I have a similar problem. I found it to be lack of buzz as Derek suggests. I
actually fixed it while fixing another problem, which was the inability of the
alternator to charge while running heaps of stuff (radio, heater, lights, wipers,
fuel pump, thermo). I fixed it by unplugging the thermo because it was incorrectly
wired with no relay (dodgy I know) and was chewing 2/3volts!! thank god it is
winter. got to get a relay in there by summer :)
zac
>Ashley,
>
>>I'm having a problem with my dato going above 150kph.
>Try 180+, they call off the chase above 160 or so :)
>
>>1st gear to 7000, 2nd to 7000, 3rd to 7000, 4th to 6000 and >stops pulling
>and if you look at the tacho at this point its >bouncing from 5000-7000. If
>you keep your foot flat it slowly >drops away.
>>
>>I originally thought it was the dizzy(points), So I replaced it >with the
electronic
>out of the Bluebird Series II, this did >help as before it would stop pulling
>at about 5000.
>>
>>Any clues???
>
>Maybe just the limitations of the ignition system. Usually an L-series dizzy
>will become a bit 'jiggly' at those sort of rpm, i.e. the advance becomes unstable
>( generally tends toward less advance, which is fortunate ). To get really
screaming
>rpm in an L4 you might need to go to crank-fire ignition, as even the S2 Bluebird
>ignition relies on the dizzy/oil pump shaft to spin it.
>Sounds like your plugs just aren't getting enough juice to burn the intake
charge
>properly - the energy-per-spark from your coil also suffers at really high
rpm.
>Since your tach runs from the coil, the odd tach behaviour points to an ignition
>problem.
>
>I'd check everything from coil wiring to spark plugs looking for a weak point.
>
>
>DF
>
>
>
>
>
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