Whats the REV limit on a EB 3.9mp - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

BLWNEB · 02-01-2002, 21:13

Just wondering, what the rev limit is on a EB 3.9mpefi, when it cuts out starts to surge, anyhelp much appreciated.

Aussiblue · 02-08-2002, 06:09

As I rcall 5000rpm - the tacho redline.

rolli · 02-10-2002, 04:39

EASY!

put your boot in while its out of gear, and see where it stops!

:)

Second thoughts, maybe not such a good idea!

Martin · 02-10-2002, 04:47

Its 4500Rpm when in Drive, and 5000 rpm when in '1' '2' '3'

I think in Neutral it will keep reving till its spits a rod

BLWNEB · 02-10-2002, 21:48

So your telling me it starts to bounce surge when it hits 5000rpm na that carnt write, I thought 5500rpm.

Martin · 02-10-2002, 22:05

It should be changing gear at 5000Rpm, not surging.

BLWNEB · 02-11-2002, 22:29

Nope it changes well b4 5000rpm, im talking about the rev limiter.

Hinchi · 02-11-2002, 23:37

On my mates EA s pak with the 3.9 and 5speed he has pulled it thru to around or just under 6000 rpm and hit what he thinks is the rev limiter ( engine has a bit of a fit), yes he is a madman and yes he has now rebuilt the engine twice in 2 years. My old eb with the 4 speed auto used to pull into the redline (above 5000) when it was locked into 1st or 2nd but i was never keen enough to know what it would pull to...

Aussiblue · 02-12-2002, 05:37

MY NB also cuts out at 199 km/hr I suspect it's made that way because that's also the limit of the digital speedo. "But officer I was just testing the cutout limit...."

BOF · 02-12-2002, 16:38

guys, a MPI 3.9 and 4.0lt is limited at 5500rpm and not speed limited (ef onwards are 5750rpm) as for you NB being limited at 199km/h is it the typical speed limiter of the fact that a digi dash cant read any quicker, if you want to know how fast you are going to have to keep resetting the average speed on the trip computer.