DiscussWorldIssues - Socio-Economic Religion and Political Uncensored Debate - View Single Post - Any theories on the strange McLaren-Mercedes exhaust note?

**Roorseprate** · 08-31-2010, 08:11 PM

Ignition retardation? That would melt the exhausts unless McLaren found something with the ECU?

http://scarbsf1.wordpress.com/2010/0...teams-q3-pace/

Of course this gain doesn’t come for free, the heat of combustion now takes place in the exhaust port, so that the exhaust valve, cylinder head and exhaust pipe all suffer excessive heat. This will affect them, as they cannot withstand this sort of thermal load for long periods. Equally the process burns additional fuel, in the race this is a negative thing as fuel is limited and no refuelling is allowed.

08-31-2010, 08:11 PM	#19
Roorseprate Join Date Oct 2005 Posts 659 Senior Member	Ignition retardation? That would melt the exhausts unless McLaren found something with the ECU? http://scarbsf1.wordpress.com/2010/0...teams-q3-pace/ Of course this gain doesn’t come for free, the heat of combustion now takes place in the exhaust port, so that the exhaust valve, cylinder head and exhaust pipe all suffer excessive heat. This will affect them, as they cannot withstand this sort of thermal load for long periods. Equally the process burns additional fuel, in the race this is a negative thing as fuel is limited and no refuelling is allowed.
	Quote