Any help would be greatly appreciated.

Driving back from Ford Fair this afternoon, my water gauge was all the way to the 'N' on the gauge. I was sitting at 70mph, not giving it all hell. Ive got a cosworth fan switch, the fans are cutting in fine. I've got two mounted in front of a GRS full front intercooler.

The thing is, if I turn the heater gauge up in the car, the temp eventually drops back down to the middle of the gauge between o and r. (But I and my passengers melt from the heat in the car!)

Could it be the thermostat, or should I mount the fans inbetween the cooler and rad???

CheeRS in advance

 

Theirs your first problem!
Mount them inbetween the rad and IC

2nd you need to let the hot air escape, bonnet raisers ant the prettyest of things but will help no end! Save you having to melt everyone in the car.

And/Or you could get some bonnet louvers but i dontthink they'll help half as much as the bonnet raisers!

 

Mounting the fans on the rad will help greatly,also it mite be worth doing a cooling system flush and trying "water wetter" everyone seems to say it helps!

 

How about fixing the issue that it's overheating first.

First try a new thermostat (get an 82 degree thermostat from Christian and Beccy on here).

It could be that the intercooler is restricting too much flow to the radiator. However, wether the fans are infront of the intercooler and radiator or between the intercooler and radiator will have no bearing on the cars engine temp while cruizing. Only while the fans are running (it will take slightly longer to cool down). What condition is your radiator in?

 

i had the same on my way back from Ford Fair also and i have my fans in between my alloy rad and i/c and on an override switch, a cossie fan sender,82 degree stat and water wetter!!!! it was rather muggy today so that wouldnt have helped!! i dont like the look of bonnet raisers but am going to try them to see they help!

 

The radiator is in a fair condition I'd say, before I had the intercooler I wasn't having any problems... I've got bonnet raisers on now. Do you think it could be the thermostat? Cheers

 

Standard stats are 88 degree so an 82 degree one might help you. Give it a try first.

An aluminium radiator could help.

 

I'd stick with 1 fan inbetween the rad and cooler, shouldnt be a need for 2, 2 will block the airflow as daz mentions!



P.s. Daz - mounting his fans closer to the rad and creating an open where hot air can escape IS helping his overheating problem
what use are they blowing through an intercooler

 

there is a need for 2 fans,it's far better than with one fan!!!!!!

 

It's not helping the issue you retarded weegie!

The over heating issue is when cruizing, as in when the fans are not on. So the fact that the fans are in front of the rad either way round that you fit them makes no difference. They are still restricting flow through to the radiator!

With 1 Kenlowe fan, mine cannot cope in this weather. It's ok in winter though.

 

DazC, If when cruising the car gets upto fan on temp, the fans . . GO ON. . so cruising or not, the fans will come on and should do their job, OBVIOUSLY the cooler is blocking airflow, so the fans infront of the IC are not much use, which is why the fans are better situed inbetwen the rad and cooler, so when they come on, they blow against the rad, instead of the airflow that would normally cool it. .

so your substituting the airflow with 2 fans and the 2 fans on the IC will do fuck all roon ye

 

Dave, if the fans come on while cruizing, the car has a fault FULL STOP. The fans should come on when the car is getting to the limit of it's operating temperature threshold and this should only happen if the car didn't have sufficient air flow through the radiator. The fans are only there to substitute the natural air flow when sat in traffic. Also the natural flow of air is far greater than the fans can provide.

The fan on my own car NEVER EVER EVER comes in unless I stop and leave the car running for more than 5 minutes or is I am manouvering round a car park for example.

Retarded weegie!

 

That is an issue associated with cooling the vehicle when sat in traffic or moving at slow speeds. When cruizing, the air flow just flows directly through the cooler and the rad. The only benefit of siting the fans between the cooler and the rad is to help cool the car down quicker when in traffic or moving slowly as that should be the only time the fans are on. When the fans are off, they are nothing more than a restriction to the natural flow of air through the rad and intercooler if mounted in front of them both or a restriction to the rad only if mounted in between.

The issue is when cruizing!

 

yes i know it's when cruising, with the cooler fitted the airflow is RESTRICTED, and the fans AID the cooling, i'd say that's one of the con's of having a full front mount, it's going to restrict airflow, and the fans are going to have to do the job whilst cruising! your never gonna get a car will a full front mount that can cruise down a hot m/way on boost without using the fans unless it runs not allot of boost, and everythings in good shape and has sufficient airflow!

their are allot of things you can do to make them work less but their still gonna come on at some point!

I know fully what your saying, but your not seeing what I mean

things i'd do to aid it:

cut out as much of the bumper as you can
bonnet raisers
can get some product to put in the coolant
good water/antifreeze mix for summer
new/recored rad
wrap the downpipe in heat wrap, i know the turbo will still heat the rad up but its better than nothin
new header tank cap
stick with plastic header tank
fans inbetween rad and IC

prob more you can do but thats a start!

Could it be too much ignition advance/boost set up, as this heats the engine up far quicker/hotter when giving it some than one set up with less boost / more retard

 

No, they ARE the cooling when stationary. FULL STOP. No ifs buts or maybees! The fans cannot compete against the flow of air at 70 miles per hour. They just cannot flow enough air.

Then the rest of the cooling system isn't up to scratch.

That is a contradiction. You can't cruize and be on boost at the same time. ignoring that issue, my car has proven that wrong. I use a standard Ford rad,blocked by a full frontal GRS intercooler and a 10" kenlowe fan. Under no circumstances does that fan ever come on ever ever ever, when I am either cruizing around or thrashing it. It only ever comes on when I am moving very slowly or stopped.

When the car is stationary!!

I can't see it because an up to scratch cooling system should be able to cope with a large intercooler blocking flow at cruizing speeds! Like mine!

Only defective vehicles will end up with the fans coming on while driving.

I'm paid vast sums of money to know about and fix automotive vehicles Dave. You're arguing with the wrong person!

 

FINE

In this boys case their doesnt sound like theirs anough airflow. .

But what if your on boost S2 , 1600cvh @ 28psi with T34, rs500 cooler and a new alloy rad 2 more than upto the job cooling fans. .what then?

 

All mine has out of that list is a decent standard rad, good water/antifreeze mix and a new header tank cap.

P.S Retarded ignition creates far more heat than advance Dave. You got that bit the wrong way round.

 

Show me a car like that and i'll give my opinion on the matter!

Air flow might or might not be the issue. Difficult to tell from this end of the internet connection. But the fact still remains that the fans will still be there blocking the flow of air through the rad wether they are fitted between the cooler and the rad or infront of them both. If they come on while cruizing, it's already too hot.

Sunk in yet Dave?

 

well i must of got it the wrong way round, although was sure it was advance. .

http://66.249.93.104/search?q=cache:...k&ct=clnk&cd=5 ?

Ignition retards or needs to be retarded when it detonates, so theirfore detonation is when too advanced - detonation - heat - hot engine!


p.s. thats why i said USE ONE FAN. . les blockage. . geddit?

 

No, retard causes too much heat to be generated and absorbed into the cooling system. To much advance causes too much localised heat within the combustion chamber causing melted pistons.

Retard causes the fuel to be burnt as the piston is already traveling down the bore. The energy conversion that takes place cant convert all the energy to kinetic energy as it's already on it's way down the bore so it's converted to heat energy instead which is absorbed uniformly into the bore wall.

 

Good post...and interesting about your car DazC and you set-up....I've got a similar set-up to the Saxo.rst and I've been having problems on track.

Can you offer an opinion:

https://passionford.com/forum/viewto...781&highlight=

 

The reason your fans are coming on is the flow is in effect HALTED by the fitment of your GRS.
To cool a GRS equipped Escort the fan (one should do) or fans have to be
mounted directly to the radiator to draw the through the cooling medium.
An 82 degree thermostat will also help slightly.Alloy rads,more fans, water
wetter without moving the fan/s to the correct location will make (technical term) BUGGER ALL DIFFERENCE.

P.S.
A quote above was,-
'Only defective vehicles will end up with the fans coming on while driving.'
Which must mean my Brand New Mercedes (when started with the a/c
running) must be 'defective'........
Which kiddies goes to show the danger of making sweeping statements!

 

John,

I am a bit tired and about to go to bed in a moment as I have to get up early for a trip to London. What I will say at the moment though is that my car has never been on track yet and has only had a good thrashing on the road. It is also only running 14 psi on a standard oil cooled turbo.

When I get my new turbo on, the current cooling set up might not be good enough. As it is now though, the car runs too cool on a cruise and this causes condensation build up in the oil as if the head gasket has gone (creamy stuff in the oil). A good thrashing around and leaving it running for a bit gets rid of it though.