Where To Buy Ring And Pinion Sets?
Senior Member
Joined: Jan 2004
Posts: 553
From: Houston, TX
[quote name='j9fd3s' date='Mar 13 2005, 09:52 AM']the fd is a p type, like the rx8 which has 4.44
the fc's are compatible with only themselves, unless you can cut and lengthen the pinion gear. the na fc uses the m type diff, and the turbo fc uses the p type diff
[/quote]
Hmm...I was looking into running a 4.10 or 4.30 ratio in my RX8 when it get's turbo'd(sometime in the future, like when it's paid off). I'd like a lower RPM while cruising and the better mpg it gets, but then again the project can go whole different direction and be a track/autocross/drift car.....hmm....4.77's?
the fc's are compatible with only themselves, unless you can cut and lengthen the pinion gear. the na fc uses the m type diff, and the turbo fc uses the p type diff
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Hmm...I was looking into running a 4.10 or 4.30 ratio in my RX8 when it get's turbo'd(sometime in the future, like when it's paid off). I'd like a lower RPM while cruising and the better mpg it gets, but then again the project can go whole different direction and be a track/autocross/drift car.....hmm....4.77's?
Super Moderator
Joined: Sep 2002
Posts: 2,763
From: Savannah, Ga
There is a 4.77 gear made for the TII diff, by some company in japan, and from what I hear theyre next to impossible to get in the states.
Ever thought about swapping to a ford 8.8" IRS rear end out of a mustang cobra?
Ever thought about swapping to a ford 8.8" IRS rear end out of a mustang cobra?
Senior Member
Joined: Jun 2004
Posts: 524
Originally Posted by mazdaspeed7' date='Mar 14 2005, 03:29 PM
Ever thought about swapping to a ford 8.8" IRS rear end out of a mustang cobra?
They are cheaper and easier to find from a 90's Thunderbird. If I remember right, the supercharged models with traction control even had 3.73 gearing. On one hand, they are iron as opposed to aluminum. But on the other hand, they are IRON instead of ALUMINUM. I'd take the iron case any day.
You want to be careful, though. Only V8 and supercharged models had the 8.8 rear. The base V6 models had the 7.5. (Different from the Mazda 7.5)
Thread Starter
Senior Member
Joined: Dec 2001
Posts: 2,934
From: Jensen Beach, FL / Sylva, NC
[quote name='heretic' date='Mar 14 2005, 08:06 PM']They are cheaper and easier to find from a 90's Thunderbird. If I remember right, the supercharged models with traction control even had 3.73 gearing. On one hand, they are iron as opposed to aluminum. But on the other hand, they are IRON instead of ALUMINUM. I'd take the iron case any day.
You want to be careful, though. Only V8 and supercharged models had the 8.8 rear. The base V6 models had the 7.5. (Different from the Mazda 7.5)
[/quote]
Hmmmm..... very very interesting. Well the engine was swapped in may as well keep with the frankenstien theme.
I have been considering a custom CF driveshaft this would make for a perfect excuse to do it.
You want to be careful, though. Only V8 and supercharged models had the 8.8 rear. The base V6 models had the 7.5. (Different from the Mazda 7.5)
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Hmmmm..... very very interesting. Well the engine was swapped in may as well keep with the frankenstien theme.
I have been considering a custom CF driveshaft this would make for a perfect excuse to do it.
