Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 911 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
cycling has-been
 
bkreigsr's Avatar
 
Join Date: Sep 2004
Location: Jersey Shore
Posts: 7,238
spal fan - push or pull?

I'm about to order the parts I need for the fan install and have read most of the threads that deal with the upgrade.

question: why is the push fan recommended vs the pull fan?

wouldn't it make sense to pull from the dead air space around where the horns were, rather trying to push air into that space?

...unless the fan is mounted on the horn side of the cooler, or is that the normal mount location?
our host sells the factory install kit which includes horn relocation bracket, which leads me to believe the factory mounted it on the horn side. ...was the factory push or pull?

now I'm thinking that a pull fan mounted on the tire side is the way to go.

opinions.....rational?

thanks

Bill K

__________________
73 911T MFI, 76 912E, 77 Turbo Carrera
Old 11-08-2005, 06:12 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered
 
Early_S_Man's Avatar
 
Join Date: Dec 1999
Location: TX USA
Posts: 9,804
Send a message via Yahoo to Early_S_Man
Porsche Crest

Most people say there isn't enough room between tire and cooler stone shield for a 'pull' type fan ... YMMV!
__________________
Warren Hall, Jr.

1973 911S Targa ... 'Annie'
1968 340S Barracuda ... 'Rolling Thunder'
Old 11-08-2005, 06:23 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
cycling has-been
 
bkreigsr's Avatar
 
Join Date: Sep 2004
Location: Jersey Shore
Posts: 7,238
thanks, I'm guessing my 930 is no exception to the clearance issue, so I guess it makes sense to mount it away from the tire and all the tossed around debris anyway. a couple of rubber worms from the track would probably render it useless in no time flat.
so I'll go with a pusher on the horn side
__________________
73 911T MFI, 76 912E, 77 Turbo Carrera
Old 11-08-2005, 06:41 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered
 
Join Date: Aug 2002
Location: Galivants Ferry, SC
Posts: 10,550
Factory is pusher...mounted on the front face of the cooler....that's how I mounted my 7.5" SPAL fan too.

Wil
__________________
Wil Ferch
85 Carrera ( gone, but not forgotten )
Old 11-08-2005, 07:38 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered
 
dandrews64's Avatar
 
Join Date: Jun 2004
Location: Sonoma County, California
Posts: 478
Bill, 7.5" pusher mounted on Horn side.

PM me your email address and I'll share pics with you (PM box now cleared out)
__________________
Doug Andrews
1982 911SC Targa
2008 Silverado Duramax 3/4 ton
2004 Armada
1999 Honda XR400
Old 11-08-2005, 07:53 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered
 
Join Date: Dec 2004
Posts: 770
Just finished my fan install on my turbo yesterday. 7.5" Spal pusher on the front(horn) side. Horn relocation was necessary but easy.
Old 11-08-2005, 07:25 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
cycling has-been
 
bkreigsr's Avatar
 
Join Date: Sep 2004
Location: Jersey Shore
Posts: 7,238
OSI930...

did you go with the thermostat on/off,or a manual switch?

thanks

Bill K
__________________
73 911T MFI, 76 912E, 77 Turbo Carrera
Old 11-09-2005, 03:02 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered
 
Join Date: Jul 2005
Location: Midlothian Texas about 20 miles south of Dallas.
Posts: 145
Garage
Question

I'm just days away from switching out my trombone for a mocal unit and a fan man spal fan. I also ordered the thermostat and switch kit. I'm not sure where to install the thermal switch?

Could someone point me in the right direction---
BTW it will be on a 81 911 SC

Mark
__________________
1981 911SC Sunroof Coupe
2005 Volvo XC-90 2.5T
Vans RV-8 Experimental Aircraft
Old 11-09-2005, 04:51 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Registered
 
Join Date: Dec 2004
Posts: 770
I went with a manual switch for now but left everything set up to add a thermostat later if I choose to. I watch the oil temp gauge quite a bit so I will see how I do with a manual switch.
Old 11-09-2005, 05:24 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
cycling has-been
 
bkreigsr's Avatar
 
Join Date: Sep 2004
Location: Jersey Shore
Posts: 7,238
OSI930;
please keep us posted as to how the manual switch works out. also interested in noise levels while idling in traffic.
where did you get the 4 prong relay?
thanks
Bill K

Grezdlitn : give dandrews64 a shout, he has been very helpful with advice & detailed photos.
__________________
73 911T MFI, 76 912E, 77 Turbo Carrera
Old 11-09-2005, 05:58 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Registered
 
Join Date: Dec 2004
Posts: 770
The noise level is not bad. It is not as loud as a late model car equipped with an electric fan on the radiator. I used a factory relay socket and relay and placed it in the opening where the cruise control would be if equipped.
Old 11-09-2005, 06:54 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
Information Junky
 
island911's Avatar
 
Join Date: Mar 2001
Location: an island, upper left coast, USA
Posts: 73,189
Re: spal fan - push or pull?

Quote:
Originally posted by bkreigsr


question: why is the push fan recommended vs the pull fan?

wouldn't it make sense to pull ....
Mixing.

(usually) A push will stir the air (better) causing more tumbling of air over the surfaces needing cooling.
__________________
Everyone you meet knows something you don't. - - - and a whole bunch of crap that is wrong.
Disclaimer: the above was 2¢ worth.
More information is available as my professional opinion, which is provided for an exorbitant fee.
Old 11-09-2005, 07:10 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)
 
cycling has-been
 
bkreigsr's Avatar
 
Join Date: Sep 2004
Location: Jersey Shore
Posts: 7,238
if mixing is the case would you recommend on the the "twisted" fans now offered by SPAL?
__________________
73 911T MFI, 76 912E, 77 Turbo Carrera
Old 11-09-2005, 07:21 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #13 (permalink)
Information Junky
 
island911's Avatar
 
Join Date: Mar 2001
Location: an island, upper left coast, USA
Posts: 73,189
I'm not familiar with the performance (fan curves) of the SPAL. They do seem to make a rugged package. Whether the blades are curved-back (twisted) or not, I doubt will make much diff' in over-all performance.
__________________
Everyone you meet knows something you don't. - - - and a whole bunch of crap that is wrong.
Disclaimer: the above was 2¢ worth.
More information is available as my professional opinion, which is provided for an exorbitant fee.
Old 11-09-2005, 07:38 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #14 (permalink)
Registered
 
Join Date: Feb 2002
Location: Van Nuys
Posts: 10,446
Garage
Push- most definitely! Why? How would the electric fan motor fare with 250-280 degree heat being blasted on it whenever the car started getting hot ? Won't last long and the plastic construction will get brittle a lot faster
Move the horns around to make space for the fan up front- it will be more efficient and reliable
__________________
1970 914-6 street"evil cockaroach"
1970 911 Targa "ST"
Jade Green IROC Tribute (ready to race)
Old 11-09-2005, 08:36 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #15 (permalink)
Registered
 
Join Date: Aug 2002
Location: Galivants Ferry, SC
Posts: 10,550
The curved fan blades simply are for quiter operation....just like the 964/993 fan blades compared to originals.....may even flow less....

Wil

__________________
Wil Ferch
85 Carrera ( gone, but not forgotten )
Old 11-10-2005, 10:38 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #16 (permalink)
Reply


 


All times are GMT -8. The time now is 09:30 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.