6-speed/3.63 speedo gear fail *Now with more win than ever!!!* - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 11-23-2009, 10:59 AM   #21
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Yes, built and tested on my car. Running on plenty of other cars--I ran a group buy when I was at mazmart, sold lots of them. I also provided Rotornut with his.
Did you work with Bill @ Miataroadster? We are talking about a mechanical sender, correct? One of the pics on this thread looks like a electronic sender.
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Old 11-23-2009, 11:01 AM   #22
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Holy crap you had to list your gear engineering history to say that gear mesh is important?
Well you know, calling BS is normal around here (a good thing) so I nipped that in the bud so to speak. I could have gone into excruciating detail but decided against that
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Old 11-23-2009, 11:01 AM   #23
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No.
Yes.
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Old 11-23-2009, 11:25 AM   #24
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We are talking about a mechanical sender, correct? One of the pics on this thread looks like a electronic sender.
Read my prior post, #7, those are the same part numbers Ben is talking about. It works. It's mechanical. The speedo reads about 2 mph slower at 80mph according to the GPS but that's about it.
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Old 11-23-2009, 11:51 AM   #25
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Read my prior post, #7, those are the same part numbers Ben is talking about. It works. It's mechanical. The speedo reads about 2 mph slower at 80mph according to the GPS but that's about it.
Very interesting, I have the white 19 tooth gear and the offset housing but they didn't mesh. I'll have to check my part numbers tonight and bounce them against yours.
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Old 12-28-2009, 12:58 PM   #26
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Just bought a 6 speed gearbox + 3.6 diff

after reading all off this i don't understand the problem...
A lot of effort to get a suitable transgear.

The 89-91 miata has a 20 tooth gear (including transmitter) according to solomiata website... Isn't this what we are looking for.
As for 89-91 owners.. We need an other gear (with 17-18 teeth..)
That could be tricky...as it is only found in 84-85 RX7...
Is this PNP???

Correct me if i am wrong...
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Old 07-10-2011, 12:03 PM   #27
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1011-17-442A - This is the sleeve/housing that will position the gear in the proper location to engage the gear within the transmission. If the sleeve that comes in a 5-speed transmission is used, the smaller 6-speed gear will be free-floating and will not engage. Thus, no readings.
M502-17-441 - This is the actual gear.
9922-20-214 - Spring Pin for holding the gear in the sleeve.
9958-60-8166 - Oil Seal for inside the sleeve.
1011-17-443 - O-Ring for the outside of the sleeve.
Has anyone successfully obtained these parts? I keep calling a few different dealers and none seem to give a **** about making some money considering I'm trying to buy 2 sets.

I picked-up another 6/3.63 combo for my daily to make runs from Dallas to Houston more tolerable at 90mph.
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Old 09-06-2011, 04:17 PM   #28
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Ok, I put this in the turbo car yesterday and it's a little off. It reads 80mph at 75mph (according to my G2X). Can it get any better or is this the best we can do, which is good enough I suppose.
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Old 09-06-2011, 04:30 PM   #29
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Earlier in the thread you had the M503- gear, are you using that gear or the M502? What size tires?
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Old 09-06-2011, 04:43 PM   #30
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I'm using m502

205/50/15
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Old 09-06-2011, 05:22 PM   #31
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Weird, that was the same gear and tire size used on my NA, however I had the opposite condition, the speedometer showed around 78 mph when the GPS showed 80 mph (as posted above). Maybe pop open the cluster and adjust the needle? I'm sorry, I don't know what else to suggest, mine was only 2 mph off so I never messed with it. Or if you still have the M503 gear you could try swapping it out and see if it gets things closer.
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Old 09-06-2011, 06:46 PM   #32
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This is pretty good and you helped. My last speedo read 15mph low at 80. I'm going to buy another set for my daily and it's pending 6-3.63 swap.
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Old 09-06-2011, 08:06 PM   #33
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Tires n wheels will also throw off reading. Get off the 22s
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Old 09-06-2011, 08:46 PM   #34
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Hustler, where are you finding all these 6-3.63 swaps here in Dallas? I realize you're probably buying the gearsets from MazdaMotorsports, but where is the abundance of 6 speeds for sale?
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Old 09-06-2011, 08:57 PM   #35
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Hustler, where are you finding all these 6-3.63 swaps here in Dallas? I realize you're probably buying the gearsets from MazdaMotorsports, but where is the abundance of 6 speeds for sale?
I think I have them all actually with 2 spare 6-speeds in the garage, lol. I bought one set of gears from Mazdacomp and the other from a guy who thought he was selling me a 3.90, half a year later I counted the teeth and it was a 3.63. I score trans from an SM shop for $400 and the other for $600 from an auto-x guy.

The daily set-up is going to be part of "operation hypermile" with the VVT & MS3X swaps coming down the pipe.
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Old 09-06-2011, 09:26 PM   #36
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I know my setup reads a couple of MPH on the high side based on speedo reading vs. "your speed is" police sign, but it's certainly within a couple percent.
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