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

 

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

 

If you have a cdb it should cross hatching on the block where they split below the alternator

 

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

 

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

 

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

 

https://www.scoobynet.com/non-scooby...treatment.html

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

Shaun

 

Cross hatching on a CDB






Mick

 

Hi mick whereabouts is that hatching is it under the alternator housing?

 

So what will my V5 Type R Ltd be then ?

 

open

 

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