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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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MikeSpraggi
post Jul 14 2011, 12:21 AM
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I'm interested.
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vintage914racer
post Sep 12 2011, 03:56 PM
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Did anyone ever try out a mfactory diff for their 914?
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J P Stein
post Sep 13 2011, 08:48 AM
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I'm a CSOB.
I worked in a machine shop for a lot of years.
I *know* what it costs to make mechanical objects correctly using good materials, processed properly....plus a mark-up to insure the business stays in business. I've spent enough time in the retail end to know about the mark-up added to insure that they stay in the retail business. I would encourage all my competitors to buy an LSD that costs 300 bucks to manufacture.....the PRC will love you too. (IMG:style_emoticons/default/biggrin.gif)
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Randal
post Sep 13 2011, 09:54 AM
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QUOTE(Chris Hamilton @ Jul 7 2011, 01:17 PM) *

That's pretty steep, and VAT is a pretty large percent these days too right?



UK VAT is 17.5% now. But when I was in the UK you could get VAT back when you exported a purchase.
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grantsfo
post Sep 13 2011, 01:09 PM
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QUOTE(Randal @ Sep 13 2011, 08:54 AM) *

QUOTE(Chris Hamilton @ Jul 7 2011, 01:17 PM) *

That's pretty steep, and VAT is a pretty large percent these days too right?



UK VAT is 17.5% now. But when I was in the UK you could get VAT back when you exported a purchase.

VAT only applies to sales inside of UK or EU. No VAT charged if exported to US. But if you are being legal you will have to declare California Sales tax. Everyone does that right? No tax cheats here I'm sure. LOL!
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grantsfo
post Sep 13 2011, 01:16 PM
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I have seen the Wavtrac product and it has been tested in Grand Am 370Z's. Very nice quality and made in USA. I highly reccomend taking a look at their product. Nissan Motorsports chose them for Torsen diff supplier. The team tested lots of diffs and this was one of the top choices.

http://www.wavetrac.net/application.htm

This post has been edited by grantsfo: Sep 13 2011, 01:23 PM
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givory
post Sep 14 2011, 06:07 AM
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I and another 914 racer in installed the WaveTrac together this year with pleasing results so far.

My car is a single plug 2.0L six narrow body vintage racer with very humble power output. So compared to my previous open diff, the difference is not huge, since I never had a problem with lifting a rear wheel. But the car is more stable hustling into corners under braking - especially high speed corners where the car seems less twitchy. But for my friend's car - he has seen a huge improvement. With another 50hp on a lighter twin plugged gt car [running a different class], his used to have big wheelspin on corner exit. No more. His lap times have dropped dramatically, and he really notices an improvement. Can't speak to longevity yet. And of course being around $500 cheaper helps the cause.
Gavin
VARAC #58
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grantsfo
post Sep 16 2011, 10:00 AM
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I have seen wave trac out of the race cars after multiple track days. These are cars that make over 400 WHP. They look like new. The one comment back from drivers on wave trac is that they dont do well if you are running over berms on sides of the track but if you are on track they work great.

The prefered LSD is OS Giken. Now that we have mine sorted out I have to agree. Its the best lsd I have expereinced. The OS Giken is so tunable its incredible. Mine is tuned for AX and I have zero push. The professional race drivers and the engineers pretty much agree. If you want an LSD that you put in typical street/track car go with Wave Trac. It will last a long time and is very good quality. If you want top of the line race car LSD with adjustbility go with OS Giken as you can tune the OS giken to do any thing you like. All the Grand Am Nissans are using OS Giken and thats after testing almost every available LSD on the market for these cars.

This post has been edited by grantsfo: Sep 16 2011, 10:07 AM
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sixaddict
post Sep 16 2011, 05:53 PM
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Interested if this goes forward



QUOTE(grantsfo @ Sep 16 2011, 08:00 AM) *

I have seen wave trac out of the race cars after multiple track days. These are cars that make over 400 WHP. They look like new. The one comment back from drivers on wave trac is that they dont do well if you are running over berms on sides of the track but if you are on track they work great.

The prefered LSD is OS Giken. Now that we have mine sorted out I have to agree. Its the best lsd I have expereinced. The OS Giken is so tunable its incredible. Mine is tuned for AX and I have zero push. The professional race drivers and the engineers pretty much agree. If you want an LSD that you put in typical street/track car go with Wave Trac. It will last a long time and is very good quality. If you want top of the line race car LSD with adjustbility go with OS Giken as you can tune the OS giken to do any thing you like. All the Grand Am Nissans are using OS Giken and thats after testing almost every available LSD on the market for these cars.
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J P Stein
post Sep 17 2011, 01:55 PM
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And how are the Nissains doing at the Grand Am.....Continential Challenge?
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jmill
post Sep 18 2011, 03:11 PM
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QUOTE(grantsfo @ Sep 16 2011, 11:00 AM) *

I have seen wave trac out of the race cars after multiple track days. These are cars that make over 400 WHP. They look like new. The one comment back from drivers on wave trac is that they dont do well if you are running over berms on sides of the track but if you are on track they work great.


Good info here. Didn't even know about them. The $1300 price tag isn't that bad either.
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MikeSpraggi
post Sep 22 2011, 06:26 PM
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Any movement on the MFactory LSD?
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Chris Hamilton
post Sep 22 2011, 06:52 PM
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When I talked to a rep at MFactory a while back the only thing they needed was a stock diff ( which I can ship to them, no problem ) and hopefully some pre-orders so they know there will be enough interest for the product.

The easiest way to accomplish this would be for someone to start a group buy thread and hopefully get a dozen or so people to put in a deposit on these things.
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patrick3000
post Sep 28 2011, 04:13 PM
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QUOTE(Chris Hamilton @ Sep 22 2011, 08:52 PM) *

Someone to start a group buy thread and hopefully get a dozen or so people to put in a deposit on these things.


I'm in
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MikeSpraggi
post Oct 4 2011, 01:35 PM
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If we're talking around $700, I'm in.
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Eddie914
post Oct 10 2011, 06:40 PM
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If is anywhere near the price of the diff for your Honda ($650), I am in!

I don't have the money (after paying the kid's tuition's) but I have lots of parts to sell ... it will get me off my butt selling parts!

Cheers,

Eddie
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gothspeed
post Nov 3 2011, 01:48 PM
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What is the status of this effort?

What direction has this taken on the type of diff to be made?

I am in for certain on a clutch type as that was what my 930 had ...... and I really liked it (IMG:style_emoticons/default/smile.gif)!!
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tavoman27
post Mar 2 2012, 05:40 PM
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I'm in for a clutch type LSD. please keep me posted!
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Woody
post Aug 22 2012, 05:31 PM
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Has anything ever come of this?
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john914somers
post Aug 24 2012, 12:07 PM
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Count me in. The clutch type would be preferable Let me know what I got to do. Thanks a metric ton!!!
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