MFactory upgraded gearsets - Page 16 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 03-10-2018, 12:48 PM   #301  
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Quote:
Originally Posted by M2Ken View Post
I am not sure if it is appropriate to cross post, and if not please delete.

howver, it might appear PPG could be coming related to 6-speed gearsets.

another complete gearset option in the works (Jacks Transmissions - Scion FR-S Forum Subaru BRZ Forum Toyota 86 GT 86 Forum AS1 Forum - FT86CLUB
Unfortunately a direct swap is not going to be possible from one platform to another. Pic shows 4 out of the 5 AZ6 transmission output shafts (missing: IS200) used in the last 20-ish years. Note the difference between them, which also have an integrated 3rd and 4th gear. Some industrious individual may be able to work out how to make a Frankenmission out of these units, and if we have time to play around with it we'll do it since we have all of the parts on hand, but it may not be a priority.

We are still 2-3 months out on receipt of the prototype set from PPG, and once we get it we are going to try to break it. When we figure out what it can handle, and what final cost will be, we'll see if there's a big enough call for it to cross over to other platforms and work towards that if so.
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Old 06-09-2018, 11:24 PM   #302  
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Update

After a few months of street and track testing (by 949 Racing, Andrew Kidd and a few select street cars), we are now happy to announce final approval of our 3.33 final drives (Part No.: MF-TRS-02F33)!

these do NOT have the same fitment/quality issues as experienced with the previous batch of final drives. However, as this is a sample batch, quantities are very limited, so they will be offered on a first-come-first-served basis. Again, I am not a sponsor on this forum though, so please do not ask any sales-related questions.

there is one caveat though, and you need to be aware of this:

Noise - The oem final drive is virtually silent due to the angle of the gear teeth. With our final drive, the helix angle is not as great, therefore there will be a small amount of whine/noise. Note that this is whine/noise only, and NOT vibration. Unfortunately, it is hard for us to tell you exactly how much noise as:

1) Every car has a different setup/modifications that affect interior/exterior noise
2) Every driver has different driving preferences (e.g stereo, windows up/down etc etc)
3) Every driver has different noise sensitivity

What I can say is this:

Track Car - If your car is used mainly on the track, then this is a non-issue. Just enjoy the experience of the new gear ratio

Street Car - If you are already used to a noisy interior (be it stereo, exhaust etc), then this is a non-issue. If you are not, but you think you "may" be fine with a little whine/noise coming from the rear end, may I suggest riding shotgun in a Honda with a set of MFactory gears (be it a Civic with close ratio gears, or an S2000 with a final drive). This will give you the closest experience of the level of whine/noise and whether you find it acceptable or not. Again, every driver is different, so it's hard to answer the inevitable questions regarding this after I've posted this reply! haha

If you are wanting an oem-level of noise/comfort, then unfortunately, this modification is not for you. And if you are wondering why we do not just increase the helix angle to be like oem, the reason simply comes down to cost; the tooling cost alone would make this impossible.

If you have any questions, please don't hesitate to ask!

Last edited by MFMike; 06-09-2018 at 11:45 PM.
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Old 06-09-2018, 11:37 PM   #303  
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I would like a set
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Old 06-09-2018, 11:43 PM   #304  
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You have PM, order finger hovering
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Old 06-09-2018, 11:47 PM   #305  
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These are the same as the 3.30s listed at teammfactory.com? I hope so, I just clicked order
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Old 06-10-2018, 03:45 AM   #306  
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They are, yes
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Old 06-10-2018, 08:38 AM   #307  
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Does this mean a production run is following?
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Old 06-10-2018, 08:44 AM   #308  
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Would be cool to have someone do a side by side run on a street application of cabin noise. I understand the aforementioned points just seeing if anyone would be willing to do it. Very interested.
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Old 06-10-2018, 09:02 AM   #309  
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Quote:
Originally Posted by M2Ken View Post
Does this mean a production run is following?
Nothing concrete at the moment
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Old 06-10-2018, 12:01 PM   #310  
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Nothing concrete at the moment
nothing concrete => I better order now vs. deal with uncertainty. Order submitted and paid.
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Old 06-10-2018, 06:49 PM   #311  
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That ratio would pair well with a KMiata BMW 5 speed, fwiw.
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Old 06-10-2018, 07:15 PM   #312  
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Speaking as a former BMW nerd that came to the miata dark/gay side, the US spec E30 M3 with the OD gearbox (265) runs a 4.1 diff. The CR 265 with a 1:1 5th runs a 3.25. That gets you about 150mph but with a 205/65 15 tyre. The evo II has a 3.15. Redline 7200rpm.

my 323i had the 260 box and stock has a 3.46. Again, bigger tyres tham a miata. Redline 6500rpm

finally, one of those BMW gearbags would be a prime candidate for a samsonas gearset.

Samsonas Products

and they sound ******* great

and it looks liek VAC motorsports is a US distributor

https://store.vacmotorsports.com/tra...ions-c188.aspx

Last edited by msmola2002; 06-10-2018 at 10:17 PM.
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Old 06-11-2018, 07:19 AM   #313  
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Quote:
Originally Posted by msmola2002 View Post
Speaking as a former BMW nerd that came to the miata dark/gay side, the US spec E30 M3 with the OD gearbox (265) runs a 4.1 diff. The CR 265 with a 1:1 5th runs a 3.25. That gets you about 150mph but with a 205/65 15 tyre. The evo II has a 3.15. Redline 7200rpm.

my 323i had the 260 box and stock has a 3.46. Again, bigger tyres tham a miata. Redline 6500rpm

finally, one of those BMW gearbags would be a prime candidate for a samsonas gearset.

Samsonas Products

and they sound ******* great

and it looks liek VAC motorsports is a US distributor

https://store.vacmotorsports.com/tra...ions-c188.aspx
Too many digits on the left of the decimal. And the gear boxes are plenty strong for a Miata already, just that a 1:1 5th gear made it difficult for many users to use factory diffs. These rear gearsets would maybe keep some people from swapping to getrag or Ford diffs for the taller ratios and higher top ends.
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Old 06-11-2018, 10:11 AM   #314  
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This is awesome news. Pair the 3.3 gears with our new Miata diff mount that deletes the PPF, and a cheapo bulletproof ZF 5-speed trans would play really well with a turbo BP setup. I love seeing new options come to the table for these old cars.
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Old 06-13-2018, 08:43 AM   #315  
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Very cool to see this come full circle. Would this be overkill in a 150hp N/A application? The goal would be lower cruising RPM on highway. Currently have a 5 speed, could go to 6. Would this give up too much of the characteristic quickness from the low end that makes the car fun to drive? Was originally thinking 3.63 but this sounds easier to source.
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Old 06-13-2018, 08:58 AM   #316  
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3.3 + 6 speed is essentially the same as a 5 speed with 4.10 gears 1-5
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Old 06-13-2018, 12:01 PM   #317  
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On a five speed I don't like it. 3.3 rear will make first gear very long. Actually every gear will be long. It will be like a normal five speed, only without first gear. And with a very long gear tacked on the end. Just dumb and inconvenient IMO.

On a six speed it's a no brainier. The shortness of the six speed gears and the long 3.3s cancel out and you basically end up with OEM five speed gearing, but with six speed strength and an extra gear for highway cruising.

I just put Xidas in the car so I need to get the wife a purse or something before I do this. But it's on the eventual to do list.
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