I wanted to change the engine mounts and some gaskets of the 240.

for the mounts on skandix for both there is the "heavy duty" version: does it change anything in terms of duration or is it for specific types of engines?

both give them for every engine except B20

left
https://www.skandix.de/en/spare-parts/engine/engine-mountings/engine-mounting-left/1000048/

left heavy duty
https://www.skandix.de/en/spare-parts/engine/engine-mountings/engine-mounting-left-heavy-duty/1028677/

right
https://www.skandix.de/en/spare-parts/engine/engine-mountings/engine-mounting-right/1000049/

right heavy duty
https://www.skandix.de/en/spare-parts/engine/engine-mountings/engine-mounting-right-heavy-duty/1028678/

for the differential from what I've read around there is more than one model, mine has the drain plug. is the gasket correct?
https://www.skandix.de/en/spare-parts/drive-train/wheel-drive/differential/gasket-differential/1000205/

for the valve seal
https://www.skandix.de/en/spare-parts/engine/gaskets/rocker-covers/gasket-valve-cover/1000176/

I read that it should be paired with a new "half moon". Bullshit or does it make sense?
https://www.skandix.de/en/spare-parts/engine/gaskets/rocker-covers/halfmoon-valve-cover/1000178/

Early 240's will not have the half moon. You have never stated the year of your car. It would help to know this. I'm thinking you will find the half moon on '83 and newer models.

I am curious to know what market your car was made for. You mention buying mounts from Skandix which, I believe, is a German vendor. You also mention the carburettor in an earlier post which definitely rules out U.S. cars. Are you in Europe? Canada? Somewhere else?

Just wondering.

I was also going to mention that oil will degrade the rubber in the mount or so I have been told on this site. This is more of a concern on the right side of the engine. Just be careful at oil/filter change time.

The standard mount should be fine if it is genuine Volvo OE. Mounts from MTC are to be avoided at all costs.


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'79 242, '84 DL 2 door, '80 DL 2 door, '89 DL Wagon, '15 XC70 T6 AWD

Sorry, I gave this date for granted..my fault!

IS a 1981 B19A engine, Italy.
Is equipped with stromberg carburettor.

My mounts seems ok but are 44 years old, even if the car has only 106.000km and runs smooth so changing them is a preventivate maintenance.

The half-moon plastic plugs under the valve cover at the back were at best an engineering fix to fill the gap where a rear mounted distributor would be. It doesn't take a lot of crankcase pressure from a neglected PCV system to blow them out and let engine oil get blown out the back of the engine. If the plastic gets old, brittle and shrinks then by all means it's best to replace them, but other than that it's best to simply put a supporting strap behind them to keep them from blowing out. Threaded holes for the distributor are already present in the back of the block on either side of the plug, so you just need to fashion a simple strap out of any kind of metal with a hole in each end and find a pair of small metric bolts that will thread into the holes. IPD used to sell the strap and bolts, but it's just as easy to make your own.
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Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now

not sure exactly what to look for, because I'm not so skilled about 240's.
Is it something I have to crawl by hand? I don't remember to be visually accessible.

Can you suggest me some reference to study?

The half-moon plug is right below the valve cover in the back of the head in line with the camshaft. You'll be able to see the black plug and the neighbouring bolt holes with a hand mirror and light. If you regularly check and clean your PCV system to make sure the flametrap, oil separator box and hoses aren't plugged then the odds of it ever blowing out are slim, but it's still a good idea to put a restraining strap behind it just to be safe. The usual signs that your PCV system needs attention are oil weeping from the front engine seals and the rear main seal. If you continue to ignore it then crankcase pressure can become excessive and blow out one of the seals or the half-moon plug, whichever is the weakest point. The rear main seal is not trivial to replace, requiring the trans to be dropped.
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Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now

does my '81 has the PCV?
front seal is luckily bone dry :)

Sorry, I was thinking it was a later fuel injected engine because you were talking about a half moon plug. I don't think yours has one. It also won't have the oil separator box, PCV hoses and flame trap on the intake manifold that I was thinking of. I imagine yours has the breather hose off a PCV valve and uses a flame arrestor type of oil filler cap.
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Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now

A few quick comments:

Personally, I would not use the heavy duty engine mounts. 240’s OE factory engine mounts are soft for a reason. I believe the heavy duty mounts will cause more engine vibration and harshness than you would like. Plus, they may be for the Diesel engines anyway. Check that out. Volvo mounts are the best but I don’t believe they are available. Haven’t changed 240 mounts in years, but I’m sure someone else will chime in with the best available mounts.

Yes, get a new half moon.

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Will I buy another Volvo??? We'll see....

correct observation, thanks!