FD rear end reliability/strength question
For a 93 rx7 I heard the rear ends arent really that strong dont know how true that is but was wondering is there a stock replacement upgrade like from another car? Or what other alternatives do I have.
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Who told you that? Probably some knob who thinks dropping the clutch at 4k rpm with drag slicks on the street is cool. The FD wasn't designed to be a drag car and IMO the diffs are generally pretty robust. A lot of guys are putting impressive wheel hp thru them. And don't forget, they're almost all 20+ years old and with six-figures of mileage on them.
For really big torque and drag racing there are braces you can buy that will help keep things together...... Differential Brace Transmission Brace And a diff girdle...... https://www.rx7club.com/3rd-generati...banzai-710496/ Haven't checked in a while, but IIRC there was also an aftermarket supplier of rear crossmembers that would take a Cobra differential. |
The spider gears in the Torsen lsd are the weak point, this is why people upgrade the lsd unit to a clutch style. ATS makes the best lsd units that I have found, I run the carbon in my 20b, it is completely silent, none of the popping/clunking associated with other clutch style LSD units.
ATS LSD (93+ RX-7) |
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