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How to get tank secured in this?

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Hi, just bought a Toyota Hi-ace and need to get my tank in there asap. Was going to bolt the tank to the chassis like the last one but on one side there is a fuel tank and the other exhaust shielding. How can I do it or are there any other options? Thanks

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Thanks, good idea. I don't fancy trying to drill through that myself with the fuel tank right where I'd want the bolts to go.

Has anyone ever taken the floor cover/ply up and welded the cage directly to the metal floor?

Alternatively, can you get rivets strong enough if there isn't access at the rear to put the bolts through?

 
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Welding sound fun, but what a tremendous pain to get it out again..

You need proper beefy spreader plates under the floor from what I understand.

Edit: what kind of tank do you have? A picture would help.

 
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I'm not really sure what people mean exactly by 'bolt it to the chassis'. Does it mean through the box sections of the chassis (A) or through the floor with a spreader plate? (B) See pic.

@Nudel I've got a 600L IBC. I know they're not the most popular... But it's the small IBC not the huge one. Even so I'm making a cage to go around it made of 'L' shape angle steel and going to baffle it with perforated 4" pipe. 

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just bore the holes from underside using a 6mm drill bit and then use a 10mm drill bit.

4 M10 bolts with a heavy washer and nut. These bolts can hold down a piece of 4" / 2" and

then fix the tank to that. There are plenty of patterns on how to do it but main thing is something must be bolted to the floor to give the strength.

 
Ok but do I drill through the box sections (A) or through the floor (B) on my pic above? Thanks


 As long as you use strong bolts and heavy washer and nut both would secure it. Obviously the box section would be more secure but you are hardly going to be racing around in it. You could also fit wooden jams at sides to make it more secure.  

 
If you drilled through the box sections of the chassis. You'd only be able to have 4 bolts. (See pic) would that be strong enough?

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Obviously the frame would be more complete- those two lengths of angle iron are the ones getting bolted down though.

 
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Thanks that's really helpful. I've got some 4" wide 1/4" thick steel lengths I can use as spreader plates. I'll do those along the edge and bolts through the chassis. Thanks


If you have a dedicated MOT inspector that you use each year then ask him what he feels about drilling through the chassis. Its up to each tester to use their discretion when it comes to passing or failing a van. He has to ask himself if this will interfere with the integrity of the van or not. He would fail the van if I drill holes in my chassis where others wouldn't. I asked the question and he told me this. Several other cleaners have bolted through their chassis and their MOT inspectors have passed the vans.

If I drilled a hole in my towbar he would fail the van, but he would have no problem if I welded a bracket onto it.

You also need to use High Tensile bolts and nuts. TBH I feel that it would be better for the threads to be inside the van as they will be less likely to corrode so will be better to unscrew at a later date if you need to.

 
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