Valve rockers

Technical MGB discussion
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Dave Wheatley
Posts: 122
Joined: Fri Sep 28, 2018 4:55 pm
Forename: Dave
Surname: Wheatley
Location: SW Scotland

Valve rockers

Post by Dave Wheatley » Fri Apr 12, 2019 10:35 am

Just checking valve clearances, and I notice that some of the rocker pads do not line up with the vale stem ends. The out of alignment is 20 - 30 thou sideways.

All the washers on the rocker shaft appear to be present.

Question, are all the rockers identical, or should they have specific places on the shaft? The shaft could have been dismantled, and reassembled wrongly perhaps.
1978 MGB GT
1931 Austin 7 RM
1955 Standard 10
1972 Ford Cortina
No modern!

Ian Fozzard
Posts: 391
Joined: Fri Mar 27, 2015 8:18 am
Forename: Ian
Surname: Fozzard

Re: Valve rockers

Post by Ian Fozzard » Fri Apr 12, 2019 1:04 pm

Dave,
happy to be corrected on this, but I believe all rockers are the same, and that this amount of misalignment is insignificant. It does emphasise the need to keep rockers and pushrods in their places when overhauling.

Ian F
1972 BGT, Blaze, Navy trim, recessed grill
1961 Midget, 948cc, Clipper Blue, Blue trim and weather gear

Dave Wheatley
Posts: 122
Joined: Fri Sep 28, 2018 4:55 pm
Forename: Dave
Surname: Wheatley
Location: SW Scotland

Re: Valve rockers

Post by Dave Wheatley » Fri Apr 12, 2019 6:05 pm

Ian Fozzard wrote:
> Dave,
> happy to be corrected on this, but I believe all rockers are the same,
> and that this amount of misalignment is insignificant. It does emphasise
> the need to keep rockers and pushrods in their places when overhauling.
>
> Ian F

Thanks Ian. I've not noticed this before on any cars that I have worked on for the last 60 years!

I'll have closer look at the shaft tomorrow.

DaveW.
1978 MGB GT
1931 Austin 7 RM
1955 Standard 10
1972 Ford Cortina
No modern!

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