Over Heating Problem

[BD's R32]

G'day,

I recently brought an R32 off of a friend of mine and have now had it for just a week. Its an awesome car seeing as my last car was a 1977 torana (not that there was anything wrong with that car) but this has a lot more power and is a lot more newer which is good.

It has some mod’s being boost controller running the turbo at 1 bar, air/fuel controller, intercooler, turbo back exhaust, turbo timer and air filter.

I’ve was driving it around a fair bit but a few days ago i found that after driving it for a bit and returning home, the overflow bottle was bubbling and the car was pumping out a fair bit of heat. I just thought that because I had been driving it for a bit it might have gotten hot so I left it running for a few minutes to cool then shut it down. However the next day diving to a mates not driving hard, it did the same thing. I have since been to the mechanics and he replaced the thermostat and the Fan coupling and pressure tested the radiator thinking that being the problem but after driving it today and only pushing the car a little the temp gauge started to rise to the high. I backed off and let it cool and it did settling at the half way point and not moving too much from there only if I pushed it a little it would slowly start to climb again.

Apart from doing a coolant change im pretty stuck on what the problem is. I have thought of getting the boost turned down as that too might have been the problem.

I was just going to see if this might be a problem or people with similar moded cars were having similar problems?

I haven’t owned a car like this before so I am uncertain on what is and isn’t normal so any feed back would be much appreciated.

Cheers

-BD

[Craved]

try a coolant fluch and clean the radiator..

while doing that look into the radiator.. if there is heaps of rust muck in there.. if there is you might need to get it replaced or professionally cleaned out.. (try a DIY flush first maybe)

are you losing much water? also a mechanic can do a check on the radiator for exhaust gas to test the head gasket.

process of elimination unfortunately.

[GTRNUR]

How do you check for exhaust in the radiator? I'm having the same problem. It appears the car gets hotter at night than it does during the day which is even wierder? Or it might be that I aren't driving it as hard during the day possibly...

I'm actually thinking water pump now, as i'm not sure it was replaced at the 100,000k mark.

[Cooper]

^^^ My GTR was doing a very similar thing, i couldnt drive it for more than 5 mins normally without the coolant boiling, turns out the raditor was 80% blocked so i got a new one. Get your radiator check out by a mechanic if its to far gone get a new one.