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Old 05-28-2012, 12:07 AM   #101
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Is anyone besides Bundy and me running the miataroadster short shifter for the 6 speed? It's not some ricer piece of crap stock piece with the lever cut short. This actually has a raised fulcrum an redesigned bushing. It made a night and day difference with my two six speeds. I have the 'short' version in the MSM and the 'tall' version in the track car. Both of mine are MSM 6 speeds which have just as crappy a reputation for poor shifting as the regular SE boxes.

Sorry, slightly OT for fluid talk. I've run the Ford juice before and since installing the new shifters.
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Old 05-28-2012, 12:21 AM   #102
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my previous one was super notchy

this one is BUTTER smooth, so I'll just keep the stocker in there.

how much does the MR one cost?
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Old 05-28-2012, 12:53 AM   #103
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http://www.miataroadster.com/miataro.../i-414422.aspx
They are $250 but the kit is very comprehensive. Bill noticed some variables in machining tolerances between different 6 speeds so that might explain why some swear by their 6 speed and other swear at them... His new bushing design takes the variable depth of the shift pocket out which seems to help also.
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Old 05-28-2012, 05:49 AM   #104
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Originally Posted by mr_hyde View Post
Both of mine are MSM 6 speeds which have just as crappy a reputation for poor shifting as the regular SE boxes.
The MSM gearboxes are some of the best shifting 6-speeds in existence. I have driven a couple of bad 6 speeds, but most of them are great, and the MSM boxes I've driven are better than the worst 5-speed I've driven.

I've got a Simpson (?) shortshifter in Theseus, and I don't think it's any different than the factory shifter in Rover. Both have metal lower bushings, both have fantastic shift feel. With the twindisc in Theseus I can get between gears in <200ms.
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Old 05-28-2012, 05:57 AM   #105
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Any UOA results?
Not yet. Just put it in when i did the turbo / clutch / ect. I used it in the shifter turret as well. We'll see when *X* amount of miles pass and i change it out. Or the 5 speed blows up. Whatever comes first. Currently on just under 2k miles on it, seems a little notchey after doing some turns or hard braking / acceleration.
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Old 05-28-2012, 11:19 PM   #106
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We used Amsoil MTG 75/90 in everything for the last 5 years of so. Recently we switched over to Redline heavy shockproof gear lube on the suggestion of Trackdayhookey. It's weird incredibly thick milky pink and lasts much longer than the MTG. On paper at least, the heavy shockproof should be the wrong stuff for the job but it shifts great.
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Old 05-29-2012, 01:02 PM   #107
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How is the cold shifting?

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Originally Posted by emilio700 View Post
We used Amsoil MTG 75/90 in everything for the last 5 years of so. Recently we switched over to Redline heavy shockproof gear lube on the suggestion of Trackdayhookey. It's weird incredibly thick milky pink and lasts much longer than the MTG. On paper at least, the heavy shockproof should be the wrong stuff for the job but it shifts great.
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Old 05-29-2012, 04:50 PM   #108
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We used Amsoil MTG 75/90 in everything for the last 5 years of so. Recently we switched over to Redline heavy shockproof gear lube on the suggestion of Trackdayhookey. It's weird incredibly thick milky pink and lasts much longer than the MTG. On paper at least, the heavy shockproof should be the wrong stuff for the job but it shifts great.
I tried running heavy shock proof a couple times in the 5 speed. It did nothing for keeping the things from blowing up I think trans temps were hotter and I am not convinced it is good for the task at hand. Im pretty sure Royal purple 75W90 ran the lowest trans temps of any fluid I tried but it sucked shifting with the 6 speed, It is not GL4. Amsoil MTG 75W90 GL4 seems the best so far for me with the 6 speed.

Bob
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Old 05-29-2012, 07:09 PM   #109
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I tried running heavy shock proof a couple times in the 5 speed. It did nothing for keeping the things from blowing up I think trans temps were hotter and I am not convinced it is good for the task at hand. I’m pretty sure Royal purple 75W90 ran the lowest trans temps of any fluid I tried but it sucked shifting with the 6 speed, It is not GL4. Amsoil MTG 75W90 GL4 seems the best so far for me with the 6 speed.

Bob
+1. I tried the Heavy Shockproof in my diff last year and it came out burnt and torched after 15 hours, and the UOA was not pretty. The MTG that came out of the tranny, OTOH, was perfect. Perhaps the Heavy Shockrpoof will fare better in the tranny, but the results from that test were enough to scare me away for good.

I will pull the SVG out of the diff in Rover this week and send it in - IIRC that fluid has ~15 hours on it as well. If that comes out burnt too, expect to see a diff cooler kit from us shortly afterwards.
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Old 06-08-2012, 12:30 PM   #110
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I think il be changing mine fairly soon! was silky smooth to start with but Im starting to find shifting in to second a pain when it is cold and going back down in to first isnt the smoothest either... I know 6 speeds arent known for being smooth but its starting to wear a little thin.. now time to decide which one to use.. everyone seems to have their own opinion on a different oil..
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Old 06-21-2012, 03:42 AM   #111
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+1. I tried the Heavy Shockproof in my diff last year and it came out burnt and torched after 15 hours, and the UOA was not pretty. The MTG that came out of the tranny, OTOH, was perfect. Perhaps the Heavy Shockrpoof will fare better in the tranny, but the results from that test were enough to scare me away for good.

I will pull the SVG out of the diff in Rover this week and send it in - IIRC that fluid has ~15 hours on it as well. If that comes out burnt too, expect to see a diff cooler kit from us shortly afterwards.
any word on how the SVG did?
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Old 06-21-2012, 01:41 PM   #112
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any word on how the SVG did?
Just drained it yesterday, actually. It will go off to Blackstone next week.
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Old 06-21-2012, 02:03 PM   #113
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Followed Sav's advice on the Amsoil, especially after finding an Amsoil dealer less than a mile from my suburbia home. Weird. He even was leaving to do some errands and delivered them.

Anyways, the oil is indeed magic, my old 5 speed has never shifted better. Now with more power than ever and 120,000 miles, it probably won't last long, but it'll shift like butter until it explodes.

Sav, how many track days would you suggest on transmission oil? I hope a lot, because it was a bitch and a half to change. What a mess.
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Old 10-26-2012, 11:50 AM   #114
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THREAD REVIVAL TIME YET AGAIN:

When I said previously that my 6 speed shifted like butter I'd only driven it a little while. Here is the more updated review: when its cold, it shifts like ***. When its super hot (a good 20+ minutes of driving) it start getting nicer and nicer. Also I totally went full retard and forgot all about it before so I'm just now getting around to ordering some.

So with that in mind, and also the fact that this is a STREET car (meaning I want the oil up to temp asap and trans shifting smooth in the morning) would everyone still recommend the MTG?

Also I basically need exactly 3 bottles of it right? 1.05 for the diff and 1.89 (or something like that) for the trans?

This would be into an 01 6speed trans and torsen diff.
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Old 10-26-2012, 01:54 PM   #115
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Quote:
Originally Posted by 18psi View Post
THREAD REVIVAL TIME YET AGAIN:

When I said previously that my 6 speed shifted like butter I'd only driven it a little while. Here is the more updated review: when its cold, it shifts like ***. When its super hot (a good 20+ minutes of driving) it start getting nicer and nicer. Also I totally went full retard and forgot all about it before so I'm just now getting around to ordering some.

So with that in mind, and also the fact that this is a STREET car (meaning I want the oil up to temp asap and trans shifting smooth in the morning) would everyone still recommend the MTG?

Also I basically need exactly 3 bottles of it right? 1.05 for the diff and 1.89 (or something like that) for the trans?

This would be into an 01 6speed trans and torsen diff.
We have been using MTG off an on in our street cars as well as the race cars for a few years now. Good when cold but best when hot. For a gently driven, high mileage, low power daily, redline MTL still works well. MTL is too thin for any performance use though.

The MTG seems to last 20-30hrs on track. Keep in mind our endurance cars keep the oil hot so our temp histogram would have a lot more hours in the 260+ range than most. IOW, we spend very little time coming up to temp in relation to time at peak temp. What that means is our 20-30 hrs would probably translate to 30-50hrs for an HPDE/TT guys, maybe more for all street drivers.

SVG for Torsen.

We're still using the Redline heavy shockproof for Crusher but Andrew is right, it doesn't last nearly as long as the MTG we had been using the last few years. I keep breaking shift forks in the 6 speeds and the Heavy Shockproof has been an attempt to curtail those failures. It hasn't so we'll switch back to MTG as we had been using.
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Old 10-26-2012, 02:54 PM   #116
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Very good information Emilio, thank you.
What is SVG?

And only because I am OCD and need confirmation: I need 3 bottles total for both right?
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Old 10-26-2012, 08:22 PM   #117
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Very good information Emilio, thank you.
What is SVG?

And only because I am OCD and need confirmation: I need 3 bottles total for both right?
Get a factory service manual!
trans is 2.1, diff is .9 ...I think.

Google
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Old 10-26-2012, 08:39 PM   #118
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lol I failed. I blame being busy at work while posting.

Now that I'm relaxing at home with a cold one in my hand I'll use ol google.

Thank you sir
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Old 10-31-2012, 09:41 AM   #119
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ordered mtg and svg
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Old 11-06-2012, 01:18 PM   #120
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Motorcraft synthetic MTF
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