sump gasket

[storm grey]

hi i am trying to cure my sump leak is my best option a gasket ei cork or rubber or just silicone.

[KevtheRev]

Silicone.

Use the method as described by Phazed in the thread below. I would also add, make sure your sump is flat applying a little panel beating round the bolt holes checking with a straight edge to get the face as level as possible.

You might also want to consider a reinforcing strip for the back 2 bolt holes as supplied by Rimmers.... https://rimmerbros.com/Item--i-603943

Sealing the sump......
https://www.pistonheads.com/gassing/topic.asp?h=0&...

[storm grey]

already got the reinforcing strip

[QBee]

I was having leak problems, but they turned out to be hole surrounds that were proud of the surface of the sump (as mentioned above), which left too big a gap for the sealant to bridge.
When my TVR guy took the sump off, having seen where it leaked, he spotted the non-flat surface of the sump and ground it smooth and flat, before going belt and braces with Phazed style sealant AND a paper gasket (well, that's what it looked like).
He normally only uses sealant, but was determined to stop the leak once and for all.

So no more automatic chassis protection system.....and no more black patches on the drive either.

[storm grey]

that could be whats wrong with mine will check when i take it off nothing more anoying than oil leaking.

[Steve_D]

If the face is not flat because the bolts have distorted the metal around the fixing holes it is better to hammer it flat (known as 'dressing' it flat) rather than grinding it. If you grind it the material around the holes will be thinner so will distort again but even sooner.

Steve

[QBee]

Thanks Steve - I cannot be sure which way my TVR guy did it, so that is a good point.
He is a properly trained engineer, so may well have done it the proper way.