P38A Zf4 hp24 input shaft!!

Mark Piercy said:

Right then, after seeing our mate @Datatek last Sunday I am now the owner of a zfhp24 box.
After comparing a couple of things the input shaft and oil pump drive are different lengths.
Now the question...
Can both the input shaft and oil pump shaft be taken from zfhp22 and transplanted into the hp24 box.
Another option is to bolt my oil pump and input shaft assemblies onto the hp24 and check the dimensions against the HP22 for the torque converter
Anyone got any info?

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MrGorsky said:

We are well out of my pay grade here... but RAVE does mention that the 24 is longer than the 22... but I have no idea where this extra length comes from. Pictures though....obvs.

View attachment 335401

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Mark Piercy said:

15mm longer my mate. I did think about using my own pump and input shaft and possibly the tail piece (yet to be verified)

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Mark Piercy said:

Right then, after seeing our mate @Datatek last Sunday I am now the owner of a zfhp24 box.
After comparing a couple of things the input shaft and oil pump drive are different lengths.
Now the question...
Can both the input shaft and oil pump shaft be taken from zfhp22 and transplanted into the hp24 box.
Another option is to bolt my oil pump and input shaft assemblies onto the hp24 and check the dimensions against the HP22 for the torque converter
Anyone got any info?

Click to expand...

Grrrrrr said:

I think @ovalandrover did this swap to one of his.

Some of the HP24 boxes are supposed to be a straight swap but I think the general opnion on here is that some need the input and oil pump assembly swapped over. Never tried it though.

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marjon said:

I thought the 24 needed the bigger pump to run the higher pressure needed in the clutches.
Not sure if it can be run with the 22 TC or you need the bigger 1. Which doesnt fit in the diesel bellhousing but the intermidate size TC does, not sure which 1 yours runs.
Also I believe that the internals can be swapped but only after a certain serial number, which again I belive its the internals from the shorter box not the long 1.
This is all dragged from my foggy recollection when I was reserching the subject so may not be 100%

But a quick mail to Ashcroft would give you all the info you need.

J

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marjon said:

I thought the 24 needed the bigger pump to run the higher pressure needed in the clutches.
Not sure if it can be run with the 22 TC or you need the bigger 1. Which doesnt fit in the diesel bellhousing but the intermidate size TC does, not sure which 1 yours runs.
Also I believe that the internals can be swapped but only after a certain serial number, which again I belive its the internals from the shorter box not the long 1.
This is all dragged from my foggy recollection when I was reserching the subject so may not be 100%

But a quick mail to Ashcroft would give you all the info you need.

J

Click to expand...