bolts
- Thread starter JNasty
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Supramania Contributor
No.
When you tourqe a bolt, you have to overcome the friction of the threads, the washer and the pads where the bolt touches the washer.
More importantly, where the threads engage in the metal in the block, the force on each thread is not even, and some threads are stressed while others are under minimal pressure by comparison.
With a stud, the nut at the top applies force to the stud, pulling it up against all the threads more evenly, and while you still have the friction of the nut and washer to deal with, you can moly lube them easy, and control that better too.
The short story is studs generally provide a more even clamping force on the head than bolts, and that is really what you want. (And you can apply more of that clamping force with studs, so it's the double advantage in my book.)
What is the price difference? Like 20.00 right? Get the studs.
When you tourqe a bolt, you have to overcome the friction of the threads, the washer and the pads where the bolt touches the washer.
More importantly, where the threads engage in the metal in the block, the force on each thread is not even, and some threads are stressed while others are under minimal pressure by comparison.
With a stud, the nut at the top applies force to the stud, pulling it up against all the threads more evenly, and while you still have the friction of the nut and washer to deal with, you can moly lube them easy, and control that better too.
The short story is studs generally provide a more even clamping force on the head than bolts, and that is really what you want. (And you can apply more of that clamping force with studs, so it's the double advantage in my book.)
What is the price difference? Like 20.00 right? Get the studs.
Don't forget, that besides single axis resistance vs two axis, it is so much easier to lay the new gasket down the studs, then drop the head down. With the bolts, you lay the gasket flat on the block, then hope you don't misalign it as you set the head down on it, then thread the bolts in. the studs are a perfect guide for the gasket.
suprarich said:
Course that's only if you happen to have your engine out of the vehicle. I thought the exact same thing till I went to put my head on with the block in the vehicle. Firewall prevents being able to drop it in on the studs. Well, at least it did in my case. Perhaps you had a different experience?
a little firewall massaging with a hammer solves it.
but definitely there will be guys that aren't willing to take that step.
but definitely there will be guys that aren't willing to take that step.
As long as you don't try to put it on with all the studs in it's not all that difficult. I also eliminated my EGR so that cleared a little space.
don't put on the last couple of studs in the back of the block when installing the head you silly butts... Put them one after you have the head on 
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what if i bought a piece of pipe that is threaded on the end that will fit in the block just to line up the head then pull the pipe and put in the bolt
jza70mk3 said:
You can do that, but be very careful. Still to answer your original question, the studs are better hands down, but if you aren't shooting for huge power, you should be fine with the bolts
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