AUSTRALIAN X-TRAIL FORUM :: Engine Mechanical :: Engine Upgrades FAQ

Australian X-Trail Forum Engine Mechanical
Engine Upgrades FAQ

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Terranismo Profile
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Date Registered: 10-2004
Location: Panama
TOTAL POSTS: 46

Engine Upgrades FAQ

This is a list of engine modifications or upgrades that are available for the Nissan Sentra SE-R Spec V. This car uses the same QR25DE engine as the Nissan X-Trail and therefore, most (if not all), of these upgrades can work on the X-Trail with little or no modification.

Intake

AEM Cold Air Intake
AEM Short Ram Air Intake
Hotshot Cold Air Intake
Injen Cold Air Intake
Intense Motorsports Cold Air Intake
Jim Wolf Technology Pop Charger
K&N Typhoon Intake System
Nismo R-Tune Cold Air Intake
ProCarParts Cold Air Intake
Stillen Cold Air Intake
Stillen Hi-Flow Intake
Stillen Hi-Flow Pop Charger
True Flow Cold Air Intake

Camshafts

Jim Wolf Technology Camshafts
Nismo R-Tune Camshafts

Header

AEBS Header
DC Sports Header
Hotshot Header
Jim Wolf Technology Header (rebranded Hotshot)
Kamikaze High Temp Header
Nismo R-Tune Header (w/o Catalic Converter)
Nismo R-Tune Header (w/ Catalic Converter)
OBX Header (Hotshot copy)
SS Autochrome Header (Kamikaze copy)
Stillen Gen-2 Header (w/ downpipe)

Pulley

Impulse Mechanisms Lightened Aluminum Underdrive Crank Pulley
Southwest Autoworks Lightened Aluminum Underdrive Crank Pulley
Unorthodox Racing Ultra S Lightened Aluminum Underdrive Crank Pulley

Balance Shaft Remover Kit

Jim Wolf Technology Balance Shaft Removal Kit
Stillen Balance Shaft Removal Kit

Intake Manifold Gasket

Hondata Intake Manifold Gasket
Next Gear Thermoshield Intake Manifold Gasket

Fuel Management

SSR Fuel Managment System
Stillen Fuel Management System (QR-Pro)

Grounding Kit

Apexi Grounding Kit
Autoworks Grounding Kit
HKS Grounding Kit
Sun Automotive Hyper Grounding System
Sun Automotive Hyper Voltage System
Stillen Grounding Kit

Exhaust

Addict Type 1
Addict Type 2
Aiba Works Awzerex
Elford B-Spec
Fujitsubo Legalis R
Fujitsubo Wagolis
Ganador Vertex SUS
HKS
Impul Blast Muffler
IPF Prespeed
Jaos BattleZ
Kakimoto Racing
Nismo S-Tune
Nissan NA
Nissan Rider
RSR ExMag
Suxon Racing SV
Trust Power Extreme
Verio V.S.D.M.

Turbo Kit

Dream Works Racing Turbo Kit (220whp)
FIR Turbo Kit (200-264whp)
PowerTech Imports Turbo Kit (234-265whp)
SSR Intercooler
SSR Turbo Kit (250whp)
SSR Turbo Starter Kit (turbo not included)

Misc

Caspers Electronics SES Light Bypass (usually experienced after header upgrade)
Ferrea Valvetrain
Jim Wolf Technology Pop Charger Oil
Jim Wolf Technology Valve Springs
NGK Iridium Spark Plugs

---
2003 X-Trail S/T AWD 5-Speed: E/DP/TA/KS/I/H/MMI/TB/BSR
Pics Here!
*"Nismo" Reservoir Covers, Oil Cap, & Oil Catch Can on the way*

24/Oct/2004, 1:01 pm

ManuelGA Profile
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Date Registered: 10-2004
Location: Mexico
TOTAL POSTS: 28

Re: Engine Upgrades FAQ

Please don't try to turbocharge QR25DE or even QR20DE's, they are open deck engines & can't support well the added pressure.

Sparks I'll also recomend NGK platinum, take a look at www.sparkplugs.com

---
My 2004 X-Trail is FWD / QR25DE / LHD

3/Nov/2004, 5:10 pm

Terranismo Profile
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Date Registered: 10-2004
Location: Panama
TOTAL POSTS: 46

Re: Engine Upgrades FAQ

Well Manuel in B15sentra there are several QR25DEs holding up to 6.5-8psi of boost rather well (267whp) with the PTI or FI-R turbo kits. There are currently two Spec Vs pushing out more than 400whp on built engine and an automatic SE-R with 300whp.

There has been new parts updates as well. There is a destroker kit with a SR20DE crank and pistons which N/A pushes the QR to 250whp.

---
2003 X-Trail S/T AWD 5-Speed: E/DP/TA/KS/I/H/MMI/TB/BSR
Pics Here!
*"Nismo" Reservoir Covers, Oil Cap, & Oil Catch Can on the way*

4/Nov/2004, 5:45 am

Terranismo Profile
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Date Registered: 10-2004
Location: Panama
TOTAL POSTS: 46

Re: Engine Upgrades FAQ

Well I've done the following upgrades already:

AEM Cold Air Intake
SS Autochrome Header
Jim Wolf Technology Balance Shaft Remover Kit
Custom Exhaust
Custom Midpipe
Timin Advance to 17 degrees BTDC
Knock sensor grounded
66mm overbored Throttle Body
Energy Suspension Polyurethane Motor Mounts

Upgrades on the list this month:
Hondata Intake Manifold Gasket
Impulse Mechanisms Pulley
Faktion Short Shifter
Jim Wolf Technology Camshafts

---
2003 X-Trail S/T AWD 5-Speed: E/DP/TA/KS/I/H/MMI/TB/BSR
Pics Here!
*"Nismo" Reservoir Covers, Oil Cap, & Oil Catch Can on the way*

14/Jan/2005, 11:46 am

blackxtrailgt Profile
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X-TRAIL ENTHUSIAST

Date Registered: 12-2005
Location: Northern NSW
TOTAL POSTS: 103

Re: Engine Upgrades FAQ

quote:
Terranismo wrote:
There has been new parts updates as well. There is a destroker kit with a SR20DE crank and pistons which N/A pushes the QR to 250whp.

WTF? The SR20 has a 86mm bore, whereas the QR has a 89mm bore... The SR crankshaft will NEVER fit into a QR as the bore spacings are completely different, the main bearing points are different, the timing chain gear and oil pump drive are different... TOTALLY different motors.

---
Nissan X-Trail GT ~ SR20VET, producing 253Kw@wheels on 15psi and living with my uncle(its new owner) on the Sydney North Shore :D

ME?:
Smashed Twin Turbo VY SS Ute work hack
Heavily modified VQ35 powered N14 Pulsar - 350Hp@front wheels

18/Jan/2006, 3:40 pm

basshead Profile
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X-TRAIL HOLIC

Date Registered: 02-2004
Location: Panania, Sydney
TOTAL POSTS: 2852

Re: Engine Upgrades FAQ

Perhaps he meant QR20DE?

---
Rich. X-013(c)
'04 S2 ST Auto. Nudge_roofracks_tow_tints_Lightforce_GME_YokoGeoA/T-S_TBS_bashplate_50mm-spacer-lift
Click here to see >300MB of photos and videos All For His Glory.

18/Jan/2006, 4:55 pm

blackxtrailgt Profile
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X-TRAIL ENTHUSIAST

Date Registered: 12-2005
Location: Northern NSW
TOTAL POSTS: 103

Re: Engine Upgrades FAQ

Hey Rich,
I don't think that is the case here...

Fitting the QR20 crank & pistons with QR25 conrods would result in the piston extending a couple of 'mm above the block deck height. Fitting QR20 crank, conrods & pistons to a QR25 block would result in a QR20 emoticon

Definitely not 250whp from a <2.5L QR

Terranismo: How did you adjust your ignition timing setting to 17 degrees??

19/Jan/2006, 10:03 am

AKAK9 Profile
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X-TRAIL ENTHUSIAST

Date Registered: 01-2006
TOTAL POSTS: 133

Re: Engine Upgrades FAQ

There are some pretty scary items on that list.
Balance shaft removal kit? (good way to make an engine die a short death) Pulley kits? (ditto)
Might be good on a high revving race engine but I'd be dubiuos on something like an Exy.

Even the cams I'd be wary of. The QR25DE is lumpy enough on idle.

To me the easiest way of getting a bit more grunt would be headers, filter and a good flow job. A blower would be ok as well but only if the deck was closed. (not a particularly easy job).

I've only had my Exy for about 750kms now and already I've had a look down the inlet chambers. A simple cleanup of the inlet would definately make an improvement as they were pretty rough. The throttle body to plenum chamber is miss-matched, which also benefit from a smoothing out. (oh boy the missus is gonna hate me!)

11/Feb/2006, 10:43 pm

Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 6360

Re: Engine Upgrades FAQ

Hey AKAK9,

What have you done to your intake since this last post ?

I've done the full exhaust and now wondering what could be done to the intake apart from a CAI.

---
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25/Jan/2007, 4:05 pm

Snailtrail Profile
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X-TRAIL NEWBIE

Date Registered: 03-2023
TOTAL POSTS: 11

Re: Engine Upgrades FAQ

quote:
blackxtrailgt wrote:

Hey Rich,
I don't think that is the case here...

Fitting the QR20 crank & pistons with QR25 conrods would result in the piston extending a couple of 'mm above the block deck height. Fitting QR20 crank, conrods & pistons to a QR25 block would result in a QR20

Definitely not 250whp from a <2.5L QR

Terranismo: How did you adjust your ignition timing setting to 17 degrees??

SR20DE crankshaft and custom rods have been fitted to a qr25de before the 07
engine came out and sleeved also by 2j performance, they achieved 800+hp reliably
https://www.2j-racing.com/2jr-fully-built-qr25-engines.html

5/Jun/2023, 5:23 pm

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