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  #1  
Old October 7th, 2012, 11:02 PM
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peter
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Tunnels, consoles, and tdi conversions

Hey everyone,

So it's day three of the dismantle of the current efi setup. One thing that came up today that pissed me off is the previous owner hacked the tunnel to fit his custom auto gearshift setup. He basically used a cutoff wheel and took off most of the lip that holds the foam/rubber insulator that seals the transmission and transfer case shifters.

So I would like to get a new tunnel. I don't want to half ass it and pretend like its ok. So here is the question: I am doing the 300tdi swap now. So if I have an lt77 tunnel and I need a new one...will any tunnel work? Are the diesel and gas ones the same (diesel and gas r380 tunnels)? What's the difference between the lt77 and r380 tunnels? Or the diesel for that matter?

I am doing an auto tdi swap with the NAS center console so I need the transfer case shifter to be in a location relative to its original with the 97 NAS auto.

Seems like the v8 auto and tdi auto are the same length, and it seems like the auto and manuals are the same as well. The auto in place of the lt77 currently seems to be the same position relative to the transfer case shifter. The rubber pads fits ok with respect to the transfer case shifter location. The rubber pad fits a-ok.

One thing I haven't done is get the existing center console out and mock up the NAS auto console to see how the transfer case shifter aligns with the console. That would give me an idea of a tunnel difference if any.

Any insight or helps is appreciated. Any suggestions on what path I should follow?

Thanks,
Pete
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  #2  
Old October 7th, 2012, 11:08 PM
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Neat..
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  #3  
Old October 8th, 2012, 01:19 AM
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I believe the NAS V8 tunnel (regardless if your truck came with an lt77 or r380) is the same as the 300tdi tunnel. So you would need an r380/300tdi tunnel, like so:

http://www.ebay.co.uk/itm/Land-Rover...item1e72ea0356

Same as what you have now.
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  #4  
Old October 8th, 2012, 07:46 AM
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My lt77 tunnel is different than the TD5/300tdi. My 110 was a TD5 and I needed a different tunnel and seatbox to work with an LT77
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  #5  
Old October 8th, 2012, 09:10 AM
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Quote:
Originally Posted by Macker View Post
I believe the NAS V8 tunnel (regardless if your truck came with an lt77 or r380) is the same as the 300tdi tunnel. So you would need an r380/300tdi tunnel, like so:

http://www.ebay.co.uk/itm/Land-Rover...item1e72ea0356

Same as what you have now.

This. All NAS defenders, 300tdi rdefenders, and td5 defenders used the fiberglass r380 tunnel. If yours is aluminum then its an lt77. The shifter on the ZF4hp22 for the lt230 should be the same as you note. The difference between the v8 and the tdi versions of the tranny are the torque converter and governor.
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  #6  
Old October 8th, 2012, 09:59 AM
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Thanks for the info guys. Mine is not metal its plastic. So yea looks like the one. Thanks!
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  #7  
Old October 8th, 2012, 08:47 PM
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The header at the bulkhead and at the seat box is different for the different tunnels, lt77 Vs R380. The tunnel is different too. They make a conversion kit to convert a lt77 to an R380 but you neet to do some cutting to the seatbox.
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  #8  
Old October 8th, 2012, 09:15 PM
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peter
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Were the NAS ones different? It seems after all the pics I've been finding that my tunnel sure looks like an r380 one. Unless I just have one in there from previous owners?
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  #9  
Old October 8th, 2012, 10:59 PM
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Quote:
Originally Posted by MC22958
The header at the bulkhead and at the seat box is different for the different tunnels, lt77 Vs R380. The tunnel is different too. They make a conversion kit to convert a lt77 to an R380 but you neet to do some cutting to the seatbox.
True-I got an lt77 seat box thats going to need a little cutting to make it work with a ZF Auto.
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  #10  
Old October 8th, 2012, 11:23 PM
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peter
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Here is what my stuff looks like.

I have had other hybrid things, maybe this is one as well?
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  #11  
Old October 8th, 2012, 11:38 PM
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This spring I changed out my stock 94 NAS v8/LT77 for a uk spec 98 300tdi/R380. The seat base, plastic tunnel and firewall/ bulkhead all fit. The UK spec seat base for this setup is a different LR part number but it was no way worth the $ time and effort to switch. The only difference is clearance to the top of the r380, it still fits but it's close. In the end it does not rattle or make contact.
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  #12  
Old March 6th, 2017, 03:45 PM
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Bringing back this thread from the past.

I have a 1985 110 ROW that has 300tdi, R380, but upon closer examination (and while trying to install the exmoor 3 piece floor, the tunnel isn't even close. The tunnel is metal, and smaller than the molding. Is it possible that someone fit the R380 into the LT85 tunnel? Would the shifter and bits fit properly? I'm trying to find a tunnel insulation solution. Nothing is easy on the this truck.

Is there anywhere that has a tunnel ID (some pics or comparison dimensional specs?
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  #13  
Old March 6th, 2017, 04:10 PM
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The LT77 tunnel has a rectangular opening, and is fairly symmetrical. The LT85 is very similar to the R380, but has a single round hole in the tunnel. Both LT85 and R380 have a similar seat box, with a bump on the right side (if looking from the rear.) The R380 tunnel is fiberglass though.

Here is a pic of someone that hacked an LT85 to fit an LT77.They would have to do something similar to a LT85 tunnel to get a R380 to fit.
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  #14  
Old March 6th, 2017, 05:47 PM
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I'm sitting on an LT77 tunnel and an LT85 trans. I'm sort of dreading this step of the process as I'm not sure what fitment issue there will be. Likely I'll be busting out the metal brake and fabbing up a new tunnel... unless there is an lt85 tunnel that comes available.
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  #15  
Old March 6th, 2017, 10:34 PM
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The mysterious case of 'which parts do I really have'... The plot thickens.

I guess I'll submit a photo or two, maybe someone can identify the culprit. Sorry, the tunnel is little camouflaged in dynamat.
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  #16  
Old March 6th, 2017, 10:47 PM
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Quote:
Originally Posted by GliderKing View Post
The mysterious case of 'which parts do I really have'... The plot thickens.

I guess I'll submit a photo or two, maybe someone can identify the culprit. Sorry, the tunnel is little camouflaged in dynamat.

That is an LT77 setup.
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  #17  
Old March 6th, 2017, 10:55 PM
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Is it a stumpy R380?
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  #18  
Old March 6th, 2017, 11:05 PM
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LT77?

OK, more clues. It shifts with Reverse down to the right... maybe I'm seeing things, but could it be a LT77 tunnel, with a R380 inside? or R380 stumpy inside? Are the two compatible? (I mean, maybe i'm driving proof that they are LOL).
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  #19  
Old March 6th, 2017, 11:07 PM
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Look like mine, stumpy r380, lt77 tunnel
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  #20  
Old March 6th, 2017, 11:19 PM
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Robert Bingham
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ah ha! Thank you all for the ID. There is hope for me yet.... It appears there might be several LT77 tunnels out there? An early one (which i might have) and a later one.

BTW, this link is helpful should someone be searching for this a later time
http://www.defendersource.com/forum/...new-25296.html
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