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Ideally I need to use a 16 or 19 row oil cooler on my car. Due to lack of space (height) I was thinking of using a pair of 10 row coolers end to end and linking them together effectively making one long but shallow oil cooler.
So, oil in to first cooler then out directly into second cooler and then return to oil take off plate.
Any reasons I shouldn't do this?
Thanks in advance,
Richard
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v8ian
Posted a lot
Posts: 3,763
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I would think you will start to lose oil pressure
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Atmo V8 Power . No slicks , No gas + No bits missing . Doing it in style.
Austin A35van, very different------- but still doing it in style, going to be a funmoble
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Think Automotive do a double width oil cooler from memory. Give them a call. Or Earls Performance I think was the other place.
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If you have the coolers then no problem, quite a common thing for people do do in limited space, even manufactures will run 2 in line sometimes, but you can buy the right thing for less than 2 of the wrong ones
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Contrary to popular opinion, I do have mechanical sympathy, I always feel sorry for the cars I drive.
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If you have the coolers then no problem, quite a common thing for people do do in limited space, even manufactures will run 2 in line sometimes, but you can buy the right thing for less than 2 of the wrong ones Thanks for the replies. Regarding the above, I don't have the coolers yet. The problem I have is lack of space, there is no where to put a normal width 16 or 19 row cooler. Even a narrow width one would be tight and then I would be loosing out on oil capacity and surface cooling area. The only real space I have available is behind the front valance but this is only about 100mm deep, hence my idea of using two 10 row coolers coupled together end on end. Obviously I'd hole punch/flare the valance to allow for airflow. I can get a couple of new 10 row coolers for under £60. |
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May 12, 2013 17:12:40 GMT
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Sorry to bump this up so soon, but has anyone else got any input on me doing this, in particular to potential oil pressure issues?
Thanks in advance,
Richard.
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May 12, 2013 17:43:20 GMT
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May 12, 2013 18:56:31 GMT
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end of day cant see any oil pressure issues as oil is a hydraulic substance and cant be compressed, so 40psi going in one end is going to be 40psi coming out the other end no matter how big or far it has to travel, sounds a good plan for getting your oil cool in a limited space to me !!
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stefan
Posted a lot
If it isn't broken fix it till it is
Posts: 1,598
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May 12, 2013 19:06:10 GMT
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Sound ok to me I agree with Nick (Rottie)
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POWER IS EVERYTHING WITHOUT CONTROL
1985 Honda jazz
1997 Saab 93 convertible
2010 transit 280
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May 12, 2013 19:56:40 GMT
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end of day cant see any oil pressure issues as oil is a hydraulic substance and cant be compressed, so 40psi going in one end is going to be 40psi coming out the other end no matter how big or far it has to travel, sounds a good plan for getting your oil cool in a limited space to me !! Thanks Nick, that does make sense when you put it like that. Appreciate the input guys. |
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May 15, 2013 21:25:34 GMT
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You could see an increase in pressure in front of the oil cooler if it was very restrictive. In reality you won't see a pressure difference, but a bad oil cooler will have a lower flow rate. So putting them in series adds this retriction. Perhaps you can use a BMW oil cooler, I seem to recall they are thin and wide from the factory on certain models.
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Jun 10, 2013 12:27:57 GMT
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end of day cant see any oil pressure issues as oil is a hydraulic substance and cant be compressed, so 40psi going in one end is going to be 40psi coming out the other end no matter how big or far it has to travel, sounds a good plan for getting your oil cool in a limited space to me !! Thanks Nick, that does make sense when you put it like that. Appreciate the input guys. Sorry this is wrong If you have 40psi coming out of the pump (because of the relief spring), and you have a hole the size of a pin you simply will not have the volume of oil at the other end (ie the motor!) to make pressure, hence pressure drop. If you have no/little resistance the pressure is held all the way into the motor, and the flow of oil is good. Joining 2 will have more pressure drop, and it will be critical how you join them avoid sharp 90 degree turns in favour of a hose that has a smooth 180 deg turn, or I have seen people weld two coolers together with a simple hole in the ends and the joiners blocked off Remember pressure is a function of flow and resistance (BTW Flow is arguably more important than pressure ...until you do not have enough pressure) It isn't anything to be worried about, you can still do it and as I said even manufactures with do it in limited space area's. Put your gauge on the last pressure point available (ie the final gallery) and adjust the relief spring (by shimming/whatever) to suit (Sorry it took so long for me to see this) |
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Last Edit: Jun 10, 2013 12:28:42 GMT by notsoswift
Contrary to popular opinion, I do have mechanical sympathy, I always feel sorry for the cars I drive.
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Jun 10, 2013 12:34:26 GMT
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One option that might be worth looing at is the Rover V8 oil cooler from a p38 landrover.
Its long and thin :lol: and has outlets on each end, which might suit your application quite well?
James
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Too many projects, not enough time.
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Jun 10, 2013 13:29:02 GMT
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You would be better plumbing them to work in parallel if you can, even if you have to have them physically in line, you would get less pressure drop/more flow and they would be more effective at cooling too.
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Last Edit: Jun 10, 2013 13:30:31 GMT by phillipm
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luckyseven
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Owning sneering dismissive pedantry since 1970
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Using 2 oil coolers in seriesluckyseven
@luckyseven
Club Retro Rides Member 45
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Jun 10, 2013 13:37:46 GMT
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Mazda RX-7 FD Type Rs have twin serial oil coolers and it works perfectly fine. The twin plain bearing turbo rotary setup gives the oil a really hard time and it's mineral too, due to the design of the engine burning a little oil. They do have a pretty lusty oil pump, but I've pretty much never heard of an FD failing from oil pressure problems (everything else, yeah, but not oil pressure, lol). Mine happily manages over 7 BAR all day long, even when the oil's thinned out from temperatures over 90 degrees. They're a long way apart with plenty of pipe-run between them, too, they mount in the two ducts just above the splitter, below the sidelights like in this pic;  Dunno if that helps you any, but hopefully it'll allay some worry |
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Last Edit: Jun 10, 2013 13:39:07 GMT by luckyseven: spelnilg an grammer
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Jun 10, 2013 15:11:02 GMT
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RX-8 uses a similar system and it's definately a restriction to oil flow, the pressure on the engine side jumps about 10psi when you swap them for something bigger.
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Jun 10, 2013 18:23:16 GMT
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Thanks for the extra info guys.
I had been thinking about this and decided that it would be a far neater installation without any pressure drop issues to find one long slim oil cooler. The previously mentioned BMW ones were silly money even second hand.
Hillmanjames, I've been looking on ebay for suitable coolers and saw P38 Landrover ones but these are a bit too long, thanks anyway mate. However I have found that certain Saab's have an oil cooler which I think will do the trick nicely, at about half the price of the Beemer one.
Thanks anyway chaps, much appreciated.
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