We spoke to one of the Dyno Dynamics guys earlier in the year, when we were sorting out our dyno, about a shoot out at the comp. He said it costs DD about AUD$100k to do Summer Nats and although it...
 |
|
|
|
|
|
|
|
Type: Posts; User: woollymoof
We spoke to one of the Dyno Dynamics guys earlier in the year, when we were sorting out our dyno, about a shoot out at the comp. He said it costs DD about AUD$100k to do Summer Nats and although it...
We cut the sump volume by 600ml and still filled it with 3.5L of oil.
We noticed we were only get surge on right hand turns - oil goes to the left, the pick up is on the right of the engine/sump. ...
the F4i engine manual has the following specs at 1mm (0.04") lift
Intake
Open: 22 degrees BTDC
Close: 43 degrees ABDC
Exhaust
Open: 38 degrees BBDC
Close: 7 ATDC
We've measured the lift as...
True, you wouldn't have all four cylinders on the intake stroke at the same time, but even if you did the flow bench would no way near represent the flow in the plenum. Pulling on all four runners...
I've looked for other posts on this but can't find any.
What sort of numbers are people getting on the flowbench for their intake, for one runner and all four?
Our bench can't go above 17"H2O,...
I've looked for other posts on this but can't find any.
What sort of numbers are people getting on the flowbench for their intake, for one runner and all four?
Our bench can't go above 17"H2O,...
Big Bird,
When do you need to know by?
Hi all,
Does anyone know any figures of the percentage of oil from the pump that goes through the presssure relief valve, when fully open?
Try measuring at 1mm lift or 50thou. It's a common way to determine duration. If the largest angle in your data is 360degrees, double the duration figure you get and that will give you duration in...
Younger students can do research and design proposals on parts of the car for one of their design subjects in third year. That doesn't mean what ever they do gets on the car, it probably won't the...
We've tested it in the engine. Flow varies linearly from 0.17kg/s at 3100 RPM to 0.69kg/s at 9700 RPM
We have an after market thermostat (not running it though), opens a couple of degrees C earlier. But unless you have an efficient enough cooling system to bring the temperature down below that of...
I'd be careful just running the diffuser in the analysis and assuming the results will correlate with the whole intake. It depends on your intake but I have seen vastly different flow patterns...
It was the intake cam. That's enough work as it is. You can probably find gains in adjusting the exhaust.
Big G,
If you mean blip throttle (not ignition coil) then Suddenlee is right, its illegal. If you mean cut the ignition on up changes, you can do this with a signal from your paddle to your ECU,...
We made a 90 degree elbow with appropriate stops to prevent the valve from popping out or moving under acceleration.
You could possibly cut the pipe, I can't advise on it though and you would have...
Hi All,
The cost report says that only end items should be listed in the BOM.
Appendix A-3 lists how the systems and components should be organised in the cost report. But these two do not...
Hi All,
The cost report says that only end items should be listed in the BOM.
Appendix A-3 lists how the systems and components should be organised in the cost report. But these two do not...
We've done duration and lift. Last year was a reduction in duration and increase in lift, doing something similar this year. We designed the basic dimensions, ie lift and duration, on Virtual 4...
Still got problems.
Would you have to replace the clutch disks when replacing the oil, even if they look ok, because they'd been soaked in the dodgy oil?
Thanks guys,
We did a clutch a couple of months ago with maybe 10 hours of dyno work, the engine was from a wrecked bike. I didn't realise what was happening straight away so when we took the...
Has anyone ever had trouble with the clutches in their engines slipping on the dyno?
If so, what did you do to prevent it?
Has anyone ever had trouble with the clutches in their engines slipping on the dyno?
If so, what did you do to prevent it?
Hi all,
Just curious as to what sort of ramp up rates you're using when doing power runs on the dyno?