Socket to fit....
 

...inside Closed Deck Block cooling channels to split block....No.1 in this pic. 12 point 12mm socket has too much play as the bolt-head is coroded.

http://i1215.photobucket.com/albums/...oker/Block.png
http://i1215.photobucket.com/albums/...troker/033.jpg

GpMarty PM'd me to say he used anti-slip sockets but that was on open deck and i'm not sure they will fit inside the channel.

I would try and use the antislip sockets and if it doesn't fit get it in a lathe and machine it down so it does fit.

I'll have to try to remember where i left my lathe....

i used a imperial 12 sided, forget the size, but it was perfect. nip to motor factors and get a imperial 3/8th set. i had mine from halfords.

Do you mean a slightly-smaller-than-12mm socket in imperial sizes, IE in between 11-12mm?.

A 12mm surface drive socket should work and shouldn't be any bigger than a standard 12mm socket.

yeh. was a really tight fit. so tight i had trouble on some bolts removing socket. used it to re torque them up, no slip at all.

Are you trust worthy? Could lend you the one I bought for the exact same thing.

Alternatively go to Halfords, You need a deep multi-point socket, 12 mm. No larger than 3/8 drive though, as it won't fit since you need a narrow walled socket. :thumb: About £5 for the Halfords Professional one.

Damn, should have read your OP properly.

As above, try an Imperial sized socket.

engine build.
 

Hi bud, could you tell me what manual you are using for ur engine build?

I'd like to get myself one because im looking at doing something very similar to you.

Many thanks tim.:thumb:

Its a 93-96 impreza service manual, i think i downloaded it from someone on here. You could PM me your email and i could try sending it depending on the size?