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#1
07-24-2008, 04:32 PM
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Need help identifying valves!
I am currently replacing the head gaskets on my 99 3100 sfi cutlass supreme and now need help identifying which valve is which (exhaust and intake) I have the intake manifolds put back on and now cannot tell which valve is which :-( The only thing I can find in any haynes or chilton manual tells me that the intake pushrods are longer and the exhaust rods are shorter...But not which valve is which, I need help, please!
-Brad 
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#2
07-25-2008, 03:36 PM
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Re: Need help identifying valves!
no one knows?
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#3
07-26-2008, 02:58 AM
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Re: Need help identifying valves!
If you know whether your car is a J or an M VIN, your best bet might be to go here:
http://www.partsamerica.com/Default.aspx Click on "Replacement Auto Parts" on the left column and then pick out your year/model. For the M model, it shows the intake valve being larger at 1.718" diameter. The Exhaust valve is smaller at 1.425 " diameter. For the J model it only shows the intake diameter at 1.76" diameter. It doesn't show the exhaust diameter. Hope this helps!
__________________
96 Geo Metro H/B 1.0 L, 5 sp, A/C 103K miles (165,762 KM) 96 Geo Metro LSi 1.0 L, 5 sp, 1025 miles (1649 KM) 91 Olds Ciera 2.5L 2 DR Auto
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