extreme overheating thread #2

redskin · Post by **redskin** » Thu Aug 02, 2007 3:07 pm

Does your heater work well? if not, have you checked the heater core for blockages. These cores can also when blocked or restricted cause overheating. To check, disconnect hoses at firewall and using a suitable pipe join them together and bypass the heater core. You will know for sure after you drive it but it sounds as though you have looked at everything else, if this doesn't cure it and have not already done so, do a compression test.

Too Many Rubes · Post by **Too Many Rubes** » Thu Aug 09, 2007 6:54 pm

I wouldn't chuck the viscous/clutch fan. I'd replace the clutch in it and possibly fit some shrouding. A good engine driven fan will suck a ****load more air than a cheap lecky one, especially at high rpms under load, such as on soft sand.
An engine oil cooler would be nice on a turbo'ed donk too.

Matatak · Post by **Matatak** » Thu Aug 09, 2007 9:12 pm

Too Many Rubes wrote:A good engine driven fan will suck a ****load more air than a cheap lecky one, especially at high rpms under load, such as on soft sand.
An engine oil cooler would be nice on a turbo'ed donk too.

i beg to differ
they are designed as that placticy crap so that at the high RPMs they bend flatter hence not as much drag on the engine hence not sucking as much lol

but to late its not there nemore and i reckon it shuld be working more efficiently with the leccy one as it has a shroud and trying to fit one to the clutch fan wuld be a waste of time and his effort lol (and that electric one was blowing a sh**load when we tested it out before we put it on)

but th eoil cooler may be a good idea i once heard that its one of the first things that shuld be put on a turbod car when its used for drifting

Post by **Alex** » Thu Aug 09, 2007 9:18 pm

i think he put the clutch fan back on actually. I agree with Too many Rubes, i definitely think the original clutch fan would blow a **** load more.

But i also think he has semi-sorted it, rarely does the secondary fan come now.

alex

discopotato03 · Post by **discopotato03** » Thu Aug 09, 2007 9:21 pm

Yep , thats because hard worked engines (turbo and NA) don't get the airspeed through the cooling system to remove the heat . Most road cars don't get worked that hard for long enough to overheat the oil so its generally not a prob for them .

Matatak · Post by **Matatak** » Thu Aug 09, 2007 9:21 pm

well wats tha gossssss

wt did he doooo

Subafury · Post by **Subafury** » Thu Aug 09, 2007 11:05 pm

well for the past week i have kept the 2nd eleccy fan on (around the right way this time). and also taken thermostat out. ive found i dont even need the 2nd leccy fan on in normal driving. car takes about 5-10 mins to warm up so its still pretty normal. cant wait to test in some nice pines sand with alex n brendans n matt's cars too. hint hint.

oil cooler does sound good too.

Too Many Rubes · Post by **Too Many Rubes** » Sun Aug 12, 2007 1:15 pm

I'd be putting a NEW thermostat back in it. Running no thermostat can cause all sorts of problems-
Excessive engine wear.
Poor fuel comsumption.
Rich running/fouled plugs.
Catalytic convertor damage.

All not very nice things......

The turbo should have an oil feed line - perfect for putting an oil cooler inline with. $50 on eBay. Turbos hate hot oil...

Subafury · Post by **Subafury** » Sun Aug 12, 2007 6:47 pm

i seem to have rectified my overheating problem- having the fan blades on the right way for starters and the second thermo fan makes a big difference. might put the thermostat back in l8r tho n see how it goes.

only got hot once last night in the sand after about 4 soft hill climbs in a row

to be expected i would think

Matatak · Post by **Matatak** » Sun Aug 12, 2007 7:21 pm

lol yes

i want a guage like u got for temp works (and looks) heaps good and better than nothing atm lol

Subafury · Post by **Subafury** » Wed Dec 05, 2007 10:36 pm

just to dig up my old thread. car has still been overheating whilst offroading ie low speeds for the last couple months. i was getting prepared for a headgasket jobbie BUT got the radiator and cooling system checked out today and there was a little gunk but not too much after a pressure flush, HG tests were done but no signs of it blown. the only other thing they did was say that the cap was worn. their suggestion was bigger and better fans. so we'll see what happens on the next 4x4 trip.

ScoobieDoob · Post by **ScoobieDoob** » Fri Dec 07, 2007 12:25 am

I have had much the same problem with my Sube running too hot, to get to where i work i have to travel 8 ish k's up a reasonable inclined dirt road, it was overheating like a bastard so as a temp fix i fitted an air-con condenser from a VC Commodore and plumbed it in from the heater tubes, Result: hey presto no more overheating! in fact it worked so well that the blasted thing stays cold until i start to climb said hill, then it jumps to the mighty level of 1/4, also as a small side effect the fuel mileage has gone out the window....