Custom/Hybrid Matt_E's Superfreak Build
- Thread starter Matt_E
- Start date
OCD Solutions
Original, Clean and Dependable Solutions
- Location
- Rentz, GA
We are coming to the same conclusion with ScottS epic as well. These digital ignitions do not like any electrical noise whatsoever. Still trying to find the source on scotts ski but resistor wires, caps and plugs seems to be a large factor.
- Location
- South Florida
What do you mean by resistor caps and plugs? I only know of solid tops and screw top plugs and you guys are confusing me. Maybe I will learn something today.
OCD Solutions
Original, Clean and Dependable Solutions
- Location
- Rentz, GA
Tried tinfoil but it did not clear it up.
The tinfoil would have to be grounded in multiple spots and even then it's hit or miss. EMI shielding is a black art.
OCD Solutions
Original, Clean and Dependable Solutions
- Location
- Rentz, GA
Piece of cake for a Jedi master such as yourself right? Aren't you an electrical engineer? Enlighten us Obi-Wan. :biggrin:
I told Scott he would have better luck if he lined his helmet first. :bigok:
I've just seen my fair share of it. I used to work in a type testing lab that did quite a bit of EMI testing.
I've seen what it takes to shield cables carrying digital information from EMI interference. Test results could differ from one run to the next without changing a thing at all. Shielding is usually done with a grounded plane (the tinfoil), but it has to be connected to the power ground in multiple spots with very short wires. You're trying to provide a path to ground for the interference before it finds its way into the digital signal circuit.
Besides, the brain isn't the only thing that needs shielding. All wires entering and leaving the ebox must be shielded.
Because of this constant variance in shielding results, the best solutions are cutting down on the source of the EMI and increasing distance between the source and the circuit.
In other words: You won't be able to come up with decent, waterproof, consistent shielding for a watercraft ignition. Reduce the noise at the source and try to increase distance.
I've seen what it takes to shield cables carrying digital information from EMI interference. Test results could differ from one run to the next without changing a thing at all. Shielding is usually done with a grounded plane (the tinfoil), but it has to be connected to the power ground in multiple spots with very short wires. You're trying to provide a path to ground for the interference before it finds its way into the digital signal circuit.
Besides, the brain isn't the only thing that needs shielding. All wires entering and leaving the ebox must be shielded.
Because of this constant variance in shielding results, the best solutions are cutting down on the source of the EMI and increasing distance between the source and the circuit.
In other words: You won't be able to come up with decent, waterproof, consistent shielding for a watercraft ignition. Reduce the noise at the source and try to increase distance.
Last edited:
OCD Solutions
Original, Clean and Dependable Solutions
- Location
- Rentz, GA
I had an interesting related conversation with a guy who went back and forth with Advent over an SXR module. The end fix was to seperate the wires from all running parallel; some wires could only cross at 90° to each other. He couldn't recall the specific wires but typically in electrical installations, this usually means separating AC circuits and DC circuits as well as low and high voltages.
we'll test that theory at the beach. Solid wire with zero resistance, msd caps, non resistor plugs.
I'll try and boost the output...
Freakrider
X247
- Location
- Tampa Bay area
I have XScream porting and Chucky said non cut 35cc domes at 205 psi with 83mm bore was risky on 93 octane. I have a Craftsman's tester that seems accurate...Just info to consider.
No doubt, but this is LPW porting with raised ports, I will ck squish and comp when its installed.
Idok
F1pro
- Location
- Nations oldest muthaF+++kin city
yes unless the head/domes have custom squish
my screamer runs 205 PSI on 93 @ 83mm all day.......but again, the squish is set for it
D-Roc
I forgot!
- Location
- Dirty River Rider
I ran my 83mm with 94 octane which i hear tests higher than 94. proper squish. and 32 static upto 5500 rpm. i got 2 seasons and the topend is now on a buddies ski and still running. It is pretty much at the ragged edge but with proper tuning i never had a problem and it ripped!