09 coolant temps and oil use?
09-01-2009, 10:28 AM
#26
jersey fresh
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I'm curious as to why they initially have the Rad at an obtuse angle to the airflow, is it due to the need of such a larger area Rad and not enough frame space to mount it vertically or have the concluded that directing airflor across and down resulted in better cooling?
Also if you lose your plastic undertray you greatly reduce the directed air away from the rad.
Also if you lose your plastic undertray you greatly reduce the directed air away from the rad.
09-01-2009, 11:51 AM
#27
jersey fresh
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Exactly. From a strictly mathematical standpoint a certain amount of fluid is necessary to carry the heat from the engine, to the radiator, and to the atmosphere. This dictates the radiator size during the design stage. What I find peculiar is that Mazda chose to use a Koyo/Calsonic core that does not lend itself well to airflow and that the performance Koyo offering for the RX-8 doesn't do much better (or not at ALL according to some).
Additionally, if you look at the steps taken which seem to have done some measureable good (from Mazsport's Cooling System Mod, to BHR/Mamart radiators, to turning the cooling fans on sooner) they all are based on improving airflow volume across the core.
Additionally, if you look at the steps taken which seem to have done some measureable good (from Mazsport's Cooling System Mod, to BHR/Mamart radiators, to turning the cooling fans on sooner) they all are based on improving airflow volume across the core.
09-01-2009, 01:21 PM
#28
jersey fresh
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Because the fans are mounted directly on the back of the radiator and they handle the duty of moving the needed air across the car, and not so much the motion of the car itself. This is why, when a BHR radiator is used, I don't make such a big deal about the foam surround being in place. The fans will pull a LOT of air across the core if only the radiator will let them.
BTW, Corvettes had had this same mounting scheme for a long time now.
BTW, Corvettes had had this same mounting scheme for a long time now.
If someone could post a pic that would be great. I'm questioning the stock rad to see how well the outer edges are sealed up against something (good) rather than having a small space outlining the Rad. Again i'll have to look later to truly satisfy my question.
09-01-2009, 04:25 PM
#29
Super Moderator
I'm curious as to why they initially have the Rad at an obtuse angle to the airflow, is it due to the need of such a larger area Rad and not enough frame space to mount it vertically or have the concluded that directing airflor across and down resulted in better cooling?
Also if you lose your plastic undertray you greatly reduce the directed air away from the rad.
Also if you lose your plastic undertray you greatly reduce the directed air away from the rad.
"To improve both the cooling ability and the sporty design, the radiator is designed to tilt forward to reduce the height and to take in the air from the inlet installed under the bumper."
BTW: MX-5 has the same position type.
Last edited by ASH8; 09-01-2009 at 04:27 PM.
09-01-2009, 09:16 PM
#30
airflow is key as Ray has said. Airflow across the rad core in the pre 09's ise a problem---many causes---design of the air intake area, blocking the rear of the radiator, the angle of the mount etc.
Guess they were not as aware of the heat output of the rotary versus others.
The 09 changes sounds like they have thought about it at least.
Now we do have a little room in our cars in which the angle of the rad mount could be changed a little--not much--but a little.
I just did a secondary radiator set up--solved my heat issues--i am both lazy and cheap!!
i wonder if the radiator mount on the 09's are the same?
Ash once again--great job and good info---an over ride switch would be great if it fdesnt throw codes. With a good shroud in place you could suck up small cats at will!
OD
Guess they were not as aware of the heat output of the rotary versus others.
The 09 changes sounds like they have thought about it at least.
Now we do have a little room in our cars in which the angle of the rad mount could be changed a little--not much--but a little.
I just did a secondary radiator set up--solved my heat issues--i am both lazy and cheap!!
i wonder if the radiator mount on the 09's are the same?
Ash once again--great job and good info---an over ride switch would be great if it fdesnt throw codes. With a good shroud in place you could suck up small cats at will!
OD
09-01-2009, 09:45 PM
#31
3-wheeler
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09-02-2009, 01:23 AM
#32
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This ones for you Swoope, OD and Flash..
https://www.rx8club.com/showthread.p...92#post3202492
https://www.rx8club.com/showthread.p...92#post3202492
09-02-2009, 01:23 AM
#33
3-wheeler
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This ones for you Swoope, OD and Flash..
https://www.rx8club.com/showthread.p...92#post3202492
https://www.rx8club.com/showthread.p...92#post3202492
09-02-2009, 02:22 PM
#35
Super Moderator
Thanks..does not take long at all really.
Do you think I should spray some Matt Black paint over the aluminum??
Would probably chip off over time??
Do you think I should spray some Matt Black paint over the aluminum??
Would probably chip off over time??
on its own. Just drive down one dirt road a few miles and then you will be good to go!
09-03-2009, 11:33 AM
#37
My 8 looks like a Smurf
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So far it's pretty good. The damn bugs stick to it like crazy though. Some rocks managed to chip off tiny pieces of the paint but it's holding up much better than anything else I tried after about 1K.
I'll grab a pic of the bottle and the car for you if you want. I don't think it'll last forever, I think it's like calipers, you gotta touch it up once in a while. But, it's far better than the last few paints I tried.
09-03-2009, 03:18 PM
#38
Super Moderator
Thanks...I am down under, may not have the same brand, but I agree, there are paints and paints, cheap spray can paints are CHEAP quality.
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