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les_garten les_garten is offline
Macht Schnell
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Join Date: Jun 2003
Location: PSL, FL
Posts: 861
Originally Posted by DonE View Post
I would be very surprised to see the 1500 rpm cut off work for reducing oil smoke on start-up. That's more an issue of oil seeping past the rings, then being burned on start up. If its a cold start, and if there really is oil in the turbo, it will not be hot enough to combust and turn to smoke on start up - it's coming from the cylinders.

If you have oil in the turbo, you'll have smoke well after start up.

Since my rebuild using JB racing cylinders and JE pistons, I do not have smoke on start up because the piston, rings and cylinders do not have the same characteristics of the all aluminum stock Mahle stuff. This is kind of proven by the 1 quart used every 1500 miles or so.
Hi Don,
This was a little tip I picked up here. The idea is that if you let the engine idle for very long at 1000 RPM that the turbo scavenger does not work very well and will allow oil to flow past the turbo seals. Everytime, I've remembered to do this, no smoke. If I let the car idle some like I'm looking at the EFI ECU, I'll see some smoke next start. YMMV.

---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, 01:57 PM
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