Well, I think I've finally got the dreaded BHG. I have an 86.5 NA Supra, 138,000mi, and a few weeks ago it started overheating, and every time I saw the temp guage rise I would pull over and let it sit for a while. I replaced the thermostat, radiator cap, and then the radiator and it was still doing it. Then one day I was driving down a highway with no shoulder so I couldn't pull over when it started to overheat, so I just tried to make it to a place to pull over, and after a bit the temp dropped back to normal, and the temp would jump up and down every couple minutes, and after driving for a while my overflow container would be full. Then I thought it was just air trapped in my cooling system because I recently flushed my coolant, so I tried parking on a hill and letting it run for a while, and the bubbles just won't stop coming... I just don't know what else it could be.
Think I've got the BHG...
- Thread starter Playnine
- Start date
I don't know if it was actually overheating or if the temp gauge was just spiking up because of the air in the cooling system
The stock temp gauge doesn't react as quick as your engine heats up. In other words each time you saw in about to get real hot, It already was real hot. On a good note now you can strip it down and build a 500hp monster! :icon_wink
I know the feeling. If you don't know already: you can put the heater temperature in your car on 85 degrees and turn the fan on high. This will help the overheating when the gauge is in the red. Not great in hot weather as this will make it unbearable in the car - I know!
If you rebuild go with ARP bolts, metal head gasket, etc as seen in this forum.
For coolant go with Toyota red coolant and Redline Water Wetter. A great combo.
Good luck.
If you rebuild go with ARP bolts, metal head gasket, etc as seen in this forum.
For coolant go with Toyota red coolant and Redline Water Wetter. A great combo.
Good luck.
albertmdh said:
ill never understand this...
PEOPLE! if you think you ave bhg... get a 25 dollar compression gauge from any local auto parts store...and do a damn compression test...nothing solid there? get a block tester from NAPA... see if gasses are mixed in...
not hard to diagnose this shit...
i mean, radiators are pretty expensive, i wouldn't pay for one unless i really needed to, thats precious gas and modding cash!
sounds like a bhg. but somedays ya just never know... could be anything. i test a lot of things before i rip into it. its just easier than spending money and finding out what you replaced is not the problem at all.
Along these same lines: Bought an 89 turbo a year ago, spun a bearing- installed JDM motor- after sitting all winter started car up- 15ish minutes into idle starts blowing white smoke, or during throttle up. BHG? after shut down a LOT of gurgling in and around radiator. Getting ready for comp test, then head tear down and rebuild with 1mm oversize valves and N/A cams (which is a whole different question). Help! Thanks, Eric