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SR20DET swap

Old 03-07-2019, 10:15 PM
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SR20DET swap

I'm interested in doing a SR20DET swap in 2005 6 speed manual.
Pros:
- Able 350-400 w.h.p. bolt ons
-Keep steering in tact
-Fittable fit in with little modification engine bay and frame.
-Transmission and gearing while different able to swap in 3.91 RX7. Able to use SR20DET manual transmission still cheaper than Ford 8.8 swap.
swap.
Cons:
-Wiring probably have to go with Megasqurit
-Lack of support
-Design most of the mounts myself
-Custome piping and routing
I understand some people prefer the rotary engine and I think it's cool concept. I just thinking of different path. Thank you for any input.

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Old 03-10-2019, 11:15 PM
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Old 03-14-2019, 02:16 PM
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Personally, Id use Adaptronic Modular PNP. It is a can bus ECU ( Yes there are other CAN BUS ecu's out there not sure what is involved to get them to work) and everything works like factory once installed.

I hope you have better luck than i had trying to find a 3.9 Automatic Rx7 ring and pinion. I had to settle for a 4.1 5 Speed Rx7 ring and pinion.

Im not sure how the transmission of choice is going to affect you having to spend $ on a ford 8.8 swap, because they make PPF Delete kits for the stock rx8 differential. The stock diff is more than capable of holding whatever a Sr20 is going to throw it. Axles are the weakest link back there.

Keeping the stock steering intact is going to at the very least involve buying a kit to drop the rack, bump steer kit and rear sump oil pan whether one is available or custom.

And just a little info here, there are many cars out there that have the Aisin AZ6 Transmission ( S2000, Miata, Rx8, Sr20, Altezza, The FRS and BRZ have a similar tranny but it is to far removed to swap parts from). That being said, If you were to buy a 6 speed version of the Sr20, you can just swap tail housings and shift linkages Between the rx8/Sr20 trannys (Maybe a few more small parts) and it will just bolt right to the rx8 PPF which just leaves you with the motor mounts and other things i mentioned earlier (Providing there isnt anything on the back of the Sr20 head to foul out on the firewall.) I had played around with swapping a Renesis in a NB Miata with the AZ6 and the parts swapping works. And the Sr20's exhaust is on the opposite side, so there is that to deal

Last edited by RGT84; 03-14-2019 at 06:07 PM.
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