Talk:McLaren M838T engine

horsepower/co2

The Koenigsegg Agera R has a higher horsepower/co2 ratio than a MP4-12C, can't find any official specs for P1. The Koenigsegg has more horsepower/co2 by quite a large margin, when assuming 737/279 User_talk: 85.228.65.134 17 Feb 2014

To be fair, McLaren made the claim in 2009. Newer models are general expected to surpass older models. We should add that it was true in 2009.

Do you have a reference for the hp/co2 figure for the Koenigsegg Agera R?  Stepho  talk  05:24, 17 February 2014 (UTC)

http://www.koenigsegg.com/models/agera-r/#the-engine states 329 co2, for 1140 horsepower that ends up with 1149/329=3.46 — Preceding unsigned comment added by 85.228.65.134 (talk) 18:55, 17 February 2014 (UTC)

Koenigseggs current car by 2009 had a slightly larger horsepower/co2 than the McLaren, 806/368=2.19, which they had already in 2006.

Compared to McLarens 600/279=2.15 in 2011 (or 2009, in which their claim was made).

Stroke, compression, etc

How does a Wiki article on an engine not contain numbers for stroke, compression etc.? I just calculated 70 mm for stroke. Can sb. confirm?

--Felix Tritschler (talk) 09:12, 3 February 2016 (UTC)

We can only add numbers that we have reliable references to or can figure out with simple calculations. Using a bore of 93 mm from the article and your stroke of 70 mm then we get a capacity of 3804 cc, which is higher than the stated capacity of 3799 cc. My calculation says the stroke should be 69.9 mm (probably the same calculation you used but with an extra digit) to give a capacity of 3798.6 cc, which rounds to 3799 cc. Which shows why we have to be careful about inserting our own figures. Luckily I found a reference on McLaren's own website at http://cars.mclaren.com/650s-spider-specification that says the bore is 93 mm and the stroke is 69.9 mm, so we can be confident that the 93 mm was not rounded off. Feel free to update the article for a stroke of 69.9 mm.

Compression is trickier because it is probably different for each application of the engine. If you can find suitable references then feel free to add the figures to the article.  Stepho  talk  03:04, 4 February 2016 (UTC)

External links modified (January 2018)

Hello fellow Wikipedians,

I have just modified one external link on McLaren M838T engine. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:

• Added archive https://web.archive.org/web/20150402104723/http://media.mclarenautomotive.com/release/204/ to http://media.mclarenautomotive.com/release/204/

When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 5 June 2024).

• If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
• If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—InternetArchiveBot (Report bug) 16:33, 23 January 2018 (UTC)

A Commons file used on this page has been nominated for speedy deletion

The following Wikimedia Commons file used on this page has been nominated for speedy deletion:

• McLaren Automotive Logo.svg

You can see the reason for deletion at the file description page linked above. —Community Tech bot (talk) 03:36, 17 April 2019 (UTC)