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Thread: putting a mechanical fan back on my 82 questions

  1. #1
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    Default putting a mechanical fan back on my 82 questions

    I want to get rid of my dual electric fans and run a mechanical fan on the car like it originally had ... Now heres the problem, I am going to use a 1984 corvette belt drive system so any ideas on what type of thermal clutch mechanical fan to use?

    If it's more hassle then just reliably getting the dual fans to work I will stick with the electric fans.

    Also originally how many blades would my fan have had and what diameter? I would actually like to use a FORD fan but don't curse me for this. I just was thinking about using a 87-93 mustang 5.0 plastic fan if it would mount up to the waterpump. Just kinda like the lighter spinning mass of the plastic fan and think it would cool better since they seem to have quite a few blades on them.

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    Quote Originally Posted by topless82vette View Post
    I want to get rid of my dual electric fans and run a mechanical fan on the car like it originally had ... Now heres the problem, I am going to use a 1984 corvette belt drive system so any ideas on what type of thermal clutch mechanical fan to use?

    If it's more hassle then just reliably getting the dual fans to work I will stick with the electric fans.

    Also originally how many blades would my fan have had and what diameter? I would actually like to use a FORD fan but don't curse me for this. I just was thinking about using a 87-93 mustang 5.0 plastic fan if it would mount up to the waterpump. Just kinda like the lighter spinning mass of the plastic fan and think it would cool better since they seem to have quite a few blades on them.

    Here is a link to the fan I am talking about.

    http://cgi.ebay.com/ebaymotors/Fan-o...mZ300263528903

  3. #3
    Moderator KANE's Avatar
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    Have you thought about a Flexlite fan? They are fairly narrow.

    You'll need to obtain an OEM shroud to get the most out of any fan.
    Previous Vettes- 1978 Black- L48 w/TPI swap, 700R4, side exhaust / 1980 Silver- L82 w/TPI swap, crate motor, side exhaust / 1997 White- Stock C5 coupe w/A4




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    Quote Originally Posted by DarkShark View Post
    Have you thought about a Flexlite fan? They are fairly narrow.

    You'll need to obtain an OEM shroud to get the most out of any fan.

    Yes I plan on locating a fan shroud for it again ..... This car will be run in summer heat in california so prefer a factory type fan that pulls a lot of air.

  5. #5
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    Default

    If that's a serpentine belt system, you'll need a reverse-rotation water pump, fan, and clutch.


  6. #6
    Moderator KANE's Avatar
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    Quote Originally Posted by JohnZ View Post
    If that's a serpentine belt system, you'll need a reverse-rotation water pump, fan, and clutch.
    John brings up a great point.

    Topless- did you use a reverse flow water pump for your car?

    If not... that could be a problem that would cause overheating. Maybe your fans are fine.
    Previous Vettes- 1978 Black- L48 w/TPI swap, 700R4, side exhaust / 1980 Silver- L82 w/TPI swap, crate motor, side exhaust / 1997 White- Stock C5 coupe w/A4




    1 of 1 Trans Am
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    ...and has back seats!

  7. #7
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    Quote Originally Posted by DarkShark View Post
    John brings up a great point.

    Topless- did you use a reverse flow water pump for your car?

    If not... that could be a problem that would cause overheating. Maybe your fans are fine.
    No it doesn't overheat at all. I just want a mechanical so I never have to worry about relays and such. I'm not overly concerned with power loss from a mechanical fan isn't like my cfi engine has any anyways hahaha ..... Just want the reliability is all.

    Yes it has a reverse rotation water pump. Which sort of complicates a fan to use. Seems like any reverse chevy rotation cars have elecytric fans which is why I brought up using a mustang fan assembly. However I don't know the original diameter of my 82 fan or whether a ford clutch will adapt to my pumps bolt pattern.

  8. #8
    Moderator KANE's Avatar
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    Quote Originally Posted by topless82vette View Post
    ....Yes it has a reverse rotation water pump. Which sort of complicates a fan to use. Seems like any reverse chevy rotation cars have elecytric fans which is why I brought up using a mustang fan assembly. However I don't know the original diameter of my 82 fan or whether a ford clutch will adapt to my pumps bolt pattern.
    I think you can use a Flexlite either way. You'll need to install it backwards for the reverse rotation. No clutch needed- they have adapter / spacer brackets.

    I think some GM trucks use a reverse rotation mechanical fan.

  9. #9
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    Quote Originally Posted by DarkShark View Post
    I think you can use a Flexlite either way. You'll need to install it backwards for the reverse rotation. No clutch needed- they have adapter / spacer brackets.

    I think some GM trucks use a reverse rotation mechanical fan.
    Not a big fan of those clutchless fans because they are noisy

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