VE 1/4 mile times only data base. - Part 1

[etrocket]

Thanks for clearing that up - would you need to rev to 6800 with that dyno sheet?

[mentallydull]

Etrocket - that's my question. It's hard to extrapolate that graph out to 6800.

[mentallydull]

Muncha - ive sent you a msg to your youtube. I am unable to PM on here as I dont have 20 posts yet.

[mentallydull]

DREADVE - sorry for the confusion however please disregard the rpm numbers on the dyno graph as they are incorrect (as told by my tuner). The km/hr is correct on the graph, so on the graph 215km/hr isnt actually 6210rpm, it should be 5800rpm.

[whitels1ss]

DREADVE - sorry for the confusion however please disregard the rpm numbers on the dyno graph as they are incorrect (as told by my tuner). The km/hr is correct on the graph, so on the graph 215km/hr isnt actually 6210rpm, it should be 5800rpm.

Yes I think your sheet has a fault, but No buddy, with a stock 3.46 diff behind a 6 speed manual .....
As quoted on your dyno sheet 215 kmh would be around 6500rpm.

If you have a close look at your dyno sheet you will also notice thet the speeds and kph ratios are about the same all the way up (EXCEPT the last number, which I agree is wrong.)
the graph with 175kph@5560rpm, 195kph@6140rpm untill the last line at 215 kph.... the rpm speed should have gone up more than 70rpm for that extra 20kph.

Here is a link to a page with speeds and diff gears, I know it was about earlier models but I think your rolling diameter should be around the same so it should be close...

check out post number 9 for the 3.46 diff with 6 speed manual. (4th gear is still 1-1 ratio AFAIK)


http://www.ls1.com.au/forum/showthre...-11-diff-gears

Think about it, there is no way the car could travel at 215kmh in 4th gear in a manual at 5,800rpm and with your camshaft the engine should pull a strong 6500rpm anyway. Cheers.

[mentallydull]

Yes I think your sheet has a fault, but No buddy, with a stock 3.46 diff behind a 6 speed manual .....
As quoted on your dyno sheet 215 kmh would be around 6500rpm.

If you have a close look at your dyno sheet you will also notice thet the speeds and kph ratios are about the same all the way up (EXCEPT the last number, which I agree is wrong.)
the graph with 175kph@5560rpm, 195kph@6140rpm untill the last line at 215 kph.... the rpm speed should have gone up more than 70rpm for that extra 20kph.

Here is a link to a page with speeds and diff gears, I know it was about earlier models but I think your rolling diameter should be around the same so it should be close...

check out post number 9 for the 3.46 diff with 6 speed manual. (4th gear is still 1-1 ratio AFAIK)


http://www.ls1.com.au/forum/showthre...-11-diff-gears

Think about it, there is no way the car could travel at 215kmh in 4th gear in a manual at 5,800rpm and with your camshaft the engine should pull a strong 6500rpm anyway. Cheers.

I've had a look at that thread, and also calculated my rolling tyre size to be 2132mm. In the diff gear thread they have based everything off 1990mm. So at any given rpm my car would be going faster due to a larger tyre. 2132 / 1990 = 1.071. From the diff gear thread top speed in 4th gear is 214km/h (6200rpm) so therefore my car would be going slightly faster than that due to large tyre. 214km/h x 1.071 = 229km/h @ 6200rpm. If we do a quick calculation to work out what rpm my car is doing at 215km/h we would come up with 5820rpm (6200rpm / 229km/h x 215km/h = 5820rpm). This matches with my speedo of 37km/h at 1000rpm on the road.

Sorry to get into all the maths and complicate things but I am still sticking by my theory that my dyno chart stops at 215km/h which is equal to 5820rpm.

Having said that, thanks for pointing out that the dyno graph rpm numbers aren't going up in equal amounts.

[Muncha]

Muncha - ive sent you a msg to your youtube. I am unable to PM on here as I dont have 20 posts yet.

Sent you a pm, cheers.

[whitels1ss]

DREADVE - sorry for the confusion however please disregard the rpm numbers on the dyno graph as they are incorrect (as told by my tuner). The km/hr is correct on the graph, so on the graph 215km/hr isnt actually 6210rpm, it should be 5800rpm.

Reading this post of yours again, I reckon your tuner might have said or meant 6,800rpm and not 5,800 rpm at the top of the graph.

Edit... Yeah that adds up
using calculator if previous graph point on the dyno sheet is correct ie 195kmh @ 6140rpm ... 195kmh divided by 6140 = 0.0317589 then if you multiply that again by 215(kmh) you get 6828.1635(rpm)
So it must be 6,800 rpm at 215 kmh

[Tre-Cool]

Thread is for 1/4 figures, not chit chat...

[mentallydull]

whitels1ss - read post #171, it is me replying to one of your previous posts - it needed approving because im a new member and has only just popped up

[Muncha]

Muncha - ive sent you a msg to your youtube. I am unable to PM on here as I dont have 20 posts yet.

Did you race last night?

[Roonstain]

I attempted to race last night........didn't even get a full run in.........

[mentallydull]

Did you race last night?

Unfortnately no, I ended up too busy to head out. Will get out again as soon as I have the time!

[Muncha]

Muncha - ive sent you a msg to your youtube. I am unable to PM on here as I dont have 20 posts yet.

Did you race last night?

[mentallydull]

Good night at WSID. Beautiful weather.

Put some softer springs in the rear of my ute and dropped the tyres to 27psi giving me a 13.0 @ 172km/h (2.0 60ft)
Pretty happy with the improvements on the night. Knock another 10th or so off the 60ft and it'll be running the times I expected. Speed is still low which is a mystery however it's going back on the dyno to do a power vs rpm plot so will be interesting to see what power it makes on a new dyno (same brand, same operator).

My 09.5 SS Ute
OTR
Extractors
High flow cats
3" cat back
25% UDP
Mild cam
Aftermarket clutch
Rip shifter
Stock tyres on 19" SSV wheels @ 27psi
326 RWKW
663nm

13.0 @ 172km/h
2.039 60ft