Who has the most miles on their 1.6 diff, boosted? - Miata Turbo Forum - Boost cars, acquire cats.

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Old 02-27-2012, 12:30 AM   #1
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Default Who has the most miles on their 1.6 diff, boosted?

Wondering how many peope on MT.net are still running their 1.6 diff with boost and how many miles.
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Old 02-27-2012, 12:50 AM   #2
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83K on stock OEM 6" rearend, car had 35K and turbo when I bought it. It hasn't broken because:
1. I don't side-step the clutch launch the car from a standing start at high RPM
2. I don't have big sticky rear tires
3. I don't powershift the trans at WOT
4. I'm only running 8lbs of boost
5. I have a 7" 4.10 rear end, axles and drive shaft sitting in my garage
6. I have been lucky (maybe due to #5 above)

YMMV, one guy in my local Miata club has grenaded 2 6" rearends with na 1.6L stock motors doing hard autoX launches.
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Old 02-27-2012, 01:09 AM   #3
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Thanks for that detailed post on your 1.6 diff Sn95!

Hopefully more members can chime in on their 1.6 diff miles while on boost...
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Old 02-27-2012, 01:20 AM   #4
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~12K miles on 1.6 VLSD. 10PSI (~180RWHP). 192K total miles.

I drive like sn95. 1st gear never sees full throttle.
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Old 02-28-2012, 10:27 PM   #5
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Anyone still running the 1.6 diff? There must be more than 2 people on this forum running them with boost!
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Old 02-28-2012, 11:18 PM   #6
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me, I broke two, one had 192k on it and the spider gears tore apart in the diff, probably due to the PO. Second rear end broke the pinon teeth off it, drag racing, had a lot of wheel hop the couple runs I did. Finally few weeks later it let go.
I took the diff out of #2 rear end, and installed it in #1 rear end.
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Old 02-29-2012, 12:18 AM   #7
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Mine had the stock 6" dif for about 30k miles at around 200whp. I knew it's limitations and tried not to push them.
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Old 02-29-2012, 11:44 AM   #8
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I still have stock diff on my 92. Total miles is at around 187K, with the last 20K miles boosted. 9 PSI with SR20 T25 (similar to 2554).

No hard launches on daisy wheels with All-Season tires.
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Old 02-29-2012, 01:36 PM   #9
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Good feedback so far!

Please add details on how you drive on the 1.6 diff
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Old 02-29-2012, 07:27 PM   #10
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~15k miles, ~225k total miles with a SR20 T25.

It's all about mechanical empathy. However, I'm also upgrading to a 7" ASAP, because mechanical empathy isn't very fun to drive.
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Old 02-29-2012, 08:12 PM   #11
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110k miles on my VLSD, ~15k poorly boosted. Aka bandaids that never worked perfectly. It was never launched, although a few N/A standing burnouts for fun. It let go at the track, politely at the end of my last session so I could get back to the pits, out of the gated section and into a parking lot to wait for a tow.
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Old 03-01-2012, 11:09 PM   #12
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About 4k with 14lbs boost. Hard launches, power shifts and some clutch kicks. Ive beat the crap out of it, it does whine but seems smooth still. Going to try to replace it before summer and keep this one as a spare.
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Old 03-02-2012, 02:21 AM   #13
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216k, 8k boosted 10psi. bunch of 1st gear pulls (no dumping clutch), lots of powershifting 2nd, no side stepping clutch, power sliding a few corners here and there
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Old 03-04-2012, 04:59 PM   #14
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I did time trials, autoX (with launching) and two hillclimbs on my 1.6L diff. 195whp. The diff was Maruha but the ring gear/pinion was stock. Didn't have problems. Daily drove that car a solid 15k plus the racing. Then sold the diff and got a 1.8L because HP jumped significantly.
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Old 03-08-2012, 03:46 PM   #15
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I have about 145k on my stock rear. About to just NOW go turbo. I will jump back in this thread and post!
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Old 03-08-2012, 11:49 PM   #16
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^Nice! Keep us updated!

I have a BEGI S1 kit in the making so should be boosted soon as well. I have 136k miles on stock motor and diff.
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Old 03-09-2012, 12:11 AM   #17
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100k mileswithout turbo, massively beaten for the last 20k miles.

was holding perfectly untill i went to the drag strip, swapped some larger under-inflated winter tires and launched with launchcontrol+flatshift.lasted one summer
of street driving, lasted 3 run at the drag strip.

swapped a 4.10 2001 atx 1.8 open diff, have done countless launch/doughnut and still holding fine.installing my torsen this summer.
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Old 03-09-2012, 09:30 AM   #18
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Quote:
Originally Posted by kaboshe View Post
100k mileswithout turbo, massively beaten for the last 20k miles
What would you define as "massively beaten"? Lol before the differential gave up at the drag strip.
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Old 03-09-2012, 09:41 AM   #19
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having bought the new diff, i was eager to see the 6''' one explode

went to a parking and did hundred doughnut, clutchkicked it to death,
streetraced my roomate FD3s(launch control+flatshift/powershift) a dozen time

havent fubared it that night, so the next day i went to the strip and finished it properly(upped the boost, swapped some larger wintertire and launched like if my life depended of it)

was at 12 psi all the time, 16 on the strip on a gt2560r
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Old 03-09-2012, 09:57 AM   #20
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Quote:
Originally Posted by kaboshe View Post
having bought the new diff, i was eager to see the 6''' one explode

went to a parking and did hundred doughnut, clutchkicked it to death,
streetraced my roomate FD3s(launch control+flatshift/powershift) a dozen time

havent fubared it that night, so the next day i went to the strip and finished it properly(upped the boost, swapped some larger wintertire and launched like if my life depended of it)

was at 12 psi all the time, 16 on the strip on a gt2560r
bet the track was mad at you lol
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