chevynut
12-26-2015, 05:27 PM
I was shopping for new u-joints for my C4 halfshafts a while ago and I noticed that they specify "zinc phosphate coated" u-joints for aluminum halfshafts and driveshafts. They're OVER THREE TIMES the price of "uncoated" ones. How big of a deal is this?
My Denny's aluminum driveshaft has UNCOATED 1350's in it.
Here's what Denny's says about it...
"IMPORTANT NOTE DISCLAIMER: Technically the 1984 to 1996 Corvette Aluminum Driveshafts and Half Shafts should use the COATED Universal Joints (see Spicer 5-3613X and 5-3615X) but it seems that many 1984 to 1996 Corvette owners have used the Spicer 5-1310X and 5-1350X UNCOATED universal joints with great success. They DID NOT experience any corrosion or problems in using the uncoated u-joints in their aluminum shafts. While it is not recommended to use uncoated u-joints it seems that it is commonly done without any detrimental effects. Please make your choice carefully. "
My Denny's aluminum driveshaft has UNCOATED 1350's in it.
Here's what Denny's says about it...
"IMPORTANT NOTE DISCLAIMER: Technically the 1984 to 1996 Corvette Aluminum Driveshafts and Half Shafts should use the COATED Universal Joints (see Spicer 5-3613X and 5-3615X) but it seems that many 1984 to 1996 Corvette owners have used the Spicer 5-1310X and 5-1350X UNCOATED universal joints with great success. They DID NOT experience any corrosion or problems in using the uncoated u-joints in their aluminum shafts. While it is not recommended to use uncoated u-joints it seems that it is commonly done without any detrimental effects. Please make your choice carefully. "