Jump to content

Fitting a 90 fuel tank to a 110? - Twin tanks

Recommended Posts


I am in the process of getting ideas together for a twin tank conversion in order to effectively run vegetable oil or any mix of it.

I think I have decided the best way to do it is to have a second tank for diesel with a pollak 6 port to split the tanks so I can start and stop on diesel and run on veg with a series of fuel heaters.

So I need another tank to hold the non-mixed diesel.

So history aside...can I fit a 90 fuel tank to a 110? seems a simple solution and would mean I can easily fit a gauge and a guard. There is nothing non standard on the RHS underside of my vehicle apart from rock sliders.

Pictures would be good also :)



Link to comment
Share on other sites

I have a 90 tank under the drivers seat on my LPG 110. I made the front mount out of angle but these are available for about £25 and at the back with two 40mm spacers the tank bolted back onto the outrigger. Mine is a station wagon so I have a filler under the seat series style

Link to comment
Share on other sites

I brought a new 90 tank to do this and the correct land rover metal work that comes of the chassis, The plan was to use a series filler, which fits to the tub. I also brought on the advise of my local LR specialist that also fits lpg kits, a couple of lpg/petrol switch over valves really cheap. when connected the fuel gague will change to which ever tank is turned on.

However I then brought a 110 for spares that had a extra long range tank fitted under the drivers seat which also filled up in that position the same as the series military vechiles. If you can find one of these I think it would be the best option, I have seen them on Ebay and they are genuine land rover.

Link to comment
Share on other sites

Mines a CSW aswell, so what is the best option for the filler? can I do this with all land rover parts? possibly including the change over equipment?

Land rover did a long range tank si would imagine they did switch over gear as well, there is a parts request section on here under the forums> might be worth putting in a request on there for part numbers. In the pass I have seen them for sale on Ebay., i think the best option for the filler is to have it mounted directly on to the tank so its directly under the drivers seat.

Link to comment
Share on other sites

  • 1 month later...

My Camel is a station wagon and has the under-driver-seat tank (as they all did I think) and there are no issues.

It fills from the top. You remove the driver seat base and metal plate to access it.

It'll be a Land Rover part.

I'm sure someone with more experience will know if the tanks are a different shape or the same.

Link to comment
Share on other sites

I am doing the same thing. The proper Defender long range tank is obsolete and I cannot find one anywhere. I am using a Series Military one from Bearmach who have a few, no one else seems to have any. I don't have the part number to hand, but I should be able to get it next week.

Link to comment
Share on other sites

Hmm I need a aux tank not a extender tank

may have a new plan if LR parts don't work

fit these parts...

33L fuel tank £65


Deck filling kit £16


Filler cap £19


then when I find more cash...

Electric sendor and gauge



If I do that I should be able to fit the full conversion for less than £200, what do you think?

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

We use cookies to ensure you get the best experience. By using our website you agree to our Cookie Policy