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2nd Gen (93-97) V6 2.5L Performance Discussion of Performance topics for V6 2.5L

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Old September 23rd, 2009, 11:12 PM   #1
artsvetkov
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How-to: Taller 5th gear using PSE/Escort gears

So today went out to junk yard to get taller 5th gear after reading this thread http://forums.probetalk.com/showthread.php?t=1701282253

I was looking for 93-97 Probe SE but someone already took the 5th gear set, so I ended up getting gears from newer escort, but they should be the same.

So this is what you need
Tools
1/2 impact gun or breaker bar and a lot of muscle.
32 and 26 mm sockets to get the lock nuts of PGT tranny
Chisel and punch set
10mm, 23mm and 17mm sockets
RTV
Gears
http://i30.photobucket.com/albums/c3..._5059Large.jpg

So first jack up the car and drain transmission fluid (23mm socket to open the drain/fill plug)

Remove splash guards

Then lower the transmission so the end cover clears the frame
you can do it by removing crossmembers and losing top trans mount (17 mm bolts)

Then remove 10mm bolts from end cover and pull the cover off.

Using chisel unlock the lock nuts and remove them (32mm and 26mm)
http://i30.photobucket.com/albums/c3..._5060Large.jpg

Next step is to remove pin that holds the alum selector arm on the shaft (use punch), you can see the pin from the bottom.

Remove First gears on each shaft, then grab the whole gear assembly(from syncro to syncro) on the left and pull it off with the selector arm.
Now we got to the gears
http://i30.photobucket.com/albums/c3..._5061Large.jpg

Pull them off and replace them with taller ones, then assemble in reverse order.

When you go to put the lock pin back, you can squeeze the pin with pliers and drive it in with hammer.

Tq the lock nuts to 95-140 ft-lb and lock the nuts with the punch and hammer.

scrape the cover and tranny surface, reseal and reinstall it.

put everything back together, let RTV cure, fill the oil and take it for a spin.



After I tightened the lock nuts, I put car in 5th and started to see if the wheel are spinning, if they do, you win. make sure both wheel are of the ground to prevent fail.


here are escort gears on the bottom and PGT on top
http://i30.photobucket.com/albums/c3..._5062Large.jpg
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Old September 23rd, 2009, 11:41 PM   #2
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Nice write up man. I didn't think someone would go out so fast and do this. Thanks for doing the leg work.
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Old September 24th, 2009, 12:00 AM   #3
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great job man that is quick
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Old September 24th, 2009, 12:03 AM   #4
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Since the RTV is drying, I will fill it up and take it for a spin tomorrow after college.
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1980 Corvette Vortec 350 and side pipes


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Old September 24th, 2009, 01:30 AM   #5
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Impressive dude, i love seeing write ups. Way to go on expertise and speed. Double thumbs up for you! What kind of results are we looking at here?
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Old September 24th, 2009, 04:53 AM   #6
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I request teh sticky.
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Old September 24th, 2009, 06:35 AM   #7
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How to: 30+ MPG and reduce engine wear.... I can't believe we didn't do this sooner!
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Last edited by Alexklze; September 24th, 2009 at 09:44 AM.
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Old September 24th, 2009, 08:39 AM   #8
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Whats your RPM at 60mph?
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Old September 24th, 2009, 08:41 AM   #9
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Amazing write up and Def great for our gas milages!!!
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Old September 24th, 2009, 11:17 AM   #10
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i'd really like to see how much of a gas mileage increase this will net. wonder why they went to shorter gears in the obdII probes
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Old September 24th, 2009, 11:36 AM   #11
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I've been running a 2.0 5th for a couple years now.
I also have the 4.11 final so I'm even taller.

70mph = about 2800rpm
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Old September 24th, 2009, 12:08 PM   #12
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I think this is something I definitely need to do. Thanks for the write up.
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Old September 24th, 2009, 01:28 PM   #13
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I'm planning on doing this when I pull the trans to replace my clutch. Thanks!
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Old September 24th, 2009, 02:11 PM   #14
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If anybody wants the part numbers for the lock nuts, I got them from our Mazda store. Mazda recommends you replace them, although its probably not really necessary. They are a little spendy but less than another trans if one were to break or back out.
F520-17-628 and F521-17-628A
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Old September 24th, 2009, 02:45 PM   #15
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Whats the difference between the gear ratio (5th gear) on that Escort and the gear ratio on a MX3 and Probe tranny?
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Old September 24th, 2009, 03:53 PM   #16
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.717 versus .795
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Old September 24th, 2009, 04:17 PM   #17
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Quote:
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.717 versus .795
That's a big difference.

I think the next question is if anyone has a bolt-on ZE and has topped out one of these setups.
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Old September 24th, 2009, 04:49 PM   #18
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what year escort did you pull these gears from?
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Old September 24th, 2009, 05:12 PM   #19
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Definately Sticky worthy
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Old September 24th, 2009, 05:21 PM   #20
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nice writeup. whats your rpms @ 60mph now? i vote for sticky
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Old September 24th, 2009, 06:36 PM   #21
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Quote:
Originally Posted by BliZzArD599 View Post
nice writeup. whats your rpms @ 60mph now? i vote for sticky
I get 2600-2650 rpm @ 60 and 3k @70 which is what most of the 90's cars have. top speed should be somewhere around 155mph


Quote:
Originally Posted by 95blackoutgt View Post
what year escort did you pull these gears from?
What ever year has the same looking tranny as probes(except for the bell housing) would work, I started on 94 escort(boxy) but after I popped the cover I couldnt get the gears to lock up so I can unscrew the nuts, then I went to 97+(round looking) and the gears looked the same so I got them. Both cars had SOHC engine.
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Old September 24th, 2009, 07:24 PM   #22
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Great write up, I may have to do this as my bosses shop has an SE's tranny sittin in back.
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Old September 24th, 2009, 07:51 PM   #23
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I would think a 4.11 with Escort gears would top a lot higher.....considering a stocker 4.39 is doing 155 @ 7500 rpm, a stock 4.11 does 166 @ 7500 rpm.

There's a thread on it here somewhere.
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Old September 24th, 2009, 07:57 PM   #24
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well i m hitting up the j/y tomorrow. Maybe they got some PSE's in since I was there last, but the did have a 1g GT there. So i know what I m going to be getting

Thanks for the write up man! props!
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Old September 24th, 2009, 08:02 PM   #25
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I have had this in every transmission that I have put in my car, so...5-6 years now? Good write-up. I usually put the car in gear, then remove the pin from the shift fork then engage 5th. This in effect locks up the transmission so it is easier to bust loose those nuts on the end of the I/O shafts..but w/e method works.

You can also use n/a 2.2 1g 5th gear, or a festiva 5th if you REALLY want a big drop in rpm..but I found that the festiva gear is overkill and makes any sort of acceleration tough at highway speeds in 5th..
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