3.63 final drive gear?
#2
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FD is the 8" ring gear and the 1994-2005 miata (and 79-91 NA Rx7) uses a 7"
there probably is an 8" gear set with a ratio lower than 3.9, but its going to be in some dogmeat car like an 80's 929 or something
there probably is an 8" gear set with a ratio lower than 3.9, but its going to be in some dogmeat car like an 80's 929 or something
#4
RX-7 Bad Ass
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You'll have to find another way to pull that stump
Dale
Dale
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RX-7 Bad Ass
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I hear you. One of the local guys here (Jimmy) and I joke about how we're going to buy some mod or part for the car we never drive .
Dale
Dale
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so think like a Boss 302 vs a Boss 429, the Boss 302's always have 200k miles, and the 429's all have 2500 miles, why? the Boss 429 sucks, the 302 is fun.
whole bunch of cars like this, E30 BMW's, the 84-85 GSL-SE's, old miatae
so i've been trying to make my FC more fun to drive, and its helped
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gracer7-rx7 (07-20-20)
#12
Unless you are contemplating a transmission swap to a 6 speed of some sort. I've been researching that and it seems like I would need to consider both the trans and the final drive gears in order to meet my goals of shorter gearing in gears 1-5 and an overdrive type 6th gear with a lower cruising RPM.
Last edited by gracer7-rx7; 07-20-20 at 11:35 AM.
#13
https://www.rx7club.com/3rd-generati...rs-fds-688203/
Seems like there may have been one or two fabricated at the time. I see that paul ultimately sold the diff with that gearing.
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There is no need for taller gearing on a 13b rotary powered FD running the stock transmission IMO.
Unless you are contemplating a transmission swap to a 6 speed of some sort. I've been researching that and it seems like I would need to consider both the trans and the final drive gears in order to meet my goals of shorter gearing in gears 1-5 and an overdrive type 6th gear with a lower cruising RPM.
Unless you are contemplating a transmission swap to a 6 speed of some sort. I've been researching that and it seems like I would need to consider both the trans and the final drive gears in order to meet my goals of shorter gearing in gears 1-5 and an overdrive type 6th gear with a lower cruising RPM.
with the FD you have a big wide power band and don't need the gears as much
#15
^Yep. I hated that 6 speed on the Miata. Buzzy **** with way too much shifting.
The FD does have a wide power band but it would be nice to have a bit extra oomf coming out of stop signs low in the RPM range in 2nd gear for example. The higher ratio 4.3, 4.4 etc help with that. The higher ratios effectively liven things up a bit at lower RPMs. But then the RPMs are higher and the exhaust is louder when cruising at 80 which annoys me.
First world problems...
The FD does have a wide power band but it would be nice to have a bit extra oomf coming out of stop signs low in the RPM range in 2nd gear for example. The higher ratio 4.3, 4.4 etc help with that. The higher ratios effectively liven things up a bit at lower RPMs. But then the RPMs are higher and the exhaust is louder when cruising at 80 which annoys me.
First world problems...
#16
10000 RPM Lane
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moot point, supposedly there was a 3.638 available in 8” on the first year 929 and as best I can tell it was maybe in Europe, so likely lost to history and time
even the 3.727 is a hard find, but forget about the MPV, the best bet on that is the USDM 2WD 2600 truck because there were a lot more of them. They’re out there rusting away …
the reason to have one though is for the alternate transmission options such as the Nissan CD009, certain versions of the BMW DCT, and possibly others.
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even the 3.727 is a hard find, but forget about the MPV, the best bet on that is the USDM 2WD 2600 truck because there were a lot more of them. They’re out there rusting away …
the reason to have one though is for the alternate transmission options such as the Nissan CD009, certain versions of the BMW DCT, and possibly others.
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