Re: How do I edit the AFR tables in Tunerstudio?
Posted: Sat Oct 27, 2012 1:43 pm
This morning I hung a degree wheel on my crankshaft and took measurements off my valve retainer (and also rocker adjusters - specs however relate to actual valve travel, my rockers having a 1.39 ratio increase)
I was rather surprised at the results, but subesquent to some checking on popular web sites, I am now aware that the boxer cams options (with various additional offset gears) was a rather complex consideration for motorbikes.
I believe I have a stock cam that is 340degree duration, 104 degree lobe separation angle, and with intake opening @ 66btdc, closing @ 94abdc, and exhaust opening 94 bbdc, closing @ 66atdc. Lift seems rather generous @ 8.87mm (0.35"). I may have identified the wrong cam, but measurements were pretty much within the 2.5% tolerance.
Regardless, it has confirmed for me that the turbocharger and wasted spark are not compatable (wasted spark potentially igniting boost as intake valve opening way soon in scavenge cycle)
I'll be looking to integrate a cam sensor for sequential ignition (along with one of JB's "Dual VR conditioning boards for good measure
)
Lorne.
I was rather surprised at the results, but subesquent to some checking on popular web sites, I am now aware that the boxer cams options (with various additional offset gears) was a rather complex consideration for motorbikes.
I believe I have a stock cam that is 340degree duration, 104 degree lobe separation angle, and with intake opening @ 66btdc, closing @ 94abdc, and exhaust opening 94 bbdc, closing @ 66atdc. Lift seems rather generous @ 8.87mm (0.35"). I may have identified the wrong cam, but measurements were pretty much within the 2.5% tolerance.
Regardless, it has confirmed for me that the turbocharger and wasted spark are not compatable (wasted spark potentially igniting boost as intake valve opening way soon in scavenge cycle)
I'll be looking to integrate a cam sensor for sequential ignition (along with one of JB's "Dual VR conditioning boards for good measure
) Lorne.