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post #15 of 298 (permalink) Old 08-08-2007, 09:54 AM
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What is the trick to separating the halves of the tranny case? There has got to be a hidden clip somewhere!!
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post #16 of 298 (permalink) Old 08-08-2007, 10:30 AM Thread Starter
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Originally Posted by GTCarAudio on Aug/08/07
What is the trick to separating the halves of the tranny case? There has got to be a hidden clip somewhere!!
There is a spot to pry. The hammer is stuck in the spot in the pic.
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post #17 of 298 (permalink) Old 08-08-2007, 10:49 AM
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s2000 mc works on a teg? Didnt know that.

I have most of the items in my garage that you needed to do this, exedy stg 1 and fidanza 7.5 fw, halfshaft, mounts, slave cyl...all of them just collecting dust .

... then halfway throught the project you get a phone call from a girl who you met a couple of weeks ago, saying her parents are gone for a couple of hours, and she wants you to come over and bang her gears and pop her vtec...
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post #18 of 298 (permalink) Old 08-08-2007, 02:16 PM Thread Starter
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Originally Posted by MR_GS-R on Aug/08/07
s2000 mc works on a teg? Didnt know that.
Yep, sure does. I figured since I was starting fresh, might as well get the shorter pedal travel of the S2K cylinder

DIY s2k master cylinder retrofit by silvertegGS
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post #19 of 298 (permalink) Old 08-08-2007, 02:25 PM
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gl with this man my car's conversion should be done in a couple of weeks

thatguybryan:if ami looked like a bald white dude, i think we could have found a match for barry blondechick89:have you noticed only stupid things go in sigs?
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post #20 of 298 (permalink) Old 08-08-2007, 10:15 PM Thread Starter
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8/8/07

After taking apart the GSR trans and doing some research, I decided that it was cheaper to put in an LS 5th gear and synchro sleeve vs paying $150 for a new sleeve from Acura.

LS 5th Gear
It just so happened that I have had in my possession a CABLE 5-speed LS transmission with a bad 3rd gear synchro. Considering that no one really beats up on 5th gear, I decided to rip out the good stuff in the cable LS.

Here's a shot of both trans on the workbench coffee table: (GSR on right, LS cable on left)



Gear ratios on GSR vs. Hydro LS vs. Cable LS transmissions are as follows:
GSR 5th: 0.787
LS (C) 5th: 0.742
LS (H) 5th: 0.714

I counted the teeth and verified both transmissions before proceeding.

As it turns out, the LS cable 5th is right smack dab in-between a standard hydro LS and a GSR transmission. Hopefully, this will be the perfect median between highway crusing and still having SOME ability to accelerate in 5th.

The engine this all is being bolted on to is a USDM B20Z.

To get the mainshaft/countershaft out of the tranny, you simply lift straight up. They come out together.

I then took the secondary shaft to a friends house and had him impact off the top nut.

To get the gears off the secondary shaft, you simply flip the shaft, and drop it on a block of wood like so:


Here's a shot of the secondary shafts next to each other with the gears pulled off:
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post #21 of 298 (permalink) Old 08-08-2007, 10:18 PM
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Quick question how hard is it to pull the main shaft and countershaft out of the trans to get to the input shaft bearing do you know?

rayzah_blade-"VTEC...spelling is not required, but i dont think phones came in a 4cyl. model." Read this and couldnt stop laughing.
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post #22 of 298 (permalink) Old 08-08-2007, 10:48 PM Thread Starter
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GSR vs. LS Synchro Comparison

We've all read/heard about the GSR's superior synchro's (and if you haven't, you have now). Since I have both transmissions apart I thought I'd share some of the internal differences between the transmissions. Lets start off with a general difference between cable and hydro transmissions.

The main difference between the old Cable transmissions and the newer Hydro transmissions is the shift forks. The hydro forks are welded and much stronger than the cable forks. The cable forks are 2 piece using a cast iron fork and a steel shaft. A roll pin holds the two sections together. The cable forks are also a bit heavier.

Hydro forks top, cable bottom:


Now on to the synchros.

The GSR transmission features oNE synchro that is different than the LS transmission. The 2nd gear synchro is built in a superior 2 piece design.

First the LS standard single cone synchro. You can see the cone is built into the gear and the synchro slows the gear when pressure is put on the brass synchro ring. The red friction area on the brass synchro ring slows the red synchro cone as the sleeve pushes on them while going into gear.




Now the GSR dual cone synchro. You can see the cone is a separate piece with a synchro both under and over it. The cone fits down into the 3 drilled holes effectively making the gear one piece when stacked. When moving into second gear, the synchro's sandwich the cone effectively doubling the braking surface applied to the cone. You can definitely "feel" the difference when you play with them outside the transmission. The GSR cone is superior not only for its larger braking area but also because of its easy to replace and rebuild nature. If only 3rd gear synchro's were built like this.

The blue area contacts the inner wall of the cone while the red area contacts the outer, just like the LS.


If you guys know of any other differences between the transmissions other than the bearings and gearsets (duh) then please post. I'd love to post up pictures showing any differences I may have missed.

Hope this helps people understand some of the differences that make the GSR/ITR transmissions superior to the LS.
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post #23 of 298 (permalink) Old 08-08-2007, 10:48 PM Thread Starter
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Quote:
Originally Posted by TheMadHatter on Aug/08/07
Quick question how hard is it to pull the main shaft and countershaft out of the trans to get to the input shaft bearing do you know?
You just grab them both and lift straight up. There is nothing holding them in.
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post #24 of 298 (permalink) Old 08-08-2007, 11:01 PM
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Damn I'd be so afraid of losing any parts to the synchros, especially with 2 trannys laying there......

Type [Yellow]R[/FONT]? Fuggitaboutit! I'm so sexy I have a Type [Green]GS[/FONT]!
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post #25 of 298 (permalink) Old 08-08-2007, 11:55 PM
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Nice work! Book marked!

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post #26 of 298 (permalink) Old 08-08-2007, 11:57 PM
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When you're done you're coming over to put this in my car right?

Do me a favor.From now on don't care what other people think about your car. Do what YOU want to your car. Who gives a damn what other people think about it.
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post #27 of 298 (permalink) Old 08-09-2007, 12:01 AM
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This is a great thread casey, going to help out with my trans this weekend for sure

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post #28 of 298 (permalink) Old 08-10-2007, 07:26 PM
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nice thread. I don't know much about working on transmissions so I hope to learn a lot from this thread.
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