GU 2.8 pulling 4600 rpm at 110kmph

4600 rpm in 5th gear in my GU IV with 33s and I'd be doing 218 kph !!! Haven't seen that sort of speed since my old Greg Norman Statesman.

Even a 4.2 with 4.6's and 33's won't get to 3000rpm at 110. A 2.8 won't bolt to a 4.2 or 3.0 box so can rule that out. If it's revving at that at 110 you would be shifting gears like nothing else before getting to 5th lol

As evil twin said if the clutch is slipping and these revs have been held then it would now be cactus and now not be functioning lol.

I know if at 3000rpm most diesels do sound like they are fairly revving.

Gotta agree, Cobber...

OP was fairly adamant the revs were genuine but I'm not convinced yet. The 2.8's get their tacho feed from a sensor in the fuel pump don't they?

OP has the car back with the yard ATM so I guess we wait and see what happens next...

Mine 2.8 sits at about 2800-3000ish at 100km/hr and that is with 285s

Thanks guys it's at the workshop now getting a new water pump so once they can drive it I will update you on what happens