BlueZ31 Posted August 30, 2008 Share Posted August 30, 2008 Okay, ive installed a NisMO t-stat (62c) a larger radiator, new waterpump, and pretty much everything associated with the cooling system, yet it still runs at about 190', i really figured that changing all this would at least drop the temps a little, especially the 150' thermostat compared to the old stock 171', and theres no obstructions on or near the radiator that could be blocking airflow. Im just trying to get it a bit cooler in preparation for a hotter (much) ignition and possibly some boost down the road, any reason why it would still stay at its original operating temp? Quote Link to comment Share on other sites More sharing options...
tonycharger72 Posted August 30, 2008 Share Posted August 30, 2008 Hey mate, I had an RB30E in my Zed, used the stock 1974 Radiator (smaller one) and 16" thermo fan (cheapy off EBAY) worked fine - then I slapped a turbo on the side and it boiled!!! Started with installing a better radiator (3.2L V6 4x4 Holden Rodeo Radiator) that helped, not fixed, Re-located the intercooler as far forward and as far out of the path of the radiator as possible (no difference), I changed the thermostat and water pump for genuine items, no help there, I removed the 16" EBAY thermo fan and purchased a SPAL 16" - this finally got the car under control - SORT OF!!! If I got stuck in heavy traffic, car would cook - the second I got the car about 15-20km's an hour the temp would fly down, Therefore issue was moving the water at low RPM's - Thermo was just not doing its job effectively!!! So there are two possible solutions, 1 - Install the stock engine fan and make a shroud - this should fix all 2 - After step 1 and it still wont cool (which it should) install an electric water pump, not cheap, but that will do it!!! RB's need that engine fan mate, for the good it did I may as well not have even had an Thermo Fan, engine only kept cool when I was able to push 15-20km's/hr or more of air through the Radiator - without the Stock Engine fan you will struggle to move enough air through the radiator to keep your engine cool!!! Quote Link to comment Share on other sites More sharing options...
Canadianz Posted August 30, 2008 Share Posted August 30, 2008 What engine and mods are you running ? if you give us some more info it will be easier to figure out whats up. My Rb25det runs at around 150f return temp max if im in traffic. Thats through a big V-8 rad with a small electric fan. Quote Link to comment Share on other sites More sharing options...
BlueZ31 Posted September 1, 2008 Author Share Posted September 1, 2008 ooops, forgot to mention its a vg30(e), the radiator is larger than stock, and the fan itself is pretty sufficent, ive came to the conclusion that its the guage itself, because while the cars running it constantly reads at about dead center (around 190') but immediatly after turning the engine off and then putting the keys in accsessory the guage shows around 150-160'....kinda strange but stock guages (especially 20+ year old ones) are know to be alittle off so maybe this is the reason. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.