23gal VS 18gal Fuel tank

[KatahGii]

I have a 1986 Jeep Comanche X I don’t know the bed length. I need to replace the gas tank and I ordered the only one autozone had and it’s the 23gal. If mine came with the 18 gal will this 23gal fit?

 

edit: fuel tank size

[Pete M]

32?  do you mean 23?

[KatahGii]

4 minutes ago, Pete M said:

32?  do you mean 23?

Yes sorry I mistyped I’m at work :)

[Pete M]

If I remember right, the 23 goes in, but will have an extra strap involved.  but I haven't done it myself, so wait for confirmation from someone else before pulling the trigger.  

[KatahGii]

17 minutes ago, Pete M said:

If I remember right, the 23 goes in, but will have an extra strap involved.  but I haven't done it myself, so wait for confirmation from someone else before pulling the trigger.  

I already bought the tank when I got it in the mail was when I questioned myself. The tank in the Jeep had 3 straps already

[fiatslug87]

'86 were only long bed, so the 23 gallon will fit, if you have a 16 g tank the sender will be different.

 

[Eagle]

1986 only had the longbed, so the 23-gallon tank is correct. The 18-gallon tank is for the shortbed, which didn't come until the 1987 model year.

 

[fiatslug87]

Interesting the parts manual also lists a 16 gallon for the '86 MJ.

[Pete M]

the 23 and 16 are longbed.  18 is shortbed.   

[krustyballer16]

the 23 and 16 are longbed.  18 is shortbed.   

Correct. My 86 had a 16 for the 2.5.
Wasnt the 23 more ccommon in the 2.8?

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[Eagle]

The 16-gallon tank for the longbeds is the same, 3-strap tank as the 23-gallon tank. It has internal baffles to stop filling at 16-gallons. It was used on the base models with small tires to keep the gross vehicle weight down. AMC did the same thing with the Cherokee.

 

 

[KatahGii]

17 minutes ago, krustyballer16 said:

Correct. My 86 had a 16 for the 2.5.
Wasnt the 23 more ccommon in the 2.8?

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How many straps did yours have mine has 3 I’m just trying to make sure I got the right tank

[Eagle]

2 minutes ago, KatahGii said:

How many straps did yours have mine has 3 I’m just trying to make sure I got the right tank

 

You have the correct tank. Notice in the parts diagram above, both the 16- and 23-gallon tank take (2) #9 straps and (1) #11 rear strap.

[KatahGii]

1 minute ago, Eagle said:

 

You have the correct tank. Notice in the parts diagram above, both the 16- and 23-gallon tank take (2) #9 straps and (1) #11 rear strap.

Alright thanks. I was just trying to make sure because The old one is crumbling from rust so I was going to rhino line the outside of this new one before putting it in

[krustyballer16]

How many straps did yours have mine has 3 I’m just trying to make sure I got the right tank

3

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[KatahGii]

On 11/14/2019 at 8:37 PM, Eagle said:

 

You have the correct tank. Notice in the parts diagram above, both the 16- and 23-gallon tank take (2) #9 straps and (1) #11 rear strap.

What are the lengths of the #9 and #11 straps. I bought the straps from autozone and I got a 29.5” and a 32.5” strap (idk why autozone only sells sets of 2 but I tried putting them on since I got the tank out and the new one. But I couldn’t get either to fit in the back same size tank but the straps were both too short.

[Eagle]

9 hours ago, KatahGii said:

What are the lengths of the #9 and #11 straps. I bought the straps from autozone and I got a 29.5” and a 32.5” strap (idk why autozone only sells sets of 2 but I tried putting them on since I got the tank out and the new one. But I couldn’t get either to fit in the back same size tank but the straps were both too short.

 

I can't help there. All my MJs are shortbeds, with two straps.

 

Maybe you need longer J-bolts?