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Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9

SS Valve ?

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Old Jan 5, 2015 | 07:09 AM
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Default SS Valve ?
Question are aftermarket hollow stem SS valves magnetic?
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Old Jan 5, 2015 | 08:00 AM
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The tip will be, but not the rest of the valve.
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Old Jan 5, 2015 | 07:13 PM
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Thats my problem the entire valve is magnetic! I took a head to the shop today to have them pop a intake and exhaust valve and see if they are marked and to weigh them would not surprize me if the place i bought them from did some shady S*** nothing but issues with these heads since i got them and they never even been bolted on!
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Old Jan 5, 2015 | 07:38 PM
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Cheap valves then I would guess. Good quality stainless steel shouldn't be magnetic.
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Old Jan 5, 2015 | 11:15 PM
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So i talked with another guy who has the same hollow SS valves and he said they are magnetic so they must have a lower grade of stainless in them. These are Mast valves i'm talking about in case that helps any.
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Old Jan 6, 2015 | 05:48 PM
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You know what's wierd, I just checked a set of GM hollow LS3 intake valves and GM solid stem LS2 valves and they're magnetic. The set of REV 2.080" valves I have aren't though.
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Old Jan 6, 2015 | 10:03 PM
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So i was told that premium alloy stainless is magnetic dont know if that is what i have or not just yet!
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Old Jan 6, 2015 | 11:08 PM
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Certain different grades of stainless steel can be slightly magnetic...it depends on material grade and there are tons of different stainless steels
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Old Jan 7, 2015 | 07:00 PM
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So i had the valves pulled and checked out and weighed they are Mast valves per the numbers on them 2.250 hollow stem SS intake weight 113 grams and 1.600 Inconel exhaust 100 grams. The machine shop said they are SS just who knows what grade.
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Old Jan 11, 2015 | 05:48 PM
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If memory serves me correctly the mast valves are from REV. You might call them, they can compare the part # & see if its theirs.

Hope this helps!
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Old Jan 11, 2015 | 06:30 PM
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Will do Thanks!
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