Head bolt torque

Tiny
ANONYMOUS
  • MEMBER
  • 1998 LEXUS GS 300
  • 200,000 MILES
Head bolt torque specifications and sequence
Tuesday, April 9th, 2013 AT 3:59 PM

6 Replies

Tiny
KHLOW2008
  • EXPERT
Hello,

Here is a video on how to use a torque wrench and the diagrams below to show you the specs.

https://youtu.be/juOClONIWeY

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Tuesday, April 16th, 2013 AT 11:15 AM
Tiny
2BTTML
  • MEMBER
  • 1993 LEXUS GS 300
  • 6 CYL
  • AUTOMATIC
  • 200,000 MILES
I understand that the correct torque is 25 foot pounds and 90 degrees and 90 degrees but I would like a diagram of the torque sequence. If possible.
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Sunday, October 7th, 2018 AT 8:25 PM (Merged)
Tiny
CARADIODOC
  • EXPERT
Try this on for size. This is from ProDemand.
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Sunday, October 7th, 2018 AT 8:25 PM (Merged)
Tiny
CARADIODOC
  • EXPERT
That worked so well, I want to do it again!
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Sunday, October 7th, 2018 AT 8:25 PM (Merged)
Tiny
RDPHAM07
  • MEMBER
  • 1993 LEXUS GS 300
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 129,000 MILES
I have a repair manual both the book and CD. In the book it tells me that the bolts should be tightened to 25 foot pounds of torque plus an additional 90 degrees, but on the CD it tells me to tighten the bolts to 25 foot pounds of torque plus an additional 180 degrees. I was wondering which one is the proper way to tighten the bolts?
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Sunday, October 7th, 2018 AT 8:25 PM (Merged)
Tiny
MHPAUTOS
  • EXPERT
Hi there,

Step 1. 25Tf/ib
Step 2. 90 Deg
Step 3. 90 Deg.

Do not tighten 180 Deg in one go, this must be done in 3 steps and new head bolts must be used with all torque to yeald bolts.

Mark (mhpautos)
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Sunday, October 7th, 2018 AT 8:25 PM (Merged)

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