I looked into the QR25 engine for my 510 racecar.

The QR25 is used in the Nissan Frontier Pick-up here in the States. The engine blocks are the same FWD or RWD, so the Frontier RWD transmission will fit any QR25 engine. I would immaging the QR20 is the same block as the QR25, so a US market 5 speed "bellhousing" gearbox case should fit any S15 or other nissan RWD gearbox.

Yeah the heavier boxes from nissan will fit but I would prefer a w57 toyota box at 35kg.

Flab or Weight is the enemy!

http://www.sr20forum.com/turbo/145741 ... l-pics-fire-up-video.html

qr25de with sr20de crankshaft!!!! didnt know they fit!?

sr20de crankshaft is full counterweighed.

What happened to the kiwi qr?

A de-stroked QR25DE? There is a factory QR20DE in Japan.
Lighter than SR20DE -- and more HP!

The QR20DD produces 150 hp (110 kW) with NEO direct injection
* 2000-2004 Nissan Bluebird Sylphy

Most QR20DE are 147HP
2001-2007 Nissan X-Trail T30 (140 hp)
2001-2007 Nissan Primera P12
2002-present Nissan Serena C24, 145 hp (108 kW)
2003-2008 Nissan Teana J31, 145 hp (108 kW)
2001-2005 Nissan Wingroad Y11
2002-2005 Nissan Avenir W11
2001-2004 Nissan Prairie M12

SR20DE is 140 HP.

RWD transmissions are plentiful here in USA, but expensive since they started in 2005.

Yes the reasoning is they are the same block but the qr has longer rods
and shorter stroke with the same bore. However using the SR20de crank
gives the extra insurance for extra high horsepower and rpm.
Combine the 2 and you have the best nissan head and bottom end.
Hence this guy calls it the SQR20DET :)