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David's Avatar
 
Join Date: Apr 2002
Location: Houston (Clearlake), TX
Posts: 8,265
Garage
Is my engine running cold?

The PO installed a front spoiler oil cooler and ditched the front fender oil cooler. It's always run cold even in the Houston heat. My temp gauge is always reading in the lower box and maybe just gets out of the box into the bottom of the center range. I thought it was the gauge or sensor but I've installed a new sensor.

Now with the EFI installed and a separate temp sensor even the EFI shows it only getting to about 165F although I haven't driven it hard yet and the ambient temp is only about 70F.

Is this too low?
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2014 Cayman S
2011 Cayenne Turbo
1979 930 (475 rwhp at 0.95 bar)
Old 11-15-2006, 07:20 AM
  Pelican Parts Technical Article Directory    Reply With Quote #1 (permalink)
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Craig 930 RS's Avatar
 
Join Date: Sep 2003
Location: Kirkland, WA
Posts: 10,152
Oil line thermostat should open at about 180, making this a non-issue...is it open all the time?

It's a "kinda who knows" - with the time and effort ya put into that pup, you should invest in a numbered gauge.......no more guessing!
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 11-15-2006, 08:29 AM
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Crotchety Old Bastard
 
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 12,688
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This is how I checked mine:
After you warm the car, pull it into the garage and let it sit and idle.
Stick a cooking thermometer in the oil tank (suspend it).
Periodically feel the oil cooler until it starts to warm.
Note the temperature.
Trash the old temp gauge and install a numeric one.

Worked for me.

What I found was that at sustained highway speeds in cold weather the engine does not heat up enough to open the thermostat. This may be a 930 specific issue due to the fuel cooling and lower C/R of those engines. One thing that helped was to block off my giant tail, restricting flow to only go through the intercooler.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 11-15-2006, 09:27 AM
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David's Avatar
 
Join Date: Apr 2002
Location: Houston (Clearlake), TX
Posts: 8,265
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I'm thinking it's the thermostat. If it's a 180 thermostat, I guess my front cooler should be cool all the time. I'll check that after my drive home from work.

After not buying much from Pelican for the last two years, since they don't sell most of the stuff I used for the rebuild, I've been making up for it the last couple weeks.

The problem is I can't seem to keep a good list of what I need so I end up ordering little crap every few days. I'm waiting for a Wevo shift coupler right now. I thought I'd see how much it helps before springing for a new shifter.
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2014 Cayman S
2011 Cayenne Turbo
1979 930 (475 rwhp at 0.95 bar)
Old 11-15-2006, 10:19 AM
  Pelican Parts Technical Article Directory    Reply With Quote #4 (permalink)
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