what socket do i need for rocker cover bolts

RoverP6B · Post by **RoverP6B** » Mon Sep 01, 2008 9:41 pm

Rocker covers are attached, certainly in the case of my engine, with 4 screws, 1/4 UNC.

Ron.

Post by **katanaman** » Mon Sep 01, 2008 9:51 pm

I cant remember as I always change them for allen cap screws but it definitely wont be metric. If 8mm is loose then it will be 1/4.

jrv8 · Post by **jrv8** » Tue Sep 02, 2008 1:30 pm

Hi,
They're 5/16" AF bihex

Jim

TVRleigh · Post by **TVRleigh** » Tue Sep 02, 2008 5:42 pm

katanaman wrote:I cant remember as I always change them for allen cap screws but it definitely wont be metric. If 8mm is loose then it will be 1/4.

I think that's the thread 1/4 UNC not the spanner size your need.

5/16 would be right as that the closest to 8mm.

as other have said I always fit stainless cap heads.

blknight05 · Post by **blknight05** » Tue Sep 02, 2008 6:10 pm

jrv8 · Post by **jrv8** » Tue Sep 02, 2008 6:37 pm

blknight05 wrote:isnt 5/16 exactly the same size as 8mm ?

No, it's exactly the same size as 7.93mm

The socket size that you need is 5/16" AF bihex. You'll find it's a tighter fit than an 8mm one.

Jim

blknight05 · Post by **blknight05** » Tue Sep 02, 2008 8:35 pm

ok many thanks for your help

bodger · Post by **bodger** » Tue Sep 02, 2008 9:15 pm

on the rover V8 i have found if in dought try AF , as it was a yanky engine to start with and they are still quite few on it