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BP Head Lifting

Old Oct 23, 2018 | 11:10 AM
  #81  
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Originally Posted by SpartanSV
I find it hilarious that you're claiming you know what you're doing and you think a straight extension/adapter changes the torque on the fastener.
Because I feel this is going to be a sidebar (I've always been told the same thing). I learned something today.


Last edited by Midtenn; Oct 23, 2018 at 11:23 AM.
Old Oct 23, 2018 | 11:16 AM
  #82  
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Video no worky but if we're siting sources here's mine. Something like a crow's foot extension that extends parallel to the wrench will change torque. A straight extension perpendicular will not. I think that's where the myth comes from.

Does an extension affect a torque wrench? | Helping you work smarter not harder
Old Oct 23, 2018 | 11:23 AM
  #83  
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Originally Posted by Twibs415


I blew up a modded oem gasket and the cometic now. Our setups are similar is true but the motors are completely different in a few major ways.

Arp reccomends 65lbs so I’m not far off. If anything once you add the extension and an adapter 70lbs ends up being a bit less.

It cracks me up how the community is so stuck in a “it can’t be” attitude when it comes to stuff like this.
Just another data point. Take it for what it’s worth or ignore it, makes no difference to me.



Last edited by k24madness; Oct 23, 2018 at 05:25 PM.
Old Oct 23, 2018 | 11:24 AM
  #84  
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Fixed the YT link/embed.
Old Oct 23, 2018 | 11:35 AM
  #85  
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Originally Posted by Midtenn
Fixed the YT link/embed.
Old Oct 23, 2018 | 11:42 AM
  #86  
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Weird. I learned something today, too.
Old Oct 23, 2018 | 12:55 PM
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Learned something new today as well. Old timers told me wrong
Old Oct 23, 2018 | 02:39 PM
  #88  
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Originally Posted by codrus
Even with 11:1 and the head decking, you're only running 10 psi of boost. I'd be surprised if it's all that much higher cylinder pressure than (say) my car running 9:1 (with unknown but significant head machining) and 24 psi of boost.
Depends on what the dynamic compression and timing is. I could easily believe a low-timing 9:1 setup at 24psi with a late IVC event could have a lot less peak pressure than a 13:1, high-timing, early IVC setup.
Old Oct 25, 2018 | 11:13 PM
  #89  
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Along the lines of these questions, should we be going over 65lbs for the arps if we're pushing higher boost? Like 25-30psi range. Up to maybe 70-75?

I don't want to crack the head, but sounds like chance of lift increases with more pressure which is totally shocking and all! (Yay jokes!)

Thanks for sharing that torque wrench video up thread!
Old Oct 28, 2018 | 04:27 PM
  #90  
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Originally Posted by ridethecliche
Along the lines of these questions, should we be going over 65lbs for the arps if we're pushing higher boost? Like 25-30psi range. Up to maybe 70-75?

I don't want to crack the head, but sounds like chance of lift increases with more pressure which is totally shocking and all! (Yay jokes!)

Thanks for sharing that torque wrench video up thread!
I'm pretty sure when i redid mine with the new bigger washers we went to 90, OEM head gasket and no problems since at 32-35 psi with a couple of pulls up to 40psi
Old Oct 29, 2018 | 03:39 AM
  #91  
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My 2c on extension bars.

Yeah they DEFINITELY lower the output torque of a concussion tool (ie a rattle gun) because the shaft twists and absorbs some of the whack, but on a torque based tool (ie a ratchet) they make no difference because the torque is constant.

You can test this by hand easily, infact, proving that an extension lowers a rattle guns effectiveness is easy, just get a bolt which wont come out with an extension on it then hit it with the gun sans extension and watch it come right out.


Dann

Last edited by nitrodann; Oct 29, 2018 at 05:46 AM.
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