Darksyde Posted October 21, 2004 Report Share Posted October 21, 2004 Ok i have to travel 5 hrs on saturday to do my sisters waterpump in her 92 lumina. She doesnt know which motor she has. Either the 2.5 or the 3.1. I know where the pumps are on each motor. I know how to remove them and what not. However i have never done one on either motor. Is there anything i should prepare for? Anything to make sure to bring with me? Any tips or anything would be appreciated. Thanx Quote Link to comment Share on other sites More sharing options...
maybe2fast Posted October 21, 2004 Report Share Posted October 21, 2004 if its a 2.5 you will have tons of room to work with Quote Link to comment Share on other sites More sharing options...
DiscoStudd Posted October 21, 2004 Report Share Posted October 21, 2004 The water pump on the 2.5 is a 2-piece deal. The housing mounts to the front of the block with 2 or 3 bolts , and the pump itself mounts to the left side of the housing (with several bolts around the perimiter.) The best way to change the pump is to remove the complete housing from the block, then remove the pump from the housing while it's out of the car. The housing gasket usually goes bad, so that's why I say remove the complete housing so you can prevent future problems by replacing the gasket. Quote Link to comment Share on other sites More sharing options...
THe_DeTAiL3R Posted October 21, 2004 Report Share Posted October 21, 2004 3.1s are very easy too.. Quote Link to comment Share on other sites More sharing options...
Darksyde Posted October 21, 2004 Author Report Share Posted October 21, 2004 only other question....is the pulley a press fit or is it bolted on? Quote Link to comment Share on other sites More sharing options...
firefighter_0029 Posted October 21, 2004 Report Share Posted October 21, 2004 They are easy you take the pully off with 3 bolts and you take the water pump off also with 3 or 4 bolts. Takes about 1/2 an hour. Quote Link to comment Share on other sites More sharing options...
midnight rider Posted October 21, 2004 Report Share Posted October 21, 2004 you'll need a 10mm, a 13 mm, a 12mm and posibly a 15 mm in socket and wrench form, some plyers, a gasket scraper and screwdrivers. You'll have to remove any acessories that mount to it. Its about like taking one of a small block chevy or simular v8 and shouldn't be horribly difficult. The pulleys bolt on. Quote Link to comment Share on other sites More sharing options...
THe_DeTAiL3R Posted October 21, 2004 Report Share Posted October 21, 2004 The pully is a bit tricky if the bolts are on tight, cause it's always wanting to turn on you. Solution- losen it with the belt on  Scrape off as much gasket as you can, and its also good to apply RV Sealant (I think thats what its called.. its blue stuff) that will double protect against any possible leaks. Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted October 21, 2004 Report Share Posted October 21, 2004 The pully is a bit tricky if the bolts are on tight, cause it's always wanting to turn on you. Solution- losen it with the belt on  if that doesn't work, you can use a long nose pliers as a spanner wrench to keep the pulley from turning while you loosen the bolts. or use a strap wrench. good luck. Quote Link to comment Share on other sites More sharing options...
Darksyde Posted October 21, 2004 Author Report Share Posted October 21, 2004 awesome guys thanx alot with the help... Quote Link to comment Share on other sites More sharing options...
Darksyde Posted October 23, 2004 Author Report Share Posted October 23, 2004 1 more quick question, the serp. belt is the tensioner a 3/8 square drive or is it a bolt head? basically what will i need to remove the belt? Quote Link to comment Share on other sites More sharing options...
White93z34 Posted October 23, 2004 Report Share Posted October 23, 2004 on the 2.5 its just a 15mm that goes on the center of the pulley not sure on the 3.1 but it oughta be the same Quote Link to comment Share on other sites More sharing options...
Darksyde Posted October 23, 2004 Author Report Share Posted October 23, 2004 cool thanx alot man Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted October 23, 2004 Report Share Posted October 23, 2004 the 3.1 tensioner has a square drive. just stick a 3/8" ratchet in there and pull up (it's spring loaded). Quote Link to comment Share on other sites More sharing options...
Darksyde Posted October 24, 2004 Author Report Share Posted October 24, 2004 well the water pump was froze up solid and the belt tensioner had just plain melted into a blob, so i did the pulley and the pump in about 25 min.....thanx for all the help it was greatly appreciated. As for the list of sizes for tools, ya forgot the 8-9mm for the water pump bolts.......lucky standard sizes fit pretty close..... Quote Link to comment Share on other sites More sharing options...
DiscoStudd Posted October 24, 2004 Report Share Posted October 24, 2004 So you say there was a tensioner? Well that would make the motor a 3.1 for sure. 2.5's used a V belt around the crank, water pump, and PS pump, another V belt around the crank and AC compressor, and a "serpentine" style belt from the water pump to the Alternator... Quote Link to comment Share on other sites More sharing options...
White93z34 Posted October 24, 2004 Report Share Posted October 24, 2004 disco, later year iron dukes used a serpentine setup. all iron duke luminas used serpentine as well as my cutlass ciera did (1990). Quote Link to comment Share on other sites More sharing options...
DiscoStudd Posted October 24, 2004 Report Share Posted October 24, 2004 disco, later year iron dukes used a serpentine setup. all iron duke luminas used serpentine as well as my cutlass ciera did (1990).Hot damn! I had no idea the 'Dukes switched over to a serp belt. Now that I think about it, every 'Duke I've ever worked on were pre-89. Quote Link to comment Share on other sites More sharing options...
White93z34 Posted October 24, 2004 Report Share Posted October 24, 2004 i'm not sure exactly what year they changed over to the serp belt mabie 88'? i think 89' cieras had serp belt. Quote Link to comment Share on other sites More sharing options...
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