Torque Specs

[Joeslow13]

Help! I’m doing a clutch job and I’m trying to figure out the factory torque specs and I can’t find them anywhere. I need the
Flywheel Torque:
Pressure Plate:
TOB:
Transmission to Engine Housing:
Driveshaft Both ends:

 

[SVT Rider]

Help! I’m doing a clutch job and I’m trying to figure out the factory torque specs and I can’t find them anywhere. I need the
Flywheel Torque:
Pressure Plate:
TOB:
Transmission to Engine Housing:
Driveshaft Both ends:

For the 4.6L 3V with the TR3650 Transmission:

Flywheel Torque:
59 lb-ft in a star pattern (6-bolt)

Pressure Plate:
NOTE: Always install new pressure plate bolts.
Using a suitable clutch aligner, position the
clutch disc on the flywheel, then install the
pressure plate and new pressure plate bolts.
• Tighten the pressure plate bolts in 2 stages
in a star pattern.
X Stage 1: Tighten to 45 Nm (33 lb-ft).
X Stage 2: Tighten an additional 60 degrees.
• Remove the clutch aligner.

Slave Cylinder (ToB)
15 lb-ft (2-bolts)

Transmission to Engine Housing:
33 lb-ft (8-bolts)

Driveshaft Both ends:
Front 4 bolts: 76 lb-ft
Rear 6 CV joint bolts: 41 lb-ft

 

[JC SSP]

You can’t go wrong with a cross-cross pattern… just like doing your lug nuts.

This is for a F150 auto flexplate but sequence should be the same.

More importantly, did you replace the pilot bearing, clean all mounting surfaces, lock tight the bolts, and inspect the bolts for stretching…

 

[Joeslow13]

Thank you for all the information! And yes I installed new pilot bearing and I bought all new oem bolts for everything.

 

[brasil]

@ SVT Rider... new bolts for the pressure plate ? Why ? are these bolts "oneway items " ?

 

[StockishS197]

@ SVT Rider... new bolts for the pressure plate ? Why ? are these bolts "oneway items " ?

The flywheel bolts are TTY, so single use only item.

 

[brasil]

TTY ? What does it mean ? Never heard about it ... is the material of the screws something special..or is it because of the tread locking function ( the bluish stuff )??

 

[GriffX]

TTY ? What does it mean ? Never heard about it ... is the material of the screws something special..or is it because of the tread locking function ( the bluish stuff )??

There are a few bolts on a car torqued into the plasticity of the steel, like head bolts. They usually have a base torque spec, like 90 Nm and in addition turn 90 degree plus. So the bolt is stretched and the clamping force of a stretched bolt is more precise than torqued only. (not all bolts with 90+90° are TTY bolts and can be re-used)
But, in a shop manual, when they say "use new bolts", the reason is most that the new bolt comes with glue on it (blue, red, yellow) and the technician should not use glue. Or, the old bolts will rust and it is not a good idea to use it again, takes too much time to clean and so on. The bolts of the drive shaft are 12pt 12.9 grade bolts who come pre glued from factory. You can re-use them without any problems at home.

 

[JC SSP]

Even some suspension bolts are one time use… check the shop manual

Unfortunately, many car manufacturers use some type of “torque-to-yield” bolts.

 

[Pentalab]

TTY = " Torque to yield"

 

[Juice]

Even some suspension bolts are one time use… check the shop manual

Unfortunately, many car manufacturers use some type of “torque-to-yield” bolts.

My understanding is suspension bolts are NOT TTY, and can be reused. But, its the damage to the coating on those that is the reason to replace them (suspension).
Ps: I have reused, and will continue to reuse those bolts. I am not recommending for anyone to do what I do/did/will do. lol

 

[JC SSP]

I have reused and bought new bolts on my Mustang's... just depends what components (LCA vs harmonic balancer).

I was actually making a general statement on TTY... My Audi is riddled with these one-time use bolts... better to buy ARP and be done with it!

 

[brasil]

understand . So I need to buy a set of clutch plate screws ( because they need to torqued first..and than an additional 60 degrees ). Found a kit from Ford racing 6 screws 3 pins.. for 33 Euros.. will buy them just in case I need to renew my clutch.

 

[Midlife Crises]

I second the suggestion to use ARP 2,000 fasteners in place of the original TTY bolts where they are available. It is important to remember that ARP fasteners are packaged with there own torque specification and thread lubricant. Do not use Fords TTY method with ARP fasteners. Many of their specific kits and torque specs are listed on the ARP web sight.

 

[brasil]

.... I see - the life of a Mustang owner is a real complicated one ... Back in the old days... screws nuts..even washers lasted forever.

 

[GriffX]

One time use can have many reasons, most of the time they come with glue on it, or it is faster to use new bolts and make money. Prices for bolts via Ford are crazy. And torque+angle doesn't mean it is a stretch TTY bolt automatically.
Nylon lock nuts is a different story, I don't like to reuse them, only with additional glue.

For the clutch, it is so hard to get to, better buy new one.

 

[brasil]

yes..I am with you. The TTY Story is big money maker. Mercedes for example ..they "created" a oil drin plug - made for One time use only. the drain plug costs around 20 Euros !! Rip off...

 

[Juice]

TTY is true, all else IS for $$$$. The thread locker glue even works for one or two reuses.

 

[Pentalab]

TTY is true, all else IS for $$$$. The thread locker glue even works for one or two reuses.

Loctite make red and blue and purple. Red requires 500F heat to get the nut off.

Permatex also makes red and blue.
Permatex also now makes orange. Orange is as strong as red....and 'easy' to get off like blue.
Permatex Orange has basically obsoleted both red and blue.

 

[Midlife Crises]

For my money, there are many fasteners on our Mustangs that can be replaced with a quality replacement. Often the replacement can be used more than once in a traditional fashion. There are also places it is best not to screw around reinventing the wheel so to speak. For example, the hollow, shoulder bolt used to attach the phasers to the 3 valve cams. No reason to use these twice. It was stretched when installed and if it fails the engine is gone.