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Guys with aluminum heads?

  • Thread starter Thread starter monte87
  • Start date Start date Feb 11, 2008

monte87

Founding Member
Feb 26, 2001
876
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49
new york
Feb 11, 2008
#1
  • Feb 11, 2008
  • #1
Greetings guys-

Guys with aluminum heads-need some help here!!! When torquing the lower cobra manifold to aluminum heads, Whats the TORQUE setting??? Dont feel like stripping head threads-Ughhhhhhhhhhhhhh! Got the sequence down pat, just need the setting.

Thanks a bunch, Anthony
 

NKau

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Dec 15, 2001
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Jefferson, WI
Feb 11, 2008
#2
  • Feb 11, 2008
  • #2
I know there's a range for what the lower intake bolts are supposed to be torqued to (13-18 ft/lb. maybe?). If you're nervous, stay on the low end of the specified range. My edelbrocks had heli-coils in them (whatever you have might too), so it really wasn't an issue.

You should recheck the torque on the lower intake after a few engine heat cycles.
 

monte87

Founding Member
Feb 26, 2001
876
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Feb 11, 2008
#3
  • Feb 11, 2008
  • #3
NKau said:
I know there's a range for what the lower intake bolts are supposed to be torqued to (13-18 ft/lb. maybe?). If you're nervous, stay on the low end of the specified range. My edelbrocks had heli-coils in them (whatever you have might too), so it really wasn't an issue.

You should recheck the torque on the lower intake after a few engine heat cycles.
Click to expand...

Not talking about the upper plenum bolts, more like the lower manifold itself???

Thansk Ant
 

BlownFiveLiter

have car, will race....wait, it doesn't run
15 Year Member
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Feb 11, 2008
#4
  • Feb 11, 2008
  • #4
He was referring to the lower intake bolts, as far as I know. I'm pretty sure I did all my lower bolts to 16 lb. ft.
 

NKau

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Feb 11, 2008
#5
  • Feb 11, 2008
  • #5
StangGT1995 said:
He was referring to the lower intake bolts, as far as I know. I'm pretty sure I did all my lower bolts to 16 lb. ft.
Click to expand...

Yep, I thought I remembered torquing mine to about 15 ft/lbs.
 

monte87

Founding Member
Feb 26, 2001
876
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new york
Feb 12, 2008
#6
  • Feb 12, 2008
  • #6
Just found an article from FORD racing tech that stated intake manifold TQ should be no more than 23lbs on aluminum heads.
Ant
 

Fast63

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Sep 20, 2007
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Feb 12, 2008
#7
  • Feb 12, 2008
  • #7
The instructions that came with my trick flow heads said to "just torque them by feel" LOL!! I know it sounds funny, but getting an exact torque reading on the intake is not super important, as long as it is torqued down enough to not leak. I recommend re-torquing the intake too after you run it once because they usually loosen up a little. If you don't want to do that, torque them to about 20lbs and it should be ok.
 

monte87

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Feb 26, 2001
876
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Mar 5, 2010
#8
  • Mar 5, 2010
  • #8
Bump!!!!!!!!
 

84Ttop

They make new pistons every day, so why worry?
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Mar 5, 2010
#9
  • Mar 5, 2010
  • #9
Most tech books we have rec. 24 ft lbs, but for me that's way too much and have seen too many heads stripped at that high of a setting. I personally stay around 15 ft lbs if I do get out the torque wrench. I always use fel-pro gaskets, and never use the rubber or cork end gaskets, the "right stuff" is all I put on the ends.
 

monte87

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Feb 26, 2001
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Mar 5, 2010
#10
  • Mar 5, 2010
  • #10
Thanks Bud, but-Question-
Would you start out for the first round at a lower setting or just shoot for the 16lbs off the bat???

Thanks bro, Anthony

84t-top said:
Most tech books we have rec. 24 ft lbs, but for me that's way too much and have seen too many heads stripped at that high of a setting. I personally stay around 15 ft lbs if I do get out the torque wrench. I always use fel-pro gaskets, and never use the rubber or cork end gaskets, the "right stuff" is all I put on the ends.
Click to expand...
 

84Ttop

They make new pistons every day, so why worry?
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#11
  • Mar 5, 2010
  • #11
I would just torque them in 1 step, w/ that low of a setting, doing it in steps would be pointless.
 
8

885.0conv

Member
Jan 9, 2008
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0
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Phoenix, Az
Mar 6, 2010
#12
  • Mar 6, 2010
  • #12
I do mine three steps:

96 in/lbs
12 ft/lbs
15 ft/lbs

just to be safe but I don't see doing it in one step as a problem.

I recently had problem with the bolts tightening so I went to studs.
 

monte87

Founding Member
Feb 26, 2001
876
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new york
Mar 6, 2010
#13
  • Mar 6, 2010
  • #13
Are you running aluminum heads?

Thanks Ant

885.0conv said:
I do mine three steps:

96 in/lbs
12 ft/lbs
15 ft/lbs

just to be safe but I don't see doing it in one step as a problem.

I recently had problem with the bolts tightening so I went to studs.
Click to expand...
 
8

885.0conv

Member
Jan 9, 2008
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Mar 6, 2010
#14
  • Mar 6, 2010
  • #14
Sorry, though my sig was on. Yeah I have TFS heads I bought used, guy said they just had 10k miles on them but don't know about that now. Exhaust was turning cherry red so when I went to check the lower for loose bolts had two spin on me so decided to go with the studs.
 

Tanus

New Member
Dec 11, 2009
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A to the Z
Mar 6, 2010
#15
  • Mar 6, 2010
  • #15
Fast63 said:
The instructions that came with my trick flow heads said to "just torque them by feel" LOL!! I know it sounds funny, but getting an exact torque reading on the intake is not super important, as long as it is torqued down enough to not leak.
Click to expand...
thats how I do um, but my threads are heli-coiled and I use studs so I can torque mine to 30 or 40 foot lbs without any problem
 

monte87

Founding Member
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876
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new york
Mar 7, 2010
#16
  • Mar 7, 2010
  • #16
Thanks guys!!!!
 
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