jamesmartin
Well-Known Member
yes serp engine has better water pump cools both side more equally the earlier pump
jamesmartin
Well-Known Member
blocks are all the same ,so are the cranks, front cover along with ancillaries and inlet manifold are different
jamesmartin
Well-Known Member
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.
jamesmartin
Well-Known Member
they dont feel like td5 ,i mostly us std cam on 3.9 efi for normal towing etc,unless something special needed,
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.
jamesmartin
Well-Known Member
true i must have been thinking about 3.5 and early 3.9 cranks been the same
