VN Lexcen Series I Acceleration

[Pretender]

I am not looking for any arguments I am just posting results achieved with a Datron Correvit L3 on the weekend (equipment belongs to my brother's mate's mate). This equipment is 13 years old but was last calibrated in August 05 so must be close to being correct as times are similar to what I have achieved before. Except for the 0-100 which is the quickest I have recorded down from 7.96.

My car: 89 VN Lexcen Auto, Gas Conversion fitted 1989, 254000km.
No mods other than grinding to allow 100% open throttle and removing the spare tyre. Checked chip and from all accounts it is the standard chip. Have not fitted my homemade CAI yet. I have replaced a faulty cat recently also.
Ran on regular ULP.

0-10=.86, 0-20=1.21, 0-30=1.86, 0-40=2.71, 0-50=3.32, 0-60=3.95,
0-70=4.84, 0-80=5.82, 0-90=6.76, 0-100=7.87, 0-110=9.10, 0-120=10.35
0-130=11.71, 0-140=13.70, 0-150=15.70, 0-400m=15.62@148Km/h

On gas: 0-60=4.18, 0-80=6.30, 0-100= 8.97, 0-400m=16.55@134km/h

I reckon these are good times for a stocky.

Also of note is the fact that my car will now kickdown to first at 55km/h and hold it to 70km/h and on gas it will kickdown to first at 60Km/h and hold it to 70Km/h. It never used to do this above 50Km/h on either fuel.

I know, I know the equipment may be faulty and all that crap but it has consistently runs similar times using at least three different timing setups.
I will take it to the Motorplex and see what time I get.

[greenfoam]

My VN Lexcen is the exact same car, with only the throttle open mod (and a thinnned down shaft) a CAI with the stock chip can run 15.55 on my gtech, Mine has 280,000 on the clock but without the extra weight of the gas setup. Your time may be slower at the drags due to reaction time but yeah I think everyone understands by now that a VN Berlina with a fully opening throttle will run 15.6 and do it all day, the Executive would of course be a little faster . your 0-60 mph time would be about 7.25-7.3 something which is very very close to what mine can do with the standard chip

[Pretender]

Hi Greenfoam
What I find most interesting is the 91.96mph over 400m. I had no wheelspin though and my car ran perfectly. Yes I agree, Motorplex time will vary with the reaction time, not by too much I hope.
Since the new cat, plugs and airfilter it will chirp the tyres on the change from first to second on gas on anything but the stickiest surfaces. Seems to develop a lot of power high in the rev range on gas but gives no impression of increased acceleration over petrol though once moving the acceleration on gas is very close to that on petrol now.

[Blown V6 Hatch]

OK, big misconception about reaction time. The reaction time is the amount of time it takes the driver to react from the lights go green to tripping the beams to start the clocks. Reaction time will not affect your 1/4 mile time what so ever. You can sit on the line for as long as you like after the lights have gone green and you will still run the same e/t as you would if you took off straight away because the time does not start untill you break the start line beams! Also .400 is the quickest reaction time you can get as any quicker will result in a red light, for the perfect reaction time you should take off on the last amber light so by the time you react the light is green. The brain takes .400 to react hence .400 being the perfect reaction time. Trust me i have been drag racing and have read time slips.

[CSL]

see i think alot of times can differ as diferent perseption i.e 0-60mph means it's the time it takes to get the car moving at 100k/ph, but also their can be 100m's in X amount of seconds either way,

my car has a CAI, pod in box, v8 throttle body, stainless steel intake pipe, bellmouth removed and rear mufler replaced with strait through muffler, and i can cover 100m in 7.33 secs, and i ahvent done quarter mile in a while

oh vn s2

[greenfoam]

OK, big misconception about reaction time. The reaction time is the amount of time it takes the driver to react from the lights go green to tripping the beams to start the clocks. Reaction time will not affect your 1/4 mile time what so ever. You can sit on the line for as long as you like after the lights have gone green and you will still run the same e/t as you would if you took off straight away because the time does not start untill you break the start line beams! Also .400 is the quickest reaction time you can get as any quicker will result in a red light, for the perfect reaction time you should take off on the last amber light so by the time you react the light is green. The brain takes .400 to react hence .400 being the perfect reaction time. Trust me i have been drag racing and have read time slips.

Ok that's good to know, so if you start from as far back from the beams as possible, your allready moving pretty quick when the timer starts?

[Pretender]

see i think alot of times can differ as diferent perseption i.e 0-60mph means it's the time it takes to get the car moving at 100k/ph, but also their can be 100m's in X amount of seconds either way,

my car has a CAI, pod in box, v8 throttle body, stainless steel intake pipe, bellmouth removed and rear mufler replaced with strait through muffler, and i can cover 100m in 7.33 secs, and i ahvent done quarter mile in a while

oh vn s2

Never timed my car over 100m before so I gave it try today. Hand timed with a stopwatch only though. Measured out 100m (and in three tries on petrol got 6.67sec, 6.72 and 7.28(wheelspin) on gas backfired and stalled, started it up and did 10.78secs, didn't try again. I'll have to do it properly sometime as these figures are probably not that accurate.