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MG MGA - tappet inspection covers ?

How tight should the nuts be, I have just found that both on mine are loose, Vin
Vin Rafter

The cover bolts should be torqued to 2 ft pounds according to my autobook manual, cheers, Glenn
Glenn Hedrich

My A55 workshop manual says 5 pound-feet.

Don't forget the sealing washers. I found an amazing amount of oil can leak through a split/missing one.

Malcolm
Malcolm Asquith

I have a combined MGA/MGB Owners Workshop Manual. It mentions 2 types of cover. I am not sure if both were available on the MGA. The shallow pressed cover is 2lb ft; the deep pressed cover is 5 lb ft. So you are both right.

I am also not sure how you know what type you have unless you have one of each to compare!!

It is certainly an area that needs sealing properly. It was where I had the most oil weepage when I did my recent overhaul.

Steve
Steve Gyles

Toyota part # 00295-00103 (FIPG)black This is what Toyota uses instead of a pan gasket on all their cars now. Best sealant available. $13.82 for a 3oz tube. Seals almost anything.
R J Brown

Hi, I believe the MGA & early MGB used the shallow pressed covers and the later MGB's used the deep pressed covers, if memory serves. The deep cover bolts need to be torqued to 5 ft lbs. That amount of torque on the shallow covers will cause them to leak! Cheers, Glenn
Glenn Hedrich

best to upgrade the covers with later MGB one's and thier sealing washers..these use a rubber compound type gasket.. if you use the orig covers make sure they are not bowed in and knock em straight if they are.. a 2 1/4"length of 5/16 fine stud, screwed in the hole with locktite, calculate position of plate to give slight gasket squeeze and put a nut and then washer on the inside..add sealant to gasket and washer..place cover on add another external washer and sealant and use a nylock nut and screw up tight..the deal is to sandwich the plate and washers..the squish amount of gasket is also critical..this method,carefully executed should give a leak free cover needing no further attention..
TJ Trevithick

This thread was discussed between 31/12/2009 and 03/01/2010

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