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Oil Leak....No Joke

Posted by MG-STROKER

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Oil Leak....No Joke #1
MG-STROKER J R CENTRAL, IOWA, USA 1958 MG Magnette ZB 1965 MG MGB V8 Conversion	Posted: June 17, 2012 02:53PM Registered: 1 year ago Posts: 42

Oil Pan Leaking, And Crank Seal Leaking...Can You Replace Both With Out Engine Removal?

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Re: Oil Leak....No Joke #2
Big Ed Ed Brorein New Jersey, USA	Posted: June 18, 2012 09:14AM Registered: 5 years ago Posts: 460

When you say oil pan leaking, you mean the gasket no doubt? Hopefully someone else can comment on how difficult it will be to change and if you can do it without removing the engine. I know the pan is close to the front cross member so I would suspect you would have to undo the mounts and lift the engine some to get enough clearance. There is no oil seal on the rear of the crankshaft. There is a scroll machined into the crankshaft to force the oil back rather than leak past. Oil leaking out is a usually a sign of a worn engine, a lot of main bearing clearance and/or too much blow by causing slight pressure building up in the engine. Make certain it is not oil leaking from elsewhere. How is the oil pressure at idle and at speed?
Good luck , Ed

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Re: Oil Leak....No Joke #3
MG-STROKER J R CENTRAL, IOWA, USA 1958 MG Magnette ZB 1965 MG MGB V8 Conversion	Posted: June 18, 2012 10:38AM Registered: 1 year ago Posts: 42

It Looks Like The Front Crank Seal Is Leaking, Then Throwing The Oil On To The Right Front Motor Mount Then Drips Off Of There. The DPO Blue Siliconed The Pan...Just Looks Crappy Thought I Would Fix Both If I Didnt Have To Take The Engine Out.
JR

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Re: Oil Leak....No Joke #4
Wray Wray Lemke ., South Carolina, USA 1956 MG MGA 1958 MG Magnette ZB Varitone 1973 MG MGB 1974 MG MGB GT 1974 MG MGB GT	Posted: June 18, 2012 01:47PM Registered: 11 years ago Posts: 11,053

JR, I've never done it and although you could probably get the bolts out, it might not drop down enough to clear the oil strainer, which sits way down into the pan. As you can see, the Magnette pan is quite deep compared to the MGB pan and that strainer sits about 1" off the bottom of the pan.

In this pic you can see the oil strainer, this is from a donor engine; you can see it took a right nasty whack through the pan. But, it shows how deep it is. You would have to lift the engine pretty high to get the pan down enough to slide it out.

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Re: Oil Leak....No Joke #5
mjamgb michael anderson NORTHERN NEVADA, USA 1954 MG Magnette ZA 1967 MG MGB 1973 MG MGB 1974 MG Midget	Posted: June 18, 2012 04:27PM Registered: 4 years ago Posts: 6,403

Front seal is felt with a backer ring. Get a MGB front cover and it will have the neoprene lip-style seal but you may have to put on your own timing marks.

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Re: Oil Leak....No Joke #6
Big Ed Ed Brorein New Jersey, USA	Posted: June 18, 2012 05:23PM Registered: 5 years ago Posts: 460

Good to hear its the front seal leaking and not the back of the engine. My Magnette does not have it's engine installed so I can't comment, but maybe someone more knowledgeable can say whether or not you can pull the pulley and cover off the front with the motor in place. Ed

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Re: Oil Leak....No Joke #7
Wray Wray Lemke ., South Carolina, USA 1956 MG MGA 1958 MG Magnette ZB Varitone 1973 MG MGB 1974 MG MGB GT 1974 MG MGB GT	Posted: June 18, 2012 08:43PM Registered: 11 years ago Posts: 11,053

Sure, no problem. Pull the radiator and sit on a stool and do the work.

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Re: Oil Leak....No Joke #8
paddyreardon Paddy Reardon Calne, Wiltshire., United Kingdom 1956 MG Magnette ZA	Posted: June 19, 2012 02:56PM Registered: 3 years ago Posts: 145

While you are inside the front cover, I strongly recommend you take a good look at the camchain tensioner. They tend to be pretty worn and are easy to change.

I tried to take the sump off my ZA and eventually gave up and pulled the whole engine and gearbox. However, from memory, I could have replaced the cork seal only with the engine in place. Fiddly but possible if you are willing to cut the seal at an angle and glue the ends together.

BTW, the blue stuff is probably Hylomar, I would use it on the new seal as well.

Paddy

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Re: Oil Leak....No Joke #9
davido David Overington NSW, Australia	Posted: June 20, 2012 01:12AM Registered: 7 years ago Posts: 173

Just in case anyone does need to drop the sump, it is possible without a great degree of difficulty. You do need to undo the engine mountings and lift the engine slightly - until the clutch slave cylinder touches the body.
There is then enough clearance.
(I had to do this three years ago to solder a porous sump weld.)

David

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Re: Oil Leak....No Joke #10
MG-STROKER J R CENTRAL, IOWA, USA 1958 MG Magnette ZB 1965 MG MGB V8 Conversion	Posted: August 31, 2012 03:04PM Registered: 1 year ago Posts: 42

Oil Leak Update. Bought An MGB Timing Cover. The Hardest Part...Running Down The Tools.Thanks For All The Opinions!
JR

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