Hi guys.
I need to check a few things.
I purchased some advance engine software that can calculate the engines HP, without dyno tuning it. It will hopefully save me a lot of time and money, because I can try different mods and get a predicted dyno output in a couple of minutes. I can run hundreds of simulations in a day, which will take me months and heaps of money to do in real life.
I have a whole host of questions and wonder if anyone has some of the info I am looking for.
One of the question I would like to start with is the rocker arm ratio.
The software seems to indicate that most rocker arms are between 1.3 to 1.8.
If I measure the intake rockers I get a ratio of 1.12 and the exhaust is 1.17. Is this right???
I took the distance from the centre of the rocket shaft to the middle of the rocker "pad" where it runs on the cam, divided by the distance from the centre of the rocker shaft to the centre of the "pad" pressing against the valve.
Maybe I measured it incorrectly, so correct me if I am off the mark here.
Has anyone got the stock 660 cam specs?
I need intake and exhaust lift, duration, centreline, opening and closing degrees.
Then, do you have the same info on a stage 1 or stage 2 hotcams? I have a bit of the hotcams specs, but I am missing the opening and closing degrees. I contacted Hotcams for the info, and they where no help. They sent me the info on the web, which I had anyway.
I need to check a few things.
I purchased some advance engine software that can calculate the engines HP, without dyno tuning it. It will hopefully save me a lot of time and money, because I can try different mods and get a predicted dyno output in a couple of minutes. I can run hundreds of simulations in a day, which will take me months and heaps of money to do in real life.
I have a whole host of questions and wonder if anyone has some of the info I am looking for.
One of the question I would like to start with is the rocker arm ratio.
The software seems to indicate that most rocker arms are between 1.3 to 1.8.
If I measure the intake rockers I get a ratio of 1.12 and the exhaust is 1.17. Is this right???
I took the distance from the centre of the rocket shaft to the middle of the rocker "pad" where it runs on the cam, divided by the distance from the centre of the rocker shaft to the centre of the "pad" pressing against the valve.
Maybe I measured it incorrectly, so correct me if I am off the mark here.
Has anyone got the stock 660 cam specs?
I need intake and exhaust lift, duration, centreline, opening and closing degrees.
Then, do you have the same info on a stage 1 or stage 2 hotcams? I have a bit of the hotcams specs, but I am missing the opening and closing degrees. I contacted Hotcams for the info, and they where no help. They sent me the info on the web, which I had anyway.