Overheating Issue at Rallycross
#26
The only other possible cause that i can think of for what you descrobe would be a radiator that has partially clogged water pasages that are hard to see and diagnose.
The fanns are running and the heater is the only thing that helps when you are not on the hwy, the cars are pretty old and who knows what coolant was there over the last 20 years.
My SC car runns cool on hot days autocrossing back to back w 2 drivers with just one oem fan ac condencer, WA heat exchanger (Koyo rad)
The fanns are running and the heater is the only thing that helps when you are not on the hwy, the cars are pretty old and who knows what coolant was there over the last 20 years.
My SC car runns cool on hot days autocrossing back to back w 2 drivers with just one oem fan ac condencer, WA heat exchanger (Koyo rad)
#28
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I would be surprised if the oil level would make a difference to the cooling capacity. Oil temps might be a little higher with low oil level - which would be putting more heat into the coolant via the oil cooler - but your 1.6 doesn't have one of those!
I just ordered one of these, so hopefully will help: NEW Mazda Miata 90 97 High Performance ALL Aluminum Radiator | eBay
#30
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Well, I attended another rallycross event with my car yesterday. I installed the aluminum ebay radiator earlier in the week, and that definitely helped. However, the ambient temps were alot cooler yesterday (75F), and only one driver instead of two - so more cooldown time between floggings. In any case, instead of 105C, I was consistently at 85-90C. Yay!
Also won my class, and beat a bunch of Subarus in Prepared All wheel drive too.
Couple pics:
P.S. - There was no way the stock fans would fit in the car with the radiator as delivered. I had to cut the aluminum standoff spacers that the fans mount to by about 1/4" to get the fans closer to the radiator. Then, I had to cut off about 1/2" from the lower portion of the plastic fan shroud itself. It all fits, but there is only a credit card width between the plastic fan shroud and the 1-1/4 hollow racing beat front sway bar. Tight!
Also won my class, and beat a bunch of Subarus in Prepared All wheel drive too.
Couple pics:
P.S. - There was no way the stock fans would fit in the car with the radiator as delivered. I had to cut the aluminum standoff spacers that the fans mount to by about 1/4" to get the fans closer to the radiator. Then, I had to cut off about 1/2" from the lower portion of the plastic fan shroud itself. It all fits, but there is only a credit card width between the plastic fan shroud and the 1-1/4 hollow racing beat front sway bar. Tight!
#32
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Well, the course changed quite a bit between run groups in the morning, and then in the afternoon, it was getting grippier between run groups. So, its hard to compare times.
That being said, I was running at the same time as the horde of turbo Subarus in Prepared All wheel drive, and clobbered them pretty good!
That being said, I was running at the same time as the horde of turbo Subarus in Prepared All wheel drive, and clobbered them pretty good!
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