Felpro Permadryplus Sump Gasket – B Series
As with any engine, leaks can develop as time and miles go by. The sump gasket is a common leak found on the B series engines – unfortunately, many owners or shops may try to tighten the sump bolts to stop the leak.
This makes matters worse, as the sump on these engines have raised dimples that are stamped in the flange to prevent over compression of the gasket on the assembly line.
By tightening the bolts beyond the original torque specification, these dimples can be crushed and the sump sealing flange can deform, creating leak paths and will resulting in an even worse leak!
At this point, the OE-style sump gasket design will no longer work, because it relies on the correct formed dimples to prevent over compression of the gasket. In this case, there are two options – replace the sump at over $100, or install the new Fel-Pro PermaDryPlus sump gasket – OS 30630 T.
FYI – Installation Tip
The OE gasket does have two compression limiters molded into it – they can be found only on the transmission side of the sump. When removing the old gasket, these limiters can be left behind, stuck to the sump. If these limiters are left in place, the limiters built into the Fel-Pro gasket will stack on top of them and result in an oil leak.
Be sure to inspect and remove them when cleaning the flange.
Like every Fel-Pro PermaDryPlus gasket, the OS 30630 T must be installed on clean and dry sealing surfaces, with no sealers, adhesives, or RTV applied to the gasket. The repair manual replacement procedure instructions should be followed for this gasket, as with all Fel-Pro gaskets unless otherwise noted. As directed by the repair manual for these applications, there are 4 areas on the engine block where RTV must be applied – the two joints created by the oil pump and the two joints created by the right side cover. RTV is needed at these points because the components coming together creates a joint which no gasket can “flow” into. A little bit of RTV will get on the gasket when the gasket and sump are placed on the block, which is ok as long as RTV is not applied anywhere else.