Interesting Dyno results 2530 / setting up the tiing with a dial gauge
Had the car on the dyno the other day and seemed to run into some strange issues.
Ill start by explaining the setup:
Stock bottom end
Stock head with internal VCT mod ( expect has upgraded cam springs
Gt35 front wheel on a holset HX35 ( 12cm, 60mm inducer, 70mm exducer)
supporting mods for 350+rwkw
So the dyno sheet attached was the absolute peak the car made on 20 pound, it was a hot day with the ambient temp in the shed 40-50deg
however back to back runs showed the car lacking power each pull dropping to 280rwkw, and then even when letting the car cool it would not make the 300 again.
After mucking around with a few different ideas and finding that the VCT was not working we called it.
After doing ssome research on here its possible that the cam timing is out ( even though the marks are all pretty well lined up) its possible that due to tensioner placement, decked head and block etc that it could be quite out.
So my questions are:
does the dyno graph shape indicate the cam timing? ( what 2530 continues making power to 6800 with no drop off?)
and what degree to set the cams up using a dial gauge?
Any other suggestions?
Cheers