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Originally Posted by Brian Carlton
The '86 runs at 90°C. all the time.......except when you use the boost. Even on cooler days, a reasonably heavy accel with boost will drive the temp. up closer to 100°C. It's disconcerting..........for sure........but a very long 6% upgrade at 65 mph at 75° ambient temp. failed to drive it above 105°C.
So, personally, if it can stay below 105°C, I'm not worried about it. You can go and spend a bunch of money to get a 5° improvement if you want. But, the engine won't care..........
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I first off cleaned the car cause it had been sitting for almost two months and was just looking awful. I am going to do a complete repaint later this year/fix the sunroof/and fix my rear power seat/recover my b piller covers/etc. BUT... I could not stand the car looking so neglected any longer. So after I wash and a nice coat of wax on the top surfaces, I set about to check on the engine temp issue. I started the car, and let it warm up while i waxed the top surfaces. Apply wax, let dry and buff off should give it enough time to warm up. Got into the car and with NO AC... I was running right about 2 needle marks or so above 80C. Turned the AC on, started to drive and found a few nice uphill grades, passed a old commercial truck going up a hill with the AC on, and generally gave ol Rudy a good workout. The highest the temp climbed was right about a needle mark from the 100C mark. Turned around and drove back down the hill with it still running between 90-100C. Turned on the heat full blast, and continued to drive and brought the temp back down to 80-85C. Turned off the heat and went to HIGH AC (extra load on the motor) and got it to climb back up. Pulled in to my driveway and at idle was able to keep it right about 98-100C. Usually staying a couple needle marks below 100. Heat back on HIGH... waited for the monovalve to open, and temp went back down to below 90C. Revved it up to 2500-3000 and it dropped even lower.
Here is my thought.
I tried all the easy remedies to fix the cooling system. Stop leak in the normal coolant, and then this
http://www.barsproducts.com/product.cfm?id=41
Is bars heavy duty head gasket repair. I followed the directions and flushed the cooling system, and followed the whole stupid proceedure to make sure I would get maximum results. I am thinking that somehow in this process, it plugged up the radiator a little bit and in the process of working on the motor, etc, etc. more crap got broken loose and it clogged it even further. I am guessing that my radiator is not working at 100% and might be causing the car to run at a higher temp. Especially since turning on the heat full blast seems to add enough extra cooling capacity to bring the temp back down to what I am used to. I would say the only other annoying thing that came out of this whole process was that I noticed the car being a little louder today and I looked underneath to find my coveted sound shield missing. My glorious mechanic took it off and forgot to put it back on. UGG... makes it hard to get really upset when he is a friend and is doing it as a favor at a reduced price. Oh well... I wish I would have had the time/space to do the repair myself. I know that I would have been more thorough, and would have enjoyed the whole process much like I did with another car that I had.
Again... any comments would be greatly appreciated!
Aaron