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> Oil Cooler test location, Air speed results
MattR
post Oct 3 2005, 06:42 PM
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QUOTE (trekkor @ Oct 3 2005, 04:26 PM)
Isn't this fun (IMG:http://www.914world.com/bbs2/html/emoticons/wacko.gif)

In a closed system there is no drop in pressure after working presure is acheived.

If it is an open system...That's something altogether different.

If I burst a line, cooler or seal...Why am I still going on?


KT (IMG:http://www.914world.com/bbs2/html/emoticons/w00t.gif)

Depends where you define your system.

But yeah, in any case there are pressure drops over line length. First, and easiest to visualize, is the friction loss from the walls of the lines. Secondly, and probably more important, is the turbulance and direction change within the line. Lastly (what I can think of right now) is elevation change. I dont know how your lines are routed, but if your lines are routed "uphill" both ways, you'll be loosing pressure also through gravity.
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Trekkor
post Oct 5 2005, 07:12 PM
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I guess the cool deal is that the engine pressure will be the same because it is controlled by a different pump.

BTW...My lines are shorter overall, due to the fact that the cooler is closer to the engine.


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SirAndy
post Oct 5 2005, 07:15 PM
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QUOTE (trekkor @ Oct 5 2005, 06:12 PM)
BTW...My lines are shorter overall, due to the fact that the cooler is closer to the engine.

so, what are the numbers? before/after?

common trekk, throw us a bone here ...
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Trekkor
post Oct 5 2005, 07:22 PM
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pressures or temps?

Temps: way, way, way, lower. I'll have a better idea on Friday morning after the first couple of sessions.

Pressures: don't know. (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif)
I just installed the pressure sender and have no basline for comparison (IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif)

On the 911 combo guage with numbers:

It idles at 20 and gets close to 70-80 when revving...warm.

KT
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sixnotfour
post Oct 5 2005, 07:42 PM
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QUOTE
I guess the cool deal is that the engine pressure will be the same because it is controlled by a different pump

yep 2 stage pump in a 911 -6 engine
scavenge side is doing the up front cooler work .
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Trekkor
post Oct 6 2005, 03:46 PM
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I put in two of the front tub grommets (IMG:http://www.914world.com/bbs2/html/emoticons/dry.gif)

Went for a nice little drive down to the gas station.

In dash gauge says 180°...Pyrometer says 190°-200° into the cooler and 180° coming out.

My thermometer out in the yard says it's currently 89°.

It's supposed to be in the 40's-50's in the morning climbing to high 80's in the afternoon at the track.


Seems like sucess. (IMG:http://www.914world.com/bbs2/html/emoticons/mueba.gif)


KT
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Trekkor
post Oct 7 2005, 07:33 PM
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The results:

Ran five sessions at high rpm's and the motor finally saw 210° by the last session.

I'm always happy when something I set out to do works!

Hooray for me! (IMG:http://www.914world.com/bbs2/html/emoticons/smilie_pokal.gif)


KT
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Trekkor
post Jun 4 2006, 11:40 PM
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I made a removeable shroud a couple of weeks ago...


KT


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DanT
post Jun 4 2006, 11:51 PM
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That looks pretty good Trek...what material did you use?

I did something similar with mine by utilizing the stock trunk board...sealed edges with rubber edging to seal periphery, and put in a couple of brackets to hold it down under +air pressure...
Seems to work well...tomorrow will be a good test.
Temps in the high 70s

See you tomorrow AM (IMG:style_emoticons/default/driving.gif)
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Trekkor
post Jun 5 2006, 12:02 AM
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It's fiberglass.

I made a form out of 3/4" rigid insulating foam.
Got the shape right then laminated three layers of cloth and resin.

Pulled the foam away, added dzus fasteners and spray paint.


KT
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Trekkor
post Oct 23 2013, 12:23 AM
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Super late follow up. ( seven years )

With the shroud in place and running hard 30 minute sessions in 110° weather, I was unable to produce temps above 190°...


KT
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Jetsetsurfshop
post Oct 23 2013, 02:24 PM
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Did I miss something here. What oil pump and did you use a spin-on adapter?
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Jetsetsurfshop
post Oct 23 2013, 02:41 PM
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4 or 6 cylinder?
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Trekkor
post Oct 23 2013, 04:16 PM
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It's a SIX conversion.

2.6 short stroke with 9.5:1 comp and Webers!


KT
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