Report this postReply with quote Torque Converter on DIESEL P38A, making it more effi

HI All!

This time i search for your help on this:

Now that i have the power, i wanted to make the transmission more efficient on my RR. The thing is, the torque converter slips too much, making a lot of RPM for the intended speed... I have two options when driving:

the case being this:

Accelerate 'till the goal speed, lets assume 60kph:

Hit the gas, keep it in 3000RPM, and i am there in few seconds... OR

Hit the gas ( very gently ), keep it in the 2000RPM and take AGES to get there... ( if i am climbing something and keep it at 2000RPm, it will LOSE speed...)

If a acelerate more the engine speed climbs but there i'snt that thurst... or of i want fast progress i have the that it to 3000RPM, wait until the lock up occurs and then everything is ok. The problem is that the lock up only occurs in 3 gear at 60, or in 4 gear at 75... until there i'am making a lot of noise and not very much progress... oh! and obviasly waisting a lot of fuel...

Normaly i drive very slowly until the lock up and then on speed up.

I think this is a recorent problem with the diesel auto in P38s.

Now thinking of changing the torque converter, for one with a lower stall speed ( say 2000rpm ), has anyone done this?

Any opinions? Suggetions?

Many thanks

Cheers all! Oh.. and a nice 2009 everybody!!!

F

now that is a great idea, that would make the P38 diesels a lot calmer to drive! Must be something out there that would work!

does it not lock at a certain road speed like the classic one?

I thought it locked at a certain speed as well.
in my mind though UAto and performance don't belong in the same sentence.
That is why I will be searching soon for a Manual P38 Diesel - preferably in black with black leather.

Come on... Read before posting!!!

Rangexipê said:

wait until the lock up occurs and then everything is ok. The problem is that the lock up only occurs in 3 gear at 60, or in 4 gear at 75... until there i'am making a lot of noise and not very much progress...

Click to expand...

Obviasly it locks... The thing is, a like it to work better when it isn't locked!

For instance when driving within the city...

Can anyone help? My ideia is to change the Torque converter with a bigger one, maybe the one from the 4.6... Ashcroft transmission sells a KIT to do it, maybe someone have tried and may give a opinion...

Thanks!

F

rangexispê;669555 said:

Come on... Read before posting!!!

Rangexipê said:


Obviasly it locks... The thing is, a like it to work better when it isn't locked!

For instance when driving within the city...

Can anyone help? My ideia is to change the Torque converter with a bigger one, maybe the one from the 4.6... Ashcroft transmission sells a KIT to do it, maybe someone have tried and may give a opinion...

Thanks!

F

Click to expand...

yes read ye post thanks.Hence my reply.However i wil elaborate.The classic locks up at 54Mph. thats it no matter what gear yer in(altho dont wannan be going too quick in low gears!)
:whoosh: