MGB Valve Adjustment How-To - Easy

Valve adjustment shown - cold technique (0.0.15 feeler)
Proper rotation of crank (rule of 9):
8 Open; Adjust 1
6 open, Adjust 3
4 open; adjust 5
7 open; adjust 2
1 open, adjust 8
3 open; adjust 6
5 open; adjust 4
2 open; adjust 7

[@NZbird]

Excellent presentation and thank you for the Haynes manual reference. I've owned a '72 B GT for 9 months and am slowly working my way through a maintenance schedule. Yet to check tappets and this is a great resource. Many thanks!
Geoff in NZ

[@mcnamarasgarage]

Thanks for the kind words! I'll try to get some more maintenance stuff up.

[@robinredbreast8292]

I just give a tug on the fan belt and stop when the valve i am watching is fully down. Quick and easy. Set mine to 13 cold, at 15 cold I find they still clatter a bit. Oh and they will slowly change a bit with use ! It can drive you mad but then you have to be a bit mad to run one of these.

[@M4TT1694]

Fantastic video!!

[@americanpatriot2422]

Outstanding video and presentation.

[@mcnamarasgarage]

Thanks!

[@MGB-learning]

Great video!

[@jeffhildreth9244]

There is an easier way used at Official BMC (MG) dealerships ( and professional Brit car mechanics) in the 60s-70s.
Rotate engine only twice and adjust all 8.

[@mcnamarasgarage]

Cool...with the rubber bumper cars it's so easy to put a socket on the crank bolt and turn it. I remember my 73 was not as easy though!

[@MadelineSmith-pi2zk]

How about the 4cyl engine

[@mcnamarasgarage]

Hi - this is the 4 cylinder 1800 cc standard B engine! There are two valves per cylinder.