Rear Crankshaft Bearing Cap

[BT7 Owner]

Hello All,
I have a 1962 MK II that I have installed a rear crank seal kit. The seal seems to have a minor drip when parked.
A while ago I heard about drilling a hole in the rear of the main bearing cap to help drain oil from the lip seal area.
Has anyone had any experience doing this? I have searched but was not able to find any info about this procedure.

Any advice would be appreciated.

 

[BoyRacer]

There is no such thing as drilling a hole to drain oil from the rear seal. There is already a space in the rear main cap for oil to drain down into the oil pan.

 

[BT7 Owner]

Richard, thanks for the reply. Are you talking about the pipe that drains the oil from the rear main? The drilled hole that I heard about was supposed to be rear of the pipe and maybe drain the scroll area? I have my sump off right now and I thought maybe this was something I could do to help with the drip from the rear main seal kit. Oh well, I thought I would ask before I do something stupid!

 

[Bob_Spidell]

The seal kit we put in our BN2 recommended drilling the hole; but, my dad didn't like the idea so we didn't do it. It's been theorized that the pipe that drains the rear main cap is too long and, as the end is submerged doesn't allow enough drainage, so some have claimed to have shortened it.

 

[BT7 Owner]

Thanks Bob for the info. I found a thread on this site that is very interesting that goes along with what you talked about.

> Rear crank seal oil leak BN2 <​

They talk about the rear main bearing pipe and removing it for better flow from the bearing and also a drilled hole.