Oil cooler setup
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Oil cooler setup
I am about to install my second oil cooler on my touring and was wondering if booth coolers have thermostats on them. The one I am adding is a DS from a touring. I remember reading that on an R1 setup only the first one has the t-stat, but from looking at the setup, it looks like you woud need two. Also, should I expect this thing to mount right up, or will I have to fab some mounts? I haven't even looked in there yet.
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IIRC the coolers are plumbed in series so only need 1 thermostat - the flow path = from engine thru t-stat to dr side cooler thru cooler then out to pass side cooler then back to engine -
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Originally posted by maxpesce
IIRC the coolers are plumbed in series so only need 1 thermostat - the flow path = from engine thru t-stat to dr side cooler thru cooler then out to pass side cooler then back to engine -
IIRC the coolers are plumbed in series so only need 1 thermostat - the flow path = from engine thru t-stat to dr side cooler thru cooler then out to pass side cooler then back to engine -
#7
the path is correct, but it seems to me you'd need a second thermostat. The internal thermo is bypassing the driver's side cooler and sending it to the passenger's side cooler. Cold oil w/no thermostat could equal a blown cooler. There needs to be two bypasses, one for each cooler, no?
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Originally posted by rx7tt95
the path is correct, but it seems to me you'd need a second thermostat.
the path is correct, but it seems to me you'd need a second thermostat.
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Originally posted by DamonB
No. If the first thermostat is closed the oil never even enters the first oil cooler and so there is no external oil circulation whatsoever.
No. If the first thermostat is closed the oil never even enters the first oil cooler and so there is no external oil circulation whatsoever.
The thermostat is only a bypass for the particular cooler that it's attached to. Both of the stock R1 coolers have thermostats. Only if you ran an external thermostat that bypassed the entire cooling system, you would only need one thermostat, but that's not what the stock thermostats do.
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Originally posted by potatochobit
yes it is built in but if you added another driver side on the new passenger side you would have 2 thermostats.
yes it is built in but if you added another driver side on the new passenger side you would have 2 thermostats.
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The purpose of the "bypass" t-stat is so that oil is still circulating through the system. If you have a t-stat that just blocks oil flow, then the hot oil would never flow to the t-stat, it would have to be done by convection....or conduction....i can't remember which one. Correct?
And I bough adapers the go from the 22mm threaded holes in the oil cooler to -10. I got rid of the stock clip thing, cause no one seems to sell those connectors. Plus when I want to upgrade oil coolers, I just plug em in.
And I bough adapers the go from the 22mm threaded holes in the oil cooler to -10. I got rid of the stock clip thing, cause no one seems to sell those connectors. Plus when I want to upgrade oil coolers, I just plug em in.
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Originally posted by radkins
The purpose of the "bypass" t-stat is so that oil is still circulating through the system. If you have a t-stat that just blocks oil flow, then the hot oil would never flow to the t-stat, it would have to be done by convection....or conduction....i can't remember which one. Correct?
The purpose of the "bypass" t-stat is so that oil is still circulating through the system. If you have a t-stat that just blocks oil flow, then the hot oil would never flow to the t-stat, it would have to be done by convection....or conduction....i can't remember which one. Correct?
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Originally posted by 93BlackFD
22mm threaded holes? 1.5mm pitch threads? did you use aeroquip? how are you going to run thermostats with -10 connections?
22mm threaded holes? 1.5mm pitch threads? did you use aeroquip? how are you going to run thermostats with -10 connections?
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if there are two oil cooler thermostats, wouldnt the oil sit in the first oil cooler until it was reheated enough for the second to open? then there is no reason to run two oil coolers. it would be one oil heater and one oil cooler ha
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Originally posted by potatochobit
if there are two oil cooler thermostats, wouldnt the oil sit in the first oil cooler until it was reheated enough for the second to open? then there is no reason to run two oil coolers. it would be one oil heater and one oil cooler ha
if there are two oil cooler thermostats, wouldnt the oil sit in the first oil cooler until it was reheated enough for the second to open? then there is no reason to run two oil coolers. it would be one oil heater and one oil cooler ha
Thermostats do not block oil flow, they re-route it past the cooler. Period.
Everyone is right when they tell you not to worry because they're both stock coolers and both have internal thermostats, but don't forget to get the direction of the oil flow correct. Hook it up in the same fashion as your existing cooler.
You also asked what to expect when mounting this. It's not a direct bolt-in at all. You said that you have another drivers side cooler.. well, the R1 2nd oil cooler is a mirror-image of the driver's side cooler so you'll have to get creative with the mounting. The duct probably won't work at all but it might provide you with a good start at fiberglassing a new one.
I have some detailed pics from when I pulled mine off, if you need some reference. Just let me know. Good luck.
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I am assuming the flow direction should be thermostat side = in?
What I was trying to ask earlier was, with aftermarket coolers and external t-stats, do they block flow or are they bypass also. I cant see how they are bypass without some creative plumming. If they do block flow when closed, how does hot oil ever get to the t-stat to open it. Does that make sense?
What I was trying to ask earlier was, with aftermarket coolers and external t-stats, do they block flow or are they bypass also. I cant see how they are bypass without some creative plumming. If they do block flow when closed, how does hot oil ever get to the t-stat to open it. Does that make sense?
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Sorry for the derail, but this thread seems remotely related.
What do you guys think would be better, another stock unit or a huge oil cooler in the stock location? This is barring a 99 spec front bumper that will eventually go on.
What do you guys think would be better, another stock unit or a huge oil cooler in the stock location? This is barring a 99 spec front bumper that will eventually go on.
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Originally posted by DaedelGT
Sorry for the derail, but this thread seems remotely related.
What do you guys think would be better, another stock unit or a huge oil cooler in the stock location? This is barring a 99 spec front bumper that will eventually go on.
Sorry for the derail, but this thread seems remotely related.
What do you guys think would be better, another stock unit or a huge oil cooler in the stock location? This is barring a 99 spec front bumper that will eventually go on.
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Originally posted by radkins
I am assuming the flow direction should be thermostat side = in?
What I was trying to ask earlier was, with aftermarket coolers and external t-stats, do they block flow or are they bypass also. I cant see how they are bypass without some creative plumming. If they do block flow when closed, how does hot oil ever get to the t-stat to open it. Does that make sense?
I am assuming the flow direction should be thermostat side = in?
What I was trying to ask earlier was, with aftermarket coolers and external t-stats, do they block flow or are they bypass also. I cant see how they are bypass without some creative plumming. If they do block flow when closed, how does hot oil ever get to the t-stat to open it. Does that make sense?
Yup. Your question makes sense.
With an aftermarket setup, you have a t-stat with 4 couplings.. One line from the block, one line back to the block. One line to the cooler(s) and one line from them. When the oil is cold, the thermostat is closed and it just takes the return path back to the block. When it warms up the thermostat opens up a bit and some makes its way through the cooler(s). How much depends on the temperature.
I second Rynbergs thoughts on cooler preference. If you have the opening, a larger cooler would definitely be easier to implement and you'd keep a nice cool air duct on the other side of the car. The word on the street is that the stock coolers are pretty hard to beat. Assuming they aren't all beat up.
The coolers are made from very soft aluminum.. While you're in there I'd spend some time straightening the fins and maybe putting some screen in the ducts. Pics of Mine here
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http://www.autosportracetech.com/RX-7/oilsystem.htm
All of the oil (except that which is above 150 psi after the pump and is relieved back to the sump) that is pumped thru the engine first goes thru the oil line to the 1st cooler. If cold, it bypassses to the return line to the oil filter, or to the 2nd cooler for R1s where if cold, it bypasses again and returns to the oil filter. There is only one return line.
R1 coolers are in series, not as efficient as parallel, but easier to plumb.
All of the oil (except that which is above 150 psi after the pump and is relieved back to the sump) that is pumped thru the engine first goes thru the oil line to the 1st cooler. If cold, it bypassses to the return line to the oil filter, or to the 2nd cooler for R1s where if cold, it bypasses again and returns to the oil filter. There is only one return line.
R1 coolers are in series, not as efficient as parallel, but easier to plumb.
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Originally posted by potatochobit
if there are two oil cooler thermostats, wouldnt the oil sit in the first oil cooler until it was reheated enough for the second to open? then there is no reason to run two oil coolers. it would be one oil heater and one oil cooler ha
if there are two oil cooler thermostats, wouldnt the oil sit in the first oil cooler until it was reheated enough for the second to open? then there is no reason to run two oil coolers. it would be one oil heater and one oil cooler ha
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