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MLRC Forum
https://www.mlrc.ca/cgi-bin/yabb/YaBB.pl General >> Rally >> magic viscous fluid https://www.mlrc.ca/cgi-bin/yabb/YaBB.pl?num=1236986287 Message started by big_Ian on 03/13/9 at 18:18:07 |
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Title: magic viscous fluid Post by big_Ian on 03/13/9 at 18:18:07 Does any one out there know where the viscous coupling fluid that lives in a subaru center diff can be procured? need some for the front diff of the cosworth |
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Title: Re: magic viscous fluid Post by RyanHuber on 03/13/9 at 20:02:20 Ian, if it's a manual gearbox in a subie, it's just gear oil. I use Redline stuff myself. Auto subies use ATF in the tranny and gear oil in the diff. Nothing special. That said, maybe there is something special for the cozzie... |
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Title: Re: magic viscous fluid Post by Slowpoke on 03/13/9 at 21:22:33 I'm not sure what you're trying to do...? It sounds like you're trying to drain the used fluid out of a Subaru center diff to put it into the front diff of a Cosworth?? Ryan's assessment is right. On manual transmissions, front and center diff fluid is shared with the transmission on a Subaru. Try this blend in a stock Subaru manual transmission: 1 quart Redline MT-90 (Friction modified for the synchros) Then fill to proper level with Amsoil 75W90 Severe Gear (Approx 3-4 litres.) Subaru Automatics: Amsoil ATF for the tranny, Amsoil Synthetic 80W90 for the front differential. If this IS for a Cosworth, Dan Sprongl should know what it needs. |
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Title: Re: magic viscous fluid Post by Daniel_Buehler on 03/13/9 at 22:19:23 The center dif DOES have magic fluid. The dif is sealed and cannot be serviced. ie. pooch the fluid and you've pooched the dif. That's why you've never seen the VC fluid for sale. Ian, I'm no cozzie expert, but I doubt that the Subaru VC fluid is what you need. |
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Title: Re: magic viscous fluid Post by RyanHuber on 03/13/9 at 22:40:19 Huh, learn something new every day! |
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Title: Re: magic viscous fluid Post by dan sprongl on 03/14/9 at 07:18:52 Hi Guys, Read Ian's request again!!! Buehler is right, Ian is looking for the fluid that is in VC of the subaru centre diff. As the front diff of his cosworth needs to be overhauled and it uses a similar fluid. He wants to fix the diff and see if he can find the fluid to do it with. It is not the standard clutch type LSD where the clutches can be replaced and shimmed. He is NOT looking for the standard gear lube change. And in the cosworth the front diff is independant of the transmission. The Cosworth uses a transfer case and a small prop shaft. ( and in stock Cosworth transmission set up there are two different fluids used, in the rally set up only one fluid was used as there was some re-working of the internal case for better flow and lubrication) Saying that, it is the fluid to rebuild the internals of the LSD diff of the Cosworth front diff. Dan Four Star Motorsports Inc |
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Title: Re: magic viscous fluid Post by Slowpoke on 03/14/9 at 10:37:51 Slowpoke wrote on 03/13/9 at 21:22:33:
See Dan? I was right. ;D |
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Title: Re: magic viscous fluid Post by Phil D on 03/24/9 at 17:52:29 Guys, the manual gearbox on my Forester road car is getting very notchy to the point where I can feel each tooth as it goes into some gears. I note above the references to mixing the oil for the gearbox. Any suggestions for helping here? I'm assuming some of the syncros are on their way out (and it gets worse the colder it gets!) Car has done 147k with full service history. I found this advert for an adative but I'm not sure they'll make any odds (http://www.bgprod.com/products/driveline.html). Greatful for advice. Cheers |
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Title: Re: magic viscous fluid Post by Mark-7 on 03/24/9 at 19:09:36 Stop by my place this weekend Phil and we'll check it out. |
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Title: Re: magic viscous fluid Post by Robin_Fleguel on 03/24/9 at 21:19:47 The fluid is some sort of silicon - it shears when the plates inside the unit (splined alternately for every second plate) experience different speeds from one-another - thereby allowing adjacent plates (each splined to a different end of the unit) to lock-up - and turn together. Miller found some in California somewhere - it was stoopid expensive (we didn't use it all - might still be in the cabinet that was in the Elmira shop). Replacing it made the unit work again. It's probably a Ford RS 'part', but I think all those sealed viscous units are actually made by GKN? - maybe someone there can help you out? Also - since they make them all (AFAIK), maybe there's a replacement out of another car? You could also try Vandlingham (sp?) in Seattle - I remember talking to him about it a few yrs back. Robin |
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Title: Re: magic viscous fluid Post by Jeff_Hagan on 03/24/9 at 21:25:28 Robin_Fleguel wrote on 03/24/9 at 21:19:47:
FYI - John Vanlandingham's contact info is here: http://www.rallyrace.net/jvab/ |
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Title: Re: magic viscous fluid Post by big_Ian on 03/25/9 at 12:42:43 Got the "stuff" itwas in back cabinet works now yea! se ya all at shag me ville! thanks |
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Title: Re: magic viscous fluid Post by English on 03/25/9 at 12:43:03 I just spoke to the guy that I bought my Cosworth from. and basically, he doesn't know. He doesn't work with the 9" plated or Locking diffs in the front. In mine, I have a regular front and rear diffs which take normal gear Oil 80W or 90W. The center Diff takes ATF And before anyone asks, NO it's not coming to Shannonville! |
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Title: Re: magic viscous fluid Post by overthehill on 03/25/9 at 16:57:18 James Drake wrote on 03/25/9 at 12:43:03:
Hmmmmm, waiting for Defi? |
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Title: Re: magic viscous fluid Post by jgardhouse on 03/25/9 at 17:26:21 Doubt it. James claims it will never touch gravel. Every time he says this, I die a little inside. ;D |
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Title: Re: magic viscous fluid Post by Robin_Fleguel on 03/25/9 at 17:26:24 Hey James - can I borrow your car to go to the beer store? Keys in it? hehehe |
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Title: Re: magic viscous fluid Post by English on 03/26/9 at 19:25:21 Hey Robin: You can borrow the VW Rabbit anytime you like. :) |
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Title: Re: magic viscous fluid Post by NMathew on 03/30/9 at 14:35:07 j_gardhouse wrote on 03/25/9 at 17:26:21:
LOL....give it time.... |
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