Talk:Nissan QR engine

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QR20DE[edit]

One question: 157HP??? Is this Dyno tested?

QR25DE[edit]

The engine HP and wheel HP measured via a dyno never match. And, in addition, taking the posted HP/torque of 175/180 and the loss figures of 19% for a manual transmission and 28% for an automatic transmission we get the following numbers (HP/torque):

Manual: 141.5/145.8 Automatic: 126/129.6

So, the results via independent tests are actually above expected via calulations. —Preceding unsigned comment added by 209.22.76.30 (talk) 17:36, 10 July 2008 (UTC)

Don't forget that blown head gaskets are also a major problem in 2002 and 2003 versions of this engine. —Preceding unsigned comment added by 184.12.247.19 (talk) 09:18, 4 March 2011 (UTC)

QR25DE Manufacturing, design, and assembly flaws section[edit]

For the oil consumption statement I think it's worth mentioning that the QR25DE (pre 2007) oil consumption problem was resolved through a dealer recall reprogramming the engine control module. See these links for evidence.

http://www.motortrend.com/cars/2006/nissan/altima/recalls/ http://www.nissanextendedwarranty.com/recalls/recalls.html?year=2006&make=NISSAN&model=ALTIMA&submit=Submit

I would suggest this section needs to be revised to reflect this information, as currently the section implies that the oil consumption issue was resolved by a new engine — Preceding unsigned comment added by 216.16.236.14 (talk) 18:16, 27 February 2012 (UTC)