Go Back   The Quad4Forums > Engine Specific Discussion > Quad 4/Twin Cam Problems > 2.3l Quad 4 Problems
Reply
 
Thread Tools Display Modes
  #1  
Old 11-17-2011, 12:37 AM
93RedGTZ's Avatar
93RedGTZ is offline
93RedGTZ
Registered User
Join Date: Nov 2011
Posts: 20
Make: Chevy
Model: Beretta GTZ
Engine: 2.3 DOHC HO
Proper Head Bolt Torque

Sometimes to much information is a bad thing. I have asked 5 different people and I have gotten 5 different answers....

I am trying to determine proper torque procedure for a 93 Beretta GTZ quad 4 HO

Haynes Manual for a 93 model car
10 4 2 6 8
9 5 1 3 7 Appears that 8 and 7 are the short bolts
Step 1
Bolts 1-6 18ft-lbs
Bolts 7-8 22ft/lb
bolts 9-10 26ft/lb
Step 2
Bolts 1-6 Rotate an additional 90 degrees in sequence
Bolts 7-10 Rotate an additional 60 degrees in sequence
Step 3
Loosen each bolt one turn (one at a time) and immediately tighten it to the Step 1 Value
Step4 Repeat Step 2.


From the AREA engine builders association
8 4 2 6 10
7 5 1 3 9 Appears 9 and 10 are the short bolts
Step 1
Bolts 1-8 30ft/lb
Bolts 9-10 26ft/lb
Step 2
Turn all bolts 90 degrees


From Autozone (local parts store)
7 3 1 5 9
8 6 2 4 10 Don't know which are long or short

Step 1: Torque to 26ft.lb
Step 2: Turn long bolts 100 deg
Step 3: Turn long bolts 110 deg



Which way is correct?
Reply With Quote
  #2  
Old 11-18-2011, 09:10 PM
p8ntman442's Avatar
p8ntman442 is offline
p8ntman442
Send a message via AIM to p8ntman442 who knows what wrong
Join Date: Apr 2003
Location: connecticut
Posts: 2,774
Classifieds Rating 100% (2)
Make: 2.3 quad 4 w41
Model: oldsmobile
Engine: calais
you need one additional source. The Felpro head bolts come with the correct specs. Never failed on me yet.

Haynes is way off.

I think AREA is the closest may be an exat match, but my sheet is at the shop and I'm not there.
__________________

Diagnose your rough running QUAD.
http://www.quad4forums.com/forums/sh...ad.php?t=18102

Engine specs
http://www.quad4forums.com/forums/techdata.php
Reply With Quote
  #3  
Old 11-19-2011, 03:38 AM
SuzukiGhost's Avatar
SuzukiGhost is offline
SuzukiGhost
Send a message via AIM to SuzukiGhost Send a message via MSN to SuzukiGhost Send a message via Yahoo to SuzukiGhost Quad Lover
Join Date: Feb 2008
Location: Milan NM
Posts: 1,481
Make: Oldsmobile
Model: Achieva SCX
Engine: 2.3L DOHC Quad/W41
Wtf is with Haynes? Why in the HELL would you torque it down to spec and back the TORQUE TO YIELD bolts out and do it all exactly the same again? Yet another reason to believe the Haynes company is run by retards....
__________________
1992 Beretta GTZ - Quasar Blue - Quad 4 HO/Getrag - Currently for sale

1993 Oldsmobile Achieva SCX W41 - Aqua - Quad 4 Getrag - Sold

1992 Oldsmobile Achieva SCX W41 - Black - Quad 4/Getrag - Sold

Reply With Quote
  #4  
Old 11-19-2011, 11:38 AM
p8ntman442's Avatar
p8ntman442 is offline
p8ntman442
Send a message via AIM to p8ntman442 who knows what wrong
Join Date: Apr 2003
Location: connecticut
Posts: 2,774
Classifieds Rating 100% (2)
Make: 2.3 quad 4 w41
Model: oldsmobile
Engine: calais
Does any of the GM literture state that these bolts are in fact torque to yield? I have my doubts. TTY typically reqiures replacement each time you install. The proceedure for the head bolts with the additional degrees is typical of a TTY install, but the proceedure is the same for main caps and rod caps, and I never replace them.

I have sucessfully run a motor with re-used head bolts and re-used head gasket, both had been installed, fired, raced a few laps, and then disassembled. They were re-used as a test with no issue. This is on a stock HO build. Went 8 nights on that setup with no issue.

Additionally torque to yield bolts typically have a necked section where the yield occurs, replacement felpro bolts are threaded the entire length. If you actually torqued to yield on the bolt it would not hold the torque the next time you applied it.

I'm not recommending re-using either by any means, I ran at my own risk knowing I had to do a rebuild if I was wrong.
Reply With Quote
  #5  
Old 12-03-2011, 04:07 PM
GTZ_rumble's Avatar
GTZ_rumble is offline
GTZ_rumble
Send a message via Yahoo to GTZ_rumble Registered User
Join Date: May 2009
Location: The BlueGrass
Posts: 42
Make: Chevy
Model: Beretta GTZ
Engine: 2.3L W41 QUAD
Yes, I have the fel-pro sheet, they match what your AREA shop told you.
Reply With Quote
  #6  
Old 12-14-2011, 11:41 PM
93RedGTZ's Avatar
93RedGTZ is offline
93RedGTZ
Registered User
Join Date: Nov 2011
Posts: 20
Make: Chevy
Model: Beretta GTZ
Engine: 2.3 DOHC HO
I used the Fel-Pro Torque specs that came with the head bolts.

9 3 1 5 7
10 6 2 4 8......9 & 10 short bolts

Torque bolts 1 through 8 (long bolts) to 30ft lbs (40Nm)
Torque bolts 9 and 10 (short bolts) to 26ft lbs (35Nm)
Finally, rotate all bolts 90degrees (1/4 turn)


Also, I called the Chevy Dealer
9 3 1 5 7
10 6 2 4 8.....9 and 10 short bolts

1-8 long bolts torque to 30ft lb
9-10 Short bolts 26ft lb
Rotate 90 in sequence.

Car is running great. Thanks for your help.
Reply With Quote
  #7  
Old 12-14-2011, 11:46 PM
086's Avatar
086 is offline
086
♙♙♙♙♙♙Detroit♙♙♙♙♙♙
Join Date: Dec 2005
Location: Some Undisclosed Location
Posts: 3,286
Classifieds Rating 100% (1)
Make: Z
Model: DOHC
Engine: The Shaker
C'mon u didnt click the impact to brute force mode and randomly hammer down in the bolts?

Job well done.
__________________
If no one comes from the future to stop you from doing it, then how bad of a decision can it really be?
PooP
Reply With Quote
Reply

Bookmarks

Similar Threads
Thread Thread Starter Forum Replies Last Post
Head Bolt Size matrix69 2.3l Quad 4 General Discussion 0 12-24-2005 11:42 PM
head bolt torque confusion... ChrisV6 2.3l Quad 4 General Discussion 1 10-11-2005 11:04 AM
head bolt torque sequence on a 683-18?? gomer 2.4l Twin Cam General Discussion 0 09-16-2005 04:31 PM
Awww fishpaste...head bolt torque issue quad4geek 2.3l Quad 4 General Discussion 6 08-24-2005 06:46 PM
How to Replace Your Cylinder Head and Gasket gOoIe B Engine 0 05-25-2005 06:04 PM


Tags
bolt, head, proper, torque



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 11:44 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright (C) quad4forums.com