Re: Distributor question
Posted: Thu Nov 03, 2005 2:38 pm
Hi Martin,
I was trying to apply some rational reasoning into the timing issue. No were did I mention any values which I thought would be okay. It would have been nice if you had asked me first before appyling your own numbers and then judging the situation by those.
Here we are in agreement. It's prone though to exhibit quite a lot to stiction and hystersis if it's lubrication neglected.
Rohan,
You see the logic here obviously. You're the special case were a racer does care about extracting 100% of the power from the engine at all times.
I've been doing quite a bit of experimenting with the timing curves but I lack a dyno to measure any torque values. When the carburetion is delivering a steady mixture and no matter what the operating conditions and 10 degrees retarded the engine still runs just fine. At least I find this to be the case in the retarded direction though it's noticable it's down on power at WOT. The challenge is to get the engine to not ping or detonate with the lower octane fuel available today and stay close to the MPT. It helps a bunch to have a knock sensor!
I was trying to apply some rational reasoning into the timing issue. No were did I mention any values which I thought would be okay. It would have been nice if you had asked me first before appyling your own numbers and then judging the situation by those.
The distributor is a mechanical bodge, albeit a relatively good one.
Here we are in agreement. It's prone though to exhibit quite a lot to stiction and hystersis if it's lubrication neglected.
Rohan,
You see the logic here obviously. You're the special case were a racer does care about extracting 100% of the power from the engine at all times.
I've been doing quite a bit of experimenting with the timing curves but I lack a dyno to measure any torque values. When the carburetion is delivering a steady mixture and no matter what the operating conditions and 10 degrees retarded the engine still runs just fine. At least I find this to be the case in the retarded direction though it's noticable it's down on power at WOT. The challenge is to get the engine to not ping or detonate with the lower octane fuel available today and stay close to the MPT. It helps a bunch to have a knock sensor!