P38 4.0 Litre in P6 ?
- Thread starter Jorgenson
- Start date
Sparky's engine is a 4L, cross bolted unit designed for the Range Rover. I think it's only the block and crank though, as the heads are stage 1 SD1 items, headers are bespoke but the P6 ones would fit, front cover is SD1 (I think 
), engine mounts bolt straight on so would fit ok, flywheel is SD1, etc.
The standard P38 4L isn't that powerful though, why are you changing it?
Richard
), engine mounts bolt straight on so would fit ok, flywheel is SD1, etc. The standard P38 4L isn't that powerful though, why are you changing it?
Richard
The P38 exhaust manifolds cannot be used as the design won't fit within the P6 engine bay. The flywheel is a straight fit onto the P38 crankshaft, but there is a locating dowel that you will need to grind off.
The HIF6 carburettors will need some changes, especially with the needles, along with larger air filters and an appropriate air canister.
Ron.
The HIF6 carburettors will need some changes, especially with the needles, along with larger air filters and an appropriate air canister.
Ron.
unstable load
Well-Known Member
Is there a reason for this, or is it aesthetic only?
My understanding John is that there is a clearance issue. The P38 front cover also includes an integrated crankshaft driven oil pump, with the filter facing straight down. In the case of the P6B and SD1 front covers, the oil filter being at an angle clears the cross member.
Ron.
corazon
Well-Known Member
It's not an issue if you use a remote oil filter like I have
You do have less off the shelf camshaft options, plus the reverse rotation waterpump, plus you need to sort out a coil pack ignition system. But the serpentine arrangement is better in many ways, oil pump, all steel timing gears as standard, it's shallower so there's more room for thicker radiators/fans etc etc.
Most people have reverse engineered to the p6 setup because they can use all the ancillaries as they were previously, alternator, power steering pump etc and therefore the car remains stock looking.
Jim
You do have less off the shelf camshaft options, plus the reverse rotation waterpump, plus you need to sort out a coil pack ignition system. But the serpentine arrangement is better in many ways, oil pump, all steel timing gears as standard, it's shallower so there's more room for thicker radiators/fans etc etc.
Most people have reverse engineered to the p6 setup because they can use all the ancillaries as they were previously, alternator, power steering pump etc and therefore the car remains stock looking.
Jim