[200q20v] Re: FW: [s-cars] 2Bennett 3B oil cooler upgrade

[QSHIPQ at aol.com]

In a message dated 4/23/01 8:47:40 AM Central Daylight Time, 
jbeer at BooseCasey.com writes:

> Scott
>    Thanks for response.  Your temps were exactly what I was shooting for. I
>  had previously tried an RX7 cooler in front of the main rad. Had to make up
>  lines and relocate a part of the A/C ssytem to make enough room. While I 
saw
>  a little improvement, the tradeoff was a drop of about one  half bar in oil
>  pressure (car normally runs almost 4 bar on the street). TheRX7 cooler also
>  didn't help water temps IIRC. BTW, the fenders are also vented to help air
>  escape. Oil changed before every track event, use Mahle or Mann filter,
>  Mobil 1 15-50. 

How did you measure the .5bar drop?  As a rule, if you use -10 oil lines, you 
might see a slight drop (since -10 is slightly larger than the metric lines 
audi uses).  I look at it this way, a slight pressure drop is good if your 
temps are good, since lower temp oil will have better viscosity, and you 
don't want to shoot high pressure oil back into the sump.  I'd also suggest 
you get one of the 0-5-10/30 Mobil 1 oils, since you don't need the 
additional viscosity polymers if your oil cooler is working better than 
stock.  All cars under my auspicies use the 30w M1 oils with oil temps maxing 
at 120 on the hottest track day, hottest car...

>  The 2B install is pancake, passenger side front, right above the right air
>  duct. The additional ducting for the stock oil cooler comes out with the
>  cooler. Only the "brake" air duct remains. I am going to try to get pic and
>  see if I can scan in my office this week.
>  regards,
>  Jerry 

Sounds like a slick install,  but if it isn't working...  I looked at doing 
that, but found the air flow in the right side of the engine bay was tough to 
duct well, even acceptably.  Running to the radiator side has many 
advantages, the biggest being trapped airflow from the factory and low speed 
cooling effects.  What I find too, is that the water temp has less 
fluctuation, and the rad fan shuts off sooner in low speed hot environments.

The other thing you may want to add, is the 20vt oil baffle from the UrS4 car 
(it sandwiches between the oil pan and the block, you need 2 oil pan gaskets 
to install).

HTH

Scott Justusson
QSHIPQ Performance Tuning
Chicago