How-To: Focus MTX-75 Duratec clutch, Phantom Grip, and Poly mount install - Page 6 - Focus Fanatics
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Old 12-07-2008, 09:35 AM   #51
1turbofocus
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I have removed 5 of these with broke diff all on turbo cars and hard launches , you are trying to go from a single traction diff to pulling on both axles this will cause the diff to break and when it does 5 out of the 5 I have changed took there trans with it and I have seen this with dozens of other types

The pressure puts stress on the brass bushings between the spider gears and the Diff housing wareing them out , you would be better off weling the spider gears so they cant turn because when they do with the load the pg puts on then its only a matter of time , the longest I know of is 2.5 years and the least is 3 months

I wish you the best , but sometimes its best to not go cheap on some parts , and some you can get away with

Tom
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Old 12-07-2008, 12:08 PM   #52
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Thanks for the input Tom, it's good to hear from experience.
If I had known the failure rate with the PG was that high I probably would not have gone with it.
For the time being I'll stick with it, but I predict a change to a Torsen later on.
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Old 12-07-2008, 05:43 PM   #53
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ok wait, so now the PG is bad? didnt honhon get one, saying it got great writeups in various mags?
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Old 12-07-2008, 05:55 PM   #54
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all those write ups generally refer to the short term gains, the phantom slip is bad news in the long run. That's why I'm going with the quaife, top quality and it acts like an open diff until I punch it.
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Old 12-07-2008, 06:28 PM   #55
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Quote:
Originally Posted by NemesisEnforcer View Post
ok wait, so now the PG is bad? didnt honhon get one, saying it got great writeups in various mags?
I personally have nothing negative to say about it yet.
Thus far it's performed as advertised.
I'll post if anything bad happens.
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Old 12-08-2008, 10:05 PM   #56
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thanks, please do...but i hope nothing does happen!
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Old 12-09-2008, 02:01 AM   #57
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any time i do a quick burn on the street or the track i get twin rugs an i'm still open diff " stock " unless i'm putting down serious power that "requires" a LSD i dont need it.

don't get me wrong I Envy you guys that do a swaps an take the time to do a neat an tidy write up on how you did it so others can get an idea just how much work is involved before attempting it them selves.Along with this write up i have a ton of info on how to do the clutches/flywheels on the Focus's w/D-tec's as im accustomed to Escort's an Chevette's
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Old 12-10-2008, 05:45 PM   #58
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Quote:
Originally Posted by 1turbofocus View Post
My opinion of the phantom grim is it is a total waste of time , It is nothing more then a set of springs pushing apart against the spider gears and do little to aid in traction

It is not a limited slip , a posi unit or anything of the kind , everyone I have taken out in the MTX were changed because the factory diff broke , the diff is the weak point if your going to go through the trouble to add something add something that works and strainghtends the weak point

Oh and sporadic I dont sell any of these so it isnt like im saying this because I want you to buy something , just wanted to clear that up

Tom
+1 on that

also like to add that grinding/sanding/ect the PM/sintered spider gears is a horrible idea. the sintering is only on the outside of the gears, the inside is just loosly compacted potmetal, and will desintigrate rather quickly.

the basically compress some steel powder with a kind of "solder" (copper, brass ect) into the shape orf the gears pluss several thousandths, then they heat these little cakes to the bonding point of the two mtals, then pop them in a mold the sized of the final desired size, and compress them down again while at temp. see how grinding the hard outside is a bad idea?

to the guy who said his open diff spins both tires, yes, they all do that, thats how they work, when your going straight they spin both tires, when you trun they tranfer all power to the outer on.

if you don't like the ATB, there are always the KAAZ clutch types, that will give you a posi effect.

the PG is sort of a cross between a simple clutch type and a locker, but in a horrible way. it's basically using the face of your (newly ground down and further weakened powder metal) spiders and it's face instead of a clutch set, horrible idea.

it might be a little better idea in an early type diff (95-97 contour) with the cut steel gears, or the uprated euro units (also cut gears)

I personally wouldn't go with one though, I snapped the center shaft in an early cut diff with a high mileage 2.5 in my 'tour, which made a hole in my case big enough for you to shove your head in.

basically, if you want performance, get the KAAZ, if you want durability, get the Quaife, if you want a hole in your case the size of your head, get the phantom grip.

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Old 12-10-2008, 05:58 PM   #59
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Thanks for the replies everyone.
It's always good to hear from a lot of people and not just base things on one person's experience.
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Old 02-03-2009, 09:20 PM   #60
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Hey sporadic, Any update?

I had a Phanom grip on my 2000 Focus, put well over several hundred drag launches on it
went over 60k before my trany died. It still wanst clear if the PG cause it to die.

I have another to go in my 1004 Focus, just waiting to get a clutch to do it all at once.

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