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> MFactory Limited Slip Differential for Porsche 901/914 trans
Chris Hamilton
post Jul 7 2011, 10:48 AM
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Note: I'm not selling these or making any money off of this.

I've been talking to the guys at MFactory http://teammfactory.com/ who make limited slip diffs and gearsets for primarily Honda, but also other makes as well. Their parts are very widely respected throughout the Honda/import community.

Last year I put a helical LSD from them in my Civic Del Sol Si, and was absolutely blown away by how cheap and high quality the parts were. I think I ended up paying $700 for the limited slip shipped to my door.

If we could get together 10-20 orders for these things they'd be willing to make a helical LSD or a clutch-type LSD for a bit more. These would fit 914 transmissions, as well as 912 ( not 912E ) and 1964 -1971 911.

Would anyone be interested in a cheap high-quality forged chromoly diff for 901/914? If so would you want a torque-biasing diff, or clutch/plate-type LSD?
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jpnovak
post Jul 7 2011, 12:19 PM
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I would buy one. I prefer the clutch type that has lockup on accel and decel. adjustable ramp rates would be great.

There is a need for a quality 901-based LSD.
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bam914
post Jul 7 2011, 02:00 PM
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I would be interested. There is another option. Gripper diffs in the UK makes a clutch LSD. http://www.davemacprops.com/dmpgripperapplications.html. Problem is the crappy US dollar right now. It would be $1360.00.
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Chris Hamilton
post Jul 7 2011, 02:17 PM
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That's pretty steep, and VAT is a pretty large percent these days too right?
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Richard Casto
post Jul 7 2011, 02:19 PM
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Interesting. It would be great to have an inexpensive alternative. My concern is that the market for 901 transmission diffs is probably pretty small, but who knows? The development cost on their end might not be that much! For example might their existing design just drop right into a 901 specific carrier?

Richard
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Chris Hamilton
post Jul 7 2011, 02:25 PM
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That's the impression I got. I think if we could get 10 deposits down on these I could send in one of my old diffs and we could get these made.

They also make gear sets, stacks, carbon synchros and all kinds of nice parts. I would imagine if they sell a few of these things they'd be willing to do 904-style mainshafts and other parts too.

Their stuff is pretty highly regarded as being indestructible by the Honda community for monster turbo motors and drag racing, so to get them making parts for the 901 would be excellent.
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hcdmueller
post Jul 12 2011, 05:10 AM
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You don't pay VAT if you are outside of Europe. So take at least 17% off that price. Shipping and customs may come back to bite you though.
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jpnovak
post Jul 12 2011, 11:19 AM
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You might want to consider to post this on PP or Early911S registry sites to attract more potential buyers. The 901 LSD is often discussed with few real reasonably priced options.

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Chris Hamilton
post Jul 12 2011, 12:34 PM
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I think I'll post it there soon. Have just been very busy lately.

If there is any reasonable interest we could start a group-buy thread in the main forum.
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7275914911
post Jul 12 2011, 12:50 PM
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If i was to spend this kind of money on my car at this time this is what it would be on....
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J P Stein
post Jul 12 2011, 01:07 PM
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QUOTE(7275914911 @ Jul 12 2011, 11:50 AM) *

If i was to spend this kind of money on my car at this time this is what it would be on....


A guard TBD? ................


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Chris Hamilton
post Jul 12 2011, 01:32 PM
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Yes JP, like the guard TB diff, but a whole lot less expensive.
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Pudge
post Jul 12 2011, 01:48 PM
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I'm interested.
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J P Stein
post Jul 12 2011, 04:37 PM
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"Like" & "a whole lot less expensive" don't fit well together. I got a good deal on this one but wouldn't have settled for less.....but feel free to do the R&D for some outfit.
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SirAndy
post Jul 12 2011, 04:49 PM
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QUOTE(J P Stein @ Jul 12 2011, 03:37 PM) *
I got a good deal on this one but wouldn't have settled for less.....

What's a "good deal" for a Guard TB? (IMG:style_emoticons/default/idea.gif)
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Chris Hamilton
post Jul 12 2011, 05:14 PM
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QUOTE(J P Stein @ Jul 12 2011, 03:37 PM) *

"Like" & "a whole lot less expensive" don't fit well together. I got a good deal on this one but wouldn't have settled for less.....but feel free to do the R&D for some outfit.


MFactory have an excellent reputation in all kinds of racing. I've never heard of one of their diffs failing, even in 700+hp drag cars.

If doing the R&D means everyone with a 901/914 can get a great diff for under a grand, then it's entirely worth it.

If we can get a group buy going for these I'm certainly going to be in for two.
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SirAndy
post Jul 12 2011, 08:05 PM
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I'm looking for a TB diff for my 915 ... (IMG:style_emoticons/default/idea.gif)
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Randal
post Jul 12 2011, 09:21 PM
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QUOTE(SirAndy @ Jul 12 2011, 03:49 PM) *

QUOTE(J P Stein @ Jul 12 2011, 03:37 PM) *
I got a good deal on this one but wouldn't have settled for less.....

What's a "good deal" for a Guard TB? (IMG:style_emoticons/default/idea.gif)



Call up Mark and tell him you want the pricing from last January.

Their TB differentials work.
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Chris Hamilton
post Jul 12 2011, 11:52 PM
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I have no problem with the reliability of the guard units, but the last time I bought a diff from them it was $1750 and took a long time to actually ship.

The diff from MFactory in my honda was $650 and came in 4 days.
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Woody
post Jul 13 2011, 12:08 PM
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I would be interested in a clutch type with different ramps.
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