miata rear end fit an Rx7????
05-16-02, 06:34 PM
#1
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miata rear end fit an Rx7????
i heard that a '94-'97 miata rear end fits with the first gen. RX-7, is this true???? mine is a '79, i would like to know if it dose or dosent. thanks.
05-16-02, 07:41 PM
#5
Old [Sch|F]ool
The '94-up Miata will work in an '84-85 rearend. It will physically bolt in to any 1st-gen rear but only the '84-85 have the correct axle splines. You cannot swap those axles into an earlier housing.
The only point to the swap would be so you can use the lower gears and/or Torsen diff found in SOME Miatas. Other than that, not much point.
The only point to the swap would be so you can use the lower gears and/or Torsen diff found in SOME Miatas. Other than that, not much point.
05-16-02, 08:11 PM
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Is there something wrong with lower gears or torsen diffs?
I know there's one problem with torsen diffs:
They don't work if one wheel has absolutely NO traction. Thus solved by applying the brakes lightly.
The benefits are:
No special fluids required. Striaght gear oil
Never wears out unlike clutch pack diffs
Stronger than other types of diff
Any others? Any corrections as well.
I know there's one problem with torsen diffs:
They don't work if one wheel has absolutely NO traction. Thus solved by applying the brakes lightly.
The benefits are:
No special fluids required. Striaght gear oil
Never wears out unlike clutch pack diffs
Stronger than other types of diff
Any others? Any corrections as well.
05-16-02, 08:31 PM
#7
Old [Sch|F]ool
Torsens aren't the strongest... they still use gears and gears can break. I'm sure SOMEONE out there makes a spool for the Mazda 7".... 
Which is my point. The '94-up Miata differential is the same short-nose 7" that was used in the 1st-gen RX-7 as well as the RX-3 SP. There's no inherent advantage to using it unless you grab one with the torsen diff or with 4.30 or 4.444 gears. (Forgot about those...) Conveniently the Miata halfshafts' inner splines are the same as the '84-85 RX-7 axles' splines.
I kinda like the clutch LSD. It chirps around tight corners just like a spool
Which is my point. The '94-up Miata differential is the same short-nose 7" that was used in the 1st-gen RX-7 as well as the RX-3 SP. There's no inherent advantage to using it unless you grab one with the torsen diff or with 4.30 or 4.444 gears. (Forgot about those...) Conveniently the Miata halfshafts' inner splines are the same as the '84-85 RX-7 axles' splines.
I kinda like the clutch LSD. It chirps around tight corners just like a spool
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05-16-02, 08:55 PM
#9
Gone Race'n
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spool - A one piece ring gear carrier that locks the rear axle shafts together and provides equal rotation of both wheels.
As taken from the Summit Racing online catolog.
As taken from the Summit Racing online catolog.
something i dropped in the toilet earlier.
05-16-02, 09:35 PM
#11
Super Newbie
Originally posted by moremazda
spool - A one piece ring gear carrier that locks the rear axle shafts together and provides equal rotation of both wheels.
As taken from the Summit Racing online catolog.
spool - A one piece ring gear carrier that locks the rear axle shafts together and provides equal rotation of both wheels.
As taken from the Summit Racing online catolog.
)Harsh on rear tires on the street, thats why they are recommended for drag use only. The same effect without the strength is obtained by the fools that weld their spider gears.
05-16-02, 10:58 PM
#12
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quote from How stuff works.com
", the Torsen is superior to the viscous coupling because it transfers torque to the stable wheels before the actual slipping occurs.
However, if one set of wheels loses traction completely, the Torsen differential will be unable to supply any torque to the other set of wheels."
", the Torsen is superior to the viscous coupling because it transfers torque to the stable wheels before the actual slipping occurs.
However, if one set of wheels loses traction completely, the Torsen differential will be unable to supply any torque to the other set of wheels."
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