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Author Topic: to isolate or hardmount  (Read 862 times)

Offline SPYDER

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to isolate or hardmount
« on: January 09, 2015, 01:20:49 PM »
I ordered a new fuel cell for the buggy and im also while im at it fixing the one in the 05.  but I was wondering if I really need to isolate it or if I can hard mount it.  when I did the one in the 05 I used swaybar bushings under the cell to isolate it but it adds about 3/4" to the overall height.  the one in the buggy is hard mounted.  when I redo the 05 I was going to try to sink it into the floor as well and am trying to keep it low to regain some cargo space.  the buggy I have some major limiting factors on space so trying to keep the overall packaging size down as well. 

thoughts/opinion??
05 Tj d44's, 4.88s, ARB's, 37's and some bling
99 TJuggy d60,5.13s, ARB/Spool, 40's, backhalfed
06.5 GMC 2500
05 WK 2" w/32's

Offline Ian

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Re: to isolate or hardmount
« Reply #1 on: January 09, 2015, 01:52:36 PM »
using bushings at the taps can lead to problems.  if you drop hard you could break off the tabs on your tank and
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60 w/ minor bling 4.56, 14b ff rear w/detriot 4.56, atlas 2speed 5.0 4 custom link rear and 3link front, 110" wheelbase, pcs full hydro, fox 2.5's,  and 42" Irok stikies... and no clue

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Offline SPYDER

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Re: to isolate or hardmount
« Reply #2 on: January 09, 2015, 02:22:20 PM »
both cells are/will be mounted with artec mounts
05 Tj d44's, 4.88s, ARB's, 37's and some bling
99 TJuggy d60,5.13s, ARB/Spool, 40's, backhalfed
06.5 GMC 2500
05 WK 2" w/32's

Offline Ian

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Re: to isolate or hardmount
« Reply #3 on: January 09, 2015, 02:50:52 PM »
i would just hard mount them then.  i used a tiny bit of weather stripping between the bracket i made (steel) and my fuel cell (aluminum).
i am an AMSOIL dealer! pm me for a quote

60 w/ minor bling 4.56, 14b ff rear w/detriot 4.56, atlas 2speed 5.0 4 custom link rear and 3link front, 110" wheelbase, pcs full hydro, fox 2.5's,  and 42" Irok stikies... and no clue

'00 tj (see above)

Offline Twisty

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Re: to isolate or hardmount
« Reply #4 on: January 09, 2015, 03:16:55 PM »
I would hard mount it.  I see no reason to put it on bushings if it's in a cradle.

I mounted mine using two pieces of angle iron to keep the cell from shifting side to side and some straps from RCI to keep it from going fore and aft.  Still working great.



« Last Edit: January 09, 2015, 03:17:23 PM by Twisty »
88 MJ buggy, 4.0/AW4, 203/205, 3 link front/4 link rear on airshocks, 42" Iroks, full hydro

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Offline jps4jeep

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Re: to isolate or hardmount
« Reply #5 on: January 09, 2015, 03:21:53 PM »
using bushings at the taps can lead to problems.  if you drop hard you could break off the tabs on your tank and

There are some inaccuracies here, regardless of bushings or not, you should not mount the cell only using those tabs.

I made a mount for mine then used bushings like you did simply because I was afraid of unwanted noises and or vibrations, but definately not needed.
Dad always said "If it has boobs or spark plugs it will be fun AND will cause you problems."

Offline Twisty

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Re: to isolate or hardmount
« Reply #6 on: January 09, 2015, 05:53:25 PM »
You're slamming into rocks and trees at redline with people yelling "GO GO GO" or "STOP STOP STOP."

What kind of noises/vibrations are you concerned about?

EDIT:  The only noise source would be from the pump.  My Walbro pump came with a foam sleeve to go in.  Other than the faint pump buzz, you would never know its there.  Also, factory tanks are not isolated from the body/frame.
« Last Edit: January 09, 2015, 05:55:45 PM by Twisty »
88 MJ buggy, 4.0/AW4, 203/205, 3 link front/4 link rear on airshocks, 42" Iroks, full hydro

"Only wealthy men can afford to buy cheap things."

Offline SPYDER

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Re: to isolate or hardmount
« Reply #7 on: January 09, 2015, 06:42:08 PM »
Never thought about that....factory tank that is.

This simplifies the install as well.  Now I can just weld the bottom plates to the cross bars on the rear of my frame.  Instead of having to add the plates for the bushings to bolt up too
05 Tj d44's, 4.88s, ARB's, 37's and some bling
99 TJuggy d60,5.13s, ARB/Spool, 40's, backhalfed
06.5 GMC 2500
05 WK 2" w/32's

Offline jps4jeep

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Re: to isolate or hardmount
« Reply #8 on: January 10, 2015, 11:21:26 AM »
Correct, basically from the pump. Yes the factory tank was hard mounted, but it was also plastic. Didn't say I was way was right, in fact I basically said it was pointless, it was just based on my thinking at that time
Dad always said "If it has boobs or spark plugs it will be fun AND will cause you problems."

Offline jeepgod

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Re: to isolate or hardmount
« Reply #9 on: January 10, 2015, 12:53:41 PM »
Every real jeep (i.e. Made before 1987) had hard mounted steel tanks. Just some rubber stripes was added in the 80s to reduce noise. So I don't think isolating the tank with rubber bushings is needed


I will say from first hand experience that using the"tabs" on an aftermarket fuel cells to mount the tank will lead to cracks in the tank. You do need full full wrap around straps or a cradle of some sort though.

Good luck
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Offline SPYDER

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Re: to isolate or hardmount
« Reply #10 on: January 10, 2015, 06:06:30 PM »
They will be fully cradled and I'll put a thin layer of rubber under the cells.
05 Tj d44's, 4.88s, ARB's, 37's and some bling
99 TJuggy d60,5.13s, ARB/Spool, 40's, backhalfed
06.5 GMC 2500
05 WK 2" w/32's


 



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