Increased Fuel Tank

[TCMColorado]

Using just the replacement 37.7 gal main tank from Skyline would provide a great deal of additional range. I am seriously considering it. If it turns out to be rubbish the OEM tank could be put back in. I suspect getting the Euro version resonator center section for the exhaust will cost as much as the Skyline main tank .

 

[TCMColorado]

Install instructions for the Skyline tanks at the link, go to page 4. I don't read Chinese/Mandarin but the images make it self explanatory. Not a difficult install especially for the main tank only.

Skyline Installation Instructions

 

[Silverjay]

Skyline is working on adjusting their tank to fit the US design. I am supposed to get a shipped/tariff cost this week.

 

[Silverjay]

Just heard from them. The main tank only will be $1,183 plus $452 for shipping and tariff to my Nevada address.

 

[TCMColorado]

Just heard from them. The main tank only will be $1,183 plus $452 for shipping and tariff to my Nevada address.

Totally worth trying for the cost. I am inclined to order both tanks. Install the main tank first and if there are no issues then go ahead with installation of the aux tank.

 

[Beowulf]

I wonder if shipping on both tanks would not be much more than the single tank shipment

 

[Silverjay]

They said Mid march they would be ready to ship.

 

[TCMColorado]

I wonder if shipping on both tanks would not be much more than the single tank shipment

That is what I was thinking. Both tanks would go on the same crate and not have much incremental cost.

 

[Silverjay]

Sounds like same shipping from one or both. They are not going to take orders until fabrication is completed. I put my name in for a full set when complete.

 

[Clark Kent]

Have any of you guys done the beermat maths on what this does to your weight, payload and front and rear spring rates?
It would be nice if these companies would publish the net weight difference after modification not just the weight of their own products.

I'm doing similar currently. I had the LRA 68 litre diesel aux tank fitted this week but have yet to fill both tanks to see the effect on my ride height. I do have airbags for towing but full tanks plus towball weight might be too much for airbags alone so there could be a rear spring change required due to the net weight gain. TBD.

The original rear muffler weighs 10kg. I stood on the scales with it today. That's the diesel muffler. I haven't checked if the petrol Grenadier has the same rear muffler part number but the weight will be similar.

 

[Silverjay]

Fully loaded the extra fuel and added tank increase load by ~210lbs pretty close to centered on the back seat. I didn’t go any further than that.

 

[Clark Kent]

Fully loaded the extra fuel and added tank increase load by ~210lbs pretty close to centered on the back seat. I didn’t go any further than that.

So roughly 13% loss of payload on a clean skin wagon. Not horrible but that's going on top of whatever other weight has already been added during a build. It's worth keeping in mind if your vehicle is already a bit tubby.

 

[DenisM]

So roughly 13% loss of payload on a clean skin wagon. Not horrible but that's going on top of whatever other weight has already been added during a build. It's worth keeping in mind if your vehicle is already a bit tubby.

My conservative beermat calcs have the BD tank etc at approx 20kg plus 68L x.spec grav of 0.85 for diesel = say 58 kg minus 10kg for the muffler... so 68kg total.
The "moment" of a full aux. tank in terms of its chassis position, exerted on the rear axle is approx 75kg.(I think)

 

[Clark Kent]

My LRA kit shipping weight is 36kg so I'll use that figure.
They squeezed 66 litres into the tank during leak testing. 66 x 0.85SG = 57kg with a full filler pipe.
Deduct the rear muffler @ 10kg.

Tank net weight:
(36+57)-10 = +83kg net gain full.
36-10 = +26kg net gain empty.

The LRA tank centre is 0.4m behind the axle. The wheelbase is 2.92m.

Wheelbase leverage (the moment):
Full. 83kg x (0.4m/2.92m) = 11.37kg.
Empty. 26kg x (0.4m/2.92m) = 3.56kg.

Rear axle load (tank + leverage):
83 + 11.37 = +94.37kg gain when full.
36 + 3.56 = +39.57kg gain when empty.

That's close to your beermat based on a lighter tank @DenisM

 

[Krabby]