Sump bolts size ?

[Hoofa]

Gents after a unsuccessful attempt to stop sump leaks I have decided to fit some studs. Anyone know the thread and length please.

[Discopotatoes]

I've just stopped mine leaking with a combo of proper gasket sealant and a brace across the rear two bolts, my sump was also slightly out of shape due to over tightening, so I doubt studs will help if its the same.
Do you have pressure in the crank case? I found I did when I was breathing to atmosphere

Edited by Discopotatoes on Thursday 22 August 07:04

[Hoofa]

I have the brace for the rear ones, used the vw oil pan sealant. What did you do check the sump for high spots ?

[Discopotatoes]

Hoofa said:

I have the brace for the rear ones, used the vw oil pan sealant. What did you do check the sump for high spots ?

Yes pretty much where the bolts go through the holes it can pull it out a bit

[phazed]

After a few attempts trying to cure mine, it's oil tight now.

Put a straight edge, (a level is ideal) across the sump to check for high spots.
Dress down if necessary.
Clean faces with a solvent.
I use one stud on each side of the sump to aid alignment.
I used only a good quality sealant, DIRKO-S, no gasket.
Tighten bolts, not too tight.
Leave to set for a couple of hours and just nip up a tad.

Job done.

[Sardonicus]

4 years and counting cork gasket and Wellseal old school horrible sticky stuff good though it don't wash out or break off

[neal1980]

I never had a problem after I used a cork gasket. Again get a straight edge make sure nice and level I super glued the gasket to the pan then smear of blue and nip up. I never had a single drop after this.

Ensure your breathers are big enough.. for a forced induction V8 you really want breathing from both rocker covers IMO. If all else fails buy an LS

[spend]

5/16UNC 1.25". A Socket cap is better behind the oil pressure transducer of you have a serpentine timing cover.