Ground breaking MODFICATION>>FREE!
#27
RX for fun
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If you really want to cool your oil, run 2 stock oil coolers in series. I've used a RX-4 and a GSL-SE (with t-stat removed and modified) in series. It ran cool except I took it off as I sold the SE oil cooler. I didnt feel its worth it for a street driven car.
Next time, when I complete my blow-thru turbo in the FB, I will do it again but with an RX-2 oil cooler. The RX-2 oil coolers were equipped with external oil-t-stat.
Next time, when I complete my blow-thru turbo in the FB, I will do it again but with an RX-2 oil cooler. The RX-2 oil coolers were equipped with external oil-t-stat.
#28
Rotartist
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Again there are lots of way to do this, better ones too, but this is basically just an idea I hatched up and thought it would be an inexpensive way to cool the oil...
#30
Ok what about the fittings? Can we use fairly standard fittings or are we going to have to call OddWidgetsRUs and pay more for fasteners than we'd pay for a regular oil cooler??
Are we thinking of running this inline or instead of the beehive?
As for crud in it, it couldn't be that bad. For one there wont be much in there and if there is its unlikely to be something dangerous to the engine. If it were a corrosive substance, it would probably eat the lines and bits in the A/C system.
When I first read this I thought RRTEC might have been thinking about mounting the coldside of the A/C system to the beehive. I'm glad I didn't have to teach him the laws of thermodynamics with a brick.
Are we thinking of running this inline or instead of the beehive?
As for crud in it, it couldn't be that bad. For one there wont be much in there and if there is its unlikely to be something dangerous to the engine. If it were a corrosive substance, it would probably eat the lines and bits in the A/C system.
When I first read this I thought RRTEC might have been thinking about mounting the coldside of the A/C system to the beehive. I'm glad I didn't have to teach him the laws of thermodynamics with a brick.
#31
Airflow is my life
Originally Posted by numan2
the condensor is way too restrctive to work as an engine cooler it won't flow the volume of oil required and will fry your engine due to lack of lube.
#32
Right near Malloy
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Originally Posted by skrewloose78
how about grabing a radiator for an automatic 7 and running the oil thru the trans cooler lines?
#33
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so hey is this a good idea for an auto tranny?? it seems like a nice big cooler and it will save me $$$$ my rx isnt an auto right now it will be...( i dont really wanna say why until i go find my fire suit but any opinions on the topic at hand would be helpful)
#35
FB+FC=F-ME
The engine oil coolers on a rotary are full flow, meaning that ALL the engine's oil runs through the cooler before reaching the engine.Its a lot of volume,pressure and heat.The AC condensor would be too restrictive,not to mention not having a thermostat to regulate temp and it probably lacks internal turbulators to break up the boundry layer which really helps with the heat tranfer.
Tranny coolers only have to pass bypassed fluid from the pump.Its a relatively small,low pressure amount compared to how much the tranny pump is moving.Ever noticed how flimsy and light AT cooler hoses and clamps are on some cars?
Tranny coolers only have to pass bypassed fluid from the pump.Its a relatively small,low pressure amount compared to how much the tranny pump is moving.Ever noticed how flimsy and light AT cooler hoses and clamps are on some cars?
#36
Anti-rice Superstar
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Originally Posted by Low Impedance
wonder if you can use the A/C system to cool an Intercooler
it sounds like bigb is about to commit the ultimate rx7 sin
#37
Rockn' The Galant
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bigb3433,
You've got a Torque Converter that needs to be cooled along with transmission fluid.
For about $60.00 you can get a Transmission Cooler that keeps your fluid cool and at optimum temp.
B&M Hi-Tek/SuperCoolers
You've got a Torque Converter that needs to be cooled along with transmission fluid.
For about $60.00 you can get a Transmission Cooler that keeps your fluid cool and at optimum temp.
B&M Hi-Tek/SuperCoolers
Last edited by Tech_Greek; 02-01-05 at 09:06 PM.
#40
Lean Mean Speed Thingie
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well guys...its been done. dan atkins had this on his 88 repu (b series pickup with a supercharged 13b) pretty neat idea i thought. I thought that until he overheated going over every grade we came up to! Most of this had to do with the location of the condenser, right in front of the radiator, not enough cool air for the radiator. i got some cool pics of the overheating...i might post em later.
#41
RX for fun
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Originally Posted by mcnannay
well guys...its been done. dan atkins had this on his 88 repu (b series pickup with a supercharged 13b) pretty neat idea i thought. I thought that until he overheated going over every grade we came up to! Most of this had to do with the location of the condenser, right in front of the radiator, not enough cool air for the radiator. i got some cool pics of the overheating...i might post em later.
there ya go. I remember speaking with Dan about this problem during his drive at SS7. He was to stop by at my pad so I can install a FC OC. Glad he made him home.
#42
Originally Posted by Low Impedance
my thinking is, the AC cools air right? so it sound cool and IC. i might "see what happens"
The short version is that we're dealing with a very lossy system. You will not get as much power out of cooling down the intercooler as it will take to run the A/C. Never ever. If you do, you're measuring it wrong or you've shattered several hundred years of science.
The longer less coherent explanation is that the a/c condensor takes a certain amount of power to work. Thus the a/c takes power from the engine to work. That power is not converted 100% to cooling power, you cannot get as much power out of something as you put into it. Theres drag from the bearings, you're turning a mechanical spin into a compressed gas, and so on.
Now the intercooler will not perfectly mate to the cold-side of the a/c system (the evaporator) so you have another imperfect exchange. It will never exchange at 100% efficiency.
You're trying to create perpetual motion, drawing power from a system to add more power to the system. You won't ever be able to put even the same amount of power back that you took out. You will always lose power when you change it or transfer it.
#44
Lean Mean Speed Thingie
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Originally Posted by wackyracer
there ya go. I remember speaking with Dan about this problem during his drive at SS7. He was to stop by at my pad so I can install a FC OC. Glad he made him home.
But yeah he had a hell of a time getting over the grapevine or whatever they call it, he left like an hour before the rest of the pack when we stopped right before to eat, and we still passed him...
its a very creative idea, but it just doesn't work, and thats been proven to some extent, although i am curious to see how it would work if it were not blocking the radiator, because you have to keep in mind dans condenser was right in front of the radiator
#45
Banned. I got OWNED!!!
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dan atkins has a supercharged 13brew in his b2200 mazda truck and hes using the trucks stock ac condesonr or radiator whatever the hell its called, fo rhte oil cooler, he has had no problems with it.
:EDIT: i guess this was already posted, i reposted.. sorry
:EDIT: i guess this was already posted, i reposted.. sorry
#46
RX for fun
iTrader: (13)
Originally Posted by mcnannay
But yeah he had a hell of a time getting over the grapevine or whatever they call it, he left like an hour before the rest of the pack when we stopped right before to eat, and we still passed him...
#47
Burning Oil-Grinding 3rd
Originally Posted by Low Impedance
wonder if you can use the A/C system to cool an Intercooler
#48
Respecognize!
AHA! so it can work! what if you made a dedicated system using liquid nitrogen....sure it would be almost impossible to control and be unsafe or whatever, but your charge temp would be somehwere around -100 degrees...
#49
My FB is broke!
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Well, I can see using the A/C system for a hot weather car, especially someplace like in Sacramento where we can get some gnarly hot air coming off the pavement, or for racing applications. Yes, you lose a bit of power off of your engine, but you can do some additional cooling beyong an intercooler that might help... or you could run an evaporator / IC setup (somehow... fabricate? People are gonna kill me for this! :P) that would allow you to cycle refridgerant in it for the same charge idea... or how about running cold air from the cabin A/C system into the intercooler?
If things get too hot, you have fuel issues, although I'm pretty sure the Rotary doesn't care about it, being such a fun system. When you get too cold, especially with a carbuerator, Bad Things happen. Mostly with fuel fallout. Admittedly, you might be able to use the Turbo to have fast enough airflow so that your fuel falls out into your engine, buuut...
I need to toss my beehive. Its leaking again! Time to head to head towards the junk yards again... grumble.
If things get too hot, you have fuel issues, although I'm pretty sure the Rotary doesn't care about it, being such a fun system. When you get too cold, especially with a carbuerator, Bad Things happen. Mostly with fuel fallout. Admittedly, you might be able to use the Turbo to have fast enough airflow so that your fuel falls out into your engine, buuut...
I need to toss my beehive. Its leaking again! Time to head to head towards the junk yards again... grumble.