Drive tunnel seal ext/int

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Graham W
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Drive tunnel seal ext/int

Postby Graham W » Fri Nov 16, 2018 6:53 am

did my NPS this week. Went in from the top.

Noticed the rubbers and boots around the stick dont really 'seal'
What stops the water ingress from the tunnel ?

Theres a rubber sheet, then a boot which just sat on the lower sheet, then a rubber sat on the top, all held down with 10mm bolts, but i can still see down to the shift connector.......


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Postby Graham W » Sat Nov 17, 2018 12:19 pm

No-one knew or replied, so ripped out and took a look.

The boot gasket on mine was in-between the two large rubber seals

it SHOULD have been fixed to the gearbox where it slots into the grooves and a wire strap.
Didn't have a strap so I've waterproof glued it on. It gets pushed downwards when the tunnel gasket is put on and some of the bellow pops through, its sealed on the shaft with a cable tie.

Then the top rubber and metal plate seals it all up.

Hope you understand the pics i took and posted and helps anyone.......

Gasket pre fitting on gearbox top....

Imagetunnel1

Tunnel gasket fitted and bellow pulled through .......

Imagetunnel2

Top gasket and metal ring fitted with 4 10mm bolts....

Imagetunnel3

Any feedback appreciated
:D

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labsy
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Postby labsy » Sat Nov 24, 2018 8:13 pm

Well, if you are concerned about water getting into cabin via tunnel, then I guess you better get some other vehicle - this one is not meant for deep water wading.
Before tunnel gets filled, you will such water:
- into cabin via mounting holes on bottom, there are some half dozen of them around
- into rear diff via breather
- into all 4 wheel bearings
8)

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Graham W
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Postby Graham W » Sun Nov 25, 2018 2:18 am

Issue was the waterproofing rubbers were not fitted at all
Correctly. Were all on in the wrong order and not secured.
The vehicle should be able to go a certain depth.

Wheel bearing are sealed or even mud and snow driving would
cause major issues. The front transfer box breather is up under the
IPDM, the rear dif should cope with being submerged without ingress
along mud and snow muddled tracks too? The standard breather hose is up
by the wheel arch?
I did see you extended yours to the light cluster.

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labsy
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Postby labsy » Sun Nov 25, 2018 5:20 am

Most issue related to water wading as from my perspective, are related with sudden temperature drop creating vacuum, thus sucking muddy waters inside, particularly:
- rear diff if breather is clogged
- all four wheel hubs

I did lots of submarine excursions in past years and I exchange rear diff's mud for oil every few months. Also did change all 4 wheel hubs couple of times already, OEM Nissan, not cheap Chinese.
That's just over-the-wheel-hub deep, not more.

But if you go deeper, like I was doing some more years ago, going front lights deep (aka wheel well just submerged), I did a crack on engine head not due to hydro-locking, but more likely because of freezing water being over, around and inside of hot intake valves area.
Of course, inside was flooded too. Water got in through cracked door bottom gaskets, then through monuting holes on bottom, and some I think came also from ventilation system, as hood was also flooded.
I did NOT notice floods coming in via central tunnel, despite of handbrake rubber was not sealing properly.

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Postby Graham W » Mon Nov 26, 2018 4:04 am

Thank you Labsy for your input, very interesting.

So what your saying is, this isnt a great idea??.....

Image

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underworld1001
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Postby underworld1001 » Tue Nov 27, 2018 10:38 pm

Seeing a manual in a SUV kinda screws with my mind a bit. The manual in general is rare in the US, but when I go overseas (Stockholm), I'm surprised by the number of manual vehicles. For some reason, most of my coworkers own a Nissan Qashqai and every one I've rode in has a manual. The only automatics I see are the Mercedes taxis. Hell even the airport shuttle vans are manual.

Anyhow, the floating PF is a novel idea. It would almost be a true survival vehicle at that point. Just need a way to get it airborne :D

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Postby Graham W » Wed Nov 28, 2018 7:21 am

underworld1001 wrote:Seeing a manual in a SUV kinda screws with my mind a bit. The manual in general is rare in the US, but when I go overseas (Stockholm), I'm surprised by the number of manual vehicles. For some reason, most of my coworkers own a Nissan Qashqai and every one I've rode in has a manual. The only automatics I see are the Mercedes taxis. Hell even the airport shuttle vans are manual.

Anyhow, the floating PF is a novel idea. It would almost be a true survival vehicle at that point. Just need a way to get it airborne :D
You mean an airbourn PF isn't real ????

Image

Yes my Photoshop skills are rubbish lmao

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Postby weaver » Sun Feb 10, 2019 1:01 am

Thanks for that Graham, hillarious :lol: Wouldn't want to be under that bird's droppings :shock: !


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