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MG Car Repair/MGB Oil Pressure


Carl Greer wrote at 2014-04-02 05:58:18
Hi Barrie, you asked me to let you know what happened in my oil pressure issue.

Well I replaced the oil pressure relief valve with the standard valve, not the ball bearing. My old spring was a bit short but the new one only gave me a marginal increase in pressure.

I then replaced the Castrol 20w50 with Penrite 20w60 and the results look OK to me. I am now getting 40psi at idle on a hot engine and 50psi at higher revs.

I plan keep on driving more and worrying less. I'd be interested in any thoughts you might have.



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Barrie Jones


MG Sports Cars from 1949 to 1980 - Including MGB, MGBGT V8, TF1500, TF, TD and modern Midgets. I also specialise in SU carburettors, Lucas wiring, suspension, steering & brakes.


I have owned my 1955 TF1500 since 1966. Technical specialist for the TD and TF with the MG Car Club T Register. Also owned 20 MGBs and currently own an MGBGT V8. Written 3 books on MGs and produced a DVD on how to strip and rebuild the TD/TF gearbox.

MG Car Club.

Barrie's Notes on the 1953-55 MG TF (author). /=====/ Barrie's Notes on the MGB (author). /=====/ Barrie's Notes on the MGB GT V8 (author). /=====/ The Essential Buyer's Guide to the MG TD, TF and TF1500. (author)

M Phil, C Eng, BSc (Eng).

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