Is there a way to do an LFX swap and keep the miata diff?
#1
Is there a way to do an LFX swap and keep the miata diff?
I know the PPF goes away with the LFX swap. I currently have an OS Giken LSD and would like to keep the miata diff and axles to save a bunch of time and money. From everything I have read they should be able to handle the LFX power so it doesn't make it necessary to swap over to the GM diff and custom axles.
Is there currently a way to remove the PPF and keep the miata rear diff?
Is there currently a way to remove the PPF and keep the miata rear diff?
#4
Yup, we have a bolt-in PPF delete getting close to hit the market. We've already made a couple sets and just want to do some more brutal testing before they are up for sale. They will be suitable for street cars and race cars, with a range of durometer ratings for the front poly bushing. I'll definitely post about them here when they are ready to go.
LukeG, not sure how that LFX trans is geared, but you may need a longer rear end to make it all be happy together. I think V8R is normally using a 3.42 Getrag for those cars? Not sure, but worth checking out.
LukeG, not sure how that LFX trans is geared, but you may need a longer rear end to make it all be happy together. I think V8R is normally using a 3.42 Getrag for those cars? Not sure, but worth checking out.
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Home of the original KMiata Swap
K24 NC swap is coming in 2024! Learn more
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#5
Yup, we have a bolt-in PPF delete getting close to hit the market. We've already made a couple sets and just want to do some more brutal testing before they are up for sale. They will be suitable for street cars and race cars, with a range of durometer ratings for the front poly bushing. I'll definitely post about them here when they are ready to go.
LukeG, not sure how that LFX trans is geared, but you may need a longer rear end to make it all be happy together. I think V8R is normally using a 3.42 Getrag for those cars? Not sure, but worth checking out.
LukeG, not sure how that LFX trans is geared, but you may need a longer rear end to make it all be happy together. I think V8R is normally using a 3.42 Getrag for those cars? Not sure, but worth checking out.
Yeah, I looked at the gearing and a 3.91 even with the MV7 with lower trans ratios would be ridiculous. Needs to be a 3.42 or 3.23 in the diff :P
#8
It got tested this past weekend in an enduro and appears to have passed with flying colors. Not recommended for street cars since this design is straight metal on metal with zero vibration isolation. The KMiata diff mount will be a better solution for most people. My diff mount might be for sale eventually, but not until my own car is up and running and I've put significantly more test miles on this design.
#9
Came across this old thread and pic searching. Interesting idea.
https://www.miataturbo.net/suspensio...-delete-69312/
https://www.miataturbo.net/suspensio...-delete-69312/
#12
Came across this old thread and pic searching. Interesting idea.
https://www.miataturbo.net/suspensio...-delete-69312/
https://www.miataturbo.net/suspensio...-delete-69312/
#15
There was also a rumor that an 80's mazda truck 3.3 rear set would work, but from what I have seen that has been disproved. So as far as I know nothing under a 3.6 ratio exists.
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