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Clutch fan with spacer?

Discussion in 'The Garage' started by AZ_Overdrive, May 25, 2005.

  1. AZ_Overdrive

    AZ_Overdrive 1/2 ton status

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    A quick question here.

    I upgraded the 89' Burb to the 4core radiator swap (454 shroud) and now the fan blades are about a 1/4 inch from the shroud.

    So, my question is, if I put a 1" spacer on the clutch fan to get it tucked nice and neat inside the shroud will that cause any problmes with the thermal clutch?

    The spacer is made of allum. I wouldn't think so but I just wanted to be sure.

    Thanks for any help!
     
  2. mrk5

    mrk5 The Sticker Guy Moderator Vendor GMOTM Winner Author

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    That's how my setup is. Been like that for a year now, probably 5000miles, and I haven't had any problems pop-up yet.
     
  3. AZ_Overdrive

    AZ_Overdrive 1/2 ton status

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    mrk5,
    Thanks for the info. I will go with the spacer and see how it works out.
     
  4. diesel4me

    diesel4me 1 ton status Premium Member

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    not more than 1 inch!

    I tried using a 2" spacer with a clutch fan--it caused the water pump shaft to snap flush with the case of the pump when I got my truck stuck in a snowbank,and had to race the motor up a bit to rock it out,sending the fan into the radiator and hoses! :mad: ...I'd say 1 inch spacer might be ok,but 2"--dont do it!...there is a lot of weight to a fan clutch and blade assembly,and they dont like being too far away from the mounting flange on the water pump,or they will start wobbling,and that leads to disaster... :crazy:
     
  5. 4XSlave

    4XSlave Registered Member

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    Eliminate the need for spacer and shroud by installing an electric fan. I got one with two 10 or 12" fans from summit and it helped drop the temp on my 83 fullsize.
     
  6. sweetk30

    sweetk30 professional hooker Premium Member

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    clutch fan is heavy unit. and the fan blades are to be about flush with the shroud. this is with themm all the way in the shroud. keep a eye on the setup with the spacer. radiators arnt cheep anymore.
     

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