Rear end questions
I was reading on the .net about rear ends. A post said 99'-00' cars (non 6-speed) came with a 4.30 rear end. Is this true? Would the rear end be as strong as the torsen? I have no complaints of the 1.6 ratios, I just dont wanna blow it up.
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if its a 7'' rearend its stronger than the 6''. 7'' rears are in 1.8 cars (open or lsd) and 6'' are in 1.6 cars (vlsd/mazdaspeed ect) Remeber the diff itself is not the weak part, its the ring and pinion gears that go.
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But do the 99'-00' cars have the 7" with a 4.30 ratio? After reading about 30 threads about rear ends I couldn't find the answer. But I do know about what fails, what years have what. Pretty much everything but the one thing I want to know, go figure:vash:
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my wife's '99 had that.
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Originally Posted by miataspeed1point6
(Post 45825)
But do the 99'-00' cars have the 7" with a 4.30 ratio? After reading about 30 threads about rear ends I couldn't find the answer. But I do know about what fails, what years have what. Pretty much everything but the one thing I want to know, go figure:vash:
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Yes you did. Didn't mean to imply you didn't answer anything. Sorry. I'm just sort of frustrated from reading so many old threads with the same info in them.
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KFJ, you wifes 99' had a 4.30 7" rear end?
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pretty certain.
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I wouldn't mind a 4.10 to bring the revs down about 200rpms in 5th gear
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I rarely drive on the freeway, maybe once a month at most. So I have no complaints with the 4.30. I just want a 1.8 dif to handle the power. But the few times I was on the freeway I agree, those extra 200 rpm's would be nice.
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YES! Its confirmed that the 99'-00' difs are 7" torsen with a 4.30 rear end. Looks like I need to find one now. I have only seen one miata in the junkyard. It had caught on fire and had no useable parts....I need to find one.
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why would a fire destroy the dif driveshaft etc?
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all the boots were melted and the fluid was NASTY looking. I'm not even sure what year that car was. VERY bad shape.
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Wait only 99-00 had the 4.30? Aw... that means my parts from an 01 is the 4.10? ah well.
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Originally Posted by Splitime
(Post 46368)
Wait only 99-00 had the 4.30? Aw... that means my parts from an 01 is the 4.10? ah well.
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Originally Posted by brgracer
(Post 46369)
You'll start appreciating the 4.10 as you up the power so don't be too disappointed.
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I really want a 4.10 or 3.93 when I convert, first gear is useless with a 4.30
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I enjoy my 3.90, keeps RPM low on the highway.
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Originally Posted by Splitime
(Post 46368)
Wait only 99-00 had the 4.30? Aw... that means my parts from an 01 is the 4.10? ah well.
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