Anybody run a 6 speed manual from 09-11 RX-8 with an S1 differential? If so did you run into any issues?

I see 6th gear in S2 transmissions have a taller gear than S1 transmissions, so highway cruising should be a few hundred RPM lower and maybe gain a little MPG. But I'm not sure if this could lug the engine on the highway either...

 

just curious; are you new to the internet?
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(Mod Edit), but I'd like actual responses from people who have done it and have experience with it. This isn't a, "will things bolt up" question but rather a question on how life with this setup.



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Thread cleaned up.

@TeamRX8 my apologies as I missed a prior post but have since addressed it.
Let's get this thread back on topic.

I believe the OP is looking for real world feedback / experience from those who have done this modification and how it's gone for them.

 

The car I bought from my son who bought it from Smutterbutter, has the same set up. There is no problem at all. The gear ratios work fine together.

I will be restarting my 2007 S1, with stock trans and rear end, I will be able to do an A/B comparison at that time. But nothing negative to report after 60k+ miles driving with the S1/S2 combination.

 

I run a S2 trans with S1 diff setup. Cruising at 75 in 6th is about 3500-3600 rpm. It does not lug really in acceleration at those speeds.

 

min
Im running the same set up , would want to know if anyone else has been using s2 tranny s2 differential in S1 with upgrades such as BHR ignition coils , RB intake , BHR midpipe , RB exhaust , exedy HD clutch disc and plate , act street flywheel

 

there are many pages of discussion on the forum on this topic assuming you really wanted to know their experiences.

the topic itself is so old that many are not around any more to regurgitate it for you. An S2 is potentially 13 years old at this point. So is this swap.

I’ve commented on it plenty myself; while it is potentially more durable long term, 3rd and 6th gearing is not favorable at all. From a gearing perspective; the S1 trans and S2 diff gear makes more sense. Mileage may suffer some, but anybody worried about mileage has no business owning a rotary engine vehicle.
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appreciate your input 💯😎 yeah the threads are old but at the same time there’s always updates with some custom modifications everyone is concerned with 3rd and 6th so I’m frankly convinced to stay with my S1 diff for now