dry start conundrum
#16
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
my car is parked on my driveway but is at a slight angle up and to the left so the front is higher than the back...would there be any issues here with oil and starting? I drive it atm only about once every week.
thanks
Lee
thanks
Lee
#17
Addict
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Shouldn't be an issue, Lee. At initial start (before the oil pressure is up) the engine is lubricated by oil left on the bearings. After a couple cranks the pump starts feeding the bearings. The oil pressure pump is fed out of the oil tank regardless of attitude so how you park won't affect this.
That's one of the benefits of a dry sump, in fact - the car can be doing all sorts of high-G maneuvers and the oil can't slosh away from the pump intake like it can in a conventional wet sump.
That's one of the benefits of a dry sump, in fact - the car can be doing all sorts of high-G maneuvers and the oil can't slosh away from the pump intake like it can in a conventional wet sump.
#18
Three Wheelin'
Thread Starter
Join Date: Dec 2002
Location: Tampa
Posts: 1,367
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I'd like to hear additional thoughts re Mike's dry start technique. Do most listers perform a similar ritual after starting a car that has sat for several weeks? How much actual benefit does a DME-less start give? It seems very simple. Is it as effective as advertised?
Jack
Jack
#19
Race Director
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
honestly, I think you guys are wasting your time doing this. The infintesimal wear that is occuring on a dry start is pretty academic considering most people don't keep cars past 150k miles. Even at that point, the bearings should still be in good shape.
I wouldn't worry about it, at all.
I wouldn't worry about it, at all.
#20
Three Wheelin'
Thread Starter
Join Date: Dec 2002
Location: Tampa
Posts: 1,367
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Interesting point. However, although I've only got 30 K miles on the odo I'm planning (currently) on keeping both cars indefinitely. What about if we plan on keeping the cars past 150 K ??
Any other thoughts?
Thanks
Jack
Any other thoughts?
Thanks
Jack
#21
Race Director
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I wouldn't worry about it.
With the dry sump eliminating just about any chance of oil starvation under load, I would not be at all concerned with the tiny bit of start up bearing wear.
With the dry sump eliminating just about any chance of oil starvation under load, I would not be at all concerned with the tiny bit of start up bearing wear.
#23
Race Director
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Jack,
Im ashamed to say that Im not a 993 owner (or even a porsche for that matter). But my experience with many different engines is that as long as you use a good synthetic oil with regular changes, you keep the oil at the appropriate level, and you wait until the car is warm before you get on it, bearings will be the least of your concerns.
Im ashamed to say that Im not a 993 owner (or even a porsche for that matter). But my experience with many different engines is that as long as you use a good synthetic oil with regular changes, you keep the oil at the appropriate level, and you wait until the car is warm before you get on it, bearings will be the least of your concerns.
#24
Three Wheelin'
Join Date: Aug 2006
Location: Bremerton, WA
Posts: 1,438
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Originally Posted by Peter R.
IMO dry or wet sumps do not make a difference when running dry bearings is concerned. T
Granted, those are big 1-gagillion CC engines with more pistons than most starting grids but.. it was something I'd never seen done before. Not that I'm worried about it but.. what some sort of pre-oiling high-pressure pump be of any value, to combat dry-start damage?