23-01-2015, 02:20 PM
What sump is it - steel or alloy?
Alloy sumps will seal fine with a good quality RTV providing that you ensure that both faces are completely degreased and that there's no oil that'll contaminate it before the sealant fully sets. With the engine in the car, that'll mean degreasing as much of the inside of the block as you can too, as the oil will run down otherwise.
Steel sumps can be much more problematic and ideally need a proper good quality gasket - Payen preferably. Even then, if they're warped which they often are if they've taken a hit or been removed heavy handedly, you'll struggle to get them to seal perfectly and is why I tend to end up swapping to alloy sumps.
Alloy sumps will seal fine with a good quality RTV providing that you ensure that both faces are completely degreased and that there's no oil that'll contaminate it before the sealant fully sets. With the engine in the car, that'll mean degreasing as much of the inside of the block as you can too, as the oil will run down otherwise.
Steel sumps can be much more problematic and ideally need a proper good quality gasket - Payen preferably. Even then, if they're warped which they often are if they've taken a hit or been removed heavy handedly, you'll struggle to get them to seal perfectly and is why I tend to end up swapping to alloy sumps.
1990 Peugeot 205 GTi 1.9 // 1991 Peugeot 205 GTi 1.9 16v // 1992 Peugeot 205 GTi 1.9 // 1999 Peugeot 306 HDi Estate