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Author Topic:   valve layout
robertjb
Journeyman

Posts: 6
From: Shingle Springs
Registered: Jan 2003

posted 12-09-2004 08:09 PM     Click Here to See the Profile for robertjb   Click Here to Email robertjb     Edit/Delete Message   Reply w/Quote
Can someone please e-mail me a sketch
of the intake/exhaust valve layout for
the 2.8L v6? (1974) I just want to make
sure I have it right. tks

[email protected]

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missing link
Journeyman

Posts: 75
From: kansas city mo
Registered: Nov 2004

posted 12-10-2004 03:28 AM     Click Here to See the Profile for missing link   Click Here to Email missing link     Edit/Delete Message   Reply w/Quote
This is per 1981 chilton manual for 74-81. Valve arrangement is from front to rear, left bank is I-E-E-I-E-I, right bank is I-E-I-E-E-I. Hope this helps can't find pic in book. Did you get the valves adjusted? I have a Haynes manual that shows cold and hot adjustment settings. The chilton just says that engine must be at normal operating temp. Chilton says for intake valve that 0.014 in. feeler gauge has slight drag and 0.015 feeler is a tight fit. Exhaust is 0.018 in. feeler has slight drag and 0.019 is a tight fit. Both the chilton and haynes manuals show a chart for adjusting the valves ie.. intake valve just opening on #5 cylinder adjust both valves on #1.
If you would like chart or cold settings from haynes let me know and I will repost.
Hope this helps.
Also chilton says after operating temp is reached & valve cover is removed to torque rocker arm support bolts to 46 ft lbs. Valve adjustment is for 2800 through 76 and slightly diff. for 77-79.

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robertjb
Journeyman

Posts: 6
From: Shingle Springs
Registered: Jan 2003

posted 12-10-2004 04:40 PM     Click Here to See the Profile for robertjb   Click Here to Email robertjb     Edit/Delete Message   Reply w/Quote
Thanks for the info guys. I really appreciate
it.
Misssing link, yes I would like to have the
cold valve settings. This engine is not
easy to keep taking the valve covers off and
on. In fact, any info on that engine would
be greatly appreciated. tks

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missing link
Journeyman

Posts: 75
From: kansas city mo
Registered: Nov 2004

posted 12-10-2004 06:18 PM     Click Here to See the Profile for missing link   Click Here to Email missing link     Edit/Delete Message   Reply w/Quote
haynes manual, valve clearance cold intake 0.014, exhaust 0.016 in. Now the hot settings are intake 0.008 in and exhaust is 0.016.
I haven't worked on the 2.8 but it seems as though the hot setting for the intake valve is pretty tight. I think I would go with the cold settings first and see how it runs.

valve adjust chart. #5 intake valve opening check both valves on #1. #3 opens check #4, #6 check #2. #1 check #5, #4 check #3, #2 check #6.

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missing link
Journeyman

Posts: 75
From: kansas city mo
Registered: Nov 2004

posted 12-10-2004 06:37 PM     Click Here to See the Profile for missing link   Click Here to Email missing link     Edit/Delete Message   Reply w/Quote
just looked up 2.8L in the fox-body haynes manual. It also states 0.016 in for intake and 0.018 in for the exhaust. It also says to adjust cold. no hot settings.
Hope this helps.

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