madmikeismad
So mad
- Joined
- Dec 19, 2009
- Messages
- 14,347
1.9l vw block, electronic ve pump. Who thinks 30* on the high end would be safe? I've never really thought about timing vs displacement before.
Lol that's true. Nearest one worth a damn is 2 hours away.I have no idea, but a day on the dyno would tell you pretty quick.
I'm curious about this as well, but opposite, a larger displacement engine. A 672 cid, 12mm p-7100, 15:1 compression running around 3000RPM, is at 40* and feels like it would like more, but I'm too chicken to up it any further. I was always under impression that timing was RPM related. My 5.9 would not like 40* at only 3000RPM.
aren't the VE VW's IDI or am I stoned?
does that come into play with timing limits?
1.9L@25* 5.9@36-38* 11L@40* seeing a trend-longer stroke=more timing?
MadMike, let me know if I'm hijacking too much.
Leiffi, let's say fuel systems are similar (p-7100 mechanical), for the 5.9 and 11L? I can move the 11L from 34-40* and barely notice a difference. On the 5.9 that same movement is huge. Why? Also, I assume your 12L is a modern common rail or unit injection?
The 11L has a 6inch stroke. Thanks Leiffi, I'll try the transducer near the injector and see the difference, our lines are 96cm. With our pull class, bottom end isn't a factor. Great info folks!
it has more todo with stroke of crank then anything. Smaller stroke crank can run more timing as the Piston is moving "slower" think of a 2" stroke vs 6" stroke and keep timing the same.
If I wasn't on my phone I would figure out the distance the Piston have left to travel between the 2 that will help you understand the amount of timing you can run.
I'll try the transducer near the injector and see the difference, our lines are 96cm.