14MM Subframe Bolts Question...?

ABrown

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Got these from a buddy of mine. Which hole do they go in? There are 3 bolts that I can see holding in the subframe. Once I figure out where they go how do I put them in. IE how do I get a wrench on the nut so I can tighten them down? I'm at a loss right now. I thought this would be simple...
 

romi

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There are actually 4 bolts that hold in the subframe (2 on each side) located in the wheel well. The nut has a tab on it to keep it form spinning. I'm not sure where you are finding the 3rd bolt at? Just support the irs with a jack and back the bolt out and install the new one. You might have to adjust the jack up or down so the new bolt doesn't bind
 

ABrown

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I have the low profile bolt in the front hole, so the 14mm replaces the bolt behind that one? Why does MM sell nuts if there is a backing nut?
 

JB

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This should help you figure it out.....the left side of diagram is the front of the subframe and the front bolts are the ones you need to replace (HB3 & HN2)

As you can see, the same bolt (HB3) is actually specified for both front and rear locations

for those who need them:
Ford part# for 14mm bolt is W704939-S426 & nut is W520215-S427
They come in packs of 6 and some dealers won't separate (call Tousley.....FORDSVTPARTS )




irspartsdiagram2jm0.jpg
 
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JB

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Your second post says you have low-profiles in front..........That's wrong

They're intended for the rear where tire sidewall clearance can be an issue

The problem with those low-profile, buttonhead bolts is that it's impossible to torque them to spec
(76 lb-ft) with such a small hex


I suggest using regular bolts and grinding the head down (for the rear only)

Proper service procedure dictates replacing them every time they're removed, which I why I just go ahead and buy them by the 6-pack ($24)

.
 
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ABrown

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Ok so the 14mm bolts go through the subframe bushings? Which are the bushings right behind the shocks, correct? Then the button head low pro bolt goes in the hole behind those which has the hole drilled out and is deep down in the bracket, or in the one behind that?
 

JB

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Ok so the 14mm bolts go through the subframe bushings? Which are the bushings right behind the shocks, correct? Then the button head low pro bolt goes in the hole behind those which has the hole drilled out and is deep down in the bracket, or in the one behind that?

Didn't your parents teach you any manners? Doesn't anyone say THANKS anymore?

I don't know why, but I'll upload 1 more pic to make it more clear...
FRONT 14MM BOLT LOCATIONS ARE MARKED..........DON'T PUT LOW-PROFILES THERE

Don't come back until you've actually gotten under the car and looked at it :poke:

cobrairstx1.jpg
 
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JB

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you were right about the bolts going through the subframe bushings
 

ABrown

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Sorry guys. I was out of it today. The last picture def. helped. I was looking in the wrong places. Thanks for the pics!
 

JB

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HEHEHE.......you're welcome, man

I just like to give people shit :pepper:
 
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que4dog

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Yeah, actually I will use the 9/16. 76 ft/lbs? I thought it was somewhere around 136 or so. I know the one in the wheel well 12mm is 76 ft/lbs.
 

ac427cobra

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Subframe-to-rear bracket bolts 76 lb-ft
Subframe rear bracket-to-body bolts 59 lb-ft
Subframe-to-body bolts 12mm bolts 76 lb-ft
Subframe-to-body bolts for replacement Grade 8 9/16" bolts 145 lb-ft
Subframe-to-body bolts for Ford 14mm replacement bolts 131 lb-ft
Driveshaft to pinion flange 83 lb-ft
Halfshaft nuts (to rear hub) 240-250 ft. lbs
Lower control arm and bushing-to-subframe bolts 184 lb-ft
Lower control arm-to-knuckle nut 85 lb-ft
Upper control arm and bushing-to-subframe nuts 66 lb-ft
Upper control arm bushing-to-knuckle nut 66 lb-ft
Rear axle diff rear insulator-to-axle housing bolts 76 lb-ft

From our installation page:

Installation


:thumbsup::coolman::beer:
 

03 DSG Snake

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Subframe-to-rear bracket bolts 76 lb-ft
Subframe rear bracket-to-body bolts 59 lb-ft
Subframe-to-body bolts 12mm bolts 76 lb-ft
Subframe-to-body bolts for replacement Grade 8 9/16" bolts 145 lb-ft
Subframe-to-body bolts for Ford 14mm replacement bolts 131 lb-ft
Driveshaft to pinion flange 83 lb-ft
Halfshaft nuts (to rear hub) 240-250 ft. lbs
Lower control arm and bushing-to-subframe bolts 184 lb-ft
Lower control arm-to-knuckle nut 85 lb-ft
Upper control arm and bushing-to-subframe nuts 66 lb-ft
Upper control arm bushing-to-knuckle nut 66 lb-ft
Rear axle diff rear insulator-to-axle housing bolts 76 lb-ft

From our installation page:

Installation


:thumbsup::coolman::beer:

You're a beautiful man :beer:
 

03SonicStang

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Sorry to hyjack but; the Rear SubFrame Bolts (when I'm droping the IRS for Springs, issues :cuss:) are the Subframe rear bracket-to-body bolts 59 lb-ft Correct??

Thanks
 
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