Post by Rob Bell on Jan 19, 2005 11:43:54 GMT -5
As the Cheeky Cheap Cam project continues, I've been learning a little more about the differences between early (pre-2001) EU2 K-series engines and later (post 2001) EU3 motors...
As we already know (!), the EU3 K-series uses a wasted spark ignition system that dispatches the distributor from the end of the inlet cam.
The other difference is the way that the sequential fuel injection is timed - EU3 camshafts have a "reluctor" ring on them that interacts with a sensor to time the fuelling.
This reluctor ring caused me quite a fright when reading through the K-series workshop manual to make notes on the detail on how to remove the cam ladder etc - I found this phrase:
Camshafts fitted to later engines incorporate a reluctor ring, these camshafts are not interchangeable with those fitted to early engines. Commencing engine numbers for the modified camshafts are listed in information.
Yikes! But fear not: EU3 camshafts can be fitted to EU2 heads. However, the converse is not the case - because of that fuel injection sensor...
Other differences between EU2 and EU3?
Anything else missed from the list chaps?
As we already know (!), the EU3 K-series uses a wasted spark ignition system that dispatches the distributor from the end of the inlet cam.
The other difference is the way that the sequential fuel injection is timed - EU3 camshafts have a "reluctor" ring on them that interacts with a sensor to time the fuelling.
This reluctor ring caused me quite a fright when reading through the K-series workshop manual to make notes on the detail on how to remove the cam ladder etc - I found this phrase:
Camshafts fitted to later engines incorporate a reluctor ring, these camshafts are not interchangeable with those fitted to early engines. Commencing engine numbers for the modified camshafts are listed in information.
Yikes! But fear not: EU3 camshafts can be fitted to EU2 heads. However, the converse is not the case - because of that fuel injection sensor...
Other differences between EU2 and EU3?
- MEMS1.9 and MEM2J were both superceeded by MEMS3
- The fuel injectors dropped a size
- Wasted spark adopted for all ignition systems - so no more distributor
- Sequential fuel injection timed by the camshaft reluctor ring
- Coil packs move from under the inlet manifold to above the head (under the now plastic cam cover)
Anything else missed from the list chaps?