280Z Turbo Posted May 6, 2006 Share Posted May 6, 2006 I recently got an electric fan, but I didn't have very much clearance between the P/S pulley and the shroud. I want to remove the P/S pulley, but on the 1981 turbo, the P/S pulley and A/C pulley together make up the damper itself. Could I shave off the P/S pulley or would that comprimise the damping ability of the damper too much? Quote Link to comment Share on other sites More sharing options...
Hugh Posted May 7, 2006 Share Posted May 7, 2006 There's no way to move the radiator forward a little? How thick is this fan you're putting on? Quote Link to comment Share on other sites More sharing options...
280Z Turbo Posted May 7, 2006 Author Share Posted May 7, 2006 How could I move it forward?! It's flush up against the crossmember. It's 4" thick. It's not the thickness of the fan that's the issue, it's the poor design of the shroud. It's tapered to the back of the motor. Quote Link to comment Share on other sites More sharing options...
Workinprogress Posted May 7, 2006 Share Posted May 7, 2006 Put on a single groove damper Quote Link to comment Share on other sites More sharing options...
Hugh Posted May 7, 2006 Share Posted May 7, 2006 I'm trying to understand "tapered to the back of the motor" Is the shroud part of the fan? Can you run the fan without the shroud? I would just run a slimmer fan than trying to shave the pulley.. to keep it simple. Quote Link to comment Share on other sites More sharing options...
280Z Turbo Posted May 7, 2006 Author Share Posted May 7, 2006 I won't run one of those Euro dampers because they are prone to failure and they don't have provisions for a 1981 CAS. What I mean is that the shroud isn't as flat as others I have seen. If it was flatter, there wouldn't be a problem. I already paid $80 for the fan, so I'm not going to just ditch it. It's one from Summit: Quote Link to comment Share on other sites More sharing options...
Synlubes Posted May 7, 2006 Share Posted May 7, 2006 Could I shave off the P/S pulley or would that comprimise the damping ability of the damper too much? I cut the outer pulley off a "test pulley" and it worked well. After doing my low tech test, I would recommend. . . Start with a brand new pulley Take it to a machine shop and have them remove the outer groove using a milling machine. Make sure they cool the part as it is cut to keep from melting the rubber insert. Have the pulley balanced after the first groove is removed. Quote Link to comment Share on other sites More sharing options...
73GreeNMachine Posted May 9, 2006 Share Posted May 9, 2006 On one of my old balancers i could remove the powersteering pulley. I would take a look to see if you can do it to yours. There should be about 6 little (10mm) bolts that bolt into the other two pulleys. You will HAVE to get it rebalanced after taking the PS pulley off though. Quote Link to comment Share on other sites More sharing options...
olie05 Posted May 9, 2006 Share Posted May 9, 2006 73 green machine is right. The 3 groove pulley I had, the PS groove was removable, with the bolts. Check to make sure your bolts aren't covered in dirt and oil. Quote Link to comment Share on other sites More sharing options...
280Z Turbo Posted May 10, 2006 Author Share Posted May 10, 2006 Nope the 81 turbo crank pulley is kinda dumb that way. The A/C and P/S pulleys ARE the damper and the alternator/water pump pulley is mounted behind. I don't really want to buy a brand new 81 pulley and chop it up. It seems to me that there are better options out there at that price. Quote Link to comment Share on other sites More sharing options...
Synlubes Posted May 22, 2006 Share Posted May 22, 2006 Here are a couple pics of the pulley I modified. (see earlier post) I simply used a hacksaw but recommend using a milling machine. No motor in my car so the pulley was never run, but I would not have any problems doing this to a good or new pulley. * note * this was just a test pulley to see what the outcome would be Quote Link to comment Share on other sites More sharing options...
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