Posted January 28, 201015 yr comment_307732 1978 280z L28 Ok I tried searching for this and couldn't find anything so far. Can anyone tell me which way the side seals go in on the rear main cap? When I say which way, I mean they are not perfectly square. One side is, the other has two "lips" on it so that when viewed from above, it looks rather like a lazy 'C'. I assume this side would go toward the block, but can anyone tell me? I've also got two small metal strips that came with my Felpro kit. Are these to push the seals in? Or are they installed with the seals? Any help would be appreciated. The FSM says jack about it except to install the side seals using some sealant. Thanks! Aaron Edited January 28, 201015 yr by aronlove To be more specific Link to comment https://www.classiczcars.com/forums/topic/34575-rear-main-cap-side-seals/ Share on other sites More sharing options...
January 28, 201015 yr comment_307767 It's covered rather well in the "how to rebuild" book by Tom Monroe, I would suggest obtaining a copy. With that said the nails go in after the seals on the block side, the 'C" goes on the block side, you do use a small amount of RTV in both the nail slots and the cap corners.He also mentions installing the rear main on the crank while installing it thereby eliminating the need for a special too. Link to comment https://www.classiczcars.com/forums/topic/34575-rear-main-cap-side-seals/#findComment-307767 Share on other sites More sharing options...
January 28, 201015 yr comment_307774 The "lips" of the seal goes toward the block, the nails go on the cap side with the beveled edge toward the seal.The nail is what pushes the seal into place against the block. Link to comment https://www.classiczcars.com/forums/topic/34575-rear-main-cap-side-seals/#findComment-307774 Share on other sites More sharing options...
January 28, 201015 yr comment_307777 Thanks Darrell, after posting it occurred to me I should have started it with IIRC. Link to comment https://www.classiczcars.com/forums/topic/34575-rear-main-cap-side-seals/#findComment-307777 Share on other sites More sharing options...
January 28, 201015 yr comment_307778 I had the book handy so I looked it up. Before i couldn't recall where the grove was, block or cap. It's been 7 yrs since i refreshed the engine in the 240.Thinking about it, I thought the gasket set had instructions?But the books are great for following when working on our cars. All books are a must have, from the FSM to the lowly haynes. Link to comment https://www.classiczcars.com/forums/topic/34575-rear-main-cap-side-seals/#findComment-307778 Share on other sites More sharing options...
January 28, 201015 yr Author comment_307792 Thanks so much. I will finally be able to get this finished. The FelPro set I obtained didn't have instructions in it. (Perhaps they were removed?) Oh well.Unfortunately I don't have the book you mentioned, I will look into getting a copy.Thanks again!:classic: Edited January 28, 201015 yr by aronlove Link to comment https://www.classiczcars.com/forums/topic/34575-rear-main-cap-side-seals/#findComment-307792 Share on other sites More sharing options...
May 16, 201212 yr comment_390262 I know this thread is old, but I recently used the same set of FelPro seals you to change out mine. Make sure before you add sealant and install the cap that you first slide the side seals all the way in until they bottom out. Get an idea for how much they stick out above the oil pan gasket surface, as you'll need to trim them later, but also want to make sure they're all the way in... I left about 2mm sticking up so the cork oil pan gasket and side seal would make contact, not leaving a gap under the surface. I also noticed that there was a decent wear groove and scar in the crank where the old seal sat, so I pushed the seal in, again about 2mm to overlap some thicker crank. I don't know if it will help, but I can't see it hurting anything. You could probably move it 3mm in either direction prior to tightening up the cap bolts. Link to comment https://www.classiczcars.com/forums/topic/34575-rear-main-cap-side-seals/#findComment-390262 Share on other sites More sharing options...
Create an account or sign in to comment