Talk Morgan Forums Morgan Sports Cars Classic Morgans (pre-CX) Roadster S1 v S2

Careful Colin, your bluefin will contain your OE mapping, if you lend it out it will upload your standard map to the new vehicle & then save their map onto your handset, so you could potentially loose your OE data completely

What I love about this thread is that it's complete gobbledygook to me. I don't have a smartphone and I thought maps are for finding the way across Dartmoor in the fog, port is passed to the left, and bluefin is some kind of tuna, so my S2 Roadster won't be treated to a can of that anytime soon.

Probably my bad description, & I bow to your much deeper knowledge of the V6

I did think it had some form of variable cam phasing as each pair is driven by separate chains, allowing one pair of valves to have little effect until around 3500rpm, giving good economy at part throttle

As rpm increases above the economy level, the intake tracts open allowing the 4 valves to take effect with the ECU giving more advance via electronics and the cam phasing, hence the feeling of power & engine 'on song'

Am I close Simon ?

I think it was the more powerful Jaguar variant that had VVT and variable air intakes Jon. The ST220 engine had DAMB (direct acting bucket tappets).

Not quite...
That's sort of how the Jaguar version works- but its only phasing the cam timing rather than opening extra valves - although that said it does have valves in the inlet manifold that lengthen or shorten the inlet tract




The Jaguar engine is the one with direct acting buckets, The Ford engine has finger followers

Simon, while we've got you hooked on this subject

Going back to my original question, do you know what the fundamental differences are between the S1 and S2 engines.

We know the Jag version of the 3.0 Litre Duratec has quite a few differences such as VVT, variable inlet tract and bucket followers etc but I'm struggling to see a big difference between the Mondeo S1 engine and the S2 Escape engine.

I think the cams might be slightly different and the derating of the S2 is, I think, by and large down to increased emissions demand by re-mapping to suit the intended US market.

However, I can't see a major difference in the "architecture" of the engines and the re-mapping that Williams did on my S2 engine easily bought it back to the S1 power rating.

I think both engines were built at the Cleveland Ohio Ford engine plant.

To quote Jon, "am I close Simon"

Different cams, different inlet manifold, different throttle body I think..

The S1 Roadster also had a lot more development on the "Black Oak" engine management system to suit the Morgan

If I'm not mistaken the Mondeo engine has adjustable valves with tappets for better higher rpm and the Escape engine has hydraulic valve timing.

Nope , they’re both hydraulic lifters….

The answer to this question lies in whether Ford used the same engine Stateside on the Contour, Taurus and Escape cars.

If they did, then I'm pretty certain that the Series 1 and Series 2 Roadster basic engines are to all intents and purposes identical. Including the camshafts.

The big uncertainty in my mind is whether Ford modified the engine in the Escape compared to the Contour.

The Ford Contour engine ( i.e. the American Mondeo ) had different air intake, exhaust and more importantly different ECU mapping compared to the Engine shipped to Europe for the Mondeo. However the base engine was identical from what I can see from my investigations.

The US spec Contour had 201hp compared to the European Mondeo ST220 having 222hp which relates very closely to the Morgan S1 v S2 engines having 223hp v 201hp (could be translation differences between SAE or DIN etc).

The big difference is in the ECU and mapping which is why I think it's relatively easy to bring the S2 engine up to the S1 performance specs.

However all that goes out of the window if Ford US modified the Contour engine when they fitted it to the Escape but I'm still working on that question

For me, the next big question is what did they do to upgrade the engine in the S3 ????