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Bilstien Boot Up or Down??

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Old Jan 26, 2007 | 01:07 PM
  #1  
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Bilstien Boot Up or Down??

Ok, now I'm sure this topic has come up before, but my search didn't give me the info I need.

I'm installing my new Bilstien HD rear shocks on my 07 F150 tomorrow and want to know which is the right way to put the shock. The guys at shockwarehouse say either way is fine but boot up is prefered.

What do you guys think?

Thanks in advance
 
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Old Jan 26, 2007 | 02:32 PM
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Boot goes up...either way is not fine because the shock is filled with fluid and if it's upside down it will leak and not respond as it is supposed to because the fluid is going downwards
 
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Old Jan 26, 2007 | 03:13 PM
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Thanks for the reply. I decided to call Bilstein and find out for sure. These are supposed to be installed boot down.

Looks like the folks at shockwarehouse.com don't have the right info. But they do offer a better price then anyone on ebay did.
 
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Old Jan 26, 2007 | 03:34 PM
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Bilstein must have a different design to keep the gas in cause I had a set in here the other day that a local brake place did (rancho's) and the customer had to replace them because they were leaking after a week.
 
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Old Jan 26, 2007 | 03:46 PM
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If it's cellular gas it can go either way and if it's charged gas the boot goes up
 
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Old Jan 26, 2007 | 07:28 PM
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The valving would not be correct either, put them on however Bilstein recommends for sure. Remember to give them a while to break in, they'll loosen up a little (inside the shock, not the mounting hardware ). Be sure to let us know how you like them!
 
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Old Jan 27, 2007 | 05:39 AM
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It would be real nice and good common sense if Bilstein would say how their shocks should be mounted. Either on he box or instructions????????
 
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Old Jan 27, 2007 | 08:56 AM
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Yes it would and when I spoke to their engineer, I told him that. But doubt anything will get done... Oh well.

Off to install in my friends heated shop!!!! It would really suck to do this outside today. 8 degree's and snowing right now here in my part of NH.

Will post my thoughts about these new shocks.
 
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Old Jan 27, 2007 | 09:01 AM
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Most shocks have different fittings on each end so there's no question of how it goes on. There are shocks that are meant to be boot down. I don't like them and have had some failures with this type (Edelbrock Performer), but they are out there. On applications where both ends have the same fittings, you must go by manufacturer's instructions. 'Inverted' (boot-down) shocks will usually have warnings about the special installation.
 
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Old Jan 27, 2007 | 09:31 PM
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No special instructions or anything with these Bilsteins.

Will say the new shocks surely improve the ride on my truck. One thing I was very surprised by was the size difference of the strut shaft. The OEM shocks have say a 3/4" shaft while the Bilsteins were only 1/2". But the pressure in the OEM is almost non existent.

Time will tell how well these perform, but I would expect they will hold up well....
 
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