The Val

[VL400]

Yeah I think it is a combo, and the module is an unknown - ripped the entire loom, ECU, dizzy and throttle body out of a Camira with a blown HG/cracked head.

The reluctor noise is an issue for sure as the square wave reference signal is not clean - its a pretty basic conversion so *should* be a feed in clean get clean out kinda thing. Will most likely just get a crank trigger setup working properly rather than try and sheild the dizzy reluctor. Once that parts working will see how it all goes.

[delcowizzid]

you arnt having issues with short intake runners are you.last week while tuning the vb we had a part throttle miss when stalled ready to launch was due to me having narrowpulsewidth mode set to high and the rpm being high enough that we were not getting fuel in some cylinders sounded like we had launch control on must of been robbing gas from some cylinders and feeding it down other cylinders adjusted MPW mode lower and she roared into life like never before

[VL400]

Not really considered that, they are short runners so its possible. Single pulse certainly helped idle quality. Wideband shows AFR ok (only on each bank, not wealthy enough for 8 oxy sensors) and its only at around 6k RPM it misses badly - its ok at light throttle and idle, but its a monster cam so its hard to hear minor cyl imbalance at idle.

[delcowizzid]

our miss was not seen on wideband either it was good and safe on the fuel ratio and didnt really change when i flipped the setting but it sure ran better just thought ide suggest it as a possible

[VL400]

Will have a play next time its running, def worth a shot

[VL400]

Installed a MSD flying magnet crank trigger instead of the home made one - balancer was an iron alloy, while it was ferrous just didnt have enough meat to be able to get big enough slots and a reliable signal. So now its a wheel with embedded magnets and a non-magentic sensor (opposite to a regular setup).

IMAG0133.jpg (65.81 KiB) Viewed 4740 times

Only fired it up briefly as there was no radiator installed but testing looks promising. Scope showed perfectly clean signals everywhere and timing light confirmed it was stable, time will tell though when we hit the track next season. Engine will be removed for a freshen up along with a new intake and fuel rail setup before then

One interesting thing was it wouldnt start with the crank trigger. The ECU was detecting RPM (150RPM), injectors were firing (plugs were dry though) but it wouldnt start. TP showed a stable RPM trace the whole time. Went back to the dizzy reluctor pickup, left the fuel pump turned off and cranked it over - shitty looking RPM signal and all over the show. Turned the fuel pump on and it fired right up. Connected the crank trigger back up and it ran sweeeet I think that with all the noise on the dizzy reluctor the injectors are firing heaps more often than normal and we are getting more fuel than expected - when going to the 42lb injectors have cranking PW tables that are less than 25% of the original factory tables.

[vn5000]

Have you tried reving it up much .
I hooked a camira module up to my pitbike with the intention of then injecting it and it had the same sort of pickup for cdi,(a small 5mm round knob passing an inductive pick up) and it started and went fine till it got to about 3500 rpm then the spark would die out .Because of the very small pulse width from the pickup , the camira module was not giving the coil enough dwell to make a spark.
I was going to make a plate for my 5.0lt crank and mount a pickup with a camira module like you as well and came up with this design for a 50% duty cycle sine wave.

[VL400]

Only took it to 4k and was fine still. Dwell is ecu controlled once running using an ecu so the only concern we had was that the ref pulse width was wide enough to trigger the ecu, have to wait a few months to test that properly to 7500rpm.

[vn5000]

Dwell is ecu controlled once running using an ecu .

Ha ha
Maybe theres hope for the delcoed pitbike yet then.

[vn5000]

Tried hooking the camira module on the pit bike up to an 808 this arvo,
and vl 400 was right .It revved to 6000 rpm no probs ,but with the camira module only it starts to miss around 2500 rpm.It controls the dwell very well considering the short pulse width from the ruluctor..