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#1
10-13-2007, 12:44 PM
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valve spring question
I got a crane cams cam kit. came with cam, lube, springs,retainers..but it doesnt come with oil shields. The piece that fits over and around the top of the valve spring. The one's that are on the engine now dont fit the new retainers.
So what do these oil shield do( other than what the name implies) ? And is it necessary? I would think that if it was Crane would of sent them... Any insight would be greatly helpful Thank John
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1984 Camaro 5.7L 350 700R4 Holley 650 Cfm Edelbrock Performer Intake-Manifold Crane Cams Duration @ .050": 204/214 Lift:420/442 Summit HEI Distributor Hedman Shorty Headers Hedman Y-pipe Dynomax Turbo cat-back NOS Decal VTEC Decal 
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#2
10-15-2007, 08:23 AM
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Re: valve spring question
John,
IF you have positive valve stems seals (they "clamp" over the guide boss), there's no need for the shields. We leave them out of all but "pure" restorations. Dead weight with no gain... If you don't have the seals, you're going to have oil issues, as the Crane retainers won't like the "O" rings, either. Pioneer sells a seal "OS-938", that will fit tightly over the guide boss. Jim
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