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Author Topic:   Intake Bolt Torques

Posts: 36
From: Maryland
Registered: Apr 2000

posted 06-19-2001 11:06 PM     Click Here to See the Profile for bifs66     Edit/Delete Message   Reply w/Quote
I'm installing an aluminum intake manifold on a 5.0 based engine with AFR 185 aluminum heads. The specs with the heads say to "hand tighten" the intake bolts. This is a little vague. Since these heads do not have steel insert threads, does anyone know a reasonable torque figure to use on the intake bolts. Thanks, Bernie

Bernie Frank
66 Fastback restomod project
67 Coupe (original)
85 GT (preserved)
82 GT (original)

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Posts: 155
From: Concord,CA
Registered: May 2000

posted 06-19-2001 11:09 PM     Click Here to See the Profile for Billgear   Click Here to Email Billgear     Edit/Delete Message   Reply w/Quote
I hand tightened my Alum intake on my AFR 165cc heads, I have had no leaks!

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richard bohm

Posts: 169
Registered: May 2001

posted 06-20-2001 04:40 AM     Click Here to See the Profile for richard bohm   Click Here to Email richard bohm     Edit/Delete Message   Reply w/Quote
no more than 25ft lbs of torque!!

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Posts: 8489
From: Lyons, IL, USA
Registered: May 99

posted 06-20-2001 11:35 AM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Follow the torque sequence gradually several times until you can barely move a 3/8th ratchet anymore. Or, about 30 ft lbs.

Alex Denysenko
Co-Administrator and Moderator
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Posts: 175
From: Bay Area, CA
Registered: Apr 2001

posted 06-20-2001 01:50 PM     Click Here to See the Profile for JAAZZY     Edit/Delete Message   Reply w/Quote
I've always tourqued my aluminum intake to my TFS heads to 25 ft lbs. I do it again after I drive it around(after it cools) and have never had a leak.

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