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Old 11-19-2007, 09:55 AM   #1
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Default i finaly broke something in the mia

3rd gear synchro is dieing. I can't complalin though...the car had 149k miles on it, and I've done 18 track days this year. That's 30+ hours of track time on a 17 year old car.
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Old 11-19-2007, 10:01 AM   #2
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dubl clutch!
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Old 11-19-2007, 10:05 AM   #3
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dubl clutch!
it only acts up on highspeed 4-3 downshifts. It drives fine otherwise, and I'm not pulling it until the swap.
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Old 11-19-2007, 10:10 AM   #4
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4th to 3rd downshifts were always the worst for me, thought the synchro was shot but when i did a trans fluid change the problem went away. about 300,000 miles on my trans
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Old 11-19-2007, 10:11 AM   #5
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4th to 3rd downshifts were always the worst for me, thought the synchro was shot but when i did a trans fluid change the problem went away. about 300,000 miles on my trans
I stuffed Mobile1 in there over the summer. I guess its worth a try though.
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Old 11-19-2007, 10:25 AM   #6
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fo sho, fluid is cheap enough, try syncromesh(i think) made a lot of noises go away when i changed the fluids about 3K miles ago
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Old 11-19-2007, 10:26 AM   #7
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You get your synchromesh from the dealer?
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Old 11-19-2007, 10:32 AM   #8
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fo sho, fluid is cheap enough, try syncromesh(i think) made a lot of noises go away when i changed the fluids about 3K miles ago
can that stuff take the heat? I ran Mobile1 because I thought it would help in the 100* heat. It shifted fine with M1.
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Old 11-19-2007, 11:11 AM   #9
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my frinend got it for me, i think he got it at a crown dealership, employee discount

i have never had a problem due to heat...you would be a much better judge of the syncromesh since you track so much, give it a shot and let everyone know, im very happy with it
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Old 11-19-2007, 12:04 PM   #10
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I'd hardly call an aging synchro a "broken part" but congratulations I guess
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Old 11-19-2007, 12:12 PM   #11
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Synchromesh - Tranny rebuild in a bottle.

Ok not, but it sure seems like it.
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Old 11-19-2007, 12:16 PM   #12
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Maybe you should think about an upgraded transmission, the stock one might not be strong enough for track duty. Please start a bunch of threads about a TII swap.
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Old 11-19-2007, 12:17 PM   #13
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Synchromesh - Tranny rebuild in a bottle.

Ok not, but it sure seems like it.

trans > tranny
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Old 11-19-2007, 12:17 PM   #14
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Maybe you should think about an upgraded transmission, the stock one might not be strong enough for track duty. Please start a bunch of threads about a TII swap.
I'm going to swap in a powerglide.
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Old 11-19-2007, 12:22 PM   #15
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My dad has a spare powerglide, I could get you the hook up
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Old 11-19-2007, 12:22 PM   #16
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I'm going to swap in a powerglide.
That should hold up a while Don't forget to swap in a millitary axle or a little 9" ford behind it.
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Old 11-19-2007, 07:28 PM   #17
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should be a fun swap
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Old 11-20-2007, 01:07 PM   #18
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Originally Posted by Bryceness View Post
Synchromesh - Tranny rebuild in a bottle.

Ok not, but it sure seems like it.
I don't get it? all the s2000 (and other honduh-kiddies) uses synchromesh FM. i just tossed in 1.5 qts 2 wks ago and my 1-2 notchiness (in the honduh) went away.

while i wouldn't bother w/ $12/qt fluid for the miata, is the S-FM a known no-no for the miata tranny? mobil1 is a lot cheaper but i never liked the feel in the miata's box.
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Old 11-20-2007, 01:26 PM   #19
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he said box.
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Old 11-20-2007, 01:27 PM   #20
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Originally Posted by TonyC View Post
I don't get it? all the s2000 (and other honduh-kiddies) uses synchromesh FM. i just tossed in 1.5 qts 2 wks ago and my 1-2 notchiness (in the honduh) went away.

while i wouldn't bother w/ $12/qt fluid for the miata, is the S-FM a known no-no for the miata tranny? mobil1 is a lot cheaper but i never liked the feel in the miata's box.
i didnt like the mobile 1 either. i'm running amsoil now but i also have some bg synchroshift to try.
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