as above really, im going to make the ac redundant, and add a more accurate water temp gauge. during this process it seems a good idea to use the existing fan, as addintional cooling. nissan wisely madethe ac fan an emergency overheat failsafe, however id like to lower the limit it cuts in at.

id be maintaining the viscous, adding a junction fitting to allow me to run the aftermarket temp gauge.

so what else whould i need and where can i purchase the parts to make this idea work.

with my Pug 406, i ran wires from the fan directly, one was the power and spliced into the earth, ran that and split it inside the cabin to a onswitch.

 

I suppose you could link it to a temperature sensor that once reaches a certain temp, sets the fan in motion. though not sure how or what system you could use for that. most likely be able to get a kit of ebay or something.

 

ive been thinking the same, really need to remove my A/C rad, had the nose panel off yesterday, and im surprised by just how much the incoming air has to travel through to get to the engine.

 

On mine its this.

 

FMIC> Air Filter(partial blocking)>Oil cooler>A/C fan>A/C radiator> coolant radiator, no wonder it heats up in the sun like we have been having. even with the bonnet lifted at the rear, its not making a blind bit of difference as it doesnt seem like it can draw the air through the radiator.

well its how alot of these after market kits that replaces viscouses work. but i want to run them together.over the top maybe, but for the few quid it would cost well worth the peave of mind.

well its how alot of these after market kits that replaces viscouses work. but i want to run them together.over the top maybe, but for the few quid it would cost well worth the peave of mind.

 

a few of the lads on the US site, removed the fan and added a twin electric from another car onto the rad, looked awesome, he said even in temps of 104F he was getting temps of 88 to 90.

 

 

fan is from a 92 maxima (us car) Z1 hose adaptor and a Derale thermo switch

 

 

Not sure if you can get these parts imported, but seems to be a big mod in the US.

Edited May 25, 201213 yr by vodkashots

Anything to improve the cooling on a ZX is good......

 

......but with the current hot weather we've been having, you want to remove the a/c? Not me - I think I'll be keeping mine as I would never have a car without it again!!

 

Richard:blush:

Anything to improve the cooling on a ZX is good......

 

......but with the current hot weather we've been having, you want to remove the a/c? Not me - I think I'll be keeping mine as I would never have a car without it again!!

 

Richard:blush:

 

its not plumbed in bud, not only that, the A/C adds to the heat, if my car isnt cooling due to all the stuff mentioned in the way, the last thing i want to do is add a hot radiator infront of a hot radiator and blow hot air on to it lol

its not plumbed in bud, not only that, the A/C adds to the heat, if my car isnt cooling due to all the stuff mentioned in the way, the last thing i want to do is add a hot radiator infront of a hot radiator and blow hot air on to it lol

 

If it's not working now then you've nothing to lose mate!! As mine works (thanks to Jeff) perfectly, it's staying....

 

.....as long as the car doesn't overheat then there's no reason for me to either!!!

 

Richard:clown:

If it's not working now then you've nothing to lose mate!! As mine works (thanks to Jeff) perfectly, it's staying....

 

.....as long as the car doesn't overheat then there's no reason for me to either!!!

 

Richard:clown:

 

To be honest im really not sure why my temperature creeps, though i really do think its the radiator. HG is definitely not blown, im not losing coolant, i have no mayo and the block test ive done 5 times, the water never changes colour.

 

Only thing i can put it down to is crappy old rad i changed when my other one was blocked, though really should of actually got around to changing it by now lol.

 

If it had A/C you do get the added benefit of having the Aux fan come on when the A/C is on to aid cooling of both radiators, and i can some what keep the temp from climbing by turning the heater on and the Aux fan from inside the car using conzults.

Would you could do is get a fan switch from a breakers......say off a v6 vauxhall vectra,calibra or omega and make up an adaptor to mount it in the bottom hose of the zed and then just wire it in.iirc the fan on those kicks in at around 80° ( iirc all vauxhall rad switches have the temp stamped on them).........but you could use the rad fan switch off most cars.

 

One interesting point is that v6 vauxhall/gm engines run hot......and have an auxillary electric waterpump that continues to pump coolant around the radiator,in conjunction with an electric fan, to reduce heatsink after the ignition is turned off.this is to draw off heat and can run up to 5mins or so after switching the engine off.i am surprised that with the heat a zed produces there isnt a similar setup fitted.

Would you could do is get a fan switch from a breakers......say off a v6 vauxhall vectra,calibra or omega and make up an adaptor to mount it in the bottom hose of the zed and then just wire it in.iirc the fan on those kicks in at around 80° ( iirc all vauxhall rad switches have the temp stamped on them).........but you could use the rad fan switch off most cars.

 

One interesting point is that v6 vauxhall/gm engines run hot......and have an auxillary electric waterpump that continues to pump coolant around the radiator,in conjunction with an electric fan, to reduce heatsink after the ignition is turned off.this is to draw off heat and can run up to 5mins or so after switching the engine off.i am surprised that with the heat a zed produces there isnt a similar setup fitted.

 

You wouldnt want to put it on the lower rad hose, as thats after the radiator has cooled the water, you would want it on the top hose so it knows how hot the engine is getting, but i understand what you are on about.

This I don't get?-your keeping the Viscous,well up to the job!-like you say,the electric fan is a 'back up' so keep it 'as is'

Only thing I would do is replace the OE fan with a Pacet or similar and mount it directly onto the Rad.

You wouldnt want to put it on the lower rad hose, as thats after the radiator has cooled the water, you would want it on the top hose so it knows how hot the engine is getting, but i understand what you are on about.

 

Of course!, my mistake :).........other option is if you have an aftermarket alloy rad is to drill a suitable sized hole in it and get an aluminium boss welded to it, tap it out and then screw in a rad fan switch, wire it all up and job done :)

 

 

On the subject of electric fans.........has anyone mounted one to intercoolers to pull air through them, was thinking along the lines of the small,but powerful, fans like you find on motorcycle radiators.

Edited May 25, 201213 yr by Rebel Scum

This I don't get?-your keeping the Viscous,well up to the job!-like you say,the electric fan is a 'back up' so keep it 'as is'

Only thing I would do is replace the OE fan with a Pacet or similar and mount it directly onto the Rad.

 

thats a good idea, id like to add the ability for it to come on though on extra hot days, especially considering ive got a FMIC.

Honesly never knew they had cooling probs. took mine for a long drive in the sun earlier this week, didnt take it easy the whole time, temp gauges never went above half way, not sure how reliable it is though. Engine never missed a beat, everything engine wise is 100% stock, popped bonnet when I got home due to PAS leak from hose, heat wasnt too bad from the engine, didnt "hit me" as I lifted bonnet so to speak.

Honesly never knew they had cooling probs. took mine for a long drive in the sun earlier this week, didnt take it easy the whole time, temp gauges never went above half way, not sure how reliable it is though. Engine never missed a beat, everything engine wise is 100% stock, popped bonnet when I got home due to PAS leak from hose, heat wasnt too bad from the engine, didnt "hit me" as I lifted bonnet so to speak.

 

ah, did we not tell you lol. unfortunatly the stock cooling is adequate. on a hot day with spirited driving or hard traffic jams it can send the zeds temp north. unfortunatly the stock water gauge is crap! basically if it starts to register a warmer than normal reading your already over heating.

fortunatly yours sounds like awell looked after motor mate, but many of us have had to do some extra work to keep the temps down.

This I don't get?-your keeping the Viscous,well up to the job!-like you say,the electric fan is a 'back up' so keep it 'as is'

Only thing I would do is replace the OE fan with a Pacet or similar and mount it directly onto the Rad.

 

yes, and essentially im going to do very much that. expect i would like to lower the kick in point. as iirc the kick in point for the eletric fan is pretty high. just wanna safegaurd the little vg i suppose its paranoia but its also a little control.

Anything to improve the cooling on a ZX is good......

 

......but with the current hot weather we've been having, you want to remove the a/c? Not me - I think I'll be keeping mine as I would never have a car without it again!!

 

Richard:blush:

 

air con is dead rich, just blows hot air at you no matter what settings you input. it also does this on econ. i think the motorised valve that closes down to control the water tempreture has had it, however its behin dthe dash and i cant be arsed to go fishing for it just right now.

Hi guys my car use to feel really hot under the bonnet, the plenum almost to hot to hold hand on it.

But would never overheat,

my viscous seemed to b working fine,

but changed it with another when done a waterpump,

 

and it seems so much more powerful,

plenum is luke warm even after long hard runs on hot days,

 

looked at a freinds z the otherday and his plenum and engine bay gets so hot.

 

I reckon a lot of our cars viscous are not kicking out what they should even though they seem to b working fine.

 

Worked on a few BMW with similar problems, when I rev mine a little with bonnet up wind is so powerful can feel it blowing all round engine bay.

 

And sounds like an aeroplane taking off lol.

Hi guys my car use to feel really hot under the bonnet, the plenum almost to hot to hold hand on it.

But would never overheat,

my viscous seemed to b working fine,

but changed it with another when done a waterpump,

 

and it seems so much more powerful,

plenum is luke warm even after long hard runs on hot days,

 

looked at a freinds z the otherday and his plenum and engine bay gets so hot.

 

I reckon a lot of our cars viscous are not kicking out what they should even though they seem to b working fine.

 

Worked on a few BMW with similar problems, when I rev mine a little with bonnet up wind is so powerful can feel it blowing all round engine bay.

 

And sounds like an aeroplane taking off lol.

 

i have a sneaky suspicion you are right there matey. my fan sounds like an aeroplane when i start it up, but soon as its warn, you cant even hear it. i have a spare clutch i might put that on and see what happens.

Hi guys my car use to feel really hot under the bonnet, the plenum almost to hot to hold hand on it.

But would never overheat,

my viscous seemed to b working fine,

but changed it with another when done a waterpump,

 

and it seems so much more powerful,

plenum is luke warm even after long hard runs on hot days,

 

looked at a freinds z the otherday and his plenum and engine bay gets so hot.

 

I reckon a lot of our cars viscous are not kicking out what they should even though they seem to b working fine.

 

Worked on a few BMW with similar problems, when I rev mine a little with bonnet up wind is so powerful can feel it blowing all round engine bay.

 

And sounds like an aeroplane taking off lol.

 

I agree also. I replaced my viscous coupling last weekend and the difference was noticeable.......

 

.......I haven't used the car since, but tomorrow I'll take it for a 200 mile round trip. With this hot weather, it should be easy to see if my efforts were worth it...

 

Richard:thumbup1:

Just a thought but the viscous fan is directly related to engine speed. So when stuck in traffic the fan is running at idle speed, which may allow the temp to creep up. Once driving though the fans speed will increase with the engine revs and help to cool.

 

So in summary, don't stop for traffic or red lights etc and keep the zed moving. Problem solved....... I think :shaun:

My fan is loud as hell, it's embarassing tbh, think the clutch is knackered. Fan on my BMW is very weak in comparison.

Just a thought but the viscous fan is directly related to engine speed. So when stuck in traffic the fan is running at idle speed, which may allow the temp to creep up. Once driving though the fans speed will increase with the engine revs and help to cool.

 

 

^ this is exactly what I've been noticing these last few days. The running temp's been fine while driving normally, but when I get stuck for a couple of minutes or more, the temp gradually creeps up (the highest it got was 194F), but within 20 seconds of driving again, the temp drops right down to a cool 170. :) Perhaps the suggestion that it would be useful to lower the temp at which the backup electric fan comes on is worth pursuing...

Well I put my spare fan clutch on and the difference was noticeable after a good drive, not only can you now hear it but the temp doesn't creep as much as before :) more testing is needed to confirm I have found my issue shame a new one is a bit ott on price

Perhaps the suggestion that it would be useful to lower the temp at which the backup electric fan comes on is worth pursuing...

 

Something like this would do the job http://www.ebay.co.uk/itm/Pacet-Capillary-Thermostat-Fan-Control-Kit-/200746984584?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item2ebd73e488. Just install in line with the backup fan and set the temp you want it to come on at. There are cheaper ones available too but this was the first I found.

 

Well I put my spare fan clutch on and the difference was noticeable after a good drive, not only can you now hear it but the temp doesn't creep as much as before :) more testing is needed to confirm I have found my issue shame a new one is a bit ott on price

 

 

Good news mate but still think you need to remove the AC rad to help flow.

 

Good news mate but still think you need to remove the AC rad to help flow.

 

Ive removed the aircon condensor from mine (along with all the other a/c gubbins) and have had no cooling issues with mine, even over the last few days.The uprated Mocal engine oilcooler may be helping, as a large proportion of engine cooling is actually done by the the engine oil drawing away heat.The one thing i am going to fit (next week all being well) is a cooling fan on the oilcooler.