----- Original Message -----
From: Mitwelt
To: Maycinc@cs.com
Sent: Thursday, August 29, 2002 7:22 AM
Subject: Re: Cooling
Yea, I suspected the larger fan would hit at the bottom, OEM does this alot
b/c the angle of the motor to the shroud on 75s. Flex-a-lite makes a 17"
Steel/Alum non-flexing "race fan", something like P/N 1717p? or very close.
I can't remember the size of the spacer I used, I believe it was either
2-2.5" alum.. If you get at local supplier, you can always return. Like I
said, the mech fan is not gonna rob that much of the HP, it's just not that
big. Flex fans are not great, besides coming apart, the don't move enough
air, coupled with a clutch, they become even less sufficient since you now
have both a temp and an inertia dampener. This may be the problem of poor
temp control. Finally, I used a switch that threads right into the t'stat
housing. It is for an elec water pump and rated very high although using a
HO relay is still a good practice. Summit and JEGS have these. Never liked
the strap on t'stats, besides looking cheesy, they don't worth a damn and
the relays included with elec fans are crap.
stephan
----- Original Message -----
From: Maycinc@cs.com
To: mitwelt@bellsouth.net ; bricklin@autox.team.net
Sent: Thursday, August 29, 2002 12:11 AM
Subject: Re: Cooling
Stephan,
After I looked at it a little more, the spacer is actually the shaft of the
clutch so changing it is out of the question. It appears that the only way
to move the fan back toward the engine (and get 1/2 of it out of the shroud)
would be to get rid of the clutch all together or find a clutch with a
shorter shaft (mine is 1-1/2"). I tried a 18" flex fan and it scrapes the
bottom of the shroud so I'm going to look for a non-flex, non-clutch 17"
fan.
Marvin
In a message dated 8/27/2002 8:07:56 PM Mountain Daylight Time,
mitwelt@bellsouth.net writes:
So, are you using the clutch and spacer?? If you are, I would recommend
removing the clutch. It robs little in the way of actual HP and keeps the
fan running at full cap even at high speeds where the B oddly needs it.
Flex-a-lite makes lots of fans too. Their 17" steel/alum race fan
(non-flexing) is a good choice. An 18" would be better, but alignment can
be tricky on 75s. You may want to check out the blade position around the
entire circumference to see that it is even. The engine is tilted back from
the radiator. You can always add spacers to achieve a more uniform delta.
So, there ya have it. Please feel free to write me anytime.
Hope this helps,
stephan
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