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open or closed block help needed?

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Old Aug 12, 2011 | 05:14 PM
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Default open or closed block help needed?

hi is there anyway of finding out if my block is open or closed deck without taking the head off as my engine has been out and possibly changed b4 i brought it

Also

will open deck heads fit a closed block or closed fit open???????

and r ra heads any better than sti/wrx heads and any problems fitting?

sorry for all questions but never had to change heads on scoob b4

cheers

john
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Old Aug 12, 2011 | 05:40 PM
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The dimensions of both blocks are the same so are interchangable...........unless you are running huge power then which block makes no difference.

Why do you need to change the heads ??

Shaun
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Old Aug 12, 2011 | 06:18 PM
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If you have a cdb it should cross hatching on the block where they split below the alternator
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Old Aug 12, 2011 | 06:23 PM
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All the EJ20 v1-4 heads are the same castings, wrx have hyd lifters, sti have solid ones. Cams differ depending on year, again wrx and sti are different, some RA are different again. There are underbucket and overbucket shims too depending on year
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Old Aug 12, 2011 | 09:34 PM
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Originally Posted by Midlife......
The dimensions of both blocks are the same so are interchangable...........unless you are running huge power then which block makes no difference.

Why do you need to change the heads ??

Shaun
Hi mate i need to change tappets and valve stem seals and i've seen these heads for sale and it seems easier to change the complete heads than seals and tappets

cheers

john
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Old Aug 12, 2011 | 10:35 PM
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by tappets do you mean cam followers ?? Have you had a search around here for API's advice on noisy top ends??

500 has answered your questions.......for the most part the RA (Race Altered) were lightened / cheaper versions of the siblings on which they were based.

Shaun
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Old Aug 12, 2011 | 10:50 PM
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Originally Posted by Midlife......
by tappets do you mean cam followers ?? Have you had a search around here for API's advice on noisy top ends??

500 has answered your questions.......for the most part the RA (Race Altered) were lightened / cheaper versions of the siblings on which they were based.

Shaun
Hi Shaun yes cam followers i have'nt seen api advise will look

cheers

john
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Old Aug 12, 2011 | 11:02 PM
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https://www.scoobynet.com/non-scooby...treatment.html

Post number 7........still trying to track it down LOL

Shaun
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Old Aug 13, 2011 | 11:57 AM
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Cross hatching on a CDB






Mick
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Old Aug 13, 2011 | 01:31 PM
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Originally Posted by merlin24
Cross hatching on a CDB






Mick

Hi mick whereabouts is that hatching is it under the alternator housing?
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Old Aug 13, 2011 | 06:00 PM
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So what will my V5 Type R Ltd be then ?
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Old Aug 13, 2011 | 07:21 PM
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open
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Old Aug 13, 2011 | 11:12 PM
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Originally Posted by johnnywrx
Hi mick whereabouts is that hatching is it under the alternator housing?

Top arrow points to the general area under the alternator for the cross hatching and the lower arrow points to modine/oil filter housing cross hatching

Mick
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