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les_garten les_garten is offline
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Join Date: Jun 2003
Location: PSL, FL
Posts: 861
Quote:
Originally Posted by JFairman View Post
There is a 3rd oil pump on the 930, the turbo scavenge pump.
It is mounted on the firewall end of the driver side camshaft and it isn't moving alot of oil, and but it is pumping by far the hottest over cooked oil back to the oil tank unfiltered.
It would be a good idea to install another oil filter in that oil line especially if you use non synthetic oil because no matter what you do the turbo housing and bearing gets way too hot for most dino oils and turns some of that oil into carbon that will clog the cam spray bar holes eventually... just a matter of time.

Use 100% synthetic oil which has a MUCH higher flash point, and idle the motor for a minute or two after hard running, even moderate driving and coking the oil in the turbo bearing and oil cavity may become a thing of the past.

Merry Christmas!
Hi,
I used to do the idle for a bit deal, but I don't anymore. It seems to me by the time you get off boost and end up some place to park, you've "Idled" enough. At least that's the way I roll! Obviously if you are tracking the car, it's a different story.

Additionally I learne here to rev the engine up to 1500-1800 for a few seconds and shut off from there, scavenges the oil out of the acuumilator tank and cuts down on puffs of smoke on start up.

Les
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---Les Garten---85 930, Andial IC, GHL Headers, Fabspeed Dual, K-27 HF2, 3.4 JE Full Finned 7.5:1 CR, 964 CAM'd, Carerra 3.2 Manifold Cut/Flipped, Tec3r, Siemans 55#, GSF Fuel Rails, Clewett Crank Trigger, Clewett Cam Trigger,Dual Plugged, ARP Head Studs/Rod Bolts, Clewett Wires.Tial 46mm WG, Tial 50mm BOV, WEVO Shifter,934 Boost Gauge, Wideband EGO Sensor/Gauge, C2T Head Gaskets, '88 MB 300TE,BMW R100RT
Old 12-25-2007, 12:09 PM
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