Cam cover gasket, sealant?

[Bohica]

I need to change thye Cam cover gasket, yet again. Is lasting three years ok for these? Is it wrthwhile using an RTV?
Thanks

[shack]

I need to change thye Cam cover gasket, yet again. Is lasting three years ok for these? Is it wrthwhile using an RTV?
ThanksI think that you need to go genuine with both the gasket and the isolaters.

Even with genuine it's not a great setup.

Recently I've been using aviation form-a-gasket, painted both sides and fitted it. I wouldn't use any kind of RTV, at best you make a mess outside, and a terrible mess inside for the next guy to get off (usually you again).

The aviation stuff makes a mess, wear rubber gloves ... But you can clean up the outside of the engine when you finish with isopropyl alcohol, methylated spirits or even turps.

I really should redesign it... In my spare time.

[Bohica]

I used genuine, it leaks at the rear. Funny that the VW golf, VW tiguan Mercedes Valente doesn't leak. Land Rover must use **** rubbers and/or a poor design. Thinking a bout it, a lip that sextends below the gasket line on the inside would reduce the amount of oil getting to the gasket. A raised section down the middle on the lower casting would also help.

[shack]

I used genuine, it leaks at the rear. Funny that the VW golf, VW tiguan Mercedes Valente doesn't leak. Land Rover must use **** rubbers and/or a poor design.

I think my first move would be to put the top of the cam carrier and the bottom of the rocker cover on a head planing machine....

[Bohica]

Mine only leaks at the rear, I'm not sure a super flat surface would help. I mean to say old chap, the rubber is there to account for the waviness of these surfaces. (Good grief I can see the engineers saying that!)

[shack]

Mine only leaks at the rear, I'm not sure a super flat surface would help. I mean to say old chap, the rubber is there to account for the waviness of these surfaces. (Good grief I can see the engineers saying that!)No doubt you are aware that there are 2 different seals depending on the head version?

The only difference is the size of the "D" at the back.

[Bohica]

No doubt you are aware that there are 2 different seals depending on the head version?

The only difference is the size of the "D" at the back.

Oh yes. Didn't know what the difference was.

[shack]

If the "D" isn't tight, you've got the wrong one!

BTW, I have seen a 10p head with the 15p gasket needed, I'm not sure if the cam carrier was replaced or if it was like that from the factory.

[sierrafery]

You definitely need the dedicated gasket for the engine ERR7094 for 10P or LVP000020 for 15+P, some sealant is needed for 10P but not for 15 and check that drain hole(B in the pic) to be free cos that's one reason for leaks there, i used sealant once when i knew too little about Td5s(not anymore) and it leaked there while that hole was clogged then after i cleaned it was leakless for ages.

[AK83]

I also use the brush on forma a gasket stuff, in fact just last week(to get mine past RWC). I'm 99.9% sure I used it on the TD5 back in the day too.
Previous operator wasted hundred of dollars on copious amounts of a couple of different RTVs. From the amount of oil covering the area, only conclusion was that it was a wasted effort. horrible job trying to get it all out of the nooks and crannys too.

[Bohica]

You definitely need the dedicated gasket for the engine ERR7094 for 10P or LVP000020 for 15+P, some sealant is needed for 10P but not for 15 and check that drain hole(B in the pic) to be free cos that's one reason for leaks there, i used sealant once when i knew too little about Td5s(not anymore) and it leaked there while that hole was clogged then after i cleaned it was leakless for ages.

What do you mean by ages? Years or months [bigsmile1]

[Bohica]

I also use the brush on forma a gasket stuff, in fact just last week(to get mine past RWC). I'm 99.9% sure I used it on the TD5 back in the day too.
Previous operator wasted hundred of dollars on copious amounts of a couple of different RTVs. From the amount of oil covering the area, only conclusion was that it was a wasted effort. horrible job trying to get it all out of the nooks and crannys too.

The aviation type? As well as the rubber (sieve) gasket?

[sierrafery]

What do you mean by ages? Years or months [bigsmile1]about 10 years untill the loom started leaking... then untill today [wink11]

[Bohica]

about 10 years untill the loom started leaking... then untill today [wink11]

Wow, that is amazing, I live in hope.

[AK83]

The aviation type? As well as the rubber (sieve) gasket?

Yeah, Permatex. white-ish/grey bottle, lid had built in brush.

White TD5(D2) we've had since 2017. In 2017 we did the injector seals. Loom and new gasket, but not new washer/rubbers for the bolts. That one is 7 years and no leaks.

(new) Silver TD5(D2a) ... a previous attempt using two different coloured RTV had the rocker cover leaking. It's tedious getting it all out of the nooks and crannys. Again I used form-a-gasket. I think I use it primarily to keep it in place correctly when offering up the rocker cover. It says in the 'destructions' that you have to let it dry a bit before you offer up surfaces/gaskets/etc.

I also had a leak on the difflock mechanism side cover on the T/C on the D2a. What a pain to get that off. again, heaps of RTV that didn't seal, and annoyingly the leak was from the topside of the side cover, so it looked like intermediate shaft leak in some ways. Good clean up tho showed, inter'shaft was dry, but side cover leaking. No gasket for that one, so form-a-gasket again. [thumbsupbig]

[Bohica]

Yeah, Permatex. white-ish/grey bottle, lid had built in brush.

White TD5(D2) we've had since 2017. In 2017 we did the injector seals. Loom and new gasket, but not new washer/rubbers for the bolts. That one is 7 years and no leaks.

(new) Silver TD5(D2a) ... a previous attempt using two different coloured RTV had the rocker cover leaking. It's tedious getting it all out of the nooks and crannys. Again I used form-a-gasket. I think I use it primarily to keep it in place correctly when offering up the rocker cover. It says in the 'destructions' that you have to let it dry a bit before you offer up surfaces/gaskets/etc.

I also had a leak on the difflock mechanism side cover on the T/C on the D2a. What a pain to get that off. again, heaps of RTV that didn't seal, and annoyingly the leak was from the topside of the side cover, so it looked like intermediate shaft leak in some ways. Good clean up tho showed, inter'shaft was dry, but side cover leaking. No gasket for that one, so form-a-gasket again. [thumbsupbig]

Did you use both the forma gasket and the rubber gasket?

[AK83]

yep. the forma a gasket was more so to keep the gasket in place whilst cover goes on.
IIRC the narrow section just behind the cam sprocket/chain can move when placing the cover on.

Can't remember if I did the rubber gasket on the cover or on the head last week, but have done both ways.