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Leaking Diff and Possible Transmission?

Old 05-08-19, 06:20 PM
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Leaking Diff and Possible Transmission?

Hello everyone. This is my first time using any type of forums so if i'm in the wrong place for this question, let me know!
Anyways, one week ago I bought a 1985 RX7 GSL-SE 13B from a guy that contacted me after I posted an "In search of" post on craigslist. I got it for a pretty good deal, $700, and he was selling it cheap because of a small tree that fell on the hood a few months back (View the pic down below). It's not to bad in condition; it runs, most gears shift well (except 3rd...), and it all around runs well. (He board out the cats and took off the muffler but that does not matter...)
Anyways, as soon as I got the car, I started to do what it took to become my future drift car. The interior is mostly ripped out, and that's pretty much as far as I have gotten lol (Only had it since Wednesday of last week).
Recently I put it in my garage and parked it there so I could work on it past dark and I realized that there were a couple of leaks. One was coming from the diff in the back (the worst one) and there was one that what looked like it was coming from under the oil pan.
I was wondering if this was a common thing for this old of a car to do? Is it just the gaskets that need replacing or is it more of an expensive fix?
And sorry for the crappy pics. It's the best I could get cuz it's not lifted on jacks or anything like that. Let me know if you need specific to figure out the problem.







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Old 05-16-19, 09:02 PM
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Welcome to the board.

Well, your first course of action should be cleaning and checking your levels. Clean everything as best you can and see if you can identify exactly where the leaks are originating from.

Differential
Next would be make sure to check that all the bolts are tight. Hopefully something is just loose. If not, then:

1. FSM can be downloaded here: Foxed.ca
2. Other diff-leaking threads here: https://www.rx7club.com/search.php?searchid=15553567


Oil Pan Area:
It's a little more tricky. Start up top (like the dowel areas or filter pedestal area) and work your way down - front main, front cover, lines, etc.

Gearbox:
The simplest thing I can think of is take some on your finger and smell if it's gear oil.

That said, I never built a drift car, but I would imagine a common sense move (cheap insurance) in your case would be just re-seal everything! That should include pulling the tranny so you can replace rear engine main and front tranny seals, too.
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Old 05-20-19, 12:55 AM
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Originally Posted by diabolical1 View Post
Welcome to the board.

Well, your first course of action should be cleaning and checking your levels. Clean everything as best you can and see if you can identify exactly where the leaks are originating from.

Differential
Next would be make sure to check that all the bolts are tight. Hopefully something is just loose. If not, then:

1. FSM can be downloaded here: Foxed.ca
2. Other diff-leaking threads here: https://www.rx7club.com/search.php?searchid=15553567


Oil Pan Area:
It's a little more tricky. Start up top (like the dowel areas or filter pedestal area) and work your way down - front main, front cover, lines, etc.

Gearbox:
The simplest thing I can think of is take some on your finger and smell if it's gear oil.

That said, I never built a drift car, but I would imagine a common sense move (cheap insurance) in your case would be just re-seal everything! That should include pulling the tranny so you can replace rear engine main and front tranny seals, too.
Thats makes sense. Iím going to clean off everything hopefully this weekend and see where it is all coming from. Hoping itís just something thatís loose or just a new gasket. Thanks again!
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Old 05-22-19, 10:18 PM
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Originally Posted by diabolical1 View Post
Welcome to the board.

Well, your first course of action should be cleaning and checking your levels. Clean everything as best you can and see if you can identify exactly where the leaks are originating from.

Differential
Next would be make sure to check that all the bolts are tight. Hopefully something is just loose. If not, then:

1. FSM can be downloaded here: Foxed.ca
2. Other diff-leaking threads here: https://www.rx7club.com/search.php?searchid=15553567


Oil Pan Area:
It's a little more tricky. Start up top (like the dowel areas or filter pedestal area) and work your way down - front main, front cover, lines, etc.

Gearbox:
The simplest thing I can think of is take some on your finger and smell if it's gear oil.

That said, I never built a drift car, but I would imagine a common sense move (cheap insurance) in your case would be just re-seal everything! That should include pulling the tranny so you can replace rear engine main and front tranny seals, too.

Alright I lifted the car up and I think I found the pin point to the oil leak near the transmission. Looks like itís coming out of the flywheel access port. Could be the gasket that is coming from the crankshaft to the fly wheel maybe?
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