Had the sniffer in the expansion tank today. HC was 0 but Lambda sat at 20 on idle and raised to 80 on gentle revving.

Pressurised the system at work and it lost around 4 psi over 30 mins but it was cooling down too so a pressure drop is to be expected. Would have checked it again when cooled but the cheap and nasty tester gave up the ghost after one of the other lads in the workshop used it.

Ordered a Gp A gasket and bolts from Woodford today so hopefull Ill see them tomorrow and I can make a start with it.

3DOOR ARY I used the ARP kit 3 times on my last Sapph which were already on after its previous build and they were used another twice on that car after I sold it, now Lawnsy runs them on his.