CLASS RACER FORUM - View Single Post

Alan Nyhus · 05-27-2019, 10:13 PM

One block I used had been line bored and the rear seal was leakage prone. Shortened the half of the seal that fits in the block until it fit normally. No offset and a dab of Valco aluminum silicone on the back of the seal and the parting lines.

We've seen a rash of rear main seal leaks lately with both the brown and blue seals.

05-27-2019, 10:13 PM	#5
Alan Nyhus VIP Member Join Date: Dec 2002 Location: Lower Dakota territory Posts: 1,180 Likes: 1,074 Liked 799 Times in 236 Posts	Re: Rear Main Seal Advice One block I used had been line bored and the rear seal was leakage prone. Shortened the half of the seal that fits in the block until it fit normally. No offset and a dab of Valco aluminum silicone on the back of the seal and the parting lines. We've seen a rash of rear main seal leaks lately with both the brown and blue seals. __________________ "That'll never work....."