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Re: Valve Timing Question

Subject: Re: Valve Timing Question
From: "W. B. Olson" <>
Date: Mon, 15 Jan 1996 12:12:05 CST
> Date sent:      Sun, 14 Jan 1996 19:56:42 -0500 (EST)
> From:           John Van Valkenburgh <>
> To:             MG mailing list <>
> Subject:        Valve Timing Question
> Send reply to:  John Van Valkenburgh <>

> Hello again,
>    I am happy to report that the MGB engine rebuild is about finished!  I 
> had a problem earlier with oil pressure, but after many suggestions from 
> the list, I fixed the oil pump gasket and all is well.
>    I ran a compression test today and I measure 180 lbs +- 5 lbs on each 
> cylinder.  After adjusting the timing, the engine is beginning to smooth 
> out, but still runs rough with a distinct lack of power.  I suspect that 
> I'm still having carb problems, but I do have a question.
>    If the valve timing were off, would I still get strong even 
> compression across all 4 cylinders?  Its my guess that good compression 
> shows that the valve timing and valve settings are all fine, but I'm 
> curious what everyone else thinks.
> Thanks!
> John Van Valkenburgh
> Raleigh, NC   1970 MGB 
Nope.  A close friend of mine had a similar problem after a rebuild 
and we chased it all over the place.  Like you, it had good 
compression.  But in a fit of pique, we took off the timing cover.  
You guessed it - out of time by two teeth.  Retimed the valve train 
and it noe runs like a scalded dog.  FWIW. 

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