Non-ducted Oil Coolers
#1
Non-ducted Oil Coolers
I know a bunch of you guys have done similar things with those big *** RX7 coolers.
I've got a big Setrab (around 8x11") but not a lot of room to mount it and nowhere that lends itself to ducting. I'm thinking about mounting it in front of the pass side wheel (ive got an opening there behind the air dam) and just strapping a 7.5" Spal on it to get some airflow.
So, for those of you who have experience with non-ducted fans: Will it work?
I've got a big Setrab (around 8x11") but not a lot of room to mount it and nowhere that lends itself to ducting. I'm thinking about mounting it in front of the pass side wheel (ive got an opening there behind the air dam) and just strapping a 7.5" Spal on it to get some airflow.
So, for those of you who have experience with non-ducted fans: Will it work?
#5
I know a bunch of you guys have done similar things with those big *** RX7 coolers.
I've got a big Setrab (around 8x11") but not a lot of room to mount it and nowhere that lends itself to ducting. I'm thinking about mounting it in front of the pass side wheel (ive got an opening there behind the air dam) and just strapping a 7.5" Spal on it to get some airflow.
So, for those of you who have experience with non-ducted fans: Will it work?
I've got a big Setrab (around 8x11") but not a lot of room to mount it and nowhere that lends itself to ducting. I'm thinking about mounting it in front of the pass side wheel (ive got an opening there behind the air dam) and just strapping a 7.5" Spal on it to get some airflow.
So, for those of you who have experience with non-ducted fans: Will it work?
#7
i have the Setrab and suggested to Hustler that we put the oil cooler in the wheel well area. He laughed and told me to STFU. He had his there and it caught all sorts of debris, somewhere around here is a pic of his old setup. He suggested a smaller cooler mounted on the top of the rad area. it's hard to explain, but he has pics and **** and it looks good.
#12
All of it.
But seriously: no I don't, and I'm way too lazy to pull out my heat transfer book and start doing calculations. All I know is that my current B&M mounted behind the radiator isn't cutting it (yes, Hulster, you told me so)
Hustler: I don't need a smaller cooler to be able to fit it in the heat exchanger box, but I would rather not block air from the radiator seeing as I have water temp problems too.
But seriously: no I don't, and I'm way too lazy to pull out my heat transfer book and start doing calculations. All I know is that my current B&M mounted behind the radiator isn't cutting it (yes, Hulster, you told me so)
Hustler: I don't need a smaller cooler to be able to fit it in the heat exchanger box, but I would rather not block air from the radiator seeing as I have water temp problems too.
#15
Very good question. Its driving me nuts.
I have a fully ducted big *** Chinese radiator, with just straight water and water wetter, and a big B&M oil cooler strapped to the back of it. As well as big hole cut in the hood.
I've also "burped" the system by jacking the front end as high as my jack stands would go, putting a piece of cardboard in front of the radiator, and letting it get nice and hot with the rad cap off to let any air escape.
Possible problems I've identified:
1. I don't have a reroute, but my understanding is that won't help with overall temp issues... so I want to figure that out first.
2.The intercooler takes up 95% of the opening to the radiator... maybe I need to open up the ducting to allow more air around the intercooler?
3. Like I said, the oil cooler on the back of the radiator isn't the best setup... but the water temp overheated badly before this, so I don't think its the culprit.
I have a fully ducted big *** Chinese radiator, with just straight water and water wetter, and a big B&M oil cooler strapped to the back of it. As well as big hole cut in the hood.
I've also "burped" the system by jacking the front end as high as my jack stands would go, putting a piece of cardboard in front of the radiator, and letting it get nice and hot with the rad cap off to let any air escape.
Possible problems I've identified:
1. I don't have a reroute, but my understanding is that won't help with overall temp issues... so I want to figure that out first.
2.The intercooler takes up 95% of the opening to the radiator... maybe I need to open up the ducting to allow more air around the intercooler?
3. Like I said, the oil cooler on the back of the radiator isn't the best setup... but the water temp overheated badly before this, so I don't think its the culprit.
#16
If your ducting is tight against the perimeter of the IC core but is not thoroughly sealed from the bumper all the way back to the radiator, then there may not be enough air getting back to the rad. If it's not totally sealed, but you are channeling air through a decently configured duct, then some airflow around the IC core will most likely benefit you. Also, having a tray extend from the rear of the rad to the subframe will help keep pressure low behind the rad.
I've ducted a bunch of cars and I always move some fresh air around the IC core because I have not been able to seal them completely (street cars with factory bumper guts) and I see great results that way. I have a pretty big IC core (for a Miata) and my own leaky ducting, so mine dips down below the core so fresh air can get to the rad because it's not totally sealed. My car is not a track-only car so take this with a grain of salt, but I beat the bejesus out of it in the mountains here (6-8000' elevation so worse cooling potential to begin with), and my typical coolant temps are 215* at most. I've had it on track at one lapping day with the same ducting setup and it never got over 225-230* during the 20min sessions.
My oil gets fairly hot in those same situations (no oil cooler installed). Yesterday in the mountains I bumped up to about 240* a couple of times, and IIRC on track it was pegged at 250* for most of the time.
Stock radiator, no reroute, 15g@15psi.
I've ducted a bunch of cars and I always move some fresh air around the IC core because I have not been able to seal them completely (street cars with factory bumper guts) and I see great results that way. I have a pretty big IC core (for a Miata) and my own leaky ducting, so mine dips down below the core so fresh air can get to the rad because it's not totally sealed. My car is not a track-only car so take this with a grain of salt, but I beat the bejesus out of it in the mountains here (6-8000' elevation so worse cooling potential to begin with), and my typical coolant temps are 215* at most. I've had it on track at one lapping day with the same ducting setup and it never got over 225-230* during the 20min sessions.
My oil gets fairly hot in those same situations (no oil cooler installed). Yesterday in the mountains I bumped up to about 240* a couple of times, and IIRC on track it was pegged at 250* for most of the time.
Stock radiator, no reroute, 15g@15psi.
#18
You can stack a really big rx-7 cooler in the wind on top of the intercooler, or you can lay a cooler passively; horizontal as Hustler did. But if you are getting unusually high temps, then your problem might be unusually high heat production.
Why not check the basics; even try some race fuel... that'd cool it down if it were coming from a ragged edge tune.
If still too hot, then look at your coolant flow; no thermostat/not enough restriction and too fast of coolant flow? Kinked line/too much restriction? Cracked head or head gasket issue pressurizing the system can also look a little like overheating.
#20
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Hustler... How is your front end/ rad sealed with the oil cooler like that?
Do you have more pics?
I pulled my bumper off and laid my 13 row SETRAB on top of the intercooler. it is a tight squeeze and sealing my radiator to the bumper inlet isn't going to be easy.
Ignore the white jizzzzz from wetsanding my fresh paint last spring.
Do you have more pics?
I pulled my bumper off and laid my 13 row SETRAB on top of the intercooler. it is a tight squeeze and sealing my radiator to the bumper inlet isn't going to be easy.
Ignore the white jizzzzz from wetsanding my fresh paint last spring.