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 ?

 

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

 

they have them in the spec c range

 

Hope this helps.

 

so all classics have a open deck then ?

cheers for the replys

 

v1 sti/sti ra has a cdb

 

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?

 

Yep its stronger

 

no, early classics may have a cdb. Mine did

 

yeah its not just early Sti models that had them. My '93 WRX has one.

 

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

 

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.

 

so does a V2 sti have a closed deck block?

 

Spec C's are semi closed deck blocks. Just like all other STi's from 2001 onwards.

 

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.

 

Right then i'll go and have a look now!

 

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

 

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.

 

I used to know, but Im not certain any longer.....