GREG COLLIER can you please answer this question for me.

[dnhieu]

for my motor rebuild i bought a diamond star motorsport oil cooler kit to be used with my 90s oil filter housing. before i put the motor in the car i thought i would figure a way i can get this thing mounted. so the first persons gallery i thought of looking at was yours because of the good pics you had in it. well i mounted my oil cooler in almost the the same exact way you did! after thinking about this a good while i was "crap how is this going to work with when i change my oil every 3k miles the oil cannot come out of the oil cooler the way it is mounted unless the oil pump is pushing it through". should i go ahead and figure out a way so i can mount it upside down? i was curious if you had any problems with this or you just dont care because you change your oil so often that their is always clean oil in it. i will be using this mainly as a daily driver and probably be changing my oil every 1.5 to 2k. unlike you who changes your oil way more often then that.

thanks alot
david

 

[project_tsi]

I have a question regarding this setup. If you were to be using the setup from DSMotorsports, how much more oil does this allow in your system?

 

[dnhieu]

good question, didnt even think about that one

 

[99gst_racer]

I have a question regarding this setup. If you were to be using the setup from DSMotorsports, how much more oil does this allow in your system?

I wouldn't think it would be much more than what a 1990 owners manual calls for. The cooler itself is not much bigger than the stock unit. The pic looks like it's a 11"x6" Tru-cool cooler and 10AN hose. I would guess maybe a 1/2 or 1 quart over stock 90' specs.

 

[dnhieu]

hey the rueles state that their will be no "guessing"! j/k i know the 5qts everyone puts in would be more then plenty. here are some pics of my oil cooler after i hacked it up to get it to fit.

 

[dnhieu]

anyways can we get back on topic. just curious if i have my oil cooler set upwards (like gregs) instead of downwards would cause any major problems from dirty oil being left in it after oil changes. like metal shavings and such.

 

[Greg Collier]

Well this is a first for me (having my name used as a part of a thread title)

No... I'm not concerned with the minimal amount of oil left in the cooler during an oil change. My only concern is that I'm cooling the oil down enough for all of the engine components (so they don't blow up)

I also figured that gravity might help with the flow.

 

[v8s_are_slow]

Well this is a first for me (having my name used as a part of a thread title)

No... I'm not concerned with the minimal amount of oil left in the cooler during an oil change. My only concern is that I'm cooling the oil down enough for all of the engine components (so they don't blow up)

I also figured that gravity might help with the flow.

Well, like I was telling David tonight, it's like pulling the drain plug during an oil change and putting the plug back in with about a quart of the old oil still in there. Who would do that??? It's definately NOT how I'm gonna have mine set up. The fittings will either be one on top and one on bottom or, both on bottom.

 

[Defiant]

If you're throwing away oil at 3,000 miles, you never have "old" oil. It's a non-issue.

 

[dnhieu]

If you're throwing away oil at 3,000 miles, you never have "old" oil. It's a non-issue.

what do you mean by this? i would consider oil at 3k to be used. you think sediments will build up in the bottom of the cooler?

thanks
david

 

[GreenGSX]

The fittings will either be one on top and one on bottom or, both on bottom.

You do not want to have both the inlet and the outlet on the bottom. You want to fill the core from the bottom and drain it off the top so it fills completely and cools the best. That also keeps air from getting trapped inside the core. Both on works just as well but do not put both on the bottom.

 

[v8s_are_slow]

Well for me personally, I want it flowing from top to bottom (or bottom to top...whichever's better). I meant to say that I'd rather have both on bottom than both on top if I had the choice. Not saying I'd do it cause yeah it does seem to be harder to fill the cooler. I was at the dealership yesterday though and the diagram they had of the stock cooler had both on bottom. Flowing from top to bottom (like a radiator) would be ideal though. I'm gonna do that even if it means getting a smaller cooler to do this. David may not have the room to do this because the size of his cooler but still, having both on top just seems insane to me. Have all that money tied up in the motor and then do that???

Changing your oil regularly or not, there's still gonna be metal particle's etc. that isn't getting out of the cooler. Would you put the drain plug back in the pan with a quart left in the pan when doing an oil change just because the oil is getting changed regularly??? Cause that's the same thing if you have the cooler set up with both on top. Let's see a show of hands of those that would. My hand isn't going up.

 

[dnhieu]

well i hate to do you like this scott but gregs oil cooler is up just like my hands . this guy road races his dsm. thats balls to the ball for however many laps he runs. thats way harder then ill ever run my dsm on the street and i think if he has raced his dsm for a few years (with the same motor which isnt fully built like mines going to be) with no problems then its good enough for me.

but i do see where your point very strongly (hence me making a post about it)
david

 

[v8s_are_slow]

Traitor Well, I won't be doing mine like that. There's just no way to deny that the oil won't be contaminated and that it's gonna be left in there. He might be doing it and not have a problem. Many people drive there car 1,000's of miles before doing an oil change and not have a problem. Not that it's good for the motor though. Sure, ya might not see a problem...till it stops running. Can ya actually see metal particles floating around in the motor as it's running? Nope. Just because he hasn't had a problem "yet" doesn't mean it's not doing harm. Just because "X" person does it, doesn't mean I'm always gonna follow. But it's not my motor that'll be done like that so it's not really my concern. To each his own I guess

 

[terefic181]

The amount of oil the stock cooler holds is 1/2 qt. per the manual. There is a pix below with a 3000GT, with stock and aftermarket cooler and it looks to be positioned with both up. I'm sure someone can verify this. The stock oil cooler on the 1G, to be honest I don't remember the configuration, and couldn't find a schematic of it. There's also a pix of a DSM trany cooler from the manual and it's definitely up. You can find some that are both down but, as has been said, if you install both from the bottom and you end up with air trapped in half the cooler, you haven't gained much cooling from your mod. The optimum would probably be one up one down, as in a side flow.

All this said, mine is the same as Greg's. http://www.dsmtuners.com/forums/showthread.php?t=157062

Tom

 

[v8s_are_slow]

I wouldn't see a problem with that design if maybe there was a valve to open up and let out the oil when doing an oil change. Wonder if anyone has taken off their oil cooler and dumped it out or cut it open to see what, if any deposits are in the bottom of it. That'd give us the best answer to this cause I can just see it trapping metal particles, sludge, etc. in the bottom.

I've seen many many raditors that have had crap in them that have to be cleaned out and they flow from top to bottom, not top to top. If a raditor can do that, I can just imagine what an oil cooler would look like over time. Yes the engine oil would get changed out way more often than a radiator...but you see my point.

But then for the other debate. Would it maybe be better to maybe flow from bottom up vs. top to bottom? Or the other way around? And why would it be better?

 

[dnhieu]

I've seen many many raditors that have had crap in them that have to be cleaned out and they flow from top to bottom, not top to top. If a raditor can do that, I can just imagine what an oil cooler would look like over time. Yes the engine oil would get changed out way more often than a radiator...but you see my point.

radiators dont have something like a oil fliter

 

[Defiant]

what do you mean by this?

3,000 is no mileage on modern oils. What wears out in oil is the additive package, which is easily good for 10,000 miles in the most severely-used street engine. Modern oils are miraculous in how remarkably good they are.

i would consider oil at 3k to be used.

The factory says 5,000 for the turbo, and they were saying that fifteen years ago, or three generations of oil formulations back. You can count on that being very conservative.

you think sediments will build up in the bottom of the cooler?

Not in the slightest. In the top of oil's duty list is particulate suspension. Oils don't have sedimentation issues.

 

[dnhieu]

3,000 is no mileage on modern oils. What wears out in oil is the additive package, which is easily good for 10,000 miles in the most severely-used street engine. Modern oils are miraculous in how remarkably good they are.The factory says 5,000 for the turbo, and they were saying that fifteen years ago, or three generations of oil formulations back. You can count on that being very conservative.Not in the slightest. In the top of oil's duty list is particulate suspension. Oils don't have sedimentation issues.

thanks

 

[v8s_are_slow]

Guess next time I do an oil change, I'll just change my filter and top it off with whatever I lost outta the filter since the oil isn't gonna break down and there's not gonna be any debris in my oil. I mean that's what ya'll are pretty much saying...what it sounds like to me anyway. And that old black oil in the bottom of the cooler will be just fine. Okay, I'll shut up now. I just know how my setup is gonna be done