Timing Cover Leak - What other parts should I change while I'm in there?
 

Hi All,

I'm new to this forum and this is my very first post. Glad to be a member!

I have an AT '15 FR-S and discovered that I need to reseal the timing cover as it's leaking oil. I've seen a couple old threads on the topic but I wanted to know if anyone has a list of other parts I should replace while I'm in there.

Gaskets are the first thing that come to mind. If anyone has a list and even better, easy access to part numbers, I'd be most appreciative. Just trying to make most use since I'll be taking apart the car anyways. Would hate to have to do it again down the line. Thanks!

-FR & S

A google search would net you the following thread:

https://www.ft86club.com/forums/show...=125848&page=2

Also:

- Disassembly:

https://demos.starbase7.net/t3Portal...M000000T5703FX

- Re-assembly:

https://demos.starbase7.net/t3Portal...M000000T5303HX

And for any future DIY maintenance, here's the Workshop manual ( @Ultramaroon , thank you :) ):

https://demos.starbase7.net/t3Portal/

PS

Be VERY careful when cleaning/removing the old seal packing. Do NOT drop any residue/remains into the upper portion of the oil pan/oil galleries/engine guts.
I would cover the exposed timing chain area with a suitable, non-tearable protective foil/cloth/etc. to shield it against any scraped off residue.

+1 on screen


https://parts.toyota.com for part numbers. It's handy to have your VIN ready.


Be super careful with the connectors on the OCVs when handling the timing cover. People have snapped them.

Thanks so much for the replies. Really good info.

I gotta say, the "easier" fix posted by ZZT86 seems kind of tempting but not sure how lasting the fix would be.

https://www.ft86club.com/forums/show...=125848&page=2

When I first saw it I thought it would fail miserably. Was surprised and happy to see how well it held up. Surface prep is key. If it's a small enough leak, the RTV will cure before oil has a chance weep though. Nothing wrong with giving it a shot.

ultramaroon...have you also tried this method or know of others who have? or is this based on ZZT86's feedback? thanks!

This part of the engine/timing cover does not see high oil pressure (somebody correct me if that is not correct) so it should work :)

Thoroughly degrease/clean the area before sealant application, just like Ultramaroon mentioned.

I've seen cracked iron blocks successfully repaired with jb weld. If it's a slow enough seep and a good job with surface prep, I can easily see it lasting indefinitely. I've gotten away with similar but the patch in that thread was baller.