closed deck block.

Old 16 June 2008, 02:30 PM
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Marx Mcrae
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Right then i'll go and have a look now!
Old 16 June 2008, 03:39 PM
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GC8
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Originally Posted by jaytc2003
no, early classics may have a cdb. Mine did
A small number of (mostly early) Classics have a closed deck block: principally the pre-facelift WRX Type-RAs. Early WRXs on their original engine wont have a CDB.

Simon
Old 16 June 2008, 04:09 PM
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92typeRA
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my 92WRX typeRA had a cdb

i will have a pop and say its only early v1 wrxtypeRA's, v1/2 stiRA's, and v1/2 sti's, that had the cdb from the factory. then thay started making the semi cdb then the open deck. to save a few pennys.
Old 16 June 2008, 04:18 PM
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GC8
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I used to know, but Im not certain any longer.....
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