I thought I would share my experience on this one.
I get a few z's a year here with me with oil leaks from rear of engine and the customers believes to be rear main leaking. On inspection 9 out of ten of these cars have evidence of sump removel at some time in it's life. This is the biggest clue. These oil leaks have almost always been sump leaking at the rear. Not the rear main.
It's a very simple repair which seems to be difficult to get right by many. One of the cars into us had had 4 rear main seals fitted in a year by another z garage only to be the sump.
Anyway here is a run down of things to remember when resealing your sump to get it sealed first go. Once the sump is off clean off all old gasket paste frm sump and engine block. Replace the half moon rubbers if possible. Clean sump and block with a good solvant we use dry brake cleaner. Next key sump faces with light paper or grit pad.
Next I use light cover of blue gasket paste on each half moon then possition in place on the block ends. Next use silicone sealant to place a cover over the thin ends of each half moon as it lays flat on the block . Next the sump run a bead of silicone pea size all the way around the sump faces . Next using your finger pull the side of the bead down to the egde of the sump face on the inside egde all the way along do the same for the outside egde this should leave a neat layer of silicone with a high beaded section at the centre. Last run a very thing layer of blue sealant around the rounded sections at each sump end. Now very carfully refit the sump. Tighen each bolt up evenly . Once on Do Not Fill with oil for a couple of hours. These things should ensure a good sealed and well fitted sump .
I thought I would share my experience on this one.
I get a few z's a year here with me with oil leaks from rear of engine and the customers believes to be rear main leaking. On inspection 9 out of ten of these cars have evidence of sump removel at some time in it's life. This is the biggest clue. These oil leaks have almost always been sump leaking at the rear. Not the rear main.
It's a very simple repair which seems to be difficult to get right by many. One of the cars into us had had 4 rear main seals fitted in a year by another z garage only to be the sump.
Anyway here is a run down of things to remember when resealing your sump to get it sealed first go. Once the sump is off clean off all old gasket paste frm sump and engine block. Replace the half moon rubbers if possible. Clean sump and block with a good solvant we use dry brake cleaner. Next key sump faces with light paper or grit pad.
Next I use light cover of blue gasket paste on each half moon then possition in place on the block ends. Next use silicone sealant to place a cover over the thin ends of each half moon as it lays flat on the block . Next the sump run a bead of silicone pea size all the way around the sump faces . Next using your finger pull the side of the bead down to the egde of the sump face on the inside egde all the way along do the same for the outside egde this should leave a neat layer of silicone with a high beaded section at the centre. Last run a very thing layer of blue sealant around the rounded sections at each sump end. Now very carfully refit the sump. Tighen each bolt up evenly . Once on Do Not Fill with oil for a couple of hours. These things should ensure a good sealed and well fitted sump .
DAZ
D2
Edited by Dazkent