Sealing A Sump

[dave205 19]

Whats the best way of sealing a sump back on? Ive cleaned the face up carefully with a scraper, but not sure what sealant to use. Also whats the torque setting for the bolts and i assume theres a tightening sequence aswell?!

[rallyeash 155]

i use the Wurth black RTV stuff thats in a can with a nozzle, never had any problems with that.

 

not sure on the tightening sequence but i just work in opposites

[petert 586]

ThreeBond 1211. It was designed to seal motorcycle gearbox cases, so a sump is a walk in the park. It only needs a smear. I always do both faces to be sure. You'll apprecate it even more when time comes to remove it. Bolts 11Nm from memory.

[Tom Fenton 1,541]

Tin or alloy sump?

 

Tin sump I prefer to use Stag Wellseal with a gasket.

 

Alloy sump I use Wurth RTV silicone.

 

Both types, you MUST thoroughly clean and degrease the faces, I also like to leave the sump overnight if possible for the sealer to go off before putting oil in.

[Ryan 99]

20Nm for the sump. No particular sequence, just work out from the centre, or start at opposite corners - anything like that...

[DamirGTI 342]

For tightening the bolts :

 

Use an accumulator hand drill , set the drill strength "clutch" to highest , fit an square extension in the drill and socket on top .

Start tightening from centre outwards , or diagonally as you wish ... just do them up till the drill starts slipping and that's it .

 

By this method they'll all be tightened to the same torque (which is more important than specific torque spec as regards to the sump sealing)

 

Try , it's easy and it really works

 

 

Damir

[EZ Tutty 7 1 Cars]

Another vote for Wurth RTV Sealant... i used some on my R32 recently and it worked a treat!

 

I've also used it for Water Pumps and stuff.

[kyepan 291]

Clean each bolt so it's free of grit, this will minimise the risk of cross threading or stripping the bolts, this is actually quite important.

Making sure each face is spotlessly clean, and fully degreased is the key, that and leaving it at least overnight before refilling. Nipping up a bit more in the morning doesn't hurt, especially if you've cleaned all the threads, that's up to you though.

 

Cheers

J

[dave205 19]

Seems wurth rtv sealantis the stuff to use, how much will it take?

[petert 586]

You could do that, but it's not what a professional would do.

 

http://www.threebond.com/Comsumer.html

[welshpug 1,657]

not seen that stuff over here, most tradesmen use Wurth or Loctite, also used elring without issues.

[petert 586]

Maybe try here?

 

http://www.threebond.co.uk/

 

Try a tube of 1211. You'll be pleasantly surprised.

[dave205 19]

I went for a tube of wurth rtv black sealant in the end, cleaned the faces and degreased them and refitted the sump so will fill it with oil tonight and see!