I imagine it is also responsible for #3 & #4 header pipes glowing a dull
orange in the dark? Sloppy valves=exhaust leaking past valve?
A. P. \"Sandy\" Grice wrote:
>
> "Jim Hall" <jimfoo@qwest.net> wrote:
>
> >Well, the problem turned out to be the ever popular #4 exhaust valve.
> >It is missing a piece. Guess it's time for a head rebuild.
>
> The reason for this is worn valve guides. The sloppy fit in the guide
> allows the valve to be pushed ever-so-slightly out of vertical by the
> rocker. Valve contacts seat at the same place first each rev, so it
> develops a hot/weak spot, leading to the familiar, wedge-shaped crack.
>
> *----jeep may be famous, LAND-ROVER is legendary-----*
> | |
> | A. P. "Sandy" Grice |
> | Rover Owners' Association of Virginia, Ltd. |
> | 1633 Melrose Parkway, Norfolk, VA 23508-1730 |
> | (757)423-4898 (757)622-7054 FAX (757)622-7056 |
> | |
> *----1972 Series III 88"----1996 Discovery SE-7(m)---*
-- Jim Hall 1966 88" Elephant Chaser http://www.users.qwest.net/~jimfoo "You know, I never really damaged my Rover 'till I started wheeling with Jim." Mitch Stockdale
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