Cunno
Magny-Cours
- Joined
- 13 Dec 2008
- Messages
- 2,650
jotaking said:From my reading and what I have been told (so please don't take this as red)
The rev limit or thereabouts is where the range starts. This climbs up in small increments. I dont know the exact rev numbers but I think its something like 6600 rev1, 6700 rev2???(Any expert input would be good). Each firing of the cylinder is logged in relevant range 1-6. If you register a range 3 then you would also register a 2 & 1 as you worked up the range to a 3.(I think)
I assume the range is there to help diagnose mechanical problems before they have a catastrophic effect?
I don't understand why the range data would be any different on a GT3 other than the registration process would start higher up the rev range?
Ranges 1-3 are generally considered to be acceptable usage and within tolerances. Ranges 4 & 5 would require leak down tests and range 6 possible engine tear down.
IIRC the rev data becomes less important the longer the engine has run past the logging time? Therefore, if it has a range 4 and has run for 200 hours without incident then it would be deemed okay??
I am fully prepared to be shot down in flames!!
It would be good if any experts can input with some good data and evidence to explain to everyone what all this over rev business is about?
Read this, it will clear it up for you.
http://www.911virgin.com/porsche/rev-range-information/