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04-06 Ralliart Engine/Drivetrain (no forced induction)

Transmission Leak

Old Sep 2, 2015, 09:20 PM
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Transmission Leak

Discovered I have a pretty good transmission leak the other day, anybody know the part number that seals up that black plate?? Also there is a much smaller leak coming from that left area, Anybody have a layout or diagram?
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Old Sep 2, 2015, 10:40 PM
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Originally Posted by lbwilliams44 View Post
Discovered I have a pretty good transmission leak the other day, anybody know the part number that seals up that black plate?? Also there is a much smaller leak coming from that left area, Anybody have a layout or diagram?

MD997740 aka grey RTV silicone sealant...lightly tighten, let set for a bit then torque...never had a leak on 3 rebuilds


has that case been opened or overhauled?

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Old Sep 2, 2015, 10:50 PM
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Negative, not yet at least. Those synchros are going to need some love at some point.
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Old Sep 3, 2015, 11:10 AM
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seems odd that the inspection cover and case/clutch housing mating surface would just leak if it has never been taken apart. in any case, regular old permatex ultra grey is what i use.
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Old Sep 3, 2015, 02:25 PM
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Yeah, glad I noticed it. Picking up that sealant today, also got my RRM brake lines to swap out the old ones today. Once I am actually under the car I am going to make sure that's where it is coming from, but I am 99% sure it is. It's the only place there is any oil.
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Old Sep 7, 2015, 09:10 PM
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Yep, it was the inspection plate. Drove a little over 1k miles on it this weekend over some mountains, no leaks. As far as the other part, I smeared some over the crack lol. So far so good.
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Old Sep 8, 2015, 05:24 AM
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hope it holds up for you...beats draining the oil, pulling it out, splitting it, and resealing...
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Old Sep 9, 2015, 10:13 AM
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Yeah that is what I am hoping for, buuuut it would be a good excuse to replace the clutch/flywheel
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Old Sep 9, 2015, 11:22 AM
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^^ and differential.
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Old Sep 10, 2015, 09:49 AM
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Originally Posted by 2006_RA View Post
^^ and differential.
That would be nice as well, depends if I can find a good package deal there
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Old Apr 2, 2017, 11:09 AM
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Hello Cranswick, I recently brought my 2004 Ralliart to a Mitsu dealer and have an engine oil and transmission oil change. Yes, I know I should have trusted my instinct and have done it myself. Anyway, that black plate is for inspection only, why would an oil leak there after a transmission oil change? What could the dealer have done to cause this. I bought this car with no oil leak under it and after bringing it over there, now i have an oil leak. Now, I will definitely not bring this car thre for timing belt and clutch replacement. What do you suggest that I should do to stop that leak? I mean, if i open it and re-seal that black plate, will it still leak inside and accumulate behind the black plate?
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Old Apr 2, 2017, 11:39 AM
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I think i found the cause, they didn't tighten the oil fill plug...its about a quarter to half turn loose...
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Old Apr 7, 2017, 05:54 AM
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Oil sits on top of that plate, if you take it off, the transmission will drain its fluid...it's for inspection but also to remove/install the reverse idler gear during assembly and disassembly. There is no reason to remove this cover unless the intent is to disassemble the transmission.
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Old Jul 2, 2018, 09:20 PM
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Transmission Leak

So i just bought an Evo 7 and its leaking from the same spot is it an actual Gasket or is it Just a the MD997740 ??
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Old Jul 3, 2018, 03:22 PM
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Originally Posted by Evo7Life View Post
So i just bought an Evo 7 and its leaking from the same spot is it an actual Gasket or is it Just a the MD997740 ??
You just use RTV sealant there, there is no factory gasket for that part.
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