dyintorace
dyintorace GRM+ Memberand SuperDork
9/14/11 4:39 p.m.

Our Challenge Miata is leaking from what we suspect is the rear main seal. So...we're going to attack that and put in a new one. Under the (in)famous "while we're in there" mentality, are there other seals involved that make sense to change? Your advice is appreciated!

Chas_H
Chas_H New Reader
9/14/11 8:03 p.m.

Make sure the leak is not from the much more common back of the head cam angle sensor.

mw
mw HalfDork
9/14/11 8:40 p.m.

Clutch?

MrJoshua
MrJoshua SuperDork
9/14/11 8:41 p.m.
mw wrote: Clutch?

No!

MrJoshua
MrJoshua SuperDork
9/14/11 8:42 p.m.
Chas_H wrote: Make sure the leak is not from the much more common back of the head cam angle sensor.

It seems to be coming out of the weep hole in the trans bellhousing. It has been a year or so since I looked at it, but I am pretty sure it was only out of that hole.

MrJoshua
MrJoshua SuperDork
9/14/11 8:45 p.m.
MrJoshua wrote:
mw wrote: Clutch?
No!

Sorry-When it was mine the car was out of budget. Dyinto waited until the rest of the GRM world didn't come up with any offers and bought it for quite a bit less. he does have some room, but the stock clutch disc held well with the upgraded pressure plate when I had it. Unless it is oil soaked it will probably be OK.

dyintorace
dyintorace GRM+ Memberand SuperDork
9/14/11 9:04 p.m.

Agreed. Let's hope the clutch is fine. As for the original topic, any other seals that are recommended? Also, any guidance on swapping the rear main seal would be appreciated!

MrJoshua
MrJoshua SuperDork
9/15/11 12:30 p.m.

Would the GRM world recommend pulling the engine or would removing the transmission suffice?

motomoron
motomoron HalfDork
9/15/11 12:46 p.m.

When I was doing everything on my NA I left the engine in and pulled the trans/PPF/diff 'cause I was also doing every suspension bushing/chassis rail+butterfly braces/clutch/etc/etc I found the PPF to be a bitch, possibly as a result of something a PO may have done in the past.

If all I needed was bell housing access I'd probably pull the engine.

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