will an auto box from a 4.0 petrol work for a 2.5 diesel?

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
Its a BIG NO NO im afraid, both gearboxes are differant (ive tried), ring Emmotts of colne near skipton... £250 ish for a good diesel box... pm me if you want the number...
 
the hooded claw said:
Sorry Tony but I think he's right yer know ... the 4.0 (HP22 box) is exactly the same as the 2.5 Diesel box the HP24 (from a 4.6 is bout 2 inches longer & DEFFO will not fit a Doosel!!)
Click to expand...

I did say, I THINK. I was also under the impression that the torque converter is larger on the petrol engines. Must be wrong. Senility is a wonderful thing. I think.:D:D:D
 
it is also a slightly different valved box as well and a different bell housing and torque convertor
 
Think i was trying to say the 22 will fit the diesel the 24 won't. But still say the petrol engine has a stronger torque converter.
 
Last edited:
i rang them earlier and i got a blunt "NO" they wanted £1325 for a box delivered and would refund me £500 upon me retuning my old box delivered at my own expense at around another £100. i think thats a bit over the top
 
The torque converter is definately different between the petrol and diesel. If you can fit the diesel torque converter to the petrol box, and I can't see why not, then it should be OK. Need to check that the gear ratios are the same tho.
 
P38_Ireland said:
i rang them earlier and i got a blunt "NO" they wanted £1325 for a box delivered and would refund me £500 upon me retuning my old box delivered at my own expense at around another £100. i think thats a bit over the top
Click to expand...

Then it looks like your into an experiment. If the box is the same 4HP22EH there must be a part number or designation number that changes the bell housing and torque convertor. I cannot see why you could not use the diesel bell housing and torque convetor on the 4.0 box. However the larger (i believe) torque convertor from the petrol may not fit inside the diesel bell housing. I honestly don't know time to either get a proper box from a diesel with all the same numbers as yours or bit the bullet.
 
Datatek said:
The torque converter is definately different between the petrol and diesel. If you can fit the diesel torque converter to the petrol box, and I can't see why not, then it should be OK. Need to check that the gear ratios are the same tho.
Click to expand...

According to RAVE the ratios are the same for all Diesel, 4.0 and 4.6. The only difference is the designation 4HP24EH for the 4.6. Funny old world ain't it? So according to that he should be able to swop bell housings and torque convertors and be ok. But who knows.
 
wammers said:
According to RAVE the ratios are the same for all Diesel, 4.0 and 4.6. The only difference is the designation 4HP24EH for the 4.6. Funny old world ain't it? So according to that he should be able to swop bell housings and torque convertors and be ok. But who knows.
Click to expand...

There you go, Wammers has found the last piece of the jigsaw, off you go and lets us know if it all went well (or not as the case may be):D
 
You must log in or register to reply here.

Similar threads

T
Auto Box Wont stay in Gear
Replies
11
Views
614
Graculus
Graculus
D
P38 in need of some love
Replies
7
Views
919
stuu
stuu
O
Help needed with 03 L322 DSC/ABS ECU coding data /BMW Toolset 32
Replies
0
Views
637
oldradiotech
O
ar1g3
P38A P38 rattle at idle
2
Replies
26
Views
4K
roythebus
R
steveshone
p38 fuse box following conversion from petrol 4.6 to diesel 2.5
Replies
7
Views
2K
mystery
mystery
Back
Top