Optimum speed to change gear

[2424]

Hi,

I have short wheelbase high top camper with a non-turbo 2.5Di. Would be interested to know what road speed is best to shift up the gears without over revving the engine as I have no rev counter. The van is driven once every 2-3 weeks and normally I shift into 2nd at 10mphr, 3rd at 20mphr and so on with the exception of 5th at around 45mphr+ or else it takes forever to get up to cruising speed of 55-60mphr.

Thanks,

[MinorMatt]

well that depends on what you are trying to achieve.
as well as:
gradient
condition of the road
condition of the engine
weather
weight of the vehicle
diff ratio
tyre size
how much pressure is in the tyres
etc
etc
so you arn't going to get a meaningful answer

You can't over-rev the 2.5di If you want to get up to speed quicker, possibly even saving some fuel, why not think about fitting a turbo? Transits arn't the most aerodynamic things in the world - especially the high tops, so you shouldnt expect a rocket ship. Also... have a look at this viewtopic.php?f=18&t=3968

[ake]

You'll do it more harm changing up early and making it labour than you would making it rev a bit!
Ignore the actual speed you change up at, and change when it feels right. You could easily add 5 mph to the speed of each change without doing it any harm.

There are many old Dis out there that only ever got changed up a gear when the engine got to the rev limiter at 4000 rpm! And it hasn't done them any harm.

[Mfr]

So I'm being unnecessarily wet not going above 3200rpm

[MinorMatt]

revlimiter is 4250rpm Ake

[KevAmiga]

I change when it wont go any faster in the gear im in... simples

[ake]

revlimiter is 4250rpm Ake

Is there not 2 figures Matt, one under load and one not?

[ake]

So I'm being unnecessarily wet not going above 3200rpm

Yes

[blue estate]

So I'm being unnecessarily wet not going above 3200rpm

Yes

Pussey footer

[Mfr]

So I'm being unnecessarily wet not going above 3200rpm

Yes

Pussey footer

[ricc]

been out and about in my lwb semi high top today...lightly loaded with tools, mower etc. in 4th at 20mph and 5th at 30 mph on the flat.,
i work mainly in a 5 mile radius of home so theres little point rushing around.

[Jim Archer]

A good thraping every now and again never does any harm.

Jim

[blue estate]

A good thraping every now and again never does any harm.

Jim

Does a good thrashing do as well

[Punto443]

If they weren't ment to be revved up, then they wouldn't go up!

Gee it some welly

[taz666]

drive it like you stole it