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Drivetrain clunking 1st gear

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Old Sep 30, 2018, 01:06 PM
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Originally Posted by CaptainSquirts
So is it possible for metals to go into the transfercase/front diff? I thought I read somewhere the front diff and transmission share the same fluids and if that's the case I would be worried about the front diff having some metal left in it.
No Sir. The TC uses its own separate fluid from the Trans & has its own drain plug
Old Sep 30, 2018, 01:17 PM
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Yes. The transmission has a fluid port that sends fluid into the front diff. The front diff is inside the tcase. This fluid only goes to the diff though, it does not mix with the gear oil for the tcase ring and pinion.
Old Sep 30, 2018, 02:31 PM
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Should the front diff be a concern now with the contaminated oil?
Old Sep 30, 2018, 03:00 PM
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Originally Posted by CaptainSquirts
Should the front diff be a concern now with the contaminated oil?
Being that you will be pulling the Trans, just plan on draining the TC & filling w/fresh fluid (trans fluid & TC fluid do not mix)
Old Sep 30, 2018, 03:09 PM
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Originally Posted by MinusPrevious
Being that you will be pulling the Trans, just plan on draining the TC & filling w/fresh fluid (trans fluid & TC fluid do not mix)
Yea I get that. But since the front diff and transmission share the same fluids then wouldn't metal shavings get into the front diff(front diff is inside the transfercase).
Old Sep 30, 2018, 03:53 PM
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Originally Posted by CaptainSquirts
Yea I get that. But since the front diff and transmission share the same fluids then wouldn't metal shavings get into the front diff(front diff is inside the transfercase).

Always better to discuss using a schematic

I went through this exercise a few threads ago .

Now, the center diff & front diff could possible have shavings so the Trans shop should be made aware of the transmission issue

Sean is correct, in that, the front diff gets its oil from the Trans

Are we on the same page or did i get this messed up, again LOL


Last edited by MinusPrevious; Sep 30, 2018 at 04:25 PM.
Old Sep 30, 2018, 04:34 PM
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Naw you explained it fine lol. Thanks
Old Sep 30, 2018, 06:24 PM
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It's fine. The transfer port is small. Big chunks wouldn't go through it.
Old Sep 30, 2018, 09:13 PM
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All we need is a thread with step by step on how to build tranny & TC.
Old Oct 2, 2018, 07:34 AM
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So I'm thinking about sending all 3 big components. The tranny, transfercase and rear diff.

The transmission just get it rebuilt, nothing special but maybe carbon syncrho's not sure yet on that since not a lot of info about that has been out yet for our car.

The transfercase I was thinking about getting the wavetrac but I'm only running 340whp and I don't plan on going any higher and I don't lift my front inner wheel so is there any point in getting the front diff replaced?

As for the rear diff I would like to go the whole shabang with TRE, the oil sight, 12 plate and billet side cover but I would like to speak to him about a couple of things before I ship everything but having him personally email/call you (mind you its only been 3 days) so far seems a little tough to get a hold of.
Old Oct 2, 2018, 08:05 AM
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I like your thoughts on doing all 3 at once. Yeah, TRE is one of the best but its standing room only there & they do not accept phone calls LOL

Might be best to fill out their info sheet & send that in requesting a telephone call ASAP. On that sheet i would tell him, "Hey, would like to do bus w/ya but need to speak w/you via phone"
Old Oct 2, 2018, 08:18 AM
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I just requested a quote for a rear diff. He called before I could close the browser. Lol
it just depends. I emailed first thing in the morning.
If you request a quote, you should receive a call pretty quick. Usually.
Old Oct 2, 2018, 08:19 AM
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Yea I filled the sheet out requesting a quick call, but you just get an automated reply so waiting a couple of days for him to reach out. Is he the only one that can do the billet side cover and glass mod?
Old Oct 2, 2018, 08:24 AM
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Originally Posted by CaptainSquirts
Yea I filled the sheet out requesting a quick call, but you just get an automated reply so waiting a couple of days for him to reach out. Is he the only one that can do the billet side cover and glass mod?
I think so. I'm foregoing the billet cover because I don't launch my car and make less than 400wtq. Also skipping the cover because I don't mind filling the diff the old-fashion way ,since I only do it once per year ,or so. Cool options ,though. No doubt.
Old Oct 2, 2018, 12:38 PM
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The billet side cover helps get a lot more oil into the diff clutches, helping them last longer. It is is a good mod regardless of car use, drag or road race.

The site glass cover makes it ridiculously easy to properly fill the rear diff. And it ensures you have the proper oil level. Not trying to over fill past the stock fill hole and trying to shove the plug in while fluid runs out. IIRC, this is only $100. And well worth it since you can also quickly check fluid condition through the site glass.



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