Fern, the 4 little side seals on the rear main bridge that you bought from Mancini swell when exposed to oil. So be care full when you install it. I had to buy another side seal kit as I could not get the bridge in after they had swelled due to contact with assembly lube that I put on the seal face.. I also offset my rear main seal slightly so the parting line of the Felpro seal was not in line with the plane of the block.
On Thursday, March 17, 2022 at 3:38:57 PM UTC-4 Fern wrote:
I found a source for rear main seal retainer for RB 413 engine from Mancini Racing.