Tips to install new exhaust manifolds and up pipes

[firechaser1141]

Hello all I'm about to start swapping out my exhaust manifolds and up pipes. My factory up pipe blew a baffel so I'm going ahead and changing it all out. Dose anyone have a list of bolt sizes and or and special tools that may make the job a bit easier, I know the up pipe bolts are 12pt 12mm but that's it.


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[c5fourj]

Longest flex head wratchet wrench you can get a hold of!

 

[WolfLMM]

And a cheater pipe!

 

[TheBac]

a good, compact breaker bar thru passenger side wheel well works well.

 

[OregonDMAX]

Presoak every single bolt with pb blaster the night before, you will thank me.
And use antiseize on the new bolts going back together Incase you ever have to remove them.

 

[firechaser1141]

I've got a really long snap on 1/2 flex head ratchet I was thinking about trying. What size are the manifold bolts and nuts?


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[rg3whitelbz]

IIRC I did drivers and passenger side turbo uppipe bolts from passenger fender well and drivers manifold uppipe bolts from under the truck with a 12mm 12pt impact swivel. Manifold bolts were 6 point 13 or 14mm but they were no big deal.

 

[830king]

Hello all I'm about to start swapping out my exhaust manifolds and up pipes. My factory up pipe blew a baffel so I'm going ahead and changing it all out. Dose anyone have a list of bolt sizes and or and special tools that may make the job a bit easier, I know the up pipe bolts are 12pt 12mm but that's it.


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You going with stock replacements or upgrading?

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[firechaser1141]

You going with stock replacements or upgrading?

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I think I'm gonna go with profab manifolds and up pipes


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[OregonDMAX]

Just finished a set on an lml, fit amazing, look good, well worth the $

Remove uppipe and downpipe heat shields before removed the pipes makes it 1000 times easier.

 

[firechaser1141]

So what's everyone's opinion on getting the bolts looses spraying them with a good penetrating oil (wd40) and letting them soak overnight or running the truck up to operating temp and trying to remove them then


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[WVRigrat05]

I had mine hot and never soaked them. But my stuffs always been broke at low miles so never any issues.

 

[TheBac]

FYI: WD40 is not a "penetrating oil" in the sense that needed here. PBBlaster or something similar is what you need to use.

 

[firechaser1141]

FYI: WD40 is not a "penetrating oil" in the sense that needed here. PBBlaster or something similar is what you need to use.

The wd40 I have is the penetrating oil with the blue torch technology stuff I've also got liquid wrench I may try not sure yet


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[c20elephant]

So what's everyone's opinion on getting the bolts looses spraying them with a good penetrating oil (wd40) and letting them soak overnight or running the truck up to operating temp and trying to remove them then


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Have not used anything else since I tried this concoction.

50/50 mix of acetone and transmission fluid

 

[Dart.340]

A little tip for the manifolds is to weld the nut to the long studs. That way one you loosen it off it will already be out of the head and make manifold removal easier then having to slide it 2-3 inches away from the head

 

[BlkMax]

Every time I have done up-pipe bolts I have resorted to using a porta-power jack from the floor to the end of the breaker bar. It's not pretty, but I keeps me from being so out of position when trying to break the bolts from the up-pipe to the turbo loose.