Timeline for Negative ignition timing vs valve exotherm temperature
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 3, 2019 at 0:05 | comment | added | rollsch | This is only used to spool a turbo off the line. So its under load and for a few seconds at most. By firing the ignition very late I was hoping we would avoid killing the valves as the fuel would combust in the turbine opposed to on the edge of the valve. | |
| May 2, 2019 at 10:19 | comment | added | Steve Matthews | Absolutely, I'd suggest as much as possible to take head away. Bigger oil cooler, alloy finned sump, alloy finned rocker cover, cut a slat in the bonnet near the windscreen, incant the trailing edge of the bonnet upwards, etc, etc. | |
| May 2, 2019 at 10:15 | comment | added | Solar Mike | So, depending on the engine, the OP may have to provide better head cooling as well... | |
| May 2, 2019 at 10:13 | comment | added | Steve Matthews | Lancia used sodium filled valves on their Integrale WRC (and 16v road) cars. They're about five times the price of standard valves. It's one of the only differences between the Thema 16v Turbo and Delta 16v Turbo engine. | |
| May 2, 2019 at 10:09 | comment | added | Solar Mike | Merlin engines used sodium filled valves... | |
| May 2, 2019 at 9:55 | history | answered | Steve Matthews | CC BY-SA 4.0 |