Erich Posted April 15, 2007 Share Posted April 15, 2007 Stephanie did the timing belt and water pump on our recently purchased 1991 LS400. The car has 230k miles, and we purchased KNOWING It needed both. On the way up to the shop the belt snapped! Upon taking it all apart we found all tensioner parts SIEZED! The pump SIEZED. I checked the casting date on the pump to find a 1990 mid/late casting. This tells me its most likely original, and never done. So basically this car went 230k miles on original belt! The cars back together and you will be seeing more of it as its getting fixed up. Quote Link to comment Share on other sites More sharing options...
teamer Posted April 16, 2007 Share Posted April 16, 2007 Stephanie did the timing belt and water pump on our recently purchased 1991 LS400. The car has 230k miles, and we purchased KNOWING It needed both. On the way up to the shop the belt snapped!Upon taking it all apart we found all tensioner parts SIEZED! The pump SIEZED. I checked the casting date on the pump to find a 1990 mid/late casting. This tells me its most likely original, and never done. So basically this car went 230k miles on original belt! The cars back together and you will be seeing more of it as its getting fixed up. Wow, Erich, that is an incredible amount of miles for the original belt and water pump! Some parts can go incredibly long! Do you have any pics of the water pump? I have a 90 LS400 (108k mi), the previous owner claimed that the belt and pump was replaced. Not sure how to check once I remove all the engine covers. If you can take a pic of where the casting date is located, please post or send to me: dtsang@halff com. I would love to see photos of your belt job. Thanks! Quote Link to comment Share on other sites More sharing options...
99tjadams Posted April 17, 2007 Share Posted April 17, 2007 I would also love to know how to check the casting/date on the waterpump, as a car Im looking at has a sticker reporting the belt was replaced at 60,000 miles(101,000 kilometers) and want to verify if the pump was also replaced. Quote Link to comment Share on other sites More sharing options...
Erich Posted April 18, 2007 Author Share Posted April 18, 2007 Casting dates are usually in circle or grid formation. Usually its 2 digits lik 89 90 91 92 93 94 00 03 04 06 There will be a a 9 for examble is 1999. A 0 is 00. Then there are a split pie in 12 partitions. These are usually marked...signifying month. This marking I found on the cast metal water pump was a 90 with a bunch of checks. Unless someone used OLD stock pump this is original. if it had been like 96 or later.. i would assume changed.. Quote Link to comment Share on other sites More sharing options...
Gunnut Posted April 18, 2007 Share Posted April 18, 2007 Casting dates are usually in circle or grid formation. Usually its 2 digits lik 89 90 91 92 93 94 00 03 04 06 There will be a a 9 for examble is 1999. A 0 is 00. Then there are a split pie in 12 partitions. These are usually marked...signifying month. This marking I found on the cast metal water pump was a 90 with a bunch of checks. Unless someone used OLD stock pump this is original. if it had been like 96 or later.. i would assume changed.. Could be a rebuilt pump. Quote Link to comment Share on other sites More sharing options...
Erich Posted April 19, 2007 Author Share Posted April 19, 2007 Casting dates are usually in circle or grid formation. Usually its 2 digits lik 89 90 91 92 93 94 00 03 04 06 There will be a a 9 for examble is 1999. A 0 is 00. Then there are a split pie in 12 partitions. These are usually marked...signifying month. This marking I found on the cast metal water pump was a 90 with a bunch of checks. Unless someone used OLD stock pump this is original. if it had been like 96 or later.. i would assume changed.. Could be a rebuilt pump. true, but i was not aware of these being rebuilt. Quote Link to comment Share on other sites More sharing options...
teamer Posted April 19, 2007 Share Posted April 19, 2007 Casting dates are usually in circle or grid formation. Usually its 2 digits lik 89 90 91 92 93 94 00 03 04 06 There will be a a 9 for examble is 1999. A 0 is 00. Then there are a split pie in 12 partitions. These are usually marked...signifying month. This marking I found on the cast metal water pump was a 90 with a bunch of checks. Unless someone used OLD stock pump this is original. if it had been like 96 or later.. i would assume changed.. Could be a rebuilt pump. true, but i was not aware of these being rebuilt. Erich, can you send me any photos of your water pump/job? dtsang@halff.com Thanks! Quote Link to comment Share on other sites More sharing options...
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