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Cylinder Head & Short Block 4G63 cams, valvetrain, pistons, rods, stroker kits, 6-bolt swaps, hybrids, etc. Read this Forum's Strict Guidelines.

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Old 10-29-2009, 03:37 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #1 (permalink)
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2G-specific Torquing main and rod bolts

My service manual says to torque the rod bolts 14.5ft/lbs plus 90* and my mains to 18 ft/lbs plus 90* as well , is that right?

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Old 11-03-2009, 08:46 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #2 (permalink)
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If that is what it says then it is right.


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Old 11-03-2009, 10:51 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #3 (permalink)
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You didn't reuse the old rod bolts, did you?

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Old 11-03-2009, 10:58 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #4 (permalink)
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I torqued my rods to 45ftlbs and mains to 50ftlbs

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Old 11-03-2009, 11:01 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #5 (permalink)
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do what the book says. alot of vehicles call for an additional 90*
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Old 11-03-2009, 11:18 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #6 (permalink)
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Stretch is a much more accurate way of torquing than just "click click" anyways.


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Old 11-03-2009, 11:19 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #7 (permalink)
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Quote:
Originally Posted by danny_l_2005 View Post
My service manual says to torque the rod bolts 14.5ft/lbs plus 90* and my mains to 18 ft/lbs plus 90* as well , is that right?
That's what it say's in 7 bolt manuals, and you're suppose to use a torque angle gauge for best results otherwise just guesstimate with markings. ( white out)


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Old 11-03-2009, 11:32 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #8 (permalink)
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Quote:
Originally Posted by MidShipCivic View Post
That's what it say's in 7 bolt manuals, and you're suppose to use a torque angle gauge for best results otherwise just guesstimate with markings. ( white out)
For my stock rod bolts, I just took a hammer and tapped the old ones out then tapped the new ones in. I torqued them both down to 14.5 ft/lbs and plastigauged them. After that I torqued them all down to 14.5 ft/lbs and pretty much just eyeballed the 90* turn. I guess we'll see what happens when I get it back together. Not saying this is the right way, but thats how I did it with the stock 2g rod bolts.

I torqued my ARP main studs to 65 ft/lbs. Just make sure to do them in the right sequence and do them in increments with the last being the biggest jump.

Good Luck!


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Old 11-04-2009, 11:32 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #9 (permalink)
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From: Patrick AFB, Florida
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The torque angle method is the least accurate method to tighten the rod bolts.

Using a torque wrench is better than that if you know what the final torque should be. I personally measure rod bolt stretch. Thats the most accurate.

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Old 11-06-2009, 08:46 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #10 (permalink)
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Rod bolt stretch is definitely the MOST accurate, followed by angle torquing, then by click click. The worse part is that a bolt stretch gauge is super expensive for a weekend wrench spinner.
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Old 11-07-2009, 08:54 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #11 (permalink)
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From: Patrick AFB, Florida
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Originally Posted by JesterJess View Post
Rod bolt stretch is definitely the MOST accurate, followed by angle torquing, then by click click. The worse part is that a bolt stretch gauge is super expensive for a weekend wrench spinner.
40 bucks from jegs or summit will get you a good rod bolt stretch gauge.

ARP's site lists the torque angle method as the least accurate, not saying your wrong, just saying I definitely trust ARP.

ARP | Tech - Installation

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