Need quick help used wrong pattern lower intake

T

tbud

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Sep 7, 2005

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Mar 3, 2006

#1

• Mar 3, 2006

• #1

Yesterday when torquing down the a cobra lower on GT40p heads. I used a center out torque patten to 23 lbs of torque. I now know this is the wrong pattern. Should I redo it? Will I need new gaskets or can I just loosen up the bolts and retorque with the proper sequence. Car still has upper off and hasnt run.
Thanks

 

D

Daggar

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Jul 19, 2004

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#2

• Mar 3, 2006

• #2

I say fire it up and run it. If you have problems then get new gaskets and redo it.

 

MrKwik

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Mar 3, 2006

#3

• Mar 3, 2006

• #3

I wouldnt lose any sleep on it. I allways go center out...thats wrong?

 

DMAN302

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Nov 8, 2003

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Mar 3, 2006

#4

• Mar 3, 2006

• #4

I have retorqued out of sequence..I would just go with it..you'll have to retorque in a few miles anyway..or you should.

 

vristang

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Mar 31, 2005

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#5

• Mar 3, 2006

• #5

I always thought center out was the proper sequence too.

 

T

tuff5liter

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Mar 3, 2006

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#6

• Mar 3, 2006

• #6

center out is the right pattern i just went thru this crap on my car all the torque sequences you find on the net is wrong....i went thru like 5 sets of gaskets before i figured it out

it should be done in 3 steps
8ft lbs
16ft lbs
25ft lbs.


9 5 1 3 7 11
----towards the radiator--->
12 6 4 2 8 10

 

T

tbud

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Mar 4, 2006

#7

• Mar 4, 2006

• #7

I did it in three steps but the pattern you described is kind of like a star pattern. I torqued the intake just like the head bolts pattern
1173159
12842610
I hope this makes sense.

 

legalize420

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May 21, 2005

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Mar 4, 2006

#8

• Mar 4, 2006

• #8

tbud said:

I did it in three steps but the pattern you described is kind of like a star pattern. I torqued the intake just like the head bolts pattern
1173159
12842610
I hope this makes sense.

Click to expand...

you should be fine

 

Maryland Stang

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Aug 21, 2002

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Mar 4, 2006

#9

• Mar 4, 2006

• #9

According to my Ford factory service manual the sequence is as follows.

There are 6 bolts on each side. Looking at the engine from the front of the car the number 1 bolt will be at the front and left side of the engine. The number 7 bolt will be at the front and right side of the engine. The left side has bolts 1 through 6 and the right side has bolts 7 through 12.

The sequence is:

2-11-5-8-1-7-6-12-3-10-4-9

 

Michael Yount

Mustang Master

Apr 10, 2002

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Mar 4, 2006

#10

• Mar 4, 2006

• #10

Center out is incorrect for the lower intake. Maryland Stang has listed the proper pattern.

Simply loosen them a bit and retorque. I'd take it up in 2 or 3 steps - if things are true and square, 18-20 ft-lbs is plenty.

 

vristang

15 Year Member

Mar 31, 2005

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Mar 4, 2006

#11

• Mar 4, 2006

• #11

I may have been doing it wrong for 10yrs?

Can anyone look up what the Chiltons/Haynes manuals list as the torque sequence?
Does it match the Ford Manual?

jason

 

Maryland Stang

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#12

• Mar 4, 2006

• #12

vristang said:

Can anyone look up what the Chiltons/Haynes manuals list as the torque sequence?
Does it match the Ford Manual?

Click to expand...

No they do not. My Haynes manual says to torque from the middle out and my Chilton manual gives no sequence, it just says to tighten them.

 

Michael Yount

Mustang Master

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Mar 4, 2006

#13

• Mar 4, 2006

• #13

The sequence you need is listed by Maryland Stang above - here's another similar version of it --- as if you're standing in front of the car looking under the hood; tighten them in the order of the numbers:

5--6
3--2
11--10
9--12
1--4
7--8

You'll see the middle 4 bolts get tightened in an X-pattern LAST; intermediate 4 bolts get tightened in an X-pattern FIRST; and the 4 corners are tightened one end at a time IN BETWEEN the intermediate bolts and the middle bolts.

Use a torque wrench so you don't OVERTIGHTEN them - the castings are fragile. I'd take it to 10 ft-lbs in order; then 15; then a final pass to 18-20.