4drlouis wrote: How would I know the fan is going the wrong way?
Louis,
I am going to try and put it in layman's terms - your viscus fan when engaged should be sucking air through the radiator - not blowing onto the radiator. The Patrol fan can litterally be fitted the wrong way around on the viscus coupling - mine was. So if somebody did replace fan belts or took the fan off for whatever reason it is a very simple mistake that can be made.
Ja, dis nog die ZD30 radiator, alhoewel 'n nuwe een. Net vir interessantheid, die ZD30, 4.2D, 4.8 petrol en 4.5 petrol het almal dieselfde KAPASITEIT verkoelers. Die 4.8 se standaard verkoeler sit egter vertikaal en nie horisontaal soos die ander nie. Die ZD30, 4.5 en 4.2 se in- en uitlaat pype sit wel op verskillende plekke. Die radiators is in "aftermarket" beskikbaar hier in Bobbejaansberg @ ongeveer R2600 teenoor ongeveer R15000 vir 'n nuwe 4.8 radiator by Nissan.
Ek was vanaf my boerdery-dae bewus van radiators wat binne-in die "core" kan toe kalk soortgelyk aan 'n ketel wat rondom sy element kalk opbou. Ek het 'n flou swembadsuur oplossing in my ou radiator gegooi net om te toets, nadat ek die onderste pyp toegeprop het. Die spulletjie het gekook soos Enos nie kan droom om te kook nie. Dit het eerder gelyk soos 'n Draft Bier wat pas in die radiator gegooi was. Alhoewel ek nie die ontkalkingsproses afgehandel het nie, was dit vir my genoeg bewys dat die verkoeler se BINNE-KAPASITEIT redelik ingeperk was deur die kalk. Die opkalking is nie veronderstel om te gebeur in "anti-freeze" nie, maar tog gebeur dit. Dalk swak kwaliteit "anti freeze".Wat egter meer kommerwekkend is, is dat die waterkanale in 'n enjin ook kalk neerslae kan opbou. Ek dink egter dat die verkoeler se dun "pypies" dit makliker toelaat om te gebeur.
Net terloops, indien jy oorweeg om jou radiator te laat spoel met suur, haal hom heeltemal uit. en laat hom recon deur iemand soos Silverton. Blaas egter ook jou aircon radiator uit met 'n hoedruk spuit. Jy sal nie glo hoe vuil hy word nie, iets wat die lugvloei na jou hoof radiator ook belemmer. Daar kan selfs tussen die twee 'n klom vuilgoed aansamel wat nie maklik sigbaar is nie.
Weet iemand dalk van 'n manier om die waterkanale in die enjin skoon te maak sonder om hom uit en uitmekaar te moet maak nie? Toe ek my radiator laat skoonmaak het het hulle my gese dat iemand "stop leak" ingegooi het, en daar is blykbaar 'n kans dat dit van die kanale kan verstop ens?
Nee, ongelukkig is ek nie seker nie. Ek glo egter dat die "Silvertons" van ons wereld die engine behoort te kan spoel net soos hulle 'n verkoeler self spoel....???
I am having heaps of Sh1t trying to solve my heating problems,
new head
new radiaotor,
new MAF
new pipes.
have not changed the Water pump, and all the fans come on at the right time, but it is in traffic, that temp goes from 80dgrees c to 95 96 ...ooo
btw, i dont buy the story about te fan obn the wrong way - IMPOSSIBLE - think about it - the blades still face the same way even if you turn it around, - IMPOSSIBLE!.
If you look at the fan, you will see the blades are curved. The curve is designed to catch air that is virtually at a standstill, and accelerate it through the radiator. If you turn the fan around, the curv works against you and airflow is reduced significantly.
Have you cleaned the air-con radiator? if it is blocked, air may not get to the radiator?
Irfaan, Peter is spot-on - your observation is correct only for flat bladed fans. When they are curved, it does make a difference if they are mounted back-to-front!
I also had some over-heating issues that were greatly reduced by fitting a genuine (i.e. from my local Nissan dealer) thermostat. The Nissan part had the same temperature rating as the after-market one that was fitted before, but for some reason it made a difference. On a diesel (you don't mention what you drive) you also need to make sure that your fueling and timing is spot-on.
BTW: I know what the ME summers get like... I once drove from Dubai to Abu Dhabi in mid-summer in a black car without AC and only just lived to tell the tale! I was really hoping that some of the guys who live there could teach us how to keep our cars cool in summer?
Christo (the snake man)
1998 4.2 GL Patrol (Chuck Norris)
2007 350Z twin-turbo coupe (Batmobile)
Yes,the blades stay at the same pitch or angle.If the blades were straight it would make no differance.But in this case the blades are concave,so if you fit the fan wrong the pitch will be the same but the concave or dish will face the other way and it will not be effective.Just like Peter explained.So becarefull for IMPOSSIBLE ,maybe that's your overheating your are looking at it but its impossible.Before you change more parts,change your mechanic.
