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DIY Transmission Re-Build Tips

Old Dec 21, 2016 | 10:57 AM
  #226  
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Originally Posted by letsgetthisdone
That's crazy that the fluid isn't abrasive. Super weird.


Jon does mod the synchro's for better shifting, like all the trans shops. They definitely don't shift too great when cold, especially when ambient is below 50*, the trans really has to warm up a bit. I usually let the car idle a few minutes, and just drive it easy for a few miles. Mine have been great otherwise. And once warmed up, it shifts like a dog box at 8k rpms. Execpt the 5th gear grind/crunch is starting to come back now that the trans seen some some abuse; probably close to 15k miles with some track days and plenty of roll races in mexico.


The thickness of the friction would be the same. Only the hub thickness would change, which would not require a different PP.
That's another reason I think the metal is the casing's aluminum....

But does he mod the slider?

If so, this could cause me problems and probably force me to buy new sliders (which would also mean all new syncro's on that slider, instead of just 2&3)
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Old Dec 21, 2016 | 11:01 AM
  #227  
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Originally Posted by tsitalon1
But does he mod the slider?

If so, this could cause me problems and probably force me to buy new sliders (which would also mean all new syncro's on that slider, instead of just 2&3)
Considering modifying the teeth on the gear, the synchro and the slider is the only way to change the engagement, I would say yes. As to if it will cause issues having a modded slider, but a stock synchro, idk..

Last edited by letsgetthisdone; Dec 21, 2016 at 11:07 AM.
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Old Dec 21, 2016 | 11:06 AM
  #228  
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Originally Posted by letsgetthisdone
Considering modifying the teeth on the synchro and slider is the only way to change the engagement, I would say yes. As to if it will cause issues having a modded slider, but a stock synchro, idk..
Guess I'll find out

I'll check for smooth engagement by hand, but that doesn't really reflect real world situations.
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Old Dec 21, 2016 | 11:16 AM
  #229  
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In reality, now that I thought more about it, I don't think the syncro teeth matter. The synchro is locked into the hub, so the synchro and slider are already aligned. Its the teeth on the gear that matter. And you're not replacing gear (hopefully anyways), so you'll be fine.


You can see what I'm talking about half way down on this page.


http://www.teamrip.com/EVO%20limit.html
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Old Dec 21, 2016 | 11:44 AM
  #230  
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Originally Posted by letsgetthisdone
In reality, now that I thought more about it, I don't think the syncro teeth matter. The synchro is locked into the hub, so the synchro and slider are already aligned. Its the teeth on the gear that matter. And you're not replacing gear (hopefully anyways), so you'll be fine.


You can see what I'm talking about half way down on this page.


http://www.teamrip.com/EVO%20limit.html
Very good point, thanks for the sanity check!
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Old Dec 30, 2016 | 10:59 AM
  #231  
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Stripped a center diff drive gear bolt (big ones 19mm that hold final drive to diff).

Anyone have the part number for this bolt?
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Old Dec 30, 2016 | 11:45 AM
  #232  
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I just looked at my TRE invoice, he just has the size on it (12x29mm, flange bolt), no Mits part number.
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Old Dec 30, 2016 | 02:12 PM
  #233  
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Found it:
MD952231

https://www.tmzperformance.com/shop/...s-29-0mm-long/
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Old Dec 30, 2016 | 03:51 PM
  #234  
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So my bearing splitter worked great for everything except the center diff top bearing. It's to small (diff same size as splitter).

I'm using the large splitter from Harbor Freight, does anyone have any other economical suggestions?

I'm trying to avoid cutting it off, but will if I have to
Attached Thumbnails DIY Transmission Re-Build Tips-20161230_174047-1-.jpg  
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Old Dec 30, 2016 | 04:07 PM
  #235  
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I cut mine off. I also could get a bearing splitter to work.
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Old Dec 30, 2016 | 04:23 PM
  #236  
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Originally Posted by letsgetthisdone
I cut mine off. I also could get a bearing splitter to work.
Yeah, I'm leaning towards cutting it off because I cannot find a big enough splitter locally, and the extra large splitters on Amazon are over $150...

Where did you get your splitter, is it a 6-8" splitter?
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Old Dec 30, 2016 | 04:27 PM
  #237  
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Originally Posted by tsitalon1
So my bearing splitter worked great for everything except the center diff top bearing. It's to small (diff same size as splitter).

I'm using the large splitter from Harbor Freight, does anyone have any other economical suggestions?

I'm trying to avoid cutting it off, but will if I have to
Sometimes the bearing is easy to remove, try to grip the bottom of the rollers. If that doesn't work, remove the bearing rollers and retainer, and try to grip the inner race by the upper lip. If that doesn't work you'll have to cut it off.
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Old Dec 30, 2016 | 04:33 PM
  #238  
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Originally Posted by tsitalon1
Yeah, I'm leaning towards cutting it off because I cannot find a big enough splitter locally, and the extra large splitters on Amazon are over $150...

Where did you get your splitter, is it a 6-8" splitter?

Idk, its what my dad has in the shop. I had a typo, I couldn't* get one that worked...lol

Originally Posted by Dave W.
Sometimes the bearing is easy to remove, try to grip the bottom of the rollers. If that doesn't work, remove the bearing rollers and retainer, and try to grip the inner race by the upper lip. If that doesn't work you'll have to cut it off.
If you can pull a bearing off by hand, the diff housing is bad.
I tried putting the bearing puller/splitter around the upper lip, the lip just broke off..
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Old Dec 30, 2016 | 08:08 PM
  #239  
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Originally Posted by letsgetthisdone
Idk, its what my dad has in the shop. I had a typo, I couldn't* get one that worked...lol


If you can pull a bearing off by hand, the diff housing is bad.
I tried putting the bearing puller/splitter around the upper lip, the lip just broke off..
Roger that, I'll just cut it off carefully.
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Old Dec 30, 2016 | 11:45 PM
  #240  
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If you cut most of the way through, you can crack it with a good cold chisel and solid hammer. That's what I did. That way you don't have to worry about cutting into the diff housing.
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