[Mgs] setting valves after head machining / 1500 MGA

[Max Heim]

As he says it is a redone head, I was assuming that the valve seats were OK,
or he would have noticed. Incorrect valves would be a possibility, assuming
that a compatible valve with slightly longer stem even exists.

My MGB head had shims on the rocker brackets from the factory, so it's not
like that is an outrageous suggestion. But the shims were only maybe 0.005"
to 0.010", and that would hardly seem enough difference to cause one to run
out of valve adjustment.


--

Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the primer red one with chrome wires


on 7/13/09 8:42 AM, WSpohn4 at aol.com at WSpohn4 at aol.com wrote:

> If the valves are not adjustable with the adjusters all the way in, then
> they either have serious valve seat recession, or too long stems.  One
> doesn't like to remove material from the stellited tips as you can get into
> softer material in the stem that will wear.  Sounds like the head may need
> new 
> seats or new valves or both.
>  
> I suppose you could shim the pedestals, but I hate to do that to cure a
> problem. like that.
>  
> Bill
>  
>  
>  
>  
> In a message dated 7/13/2009 8:03:38 A.M. Pacific Daylight Time,
> thgun at comporium.net writes:
> 
> I have  talked to a few people about this and I am still not clear as to
> how to go  about fixing my problem. I purchased a redone head. Now a few of
> the valves  are too tight to adjust. Can I use shims all the way across to
> raise the  rocker assembly? If so where can I get them? Any other  tips.