3 Gen Stainless SRT Exhaust Stud/Bolt PNs?

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3 Gen Stainless SRT Exhaust Stud/Bolt PNs?

Post by coder » Mon Nov 11, 2019 9:47 pm

After 3 year and 40k miles I need to replace the exhaust manifold studs/bolts on my trucks rebuilt engine. I have heard that you can use stainless steel SRT bolts. Are there any negatives in doing this, does anyone have the part numbers? Any and all input is welcome.
Vehicle: 2007 Power Wagon Quad Cab - Factory Options (Inferno Red, Premium Cloth Bench Seat, Light Group, Automatic Transmission, Leather Steering Wheel)
Suspension: Carli 3" Hemi Coils, Carli Control Arms, Carli King 2.5 Pin-Tops, Carli Stainless Steering Stabilizer, Carli Trackbar | Synergy 1" Rear Shackle
Performance: Magnaflow Muffler | Magnaflow Y-Pipe
Wheels/Tires: Yokohama X-A/T 35x12.5x17
Steering/Drivetrain/Axles: Carli Front Diff Guard | Dynatrac Ball Joints | Mopar HD Steering Gear
Miscellaneous: Line-X Bedliner | Locker Bypass Switch | Mopar Rock Rails | Odyssey Extreme 65-PC1750T | Performance Friction Brake Pads | Weathertech Digital Fit Mats | Winch Thermal Protection Bypass

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Re: 3 Gen Stainless SRT Exhaust Stud/Bolt PNs?

Post by Retired BLM Rig » Tue Nov 12, 2019 9:19 am

If the SS fasteners break in the future, they will be much more difficult to drill and extract.
Ford used SS on the 460 engine for trucks and motorhomes in the 90s. They still broke and took 3X as long to fix.

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Re: 3 Gen Stainless SRT Exhaust Stud/Bolt PNs?

Post by Bill2014 » Tue Nov 12, 2019 11:17 am

Stainless Steel threads are highly prone to galling and then seizing under heat and pressure... :doh:
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Re: 3 Gen Stainless SRT Exhaust Stud/Bolt PNs?

Post by DamageWagon » Tue Nov 12, 2019 2:57 pm

Good stainless fasteners are used exactly for applications like that. Some hi temp anti seize on the threads and seizing won’t be nearly as much of an issue.

As to which fasteners are ideal for the application I have no idea. I’d venture to say that if you wanted the best setup you might do what Cummins has done forever and use a long bolt and a sleeve to clamp the manifold to the block. A longer bolt has more length to handle elongation and creep.

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Re: 3 Gen Stainless SRT Exhaust Stud/Bolt PNs?

Post by Colibri » Fri Nov 22, 2019 11:03 pm

Check out stage8 locking hardware for the hemi exhaust manifolds. More work to install, but you’ll only have to do it once
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Re: 3 Gen Stainless SRT Exhaust Stud/Bolt PNs?

Post by coder » Tue Nov 26, 2019 7:58 pm

I ended up replacement everything with new OEM parts including studs/bolts, gaskets and heat-shields. I had one broken stud that needed to be extracted the nuts holding the heat-shields on were rusted solid so they had to be cut off. I could not get the right side header out of the wheel well so I drilled, cleaned, and replaced everything as I moved it around.

It was a heck of a job 2.5 days of contorting myself into tight spaces luckily I had a good 1/4" socket and ratchet set with extensions and a 1/4" torque wrench so everything could be torqued to spec the new exhaust manifold hardware is installed and the truck runs and sounds great!
Vehicle: 2007 Power Wagon Quad Cab - Factory Options (Inferno Red, Premium Cloth Bench Seat, Light Group, Automatic Transmission, Leather Steering Wheel)
Suspension: Carli 3" Hemi Coils, Carli Control Arms, Carli King 2.5 Pin-Tops, Carli Stainless Steering Stabilizer, Carli Trackbar | Synergy 1" Rear Shackle
Performance: Magnaflow Muffler | Magnaflow Y-Pipe
Wheels/Tires: Yokohama X-A/T 35x12.5x17
Steering/Drivetrain/Axles: Carli Front Diff Guard | Dynatrac Ball Joints | Mopar HD Steering Gear
Miscellaneous: Line-X Bedliner | Locker Bypass Switch | Mopar Rock Rails | Odyssey Extreme 65-PC1750T | Performance Friction Brake Pads | Weathertech Digital Fit Mats | Winch Thermal Protection Bypass

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Re: 3 Gen Stainless SRT Exhaust Stud/Bolt PNs?

Post by RustyPW » Tue Nov 26, 2019 8:22 pm

:rockon:

I had the dealership replace my exhaust manifold studs under the life time drivetrain warranty last summer. I was changing front brake pads 2 weeks ago, and seen a hairline crack in the right side manifold. Debating about using the warranty to replace the manifold or get a set of long tube headers.
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Re: 3 Gen Stainless SRT Exhaust Stud/Bolt PNs?

Post by Bill2014 » Wed Nov 27, 2019 8:29 am

:rockon: coder :rockon:
I hope you get many years before you hear tick-tick-tick-tick-tick again :D
2014 Power Wagon Laramie
Titan V5 2.5" Receiver Pintle Hook
Warn wireless winch controller
.188" DOM White Knuckle Rock Sliders
Locker Bypass & Nanny Kill Switch

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Re: 3 Gen Stainless SRT Exhaust Stud/Bolt PNs?

Post by coder » Wed Nov 27, 2019 11:46 am

Bill2014 wrote:
Wed Nov 27, 2019 8:29 am
:rockon: coder :rockon:
I hope you get many years before you hear tick-tick-tick-tick-tick again :D
Thanks I hope so too.

The funny thing is didn't really hear the tick-tick-tick of a leak I only noticed that my right side exhaust heat-shield was rattling around after further inspection I found that the top, rear-most stud was busted.

When I got it apart the #8 cylinder exhaust port had some black soot around it so there was a leak and the engine was noticeably quieter once everything was put back together.
Vehicle: 2007 Power Wagon Quad Cab - Factory Options (Inferno Red, Premium Cloth Bench Seat, Light Group, Automatic Transmission, Leather Steering Wheel)
Suspension: Carli 3" Hemi Coils, Carli Control Arms, Carli King 2.5 Pin-Tops, Carli Stainless Steering Stabilizer, Carli Trackbar | Synergy 1" Rear Shackle
Performance: Magnaflow Muffler | Magnaflow Y-Pipe
Wheels/Tires: Yokohama X-A/T 35x12.5x17
Steering/Drivetrain/Axles: Carli Front Diff Guard | Dynatrac Ball Joints | Mopar HD Steering Gear
Miscellaneous: Line-X Bedliner | Locker Bypass Switch | Mopar Rock Rails | Odyssey Extreme 65-PC1750T | Performance Friction Brake Pads | Weathertech Digital Fit Mats | Winch Thermal Protection Bypass

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