Originally Posted by
John_M_
keep in mind these CDi's are referenced to crank rpm in the program coding, referencing off the cam will change the ign advance timing...
I was aware of that...
Originally Posted by
John_M_
I think one of the reasons it won't idle very well is, there is a lot of internal resistance, especially on the piston rings, Ol jonnyQ nearly broke the first one putting in the ring groove, made a horrible crapping sound as he pushed the piston into the cylinders, I suspect those rings will take forever to bed in. Possibly a bit more mass on the flywheel will help the idle
I was indeed a bit surprised how he mangled that ring pushing it over the crown, that is not how I fit piston rings...
He also fitted the pistons into the cylinder dry, or so it looked to me. Also something I would not do.
Originally Posted by
John_M_
You'll have to stagger the magnets and hall sensors so they are on their on plane of rotation.. I forgot these inline 4 CDi's use both magnet poles and the "dual" hall sensor.
Actually, no... I should be able to run only two magnets (one North and one South) in the same plane, and fit the sensors 90 degrees to one another.
A bit like this. If Cylinder 1A is in TDC, so should be cyl 2B. These two cylinders should be connected to the northpole firing leads of ignition one. Cyl 3B and 4A should be in BDC and be connected to the southpole firing leads of igition 1
90 degrees of crankrotation further, cyl 1B should be in top together with 3A, those should be connected to the northpole firing leads of Ignition 2. Cyl 2A and 4B should be in bottom and connected to the southpole firing leads of ignition 2
No biggie. I have done that kind of thing before. All that needs to be done is checking whether the cams are in such position that when Cyl 1A is in firing position, Cyl 2B should be in scavenging position. If that is not the case, one camshaft should be rotated 180 degrees under the belt.
Originally Posted by
John_M_
Adding CDi alone will improve the running characteristics of that engine, those glow plugs get extinguished easily with the wet fuel.
Especially in the location where the plugs are, they are basically in the wettest spot of the combustion chamber....