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#1
07-27-2002, 05:14 PM
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Life of Valve guides
I am in the process of rebuilding an M103 300E engine and I am not sure whether or not I need new valve guides. There seems to be a little play between the valve and the valve guide but I do not know if it is too much. The engine had 100K miles on it. Can anyone help me out here?
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George Carstens 
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#2
07-28-2002, 08:18 AM
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A little bit of wiggle is normal. Just put seals in it.
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I got too many cars!! Insurance eats me alive. Dave 78 Corvette Stingray - 3k 82 242 Turbo Volvo - Manual - 270k 86 300e 5 speed manual - 210k 87 420sel - 240k 89 560sl - 78k 91 420sel - 205k 91 560sel - 85k 94 GMC Suburban - 90k 97 Harley Davidson Heritage Softail - 25k 00 GMC Silverado 1 ton 30k
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#3
07-28-2002, 08:35 AM
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If your building it, replace the guides. 103 guides last 100 to 150k miles. I had one set gone at 85k.
Joe
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Project Smoker, '87 603 powered wagon Hauler, 96 CTD can you say torque? Toy 73 Cougar xr7 convertible Acme Automotive Inc. Raleigh NC 919-881-0364
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#4
07-28-2002, 09:42 AM
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I would do them just because the 103s have a lot of swipe [side] force compared to engs like the 104s.
So they are just more prone to wear by valve train design....
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#6
07-29-2002, 07:03 PM
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This decision would be best left to a competent machinist. You have to have the valves ground and the head surfaced anyway. My 103 had 240,000 mi. and all mine were worn out and the shop replaced them.
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