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Carguyjosh
Carguyjosh, ASE Certified Technician
Category: Cadillac
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Experience:  ASE certified tech, 17yrs experience
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2000 Cadillac Catera: torque specs..it mean when it says +90 degrees

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what are the torque specs for a 2000 Cadillac Catera? Also what does it mean when it says +90 degrees?

Good evening.
The cylinder head torque specs are as follows.

The first pass you will need the cylinder heads to 18 foot-pounds.
The second pass you will need to tighten each bolt in Sequence an additional 90°.

The third pass, tighten each bolt an additional 90°.
The fourth pass, tighten each bolt an additional 90°.
The fifth and final pass, tighten each bolt an additional 15°...

 

hopefully this helps explain your question of what does +90 mean.. when they are referring to +90 this is simply referring to degrees of rotation...

 

please let me know if you have any additional questions...

 

thanks, Josh

Customer: replied 6 years ago.
I get the 90 degrees its just what would be the sequence to it, in other words which bolt do I start with?

Here is the cylinder head tightening sequence...

 

Thanks, Josh

graphic

Customer: replied 6 years ago.
Okay that explains a lot more, just let me make sure I got everything right. So each and every bolt needs to be tighten to 18 foot-pounds and from there every bolt needs to be tightened again in sequence 90+90+90+15+15degrees, for a total of 6 passes right?

Okay.
You got everything just about right. The only thing you have extra is at the end of your torque sequence you have one extra 15 foot pound step... this is only a five step procedure. 18 foot-pounds, 90°, 90°, 90°, 15°....

 

One thing I did not mention that you may already be aware of is that you must use new head bolts.

 

By the way, I just noticed your user ID. Good name. LOL

 

thanks, Josh

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