Replacing Cooling Fan Clutch - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 01-04-2006, 07:47 PM
Slant3's Avatar
84 Mutt
 

Last journal entry: Steering column
Last photo:
Join Date: Aug 2002
Location: Long Island
Age: 43
Posts: 275
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Replacing Cooling Fan Clutch

What clutch unit would you recommend for a 400 hp 400sb? The Non-Thermal clutch or the thermal??? I mostly cruise it in town with an ocasinal spin on the local expressway. Stall is around 2200rpm and on an average day of 80* , the temp chills around 185-190 with a 180 t-stat.I am looking to rid of the P.O.S. flex fan. THX---

p.s. Happy "late" New Year All
p.p.s. I have an 84 cutlass and just installed SS pulleys on it. I was wondering --Do I just get a standard fan or does it have to be reverse rotation???? That always messes with my head Sounds stupid when I re-read it. LOL

    Advertisement

Last edited by Slant3; 01-04-2006 at 07:54 PM.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 01-04-2006, 09:31 PM
Jmark's Avatar
Registered User
 
Last photo:
Join Date: Sep 2003
Location: phoenix
Age: 61
Posts: 4,808
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
Non-thermal clutches are, in my opinion, not worth the wasted money. They usually spin up way too much and stay spinning all the time. Spend some money and buy a brand name thermal clutch. Use the stock GM fan that goes with it too, can't beat em.

Mark
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 01-04-2006, 09:56 PM
Slant3's Avatar
84 Mutt
 

Last journal entry: Steering column
Last photo:
Join Date: Aug 2002
Location: Long Island
Age: 43
Posts: 275
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thank You Jmark. Now I gotta find that old fan in the shed.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 01-05-2006, 02:23 AM
curtis73's Avatar
Hates: Liver. Loves: Diesel
 
Last wiki edit: How to find cheap parts
Last journal entry: 1999-2001: Getting it on the road
Last photo:
Join Date: Dec 2005
Location: Pittsburgh, PA
Age: 40
Posts: 5,128
Wiki Edits: 16

Thanks: 0
Thanked 2 Times in 2 Posts
I completely agree. I would also avoid the "heavy duty" thermal clutches. They are so viscous that they drag almost all the time. They are basically TOO viscous in an attempt to overcool an engine in a heavy duty application. I have one on my 454 and its a pain. There is almost never a time when its NOT locked up.

A good GM thermal clutch is your best bet. Period.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 01-05-2006, 06:38 AM
tornado-tech's Avatar
Member
 
Last photo:
Join Date: Aug 2004
Location: Kansas
Age: 47
Posts: 320
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I would go with a thermal clutch if you really want a clutch fan but a word of advise. Be careful if you have to space the fan out to get it closer to your radiator and in the fan shroud. I had mine spaced out 2 inches and the bearing in the water pump let go completely taking out my radiator. I found out from other people that the extra weight of the clutch fan especially being spaced out causes much more stress on the bearing due to a leverage factor. I eliminated mine and went with a dual electric fan set-up. It heats up quicker now and stays just as cool as with the clutch.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 01-08-2006, 02:59 PM
Slant3's Avatar
84 Mutt
 

Last journal entry: Steering column
Last photo:
Join Date: Aug 2002
Location: Long Island
Age: 43
Posts: 275
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thats my case. I have to space it at least 2 inches. That is how the flex is on there now. Can I still use my aluminum spacer that I am using for the flex?
I don't like the fact that your bearing failed due to leverage factor.My pump is about 5 years old. Thats something that'll be burned in the back of my head. Waiting for it to let loose.
Attached Thumbnails
Click image for larger version

Name:	DSCN1151.JPG
Views:	82
Size:	79.4 KB
ID:	9045  

Last edited by Slant3; 01-08-2006 at 03:07 PM.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fan Clutch Bad After 400 miles? Ghetto Jet Engine 10 04-02-2005 09:21 PM
Clutch Fan malibuman66 Engine 18 01-01-2005 10:09 AM
New fan clutch bad? DoubleVision Engine 7 08-23-2004 06:04 AM
electric fan or clutch fan?? mancinator Engine 4 06-02-2004 02:49 PM
Using a spacer with a fan clutch sixty5 Engine 5 07-30-2003 11:00 PM


All times are GMT -6. The time now is 07:13 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.