355 misfire when engine is hot? ignition wire reroute shows some relief.

355 P4 · Feb 5, 2024

355 P4 said: ↑

I am jumping into this old thread from the 355 COP chat because I am interested in the coils on the 360. But first, my approach to the plug wire "togetherness" issue. When I saw the spark plug wires passing through the small hole at the back of the cam cover and continuing on together to each plug, I was concerned enough to put standoffs under the spark plug cover and rerouted the wires a bit. This also ventilated the valley that the wires were in (See photo).
BUT next I sat 8 IGN-1A GM/Mercury Marine coils over the plugs (required drilling holes through the Ferrari cover plate but the plug wires are MUCH shorter, not near any heat source and not lying on one another.
I am now considering Coil on Plug instead of Coil Near Plug and have found the Bosch equivalent Ferrari 360 coils but, I don't know much about them (do Coil on Plug units have internal igniters [drivers]) etc. I have fooled with a Coil and a plug in my living room and it seems difficult to pull the coil off the plug. I looking to hear of people's experiences with pulling these coils in order to change plugs etc. The plug connector seems designed for the nose on plug as well as the exposed threaded stud. Any
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355 P4 · Feb 5, 2024

355 P4 said: ↑

I am jumping into this old thread from the 355 COP chat because I am interested in the coils on the 360. But first, my approach to the plug wire "togetherness" issue. When I saw the spark plug wires passing through the small hole at the back of the cam cover and continuing on together to each plug, I was concerned enough to put standoffs under the spark plug cover and rerouted the wires a bit. This also ventilated the valley that the wires were in (See photo).
BUT next I sat 8 IGN-1A GM/Mercury Marine coils over the plugs (required drilling holes through the Ferrari cover plate but the plug wires are MUCH shorter, not near any heat source and not lying on one another.
I am now considering Coil on Plug instead of Coil Near Plug and have found the Bosch equivalent Ferrari 360 coils but, I don't know much about them (do Coil on Plug units have internal igniters [drivers]) etc. I have fooled with a Coil and a plug in my living room and it seems difficult to pull the coil off the plug. I looking to hear of people's experiences with pulling these coils in order to change plugs etc. The plug connector seems designed for the nose on plug as well as the exposed threaded stud. Any
Click to expand...

355 P4 · Feb 5, 2024

The end of my thread was supposed to say " Any information/experience with the 360 CoP units would be appreciated. Here's the photo of my "standoff " ventilation and wire separation effort and a current photo of my CnP arrangement.
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355 P4 · Feb 6, 2024

fatbillybob said: ↑

I think that is a good idea. Seeing that others report seeing the crossfire in the dark I would expect as much if not more with the valve cover lid off and wires jammed in the channel. At the very least getting some space will allow you to take Goth's good idea one step further and help the wiring under the cover. Goth needs to fab some kind of perforated metal standoff spacer that the OEM cover screws on top of sort of like a chimney cap.
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I bought 1/4" aluminum bushings from ACE HARDWARE and JB Welded to the back of the plug wire cover plate to keep them in place while I reinstalled the plate. This let me separate the wires a bit more and provides cooling as well. I live in S. California and don't drive the car alot so water ingress isn't much of an issue. I have moved on to CnP arrangement as seen in page 4 of this thread though. The plate still stands off, I just don't have to worry about separating the wires.
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taz355 · Feb 6, 2024

I like that on your car but would not want it on mine.
I think it adds to the P4

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355 misfire when engine is hot? ignition wire reroute shows some relief.

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355 misfire when engine is hot? ignition wire reroute shows some relief.

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