oil only turbo question...

[vinniem3]

This is only a question as my friends DSM has this and it seemed simple enough....

Is there any reason why we use a coolant and oil cooled turbocharger instead of having choice of using the oil cooled variety only and plugging the water ports? Or is this still optional?

Questions by some may ask, why would we want to do that?
My answer is: To eliminate additional hose/lines and clearance issues.

I would think the water outlet from the head could feed to the jacket for the #4 coolant mod everyone talks about. In which i'd like to know how that in itself is done......(#4 coolant mod).

Thanks guys...< V >

[puppet]

The coolant works after shutdown to keep the oil from vaporizing into a cokey rock.

[john1320]

I would use an active oil cooler with temp relay and a timer, if you go down that road.

[puppet]

Quote:

Originally Posted by john1320 I would use an active oil cooler with temp relay and a timer, if you go down that road.

Without the coolant to wick the excess heat away, the oil will still suffer the same fate eventually. After I run it hard and let the engine idle for a couple minutes the EGT's still read around 1000* back there. After shutting it down, with no coolant, the oil that didn't drain out completely would still cook. Unless you had active oil flow to the turbo after the engine was shut off.

[Tim_K]

Just leave the stock coolant lines connected. Our design is superior to the DSMs and any other turbo car with no coolant lines in them. Don't try to improve something that doesn't need improving.

[vinniem3]

Quote:

Originally Posted by Tim_K Just leave the stock coolant lines connected. Our design is superior to the DSMs and any other turbo car with no coolant lines in them. Don't try to improve something that doesn't need improving.

Yeah man i hear ya loud and clear....
I didn't intend to do anything of such. Just was curious about this and statrted to wonder why it was that way. Our system makes total sense. Especially if it's simple enough without getting in the way of anything. However, knowledge is infinite.....

[vinniem3]

Quote:

Originally Posted by puppet Without the coolant to wick the excess heat away, the oil will still suffer the same fate eventually. After I run it hard and let the engine idle for a couple minutes the EGT's still read around 1000* back there. After shutting it down, with no coolant, the oil that didn't drain out completely would still cook. Unless you had active oil flow to the turbo after the engine was shut off.

Speaking of letting the car run for a few before shutting off after a hard run, has anyone installed a turbo timer on their rigs? I was thinking of getting one, but wasn't sure what was used by others on our rides that they found to be simple and reliable, etc. Feedback is appreciated.....

[xrattiracer]

I always remove the coolant lines as one of the first things if i work on a car. They get in the way, dont really help any, and create more points of failure.
The turbo will get along fine without them, and you wont even have to modify your driving style (cooldown period, etc) if you use a good synthetic oil (which you use already, right?).
as for the turbo timer, heres my thoughts: "a turbo timer is a device designed for the sole purpose of seperating a ricer and his money."

[puppet]

Coked oil in the bearings/seals is probably the #1 reason a turbo fails.
Using dino oil without a water jacketed housing, this is fact. Even with a synthetic oil this will happen eventually. Water jacketed turbos last longer .. especially when synthetic oil is used.

Why you would defeat the center housings water cooling and/or recommend somebody else do this is beyond me.

[88jbody]

it's not worth the very little clearence you will gain...the cooler that turbo stays the better

[crazymadbastard]

Quote:

Originally Posted by xrattiracer I always remove the coolant lines as one of the first things if i work on a car. They get in the way, dont really help any, and create more points of failure. The turbo will get along fine without them, and you wont even have to modify your driving style (cooldown period, etc) if you use a good synthetic oil (which you use already, right?). as for the turbo timer, heres my thoughts: "a turbo timer is a device designed for the sole purpose of seperating a ricer and his money."

If it is a strip-only car then I would agree that the water cooling is uncessary.

[vinniem3]

Quote:

Originally Posted by puppet Coked oil in the bearings/seals is probably the #1 reason a turbo fails. Using dino oil without a water jacketed housing, this is fact. Even with a synthetic oil this will happen eventually. Water jacketed turbos last longer .. especially when synthetic oil is used. Why you would defeat the center housings water cooling and/or recommend somebody else do this is beyond me.

Do you think that the oil cooled only turbos may have a much thicker center section to keep the oil compartment cooler than the turbos that are water /oil cooled? I would think the walls would be thinner on these therfore using one without using the water line would be asking for big time trouble. If there is truth to my speculation above, then using an oil cooled designed only turbo wouldn't hurt any more than the one's we use. If they cool relatively the same, then i suppose not one is any more superior than the other now is it?

As for most.....
I feel some guys here just outright can't stand the DSM or other ricer cars period and would just rather bash them instead of trying to understand why they do, the things they do!! I've seen some things that they use that i felt were very innovative indeed and wanted to apply some of those methods to our rides. Things i try to remember are alot of those cars are newer than ours so technology HAS to be better to some point, but not necessarily all points. Second thing was, in sports training, they always say learn from your opponents and about the things they do/are taught.....not to just simply HATE and go reckless against it. I just feel that i'd love to beat every ricer i run up on, but i just simply won't be able to! It just isn't that simple. Just getting respect from my 8V head would be noted worthy and that's all i can ask for when i'm out done.

[puppet]

What I think is that this is just thermodynamics. The water section wicks heat away from the oil center. Take away the coolant jacket and the standing oil will cook. For longevity, the water/oil turbo is a better design because of this combined housing.

[xrattiracer]

so my turbo will last 25 years instead of 30. somehow i have a hard time getting concerned about that.