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Thread: Transmission gearbox leaking...

  1. #1
    PhilSSStevenson's Avatar
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    Transmission gearbox leaking...

    Finally found the culprit that causes a stiff gear linkage after a hot run.

    The forkin’ transmission is leaking. Changed the tranny oil two years ago and I think there ain’t much left. Nice old and enlarging spot on the gravel under the tranny. I never noticed before.

    Click image for larger version. 

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    So I’m gunna put new Redline MT-90 and this stuff, into the tranny and wait and see.

    This Wynn’s product (I purchased two), is unavailable in Oz (I can’t find any), so this is from Europe.
    http://www.ebay.com.au/itm/like/3319...pid=107&chn=ps


    I’m also going to apply a line of metal paste to the bottom join.


    Wish me luck. I’ll post later.
    Last edited by PhilSSStevenson; 13-10-2016 at 01:20 PM. Reason: typos...
    NISSAN Pulsar N14 SSS Oz spec - the SSS cult classic. Owned mine since 1992.

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    I wish you luck!

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    Need Input Cozzm0's Avatar
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    I'd be doing the job properly if it were me. When i say 'properly', i mean remove the gearbox, disassemble and reseal the casing.

    External patches and stop leak (thickening additives) are bandaids and with a car that is in such nice original condition it would be almost sacrilege to just whack some bog on the outside of the box and put some sawdust inside.

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    If in doubt, boost it out Paullus's Avatar
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    I doubt it's coming from the join. My money is on of the seals: driveshaft, inputshaft, selector rod.

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    PhilSSStevenson (31-10-2020)

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    Space Invaders Champion, Snake Champion, Asteroids Champion, Chopper Challenge Champion
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    Penrite 85w-140 if you want to gamble with a thicker oil - I rate it

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    Need Input Cozzm0's Avatar
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    Quote Originally Posted by Paullus View Post
    I doubt it's coming from the join. My money is on of the seals: driveshaft, inputshaft, selector rod.
    It does happen, but those other are definitely more likely.

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    PhilSSStevenson's Avatar
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    It is the join. Confirmed.

    As I do only 2,000 klicks a year now, (with 135,000 on the odo after 25 years) not sure if I wanna spend to professionally fix it at this time, even though I like it purrrfect. Will check leakage after fix.

    I'll give this a go and advise.

    bty: The Red Jett will be for sale in 2022. That is after 30 years of a one owner's seductive affair with it.

    Hang in there.

    Phil.
    Last edited by PhilSSStevenson; 15-10-2016 at 04:55 PM. Reason: typos...
    NISSAN Pulsar N14 SSS Oz spec - the SSS cult classic. Owned mine since 1992.

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    PhilSSStevenson's Avatar
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    Quote Originally Posted by Cozzm0 View Post
    I'd be doing the job properly if it were me. When i say 'properly', i mean remove the gearbox, disassemble and reseal the casing.

    External patches and stop leak (thickening additives) are bandaids and with a car that is in such nice original condition it would be almost sacrilege to just whack some bog on the outside of the box and put some sawdust inside.
    Oh what have you done to me Cozzm0?

    OK, you put me to shame. The leak has got worse over the last four years. Huh, I already knew about it.

    OK, who ever get's the Red Jett in five years better remember this.

    I'll get a quote from a reputable garage, most likely go Von Bibra Nissan Gold Coast. Lots of experience.

    Thanks Pal, you prolly cost me $600.00 bucks!

    Phil.
    NISSAN Pulsar N14 SSS Oz spec - the SSS cult classic. Owned mine since 1992.

  10. #9
    Need Input Cozzm0's Avatar
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    K'mon Phil, i thought you were a DIY guy ?! You can pop the case off with the box still in the car, but it makes the whole job a lot harder.

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    PhilSSStevenson's Avatar
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    Ah-hem… I was a DIY guy. Now gettin' long in the tooth and sick of skinned knuckles and bruised arms. I wish I had a hoist. That would be lotto for me.

    No, I'm gently rockin' the Jett towards its 30th birthday and then seeing who wants to look after it.

    I am perplexed that there are no PURPOSE manual gearbox stop leaks in Oz.
    I gave the Wynn's option a miss… Postage - was 40 quid from Europe.
    So looking at this one. Check it out:
    http://store.gobdp.com/transmission-sealer-00236/

    Note that after the words, Blue Devil, are 'do it yourself'… Ah, all my life is just a circle…
    The reviews, on Amazon, were all avg. 4 stars.

    Looks the goods…


    Phil.
    Last edited by PhilSSStevenson; 16-10-2016 at 01:03 PM. Reason: typos...
    NISSAN Pulsar N14 SSS Oz spec - the SSS cult classic. Owned mine since 1992.

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    PhilSSStevenson's Avatar
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    Well, tranny oil changed today. As this leak has been, I think, causing my linkage to tighten after a hot uphill run.

    However, I got about three litres out and in good colour. Minute filings around the sump plug magnet. Nought to worry about there.

    Replaced 3.6 litres of Redline MT-90, along with 120 mill of BlueDevil transmission sealer.
    http://store.gobdp.com/transmission-sealer-00236/

    Took the Red Jett for a hot run to Canungra (Gold Coast Hinterland) and back. All is well.

    However, I think the linkage stiffening, might be because I removed the heat shield, which would sit below the shifter and cook it up.
    Wrapped that piece of pipe (was once where a feline roamed), with header wrap.

    Let's see now...
    Last edited by PhilSSStevenson; 03-11-2016 at 02:12 PM.
    NISSAN Pulsar N14 SSS Oz spec - the SSS cult classic. Owned mine since 1992.

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    Need Input Cozzm0's Avatar
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    Removed heat shields for weight reduction? or because you can ?

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    PhilSSStevenson's Avatar
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    It was a weight reduction thing I did. Spoke to Colin Chapman about it...
    NISSAN Pulsar N14 SSS Oz spec - the SSS cult classic. Owned mine since 1992.

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    PhilSSStevenson's Avatar
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    OK, verdict is now in. The BlueDevil product has fixed the tranny leak. No more there.

    This stuff was like water and clear. I can recommend it. Can only be sourced from the US.
    http://store.gobdp.com/transmission-sealer-00236/

    One happy camper...
    NISSAN Pulsar N14 SSS Oz spec - the SSS cult classic. Owned mine since 1992.

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    PhilSSStevenson's Avatar
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    Quote Originally Posted by Cozzm0 View Post
    I'd be doing the job properly if it were me. When i say 'properly', i mean remove the gearbox, disassemble and reseal the casing.

    External patches and stop leak (thickening additives) are bandaids and with a car that is in such nice original condition it would be almost sacrilege to just whack some bog on the outside of the box and put some sawdust inside.

    Oh Cozzm0, After four years, it is still leaking. Bugga!

    So, as I'm doing a full restore, it's off the Black Magic to get repaired. The prop.of Black Magic had a SSS N14 once and fitted a SR20DET to it. So he's the one.

    https://blacklabelautomotive.com.au

    Any advice. Do I need gasket?

    Cheers.
    NISSAN Pulsar N14 SSS Oz spec - the SSS cult classic. Owned mine since 1992.

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    Need Input Cozzm0's Avatar
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    Its all liquid gasket between the two halves, there is an o-ring under the end cap cover, but pretty much just reuse the o-ring and goo the crap out of it and you'll be fine.

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  19. #17
    PhilSSStevenson's Avatar
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    Quote Originally Posted by Cozzm0 View Post
    Its all liquid gasket between the two halves, there is an o-ring under the end cap cover, but pretty much just reuse the o-ring and goo the crap out of it and you'll be fine.
    Thanks very much. I might as well replace all appropriate seals as well.

    Cozz, would you please advise what seals are required.

    Cheers, Phil.
    NISSAN Pulsar N14 SSS Oz spec - the SSS cult classic. Owned mine since 1992.

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