Changing a 6 Speed over to a 5 Speed

Chat to do with your MX5/Miata/Eunos Garage Ride(s).

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de Bounce
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Re: Changing a 6 Speed over to a 5 Speed

Postby de Bounce » Sat Feb 20, 2016 2:50 pm

greenMachine wrote:Maybe re-run that one with a 4.1 for the 8A ... :wink:

:mrgreen:
Numbers for the 8A tally with what Guran posted HERE
Am I missing something?
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2001 NB8B in Crystal Blue - Sold :(
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rascal
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Re: Changing a 6 Speed over to a 5 Speed

Postby rascal » Sat Feb 20, 2016 3:12 pm

de Bounce wrote:
greenMachine wrote:Maybe re-run that one with a 4.1 for the 8A ... :wink:

Am I missing something?

Yep, the NB8A 5 speed came from the factory with a 4.1.

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hamx5ter
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Re: Changing a 6 Speed over to a 5 Speed

Postby hamx5ter » Sat Feb 20, 2016 3:24 pm

I think 3rd gear for me is 113km/ph max
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rascal
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Re: Changing a 6 Speed over to a 5 Speed

Postby rascal » Sat Feb 20, 2016 3:39 pm

hamx5ter wrote:I think 3rd gear for me is 113km/ph max

Sounds right.

My NB8A with 6 speed and std 4.1 diff shows following speeds at 7000rpm.

1st 49.3
2nd 82.1
3rd 112.6
4th 147.5
5th 185.4
6th 219.9

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de Bounce
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Re: Changing a 6 Speed over to a 5 Speed

Postby de Bounce » Sat Feb 20, 2016 6:18 pm

rascal wrote:
de Bounce wrote:
greenMachine wrote:Maybe re-run that one with a 4.1 for the 8A ... :wink:

Am I missing something?

Yep, the NB8A 5 speed came from the factory with a 4.1.
My bad
Wrote 3.9, should have been a 4.1 for the NB8A
Speed in gears for a NB8A with a 4.1 at 7000rpm
1st 59.1km/hr
2nd 98.2km/hr
3rd 139.4km/hr
Same km/hr numbers
2011 NC2 PRHT SE in Dolphin Grey
2001 NB8B in Crystal Blue - Sold :(
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hamx5ter
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Re: Changing a 6 Speed over to a 5 Speed

Postby hamx5ter » Sat Feb 20, 2016 7:18 pm

rascal wrote:
hamx5ter wrote:I think 3rd gear for me is 113km/ph max

Sounds right.

My NB8A with 6 speed and std 4.1 diff shows following speeds at 7000rpm.

1st 49.3
2nd 82.1
3rd 112.6
4th 147.5
5th 185.4
6th 219.9


Yeah that seems about right... Any idea what it translate to acceleration times per gear?
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5isalive
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Re: Changing a 6 Speed over to a 5 Speed

Postby 5isalive » Sun Feb 21, 2016 12:50 am

Well it seems it may actually be the 4:1 with the 6 speed. It's a little confusing, I thought it would be better using the 3:9, although I did hear they are harder to come by.

Most of the repliers seem to feel that the 4:1 option will be the way to go. I guess it saves me on having to get a 5 speed also.

I won't be racing the car or anything, but it would be nice to have a little more midrange torque, particularly when passing or steep grades.

Thanks again for your suggestions. Please do keep them coming though. It helps in trying to weigh up the options.

Cheers, Wayne & Cath. :NB8B: :beer: :beer: :beer: :NB8B:


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