Cracked blocks

[SVTDanny]

Never said they "should" hold. They are well within their stretch at 225.

Keep talking, your looking smarter every time.

Oh.

250 is plenty. With an arp 2000 @ 250# on a 16mm stud at 4 per cylinder with the thread pitch they have it should be capable off holding

 

[Morgan@Midwest Diesel & Auto]

Oh.

So, I guess that at 275 there is a million dollar guarantee?

Since they are capable at 225, then why torque to 275?

Oh that's right, the directions said so!

So I guess since they say 275 that there is no way they can yield? Right?

Come on, your fighting a losing battle.

They are more than adequate at 225. Show me your engineering study that proves me wrong? Id like to see where your info is coming from? I guess it's just the piece of paper that you got in your one set of studs on the one 6.4 your studded?

 

[forcefed6.4ford]

Fine. Since no one will answer my question.

If the crack is vertical, its a lack of material around the stud hole. If the crack is horizontal, its compressive and a result of over torquing. So based on this and this alone. A lower torque values for the "thin" holes is required. Abundance/over lubing is not the answer since the metal is just not there. Make up torque is.

Despite your liberal use of lube SVT. Once you pass 30-50ftlbs the film remaining on the fasteners is minimal. Thousandths of an inch if not less. Your arguments prove one thing and one thing only. You really dont know sh!t about a 6.4. Go home.

 

[SVTDanny]

Since they are capable at 225, then why torque to 275?

Oh that's right, the directions said so!

Why only torque them to 225?

Oh that's right... The internet told me too! Of course!

Is that really that we're going with?

 

[Morgan@Midwest Diesel & Auto]

Why only torque them to 225?



Oh that's right... The internet told me too! Of course!



Is that really that we're going with?

Way to edit the quote dumba**

Since your so knowledgeable, what stretch does a 6.4 arp 2000 headstud have at 275#? 225#?

Oh that's right you don't know. Just like you have no other factual evidence. Thanks for contributing nothing. No facts, not experience, no credit.

Go home dude, you have nothing other than a bunch of ridiculous excuses as to why your "theories" are right.

When you have real proof, real facts and real experience we will maybe (big maybe) take you with a grain of salt.

 

[Highroller54]

If you were a real imagineer you would hate studs, the forces that are applied to the block does allot more then just crack them. It actually changes the shape of the block, tolerances, alighnment ect. They are not great for longevity of bearings and such. Sooooo if a stud at 225 will do the job and exert less force on the block you are much better off.

 

[Morgan@Midwest Diesel & Auto]

Nah... The directions say 275#. Arp spent 10's of thousands of dollars don't you know?


Peace I'm out

 

[6.4strokin]

Wow dude I guess your not finished are you. These guys have put way more time into this engine then arp will ever. And you don't have a pot to piss in. Let's go back to my question that you avoided earlier in the thread. How many stud jobs have you done on a 6.4? It's really confusing too me that your disrespecting some top notch quality shops on here that do a lot of testing on this engine to put out quality parts. And you sit there and say that you've talked to a person I guess a engineer of some sort said this and that. He's probably never seen a 6.4 block.


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[SVTDanny]

Nah... The directions say 275#. Arp spent 10's of thousands of dollars don't you know?


Peace I'm out

Glad to see your vendor dollars working for you. Looks like the forum blindly supports your hack methods as well. Later.

 

[Ad8 PRODIGY]

Glad to see your vendor dollars working for you. Looks like the forum blindly supports your hack methods as well. Later.

I cant believe i just read this. You sir are quite a douche... lmfao

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[Diesel23]

Not sure when he changed his profile pic but dead on WHAT A DOOSH !

 

[Highroller54]

What makes you call him a hack? What do you not like? Lower then arp spec torque numbers? Lower torque in the two weak holes? Or?

 

[bigrpowr]

Glad to see your vendor dollars working for you. Looks like the forum blindly supports your hack methods as well. Later.

Holy $hit! eddy Munster and mr. Ed had a love child.

 

[swinky]

Nothing to do with making the holes stronger- It's all about using the smaller6.0 studs that don't crack the block when torqued to spec

I was gonna say the same thing lmao. Use some 6.0 pistons too since they don't crack.

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[Jonnydime]

What is the clamping force of the stock headbolts? The only reason I ask is that they seem to have enough clamping force to hold the pressure in but lack the physical strength keep the head from lifting since they are a TTY bolt. Also who has an idea of the actual torque applied when you tighten the factory head bolts on the final 90 degree step?

 

[swinky]

What is the clamping force of the stock headbolts? The only reason I ask is that they seem to have enough clamping force to hold the pressure in but lack the physical strength keep the head from lifting since they are a TTY bolt. Also who has an idea of the actual torque applied when you tighten the factory head bolts on the final 90 degree step?

I don't think you can get an exact torque number on a tty bolt. I'd guess high 100s

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[White_monster]

Sure you can get a torque applied to the bolt to achieve 90* turn. Put a torque wrench on it as you turn the bolt. It may not be 100% accurate but if you did 4-5 you could take the average of them easily.

 

[drunk on diesel]

he's referring to clamping force, not torque applied to the fastener to achieve that clamping force

 

[Jonnydime]

he's referring to clamping force, not torque applied to the fastener to achieve that clamping force

I was asking both.

 

[Jonnydime]

Going by the pitch of the factory headbolts the 180 degrees you turn the bolt in the last 2 steps is about 1/32 to 1/16 on an inch in stretch. I don't know about you but thats a lot of spring in the bolt.