PDA

View Full Version : K20 Transmission tear down DIY



PetefromtheStreets
02-27-2014, 02:29 PM
This is a k20 transmission tear down diy to basically show you what to do to crack open the case and remove the gear set/diff.

That being said this will start off with you already having the trans out of the car.

1) take a 14mm Allen head socket and remove this cap/cover

http://img.tapatalk.com/d/14/02/28/2ezysaba.jpg

You'll see the countershaft bearing and it's held in by a clip (don't touch the clip just yet)

http://img.tapatalk.com/d/14/02/28/ubytyvy7.jpg

Now take an 8mm amen head socket and remove this bolt. It locks the shift selector into place.
http://img.tapatalk.com/d/14/02/28/tupera5u.jpg

Then remove these 3 bolts
http://img.tapatalk.com/d/14/02/28/e2azebe9.jpg


BUT Careful!!! They're small Springs and balls inside. These are to help the shift forks rest in place in any particular position.
http://img.tapatalk.com/d/14/02/28/yrehy5ut.jpghttp://img.tapatalk.com/d/14/02/28/upy2edug.jpghttp://img.tapatalk.com/d/14/02/28/ubaqeju7.jpg

After removing those with a magnetic till or whatever fashion you see fit it's time to pull the shift selector out of the trans.

You do so by removing the 4 screws on top of it and a tip while removing it is to make sure the trans is in neutral. This lines up all the tabs on your shift fork like such

http://img.tapatalk.com/d/14/02/28/y8ure2yv.jpg
http://img.tapatalk.com/d/14/02/28/y3ypepem.jpg

If it's in a gear you will see one shifted like this abs that makes removing the selector difficult for no reason.

http://img.tapatalk.com/d/14/02/28/ybavyvup.jpg

Now use a 14mm socket to pull the reverse idler bolt
http://img.tapatalk.com/d/14/02/28/qy8yvemy.jpg

And a 10mm to remove your speed sensor depending on the year of your car.

The 5 speed and 6 speed both use the same sensor but you'll need a spacer to go between the sensor and trans casing if your swapping to a 5 speed gear set like I am.
I used a Fender washer. It was the perfect thickness.

http://img.tapatalk.com/d/14/02/28/y9a4ary6.jpg

Now take and remove all of the 12mm bolts holding the two case halves together. Take note where the long ones go as well as brackets. It will be easy to see why you need a line bolt in a given spot due to the thickness of the case.

The spot I used to pry is right under the speed sensor

Once all those books are removed grab a pair of snap ring pliers and a flat head screw driver or small pry bar.

Search for an area easy to use to separate the casing. Open the C-clip on top of the countershaft like so.
http://img.tapatalk.com/d/14/02/28/aqymyzap.jpg

While holding that open use your flat has to pay apart the casing. You'll see one you've lifted the case enough you no longer have to keep hold of that C-clip.

Then bang!!!!! You've now exposed the gears diff and bearings.

http://img.tapatalk.com/d/14/02/28/u9equ7a5.jpg

No its time to pull the. Shafts out along with the gears.

Take and simply slide up the reverse gear and the shaft it rides on. (take note of the shafts hole direction. It's important for when your assembling the transmission back together. If it's not like up correctly you will not be able to put that 14mm bolt back in place.


Now remove the 2 10mm bolts from the revered arm and pull that off to the side
http://img.tapatalk.com/d/14/02/28/yzadutag.jpg


No take hold of the shift forks and both shafts and pull up and wiggle the gears should remove quite easily.
https://www.dropbox.com/s/c9wfq7pata5p4g7/20140221_200549.mp4

Take not if the washers that are on the end of the mainshaft. One is a sorting washer and needs to be kept in correct orientation.

http://img.tapatalk.com/d/14/02/28/naduqaby.jpg

Next the diff will pull out. You may have to wiggle a bit. I didn't take a picture of this.


Now your left with a case full of bearings, and if your like me, a bunch of metal in the case and magnet. And I have too many pictures of carnage lol


Take your time do it right and you'll get it done without a fight! That rhymes!


s4 IG-petefromthestreets
Cage plus radio member #1

Frostydc5
02-27-2014, 03:11 PM
Your the man ! Great write up! So I need a spacer on my speed sensors since I put a 5 spd gear set in my 6psd case?

PetefromtheStreets
02-27-2014, 03:16 PM
Your the man ! Great write up! So I need a spacer on my speed sensors since I put a 5 spd gear set in my 6psd case?

Exactamundo!!

s4 IG-petefromthestreets
Cage plus radio member #1

Spaz
02-27-2014, 03:19 PM
very nice write up and great photos

PetefromtheStreets
02-27-2014, 03:20 PM
very nice write up and great photos

Thanks mane

s4 IG-petefromthestreets
Cage plus radio member #1

Frostydc5
02-27-2014, 04:03 PM
Exactamundo!!

s4 IG-petefromthestreets
Cage plus radio member #1

good to know hopefully its assembled today

PetefromtheStreets
02-27-2014, 04:04 PM
good to know hopefully its assembled today

It better be! Lol

s4 IG-petefromthestreets
Cage plus radio member #1

Frostydc5
02-27-2014, 04:16 PM
It better be! Lol

s4 IG-petefromthestreets
Cage plus radio member #1

one can only hope

PetefromtheStreets
02-27-2014, 04:18 PM
one can only hope

No no. You gets it done.

s4 IG-petefromthestreets
Cage plus radio member #1

Frostydc5
02-27-2014, 04:19 PM
No no. You gets it done.

s4 IG-petefromthestreets
Cage plus radio member #1
depends what time i leave work and if i have time to drive to apf

PetefromtheStreets
02-27-2014, 04:33 PM
depends what time i leave work and if i have time to drive to apf

Pshhhh if you have time. You do it! #showcarnation stand up!

s4 IG-petefromthestreets
Cage plus radio member #1

Frostydc5
02-27-2014, 04:56 PM
Pshhhh if you have time. You do it! #showcarnation stand up!

s4 IG-petefromthestreets
Cage plus radio member #1

Stand up!!!
btw i called John to see if he had a little spacer i could use, i guess my trans already has a spacer there lol. even better i said.. haha #showcarnation

PetefromtheStreets
02-27-2014, 05:03 PM
Stand up!!!
btw i called John to see if he had a little spacer i could use, i guess my trans already has a spacer there lol. even better i said.. haha #showcarnation

The ep3 trans should have it factory so Yea.

s4 IG-petefromthestreets
Cage plus radio member #1

monjarassi
02-27-2014, 06:29 PM
bad ass DIY. Repped

PetefromtheStreets
02-27-2014, 11:21 PM
bad ass DIY. Repped

Thanks man!

s4 IG-petefromthestreets
Cage plus radio member #1

K20Tuned
03-07-2014, 10:24 PM
sweet ... I saw the spacer on the vss sensor and I was like ... someone is running longer ratio 3rd!
good stuff man ...

PetefromtheStreets
03-07-2014, 10:27 PM
sweet ... I saw the spacer on the vss sensor and I was like ... someone is running longer ratio 3rd!
good stuff man ...

Haha yea that's a custom ebay special spacer. Base rsx 3rd ftw!

s4 IG-petefromthestreets
Cage plus radio member #1

K20Tuned
03-07-2014, 10:32 PM
lol cool man .. yeh i've done a few that's how i recognized it ... nice write up bro. oh and also the PPG install is good info in that other thread you made.

PetefromtheStreets
03-07-2014, 10:44 PM
lol cool man .. yeh i've done a few that's how i recognized it ... nice write up bro. oh and also the PPG install is good info in that other thread you made.

Thanks man. The only reason I looked for the issues/modifications needed to install were from a comment on a YouTube video of all places. If I knew their name I'd shout them out. Buy his project car site is kswapcrx.Com. But without their video and comments I would have had a bunch of unnecessary grinding like they experienced.

s4 IG-petefromthestreets
Cage plus radio member #1

aLmk
03-08-2014, 01:33 AM
Just now seeing this, really nice write up :thumb:

PetefromtheStreets
03-08-2014, 11:12 PM
Just now seeing this, really nice write up :thumb:

Thanks man

s4 IG-petefromthestreets
Cage plus radio member #1

Frostydc5
03-08-2014, 11:51 PM
PetefromtheStreets your video link for removing the gears is not working anymore at least for me it didnt

PetefromtheStreets
03-09-2014, 01:25 AM
PetefromtheStreets your video link for removing the gears is not working anymore at least for me it didnt

Damn... It said my dropbox was full so I deleted old stuff.. I'll re upload and post the new link.

s4 IG-petefromthestreets
Cage plus radio member #1

PetefromtheStreets
03-09-2014, 01:34 AM
Frostydc5 fixed. Try it now

s4 IG-petefromthestreets
Cage plus radio member #1

Frostydc5
03-09-2014, 01:37 AM
Frostydc5 fixed. Try it now

s4 IG-petefromthestreets
Cage plus radio member #1
all better

PetefromtheStreets
03-09-2014, 01:41 AM
all better

Yay. Lol. Thanks for letting me know

s4 IG-petefromthestreets
Cage plus radio member #1

Frostydc5
03-09-2014, 08:53 PM
Yay. Lol. Thanks for letting me know

s4 IG-petefromthestreets
Cage plus radio member #1
anytime homie!