I am going to beat this dead horse again - I just have to get a definitive answer. Phaser Bolt Torque?

[EdGs]

Number one failure of the GM/Ford ECM's or PCM's or whatever you want to call it, is either the mosfet transistor drivers or filter capacitors. I'd hazard a guess that Chryslers suffer similar problems.
My go to guy for ECM's here in Houston doesn't even want the core on the 2000-2012 GM ECM's He has hundreds of them!

That's sad. There was a bad run of capacitors that got put in alot of items in the early 2000's.

The way I understand it, it involved some industrial espionage where the formula for the electrolytic solution was stolen. Problem was the formula wasn't complete, and instead caused many failures.

I fixed many temperature controllers, computer monitors, even some motherboards due to faulty electrolytic caps.

Mosfets are sometimes easy to change as well. Alot of times the circuit boards are coated for moisture protection, and that makes it alot more difficult to repair and usually not worth the effort.

 

[Sherman Bird]

That's sad. There was a bad run of capacitors that got put in alot of items in the early 2000's.

The way I understand it, it involved some industrial espionage where the formula for the electrolytic solution was stolen. Problem was the formula wasn't complete, and instead caused many failures.

I fixed many temperature controllers, computer monitors, even some motherboards due to faulty electrolytic caps.

Mosfets are sometimes easy to change as well. Alot of times the circuit boards are coated for moisture protection, and that makes it alot more difficult to repair and usually not worth the effort.

Well, I say, make cars like they used to! Bring back Hee-Haw!

 

[prostock]

Tighten it, and go about your business. Geez.

 

[Jigs-n-Fixtures]

OK Guys, I have read, and read and read and watched MMX videos, and others and there is no general consensus on the torque spec for the phaser bolt on the 5.7 Hemi.

So I got a copy of the 2013 - 2018 official MOPAR Service Manual (ALL 14,000 off pages of it!)

Page 11437 is a Table of Torque Specs for the 5.7. It specifies 63 Ft Lbs.
View attachment 552946

Next - on Page 11521 it Specifies 90 ft. lbs.
View attachment 552947

And Finally - on page 11637, (which in step 3 above it tells you to go to the Chain and Sprockets section), it specifies 72 ft. lbs. (which is what I set mine to using the original bolt). And there is a LOT of controversy over using the original bolt! Some say you can, some say you can't.

So even in the official MOPAR manual there are three distinct values specified. So which is it? I really do not want to pull mine apart again and replace the bolt but I will if I have to.

P.S. I still don't have the truck back from the shop working on that dammed Anti-Theft No Crank BS!

I’d look online for a chart which lists the torque specs for various bolt sizes, grades and thread types, and use that. That will nearly always work. The exceptions I know of are things like the torque to yield head bolts, whre you are in fact supposed to torque them past the normal torque levels for the bolt grade and thread.

The factory manual for my tiny truck, has a section in the front, which includes a table, where the general torques for every size, thread type and grade of fastener the factory installs. There are a couple of exceptions highlighted in the manual, but they do a very good job of pointing them out.

RE the original bolt and reuse: Unless it has been torqued to yeild, then it should be good to reuse. That said, your there a new bolt is pretty inexpensive, and doesn’t take any extra effort other than making sure you have the new one. To not replace it is kind of like not servicing the throw out and spigot bearing when you work on the clutch.

 

[Sherman Bird]

I never knew that phasers had bolts. Captain Kirk, Spock, Scotty, et. al. never said a word about phaser bolts. They just said to either set the phaser to either stun, or kill!

 

[crackerjack1957]

72 ft lbs

https://briantooleyracing.com/mwdownloads/download/link/id/614

 

[dchapma1957]

72 ft lbs

https://briantooleyracing.com/mwdownloads/download/link/id/614

Thanks. I'm good as that is what I torqued to. Drove it ~ 25 miles today with no issues.

 

[mrack]

Good’n tight. Or technically speaking, 2.5 ugga duggas

 

[Wild one]

72 ft lbs

https://briantooleyracing.com/mwdownloads/download/link/id/614

Right out of the Haynes manual 90 lb-ft.
It's a M12x 1.75 thread pitch,and if you google M12 X 1.75 bolt torque it ranges from 87.75 to 97.50 lb-ft depending on coating.

https://www.imperialsupplies.com/pdf/A_FastenerTorqueCharts.pdf

 

[Wild one]

I dug up my new cam bolt i just happen to have laying around and it's marked 10.9 on the head,so it has a torque rating of 88 lb-ft using this chart for a M12X1.75 bolt,so i'd say 90 is probably closer to being right then 72 is..

https://www.industrialmetalsupply.com/documents/Metric%20-Tap-and-Drill-Chart.pdf.pdf

 

[crackerjack1957]

Well this says 90 also........so 90 ft lbs it is

https://797performance.com/blogs/fa...kT4qryCSqILjb6-kXO8ikblc59IfWmu1QZCs_zwpVc6Re

 

[GTyankee]

Different Bolts are manufactured to different specs

I buy my Grade 8 Bolts at a supplier called ABABA Bolt
When i or anyone walks in the store, you can tell the salesman, that you want a set of Head Bolts for 2009 HEMI Engine.
When they bring the Box back out, you are almost given the actual specs on stresses & what thread locker to use & how to apply it.

Back in 2010, my Dodge dealership could not get anywhere near enough HEMI Exhaust Manifold Bolts from MOPAR, so they bought the correct bolts from ABABA in Bulk

...................................................
Personally,
i would not trust a current Haynes or Chilton manual that you can find in any Auto Parts Store, the ones that are about 1" thick don't have most of the DETAILS in them, when compared to their older manuals.
That book is suppose to cover, what the OEM Manuals have in them, most OEM Shop Manuals are 5 each, almost 1 3/4" thick books.

Chrysler/Dodge/Jeep/Ram has not published a written repair manual since 2008 or before that,

That is when the OEM manuals started being pressed on CDs
Mostly to save on paper & printing

 

[Wild one]

Different Bolts are manufactured to different specs

I buy my Grade 8 Bolts at a supplier called ABABA Bolt
When i or anyone walks in the store, you can tell the salesman, that you want a set of Head Bolts for 2009 HEMI Engine.
When they bring the Box back out, you are almost given the actual specs on stresses & what thread locker to use & how to apply it.

Back in 2010, my Dodge dealership could not get anywhere near enough HEMI Exhaust Manifold Bolts from MOPAR, so they bought the correct bolts from ABABA in Bulk

...................................................
Personally,
i would not trust a current Haynes or Chilton manual that you can find in any Auto Parts Store, the ones that are about 1" thick don't have most of the DETAILS in them, when compared to their older manuals.
That book is suppose to cover, what the OEM Manuals have in them, most OEM Shop Manuals are 5 each, almost 1 3/4" thick books.

Chrysler/Dodge/Jeep/Ram has not published a written repair manual since 2008 or before that,

That is when the OEM manuals started being pressed on CDs
Mostly to save on paper & printing

View attachment 553710


View attachment 553712

You're the one who posted the torque specs from the service manual a few years back,and even it stated 90 lb-ft.
A 10.9 metric bolt is a 10.9 bolt from pretty well every bolt manufacture,and most torque specs on a 10.9 X M12 X 1.75 bolt are from roughly 88 lb-ft to a little over 97 lb-ft depending on coating