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Thermo Fans on 5ltr GQ?

Tech Talk for Nissan owners.

Moderators: toaddog, V8Patrol

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Posts: 22
Joined: Wed Apr 20, 2005 4:20 pm
Location: Wollongong

Thermo Fans on 5ltr GQ?

Post by M.Lewis »

i have a GQ lwb with the 5.0 efi conversion and was thinking of running thermo fans
the water pump has just sh!t itself, its the 2nd water pump in the 5 years the motor has been in. im thinking maybe the spacer for the engine fan is putting extra stress on the water pump.
i dont have any heat problems so if im not happy with thermos i can always go back to the old setup.

i did a search and looks like most people run the AU twin thermo fans. a mate has a davis craig 16"?? he wants to sell me but im thinking twins would be better?

anybody got any ideas, pros and cons about what setup i should run? especially from people running the same motor?

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Post by ozy1 »

take the spacer out, and enlarge the fan cowling so it comes closer to the motor,
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Post by nastytroll »

BA thermos are better then AU from what i was told they pull more air, they have a good shroud on them n are only about 50mm smaller around then the GQ rad easy to mount
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Post by doddzee »

ozy1 wrote:take the spacer out, and enlarge the fan cowling so it comes closer to the motor,
I second that, i do not run a spacer and extended the fan cowling on mine and have not had any cooling issues.

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Post by marko »

Go the AU twin thermo, they work a treat. I race a gq with a 250kw 5ltr with au twins with a standard gq radiator with no problems. stays at 85-90degree c the whole time. $200 trade from cov's .
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Post by M.Lewis »

thanks for the ideas.

i still think ill run twin thermos, ill try find some ba or au ones this weekend.

cheers
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Post by muddymav »

just out of curiosity, MY APOLOGIES FOR HIJACKING THE THREAD MOMENTARALY!
do any people have problems with thermo fans sh*ting them selfs through water??
i have just heard mixed feedback
cheers Duane.
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Joined: Wed Apr 20, 2005 4:20 pm
Location: Wollongong

Post by M.Lewis »

yeah they dont really like water and mud


i got this from GQ/MAV bible section. it might help:

When you install OEM electric fans with the CORRECT controller ( does not have to be the Davis craid POS, ( just install 2 line temp switchs to come on at different temps), run the correct rated relays, correct wire, with a auxillary OFF switch for water work, you cant go wrong.

this is how i want to set mine up when i get around to it

but does anyone know if this affects air con??
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Location: WOLLONGONG

Post by drduff »

Hi there y'all :P

Just curious :? , just finished putting a smick 3.5ltr Rover V8 (dynoed @ 550 rwhp) :twisted: in my GU. Want to run thermo's cos i plan to comp FCUK out of it & now with all the extra Ponies under the bonnet I need an Awsome :armsup: cooling system to back it up. I realised the standard engine fan set up was drawing too many ponies from my right foot when a new Clubsport R8 blew me off at the lights yesterday. :cry:

Anyhoo, my question is what is the difference between the AU & BA fans? :?
You know how I know you're ...?
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Joined: Wed Aug 17, 2005 11:49 am
Location: NZ

Post by nzdarin »

I've got EL Falcon fans on mine. Fitt very nicly on 3 core Patrol radiator. Mine are controlled by Link ecu and have an override switch to turn them off for water crossing etc.
93 Nissan Pathfinder / Terrano Turboed VH45, GQ Trans and T-case, coil overs, hydraulic winch and fair bit of other stuff. (Currently a pile of parts in the workshop)
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Joined: Sat Aug 13, 2005 2:44 pm
Location: Perth Australia

Post by demo2 »

First off, a nice aerodinamic clubsport against ur Patrol which has the aerodinamics of a brick! no matter wat engine u got it aint ever gonna keep with a clubsport and secondly there is no way on this earth u are gettin 550 rwhp from a 3.5 rover,group "A" racing back in the 80's only just broke the 300 hp at the flywheel, i have a 5.0ltr rover and that gets 340bhp at the flywheel so not bein nasty but those figures are totally unacheivable.
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Post by chunderlicious »

demo, bhp is at the wheels, not flywheel, hence the acronym standing for BRAKE HORSE POWER
turbos are nice but i'd rather be blown
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Location: Perth Australia

Post by demo2 »

He said 550rwhp which is somewhere abouts 650 hp at the flywheel.
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GQ 5.0L

Post by sad001 »

Sorry to Hi jack, what sort of mileage are you guys getting with the Holden 5.0
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