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Is it necessary for the well being of an 80 TR7 that the fan only run part of the time? I continue to have a problem with noise from the clutch and was wondering if I could afix the fan to the pulley so it would run all the time. This should eliminate the clutch noise and the 7 would run cooler as well. Your thoughts will be appreciated. THANKS[:)]

Grant, I'd not take too long with that fan. If it's the bearing,
they tend to come to bits, & have the fan take off, through the
radiator.

With a driect drive you would have many problems. To give the same
cooling at low revs, you would need a similar sized pulley. With
such a pully, the fan would be reving so fast, when the engine hit
4000 or 5,000 RPM it would fly to bits. There was a photo here
recently of a bonnet, after a fan blade failure.

Perhaps a thermo fan, if you can't repair the existing unit.

Hasbeen

Electric fan mounted behind the radiatior w/adjustable rheostat/sensor. A rather large fan will fit behind radiatior and at road speed in all likelyhood forced air cooling will be sufficient. My $.02 worth. I run a front mounted fan 14 in dia, works fine.

Cliff

Hasbeen, Cliff-

Thanks for your help. This is the info I needed to keep me from making a huge mistake.

Continuing to learn!
Thanks,
Grant[:)]

Repairing fan clutch

1. Remove the fan shroud.
2. Remove the four bolts that hold the fan to the coupler. Hard to get a hold of bolts with wrenches. You can remove the assembly with out taking off the fan, but you must be careful of radiator.
3. Loosen the alternator holding bolts, slacken the belt and remove.
4. Loosen the 4 bolts holding the fan assembly to the block, remembering which bolt goes where. One bolt hidden behind the pulley.
5. As you loosen this bolt last, pull the assembly away from the block.
6. Remove assembly straight up from block.
7. Put the assembly in a vice held by the block face. (Remove the fan if it was not removed earlier.)
8. Using a three hook puller, put the hooks behind the viscous coupler and alight the center drive screw of the puller with the center of the coupler shaft.
9. Use impact drive to turn the center screw to remove the coupler.
10. Remove the sleeve from the end of the shaft.
11. Clean shaft well.
12. Remove the pulley assembly from the vice and reinstall it on the vice with the shaft pointing straight up.
13. CAREFULLY place a new sleeve onto the shaft WITHOUT deforming it!
14. Place the new viscous coupler on the shaft in the proper direction. DO NOT PUSH IT DOWN!
15. Hold the sleeve in place on the shaft and carefully use a rubber mallet to start the coupler down on the shaft. Be careful that the sleeve stays in the groove!
16. Once the coupler is started well and the sleeve is still in its groove, use a socket and hammer to drive the coupler home.
17. Carefully align the pulley assembly with the block and start the hidden hole. (If the bolt falls out use a magnetic wand to hold it with the shaft vertical and the head down, slip it into position and have some one with very small fingers, push it up and into the hole, then have them start the bolt.)
18. Replace the other three bolts and tighten all four.
19. Reinstall the fan belt and tighten the alternator in position
20. Reinstall the fan.
21. Reinstall the fan shroud.

Clay-
Thanks for your help. I will give this a try.

Glad you are back[:)]
Thanks
Grant