Thread: Utah Rally Sentra - Brace yourselves and don't hate. 2006 QR25DE swap w/ 6 speed

Greetings all, I have only posted a few times on this forum and now that my SER is fairly finished I thought I would post my "new member" stuff.

I am in Utah. I spent 11 years as a soldier fixing Apache Attack Helicopters. I have travelled a lot of places and hope to see more.
I have been racing SCCA RallyCross for 8 years now and would consider myself a fairly knowledgeable person in the Rally community.
I know my build will be controversial on this forum but I have raced SR - B13's and QR B-15's and I feel the QR has better things to offer for racing in the dirt and such. The B13 has superior suspension in comparison and is much lighter. I have combined the best of the things I love and have produced this monstrosity. It is fast, Fast is maybe not a good enough term for it. I launch in second gear and it digs at all RPM's. I love this thing. His name is Rockwell.
Here is his Build Albums link : https://www.facebook.com/media/set/?set=a.432215671560.204209.558556560&type=1&l=45289a3741
Here are some pictures from his first event: https://www.facebook.com/media/set/?set=a.10151650559361561.1073741827.558556560&type=1&l=8d01d7ca89



Here is a list of the modifications I have completed on him so far.
Chassis : 1991 Nissan Sentra SER
Engine: 2006 Nissan QR25DE
Head: Jim Wolf Technology (JWT) S1 Cams Intake and Exhaust; Multi Angle Valve job; JWT Racing Valve Springs; PCV Valve Removed; Valve Cover Vent into separate Filter not intake;
Internals: Nissan QR20DE Pistons (Raised Compression 11.5:1); Forged H-beam rods (brand unsure); JWT Balance Shaft Delete kit (Balance Shafts Removed);
Accessories: Under Drive Accessories Pulley; A/C Idler Pulley system;
Exhaust: Titanium Heat Deflector for Header; OBX 4-2-1 Header; Magna Flow 4” Round Race Muffler #14156; Thunderbolt High Flow Catalytic Converter; Dr. Gas Oval Exhaust tip
Intake: Modified Stock Filter box; 2006 MAF Sensor; Short 90 Degree Aluminum Tube with Couplers, Homemade Catch Can
Cooling: Koyo Aluminum Racing Radiator Part# V2469 (custom install for fitment); 2006 Nissan Sentra QR OEM Coolant tubes; 2006 Nissan Sentra OEM Radiator Fans; Heater Core Bypass; Throttle body heater delete; 1983 Toyota Supra Coolant Reservoir
Mounts: 2006 Nissan Sentra Motor and Transmission Mounts; Lower Cross Brace Mounts are Energy Suspension Solid Poly-Urethane Mounts
Engine Management System: 2006 Nissan Sentra SER Spec-V ECU, Reflashed with UpRev management and tuned
Transmission: 2006 Nissan Sentra SER Spec-V OEM 6-speed with OEM Helical LSD; 2006 Nissan Sentra OEM Axle Shafts; 2006 Nissan Sentra OEM Hydraulic Clutch system
Suspension: 40mm Hotbits Coilovers; 10” 275lb front springs; 10” 180lb rear springs with 3 inch 45lb tender springs; Energy Suspension Poly-Urethane Bushings in all suspension components; Front Strut tower brace; Rear strut tower brace; OEM rear sway bar removed
Brake System: 2006 Nissan Sentra OEM Master Cylinder ABS Option Edition; ASD-DP-1003 ASD Universal Hydraulic E-Brake (16" Pull-Back) with ¾” Pass through Master Cylinder (Wilwood); Summit Racing Brake Shut off valve; 1991 Nissan 300ZX NA Z32 Front 4-pot OEM Brake Calipers; 1991 Nissan 300ZX NA Z32 Rear 2-pot OEM Brake Calipers; Braided Stainless Brake lines; Hawk HPS Brake Pads 300ZX Front and rear; 2006 Nissan Altima Front Brake Rotors Custom machined for fit 26mm (Installed in front); 1994 Nissan 240SX Non-ABS Front Rotors 18mm (installed in rear); Brake Caliper spacers installed on all calipers; custom bent brake lines and fittings throughout system.
Body Modifications:
Bumpers: Front, 1991 Nissan Sunny GT-S OEM-JDM Bumper (modified with larger opening) with crash beam, Crash Beam modified for rigidity and radiator protection, aluminum grill inserts; Rear, 1991 Nissan Sentra OEM rear bumper, Crash Beam removed, bumper trimmed and installed flush with trunk lines
Hood: 1991 Nissan Sentra Fiberglass, “Invader” hood vent, Aero-Catch hood pins, 2006 Nissan Sentra OEM windshield nozzles
Front Fenders: 1991 Nissan Sentra VIS Fiberglass with Z3 venting Fenders; Z-Store Fiberglass 1976 Nissan 260Z Flares
Rear Fenders: Custom Tubbed Rear fender and wheel well area, Universal Fiberglass Flares
Right Side: Custom 2.5 oval exhaust outlet located behind passenger door above the rocker panel.
Trunk: 1991 Nissan Sentra Carbon Fiber Trunk lid; 1991 Nissan Tsuru GT-S Spoiler with 5 securing bolts
Roof: Bi-Directional Vent
Lighting: OEM Headlights removed, Grill insert or custom light bar; Quantity 8 Checkers 4” HID Pod lights, Custom wiring relay harness; Removed OEM third Brake light, LED third brake light mounted on rear window, Additional LED Rear blinkers mounted on rear window.
Interior: Heater Core & A/C System removed; 2006 Nissan Sentra OEM Dash Board (modified); 2006 Nissan Sentra SER OEM Gauge cluster (modified); All Electronic switch controls in car are custom installed; 2006 Nissan Sentra OEM Gear Shifter Linkage (elevated install point w/ Hydraulic hand brake); Spacro Circuit Pro Racing Seats, custom seating brackets; Sparco 215 Racing Steering Wheel; Momo Steering wheel adapter (Modified); Red Top Optima Battery, Summit Racing Optima Battery Aluminum Hold down; Custom Ground Wiring Harness; Summit Racing Brake Shut off Valve (Parking Brake), Sealed rear vent holes (Under Rear Bumper), Removed all OEM interior components, Custom Plastic door cards; 1996 Buick Rear view mirror; Terra Trip Brand Terra Phone Pro Intercom
Steering: 2006 Nissan Sentra power Steering Rack, custom Power steering hosing; 1996 Nissan Sentra inner tie rod
Electrical: All electrical harnesses are from a 2006 Nissan Sentra SER Spec-V, trunk harness is 1991 Nissan Sentra OEM integrated into the 2006 Nissan Sentra Harness; Napa Horn Assembly
Wheels: 15” Team Dynamics Rally 1 Forged wheels, White; D-Mack DMG2 Rally Tires Medium Compound. (snow option) Hankook I-Pike 15” on Motegi MR7 15” wheels
Miscellaneous: Front wheel hubs, 2006 Nissan Sentra SER hubs; Rear wheel hubs, 1993 Infinity G20 Rear Hubs; Fuel pump, 2006 Nissan Sentra SER spec-V OEM Fuel pump and filter system; 2006 Nissan Sentra Front Sub-frame Crossbeam modified to fit, Front clip extended downward to fit crossbeam; Passenger side frame rail in engine compartment is Notched for belt clearance


I have put a lot of work (4 years) into this car. It is purpose built, street legal and amazing. Please appreciate it for what it is.

Look forward to getting to know more of you on here.

Regards,
Jon

Very VERY nice!

Job well done!

I've always thought the QR25 was a good motor on paper, but for some odd reason for a japanese built motor it was poorly executed. Awesome job on the B13. Nice flares. No hate, just proof of a properly assembled QR can be just as reliable in motorsports as a SR is.

I bought a QR20 piston to gather information from and the skirt design is great, the piston is (or close to) near the same weight as a factory SR20DE or DET piston I think and they are 89mm. If I would ever do anything with a QR20, it would be a close to mirror image of your build, sir. While I agree they get a pretty nasty rap, they were purpose built for a commuter engine and besides the two major manufacturing/design flaws they had, the engine is not a complete wash. Enough about that, this is a neat car with a great purpose!

Kudos, congrats, likes, etc...

Now, any videos of some sweet mud-romping with the yellow beast, Rockwell for us to revel in?

Bad assness right there- awesome job dude! :-) More Pics!

This is a very cool car. "Bubs" has mentioned you and how fast this car is.
Great job,no hate here.very well thought out and put together.

Love the bumper

Dyno'd? Curious the whp output with your motor mods and bolt ons. The ol b13 is lookin stellar too 👍👍👍👍

YEAAAA rally B!3 looks rad man... ive bee nlooking for b13 fender flairs for ten years

Hate? Hell nah, that shit is rad!