Went for a ride in a friend's QR25DE-powered Datsun 510? Now you can have the same in your Datsun 1200

$799 QR25 02-06 QR25DE 2.5L LOW MILES! JAPAN IMPORT
* swap info: QR25DE Engine
* Use $400 MegaSquirt and a Frontier 5-speed


Need something with less HP? How about a bulletproof SR20?
$1250 S14 SR20DE 2.0L NON-TURBO W/5SPD MT, ECU WIRING
* Includes 5-speed, wiring and ECU

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  QR25DE.jpg (53.65 KB)


  SR20DE.jpg (51.51 KB)

Sounds good Dave but what are the gear ratios on the truck box and what does the trans and motor weigh? Granted the stock package in a 1200 would make it go really well. For me the big 1200 addiction is that snap turn in on corner entry.........I'd hate to give that up. Now granted if I start using my Formula car for vintage racing (it's an 87). I could free up the 1200 as a track day only car this would be a great package, 150-180hp on pump gas and not have to rev the nuts off the motor all the time.


Tom

A12 + 4spd = light weight. 69 HP
QR25DE + 5spd = medium weight. 175 HP factory stock

QR25DE weighs less than an SR20

A12: 192 lbs
QR: 267 lbs
SR: 306 lbs

56 4-speed (for A12): 38 lbs
71 5-speed (for SR): 96 lbs
R30A 5-speed (for QR): 119+ lbs, rated for 210 ft. lb.
R31A 6-speed (for QR): 130+ lbs, rated for 322 ft. lb.

There is a 2ltr version of the qr25de = 267lbs
It has shorter stroke crank around 80mm and is
supposedly due to crankshaft 12lbs lighter
30% shorter engines than the sr20 and 13% lighter
which if an sr20 bare is 100kg the qr25 is 13kg less.
However post 08 QR25de update is full counter crank
so would be a little heavier again 5lbs?
There a Jim Wolfe twin balancer delete removes 8lbs
No power steering pump -16lbs
No catalic converter aftermarket headers -16lbs?
lightweight flywheel and clutch JW 12lbs
UR underdrive crank pulley -3lbs
FWD engine mounting brackets and other brackets -8lbs

around 85-90kg dressed which is nothing

175hp + jim wolfe headers +12hp, balance delete +6-8hp
some s1 cams just under 200hp without much sweat
the stage 2 or 3 cams add another ???hp

Pity QR25DE dont suit the 1200 coupe retro lines ;(
if I had to choose Id save up for an sr20ve

Or you could get a Spec V QR25DE which is already 200hp factory warranteed (a lot more HP than the SR20DE Spec V). The 2007-2012 version is the bulletproof one. Earlier engines from 2000-2006 had various problems

cant deny the cost torque power per $ of the late qr25de spec V
super cheap recoed as well
http://esengines.com/2002-nissan-sent ... 5de-2-5-liter-engine.html

itbs custom setup
http://www.b15u.com/threads/13896-Qr-25-ITBs/page10

595usd for the QR20DE
https://www.jspecauto.com/engine_detai ... ement-qr20-motor-save-gas


front style sump bonus for the qr20de!


lower mani can be made to fit ITBs

How hard is it to find a 5spd tranny for one of these?

Very easy to find. Any USA Nissan pickup 2005-up 4-cylinder 2WD has it