Serpentine and Non Serpentine

I am replacing the engine in my Disco 1998 3.9 Serpentine. I have another engine which is not a serpentine but is a 3.9 Hotwire(same as the original). Will the Serp crank and front end fit onto the other 3.9 engine?
Thanks.

yes serp engine has better water pump cools both side more equally the earlier pump

Sorry, but want to be sure that I am clear on this.Are you saying that the crank and timimg covers etc will all fit on the other block to make it a Serpentine?

blocks are all the same ,so are the cranks, front cover along with ancillaries and inlet manifold are different

all bits to convert one to the other just bolt on

Thats good news. Many Thanks for that. Any idea on camshafts? I usually just tow a boat that weighs about 1 tonne inc trailer etc. I was thinking of the Torquemax. I borrowed my neighbours Range Rover 2.5DS(BMW engine) yesterday to recover a Disco. It was shocking how awful it was as a tow vehicle. I really struggled on the slightest incline. Surely there must be something wrong with it...but it is the first time I have driven one of them.

they dont feel like td5 ,i mostly us std cam on 3.9 efi for normal towing etc,unless something special needed,

jamesmartin said:

blocks are all the same ,so are the cranks,

Click to expand...

Not quite true, although the crank from an early (non-serp) 3.9 is long enough to drive the oil pump it is not sufficiently long to also engage the crankshaft damper keyway (interim 3.9 serp). The camshaft is also held inplace by a thrust plate on an interim block.


also late interim (serp) engines have the bosses for cross bolting but where not drilled.

true i must have been thinking about 3.5 and early 3.9 cranks been the same