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Thread: Drivetrain Refurb questions

  1. #1
    Senior Member Trstno1's Avatar
    Join Date:  Aug 2014

    Location:  Anchorage, Alaska

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    My VIN:    5625

    Drivetrain Refurb questions

    Iím about to pull my manual transmission to do a bunch of work on 5625. I was going to replace the clutch, rear main seal, clutch master, clutch slave, clutch line from plastic to braided, and potentially crack the transmission open to change out the 2nd gear roll pin.

    This is all to fix a rear main seal leak, a clutch slave cylinder leak, and an issue with shifting into 2nd gear when the vehicle is cold.

    What are the things I need to take special attention to while doing to prevent more issues than I want?

    Will I need to drain the engine oil prior to pulling the rear main seal?

    Does anyone have pictures on how they braced the engine prior to pulling the transmission?

    Does anyone have pictures on exactly what to disconect on the cross gate cable as to not screw up the adjustments?

    As always, thank you in advance for all your help!
    You can't buy happiness, but you can buy a DeLorean and that's sort of the same thing....

  2. #2
    EFI'd dn010's Avatar
    Join Date:  Jul 2011

    Location:  Florida: Pinellas County

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    Quote Originally Posted by Trstno1 View Post
    I’m about to pull my manual transmission to do a bunch of work on 5625. I was going to replace the clutch, rear main seal, clutch master, clutch slave, clutch line from plastic to braided, and potentially crack the transmission open to change out the 2nd gear roll pin.

    This is all to fix a rear main seal leak, a clutch slave cylinder leak, and an issue with shifting into 2nd gear when the vehicle is cold.

    What are the things I need to take special attention to while doing to prevent more issues than I want?

    Will I need to drain the engine oil prior to pulling the rear main seal?

    Does anyone have pictures on how they braced the engine prior to pulling the transmission?

    Does anyone have pictures on exactly what to disconect on the cross gate cable as to not screw up the adjustments?

    As always, thank you in advance for all your help!

    I also had issues with 2nd gear. I replaced the roll pin because I was in the transmission at one time fixing some other damaged items. However my issues remained. It wasn't until I installed a new crossgate cable (101363), bushing kit (K100776) and adjusted everything, that I finally solved my 2nd gear issues. It was a huge difference shifting with these new parts.
    Last edited by dn010; 02-05-2020 at 09:45 AM.
    -----Dan B.

  3. #3
    Senior Member Trstno1's Avatar
    Join Date:  Aug 2014

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    My VIN:    5625

    Quote Originally Posted by dn010 View Post
    I also had issues with 2nd gear. I replaced the roll pin because I was in the transmission at one time fixing some other damaged items. However my issues remained. It wasn't until I installed a new crossgate cable (101363), bushing kit (K100776) and adjusted everything, that I finally solved my 2nd gear issues. It was a huge difference shifting with these new parts.
    Huh...interesting. What was your original 2nd gear issue? The same as mine? I seem to only have issues when the vehicle is cold. When it warms up, no issues at all getting it into 2nd.
    You can't buy happiness, but you can buy a DeLorean and that's sort of the same thing....

  4. #4
    EFI'd dn010's Avatar
    Join Date:  Jul 2011

    Location:  Florida: Pinellas County

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    When cold, it would either not go into gear or grind terribly, so much that I would skip 2nd gear altogether it was that bad. When everything was warm I would still sometimes have an issue downshifting into second where I would think it was in gear but once I hit the gas it would just rev. Now it goes into gear and doesn't grind regardless of temp and I don't have to force the shifter.

    Your combination of leaking slave cylinder, plastic line, worn bushings or a misadjustment might be enough to cause issues until the gear oil has warmed up.
    -----Dan B.

  5. #5
    Senior Member Bitsyncmaster's Avatar
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    Location:  Leonardtown, MD

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    You may want to read my thread when I pulled the tranny.

    http://dmctalk.org/showthread.php?16...-replace/page3
    Dave M vin 03572
    http://dm-eng.weebly.com/

  6. #6
    Senior Member
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    i just refreshed my transmission replaced the 2nd gear pin and red loctited the two big nuts on the end.

    if you are pulling the transmission.....and these two things have not yet been done- then do it.

    my 15K mile car - the 2nd gear roll pin was bent on the top side, and broken off (and stuck to the magnet inside) on the bottom side.
    my large shaft nuts were not very tight but had not yet backed off.

    you need several tools to do the job, best to get the Renault transmission manual for un1 and un5 transmissions, as the DMC does not have all the details.



    Mark
    Member- Norcal Delorean Owners Group
    Owner- Vin 2855 "The Mongoose DeLorean"

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  7. #7
    Senior Member vwdmc16's Avatar
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    I also had shifting problems with my car when I got it. , 2nd gear going into 3rd gear and popping out of 5th gear. . When I change transmission fluid from regular gear oil to Redline MTL, The shifting improve greatly in 2nd and 3rd when cold and hot.

    Eventually, I did a full transmission reseal and freshening. . My second gear roll pins were all broken. So fixing that and reinforcing them really improve second gear. . My 5th gear still had issues popping out on deceleration. That was not fixed until I rebuilt the shifter mechanism. In the front of the car.

  8. #8
    Senior Member Trstno1's Avatar
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    Quote Originally Posted by Bitsyncmaster View Post
    You may want to read my thread when I pulled the tranny.

    http://dmctalk.org/showthread.php?16...-replace/page3
    Will do, thanks!
    You can't buy happiness, but you can buy a DeLorean and that's sort of the same thing....

  9. #9
    Senior Member Trstno1's Avatar
    Join Date:  Aug 2014

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    Quote Originally Posted by mark w View Post
    i just refreshed my transmission replaced the 2nd gear pin and red loctited the two big nuts on the end.

    if you are pulling the transmission.....and these two things have not yet been done- then do it.

    my 15K mile car - the 2nd gear roll pin was bent on the top side, and broken off (and stuck to the magnet inside) on the bottom side.
    my large shaft nuts were not very tight but had not yet backed off.

    you need several tools to do the job, best to get the Renault transmission manual for un1 and un5 transmissions, as the DMC does not have all the details.



    Mark
    Wow! That tranny looks beautiful! I sure wish I had the time to make that happen! When you say several tools, what do you mean? specialty tools? Also, did you make any videos cataloging your refurb?
    You can't buy happiness, but you can buy a DeLorean and that's sort of the same thing....

  10. #10
    Delorean Guru
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    If you have trouble with 2nd gear all the time you probably need the roll pin. If it only happens when cold, you should switch to Redline. Check for any worn or loose parts in the shift linkage. Get the 2 big nuts really tight and use Locktite. Check the mounts for cracks. Some of the vendors sell a pin to put INSIDE the new roll pin (a smaller one) just to make it stronger. Make sure the 5th gear fork is not bent. Watch out for the detent springs and balls.
    David Teitelbaum

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