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1993 Jeep YJ Wrangler - Red & Ready Wrangler

Posted in Features on January 1, 2009
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David Thompson of Plymouth, Michigan, has been an engineer all of his life. Now retired from Chrysler, he spends his time traveling North America to 'wheel his superb 1993 YJ Wrangler.

When we asked Dave for a list of his YJ's modifications, we received one. Boy, did we receive one. Dave sent a specification list only an engineer would produce. It describes his YJ much better than we ever could. While it was a giant PAIN to copy since all he sent us was an analog (paper) spec sheet, here it is:

1993 Jeep YJ Wrangler
Owner: David Thompson
4.6L OHV I6 W/Avenger supercharger
Bore and Stroke - 3.910x3.895
Compression Ratio - 9.3:1
Crankshaft - 4.2L crank (12 counterweight 1972-80)
Connecting Rods - 4.2L rods (5.874" 1972-80)
Pistons - .030 over
Intake Manifold - 2000 TJ
Exhaust Manifold - 2000 TJ (Jet hot Coating)
Air Cleaner - Mopar Part #P4510473 (washable)
Engine oil Cooler - Mopar Part #P4529690

Fuel System
91 octane required; 15-gallon YJ tank
Reinforced fuel tank skidplate
Hesco fuel pressure regulator set at 56 pounds
1995 5.9L injectors - Mopar Part #53030262

PhotosView Slideshow

Frame Rework
Removed transmission crossmember skidplate, spring mount brackets, front shock brackets,rear shock studs, left front shackle bracket, and rear track bar bracket from frame.
Installed Black Diamond transmission crossmember, front upper shock brackets, front trackbar bracket and rear cross member shock bracket.
Installed and dialed-in Black Diamond coilovers front and rear.installed Black Diamond long control arms using Black Diamond bracketry
Filled in shipping holes in left front corner of frame.
Fabricated track bar support bracket from right side of frame rail to track bar bracket.
Reworked track bar. installed 3/4-inch rod end to stop track bar binding.
Fabricated 1-inch spacers for the front engine mounts to improve rear prop shaft angle.
Reworked transmission mount for change in engine angle.
Power steering gear - Recirculating ball (DELCo 17:1)
XJ Power steering cooler
WJ Power steering pump - Mopar Part #52088378AC
Power steering pressure hoses - (Parts Mike Parts hose kit)
YJ Steering column with automatic intermittent wipers & tilt - Mopar Part #52078607
Steering wheel - 1994 Viper Part #o4642736
Hi- Steer linkage - (Warn kit)
Rock ready drag link, Quadratec Part #56118.501
Steering gear skid plate, (TJ Rework to fit YJ) - Teraflex Part #TF975+5
Rear sway bar - Currie Enterprises Antirock Part #CE-990102

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Chrome Grille - Quadratec Part #13031
Stainless steel hood latch kit - Quadratec Part #13006.33
MasterCraft grab handles
2-inch Body lift kit - Performance Accessories Part #932A
Xenon TJ fender flares
Durango 4x4 stainless rocker guards and side steps
OR Fab YJ Sport Cage Part #SBR095
Mountaineer rack - Quadratec Part #12038.300
Tomb Raider-edition front seatbelts
Off Your Rocker Panels rear corners

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Front Disc - 1993 YJ
Rear Disc - 2003 TJ
hydroboost brake booster
Fabricated master cylinder adapter to move hydroboost 25 degrees clockwise
Stainless brake hoses - Quadratec Part #22707.102
David built new park brake cables

Winch & Bumpers
Warn 9500-pound winch w/roller fairlead and 125-foot cable - Part #hS9500i
Winch mounting plate and brush guard - Quadratec Part #12518.52
Ramsey wireless winch remote
Front tow hooks
Rear tow hook (used BR front tow hook)
Currie Enterprises front Rock Crawler bumper
Currie Enterprises rear Rock Crawler bumper

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Cooling System
Cooling Capacity: 10.5 quarts
RXtreme 3-row radiator with integrated trans cooler - Part #1682-3Dh
WJ 2-speed electric cooling fan
Coolant temperature sensor lower hose - Mopar Part #56022391AA
Opened thermostat housing to improve flow
Robertshaw 180 degrees F Thermostat - Part #330-180

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Heater & AC
Mopar A/C 134a kit - Part # 82203023
Compressor - Mopar Part #55037359AB
Discharge hose - Mopar Part #55036271
Suction hose - Mopar Part #55036258
Serpentine Drive Belt - Napa Part #061066

TJ 32Rh 3 Speed Automatic with Lock-up Converter
Transmission rework by John Donato
Automatic transmission deep oil pan - Mopar Part #P4007886
Remote-mounted transmission oil cooler
Converter lock-up switch mounted on transfer case shift lever
Converter lock-up switch mounted on transfer case shift lever
(Cummins Exhaust Brake Switch)
Fluid type: AFT-4. Capacity: 17.5 pts - Mopar Part #o50134577A (qt.)

Transfer Case
NV 231 with TeraLow heavy-duty short shaft kit
QuadraTrac Lubricant - Mopar Part #o45499614 (qt.)

Rear drive shaft: Tom Wood's Custom Drive Shafts inc. - Part #131A2XL (18")
2000 TJ front drive shaft - Mopar Part #52098377AE

Front Axle
Dana 30 high pinion with 4.11:1 gears and ARB Air Locker
Fluid type: Synthetic GL-75W90 gear lubricant
Stainless Steel cover - Quadratec Part #12011.02
Diff Cover Gasket: Mopar Axle RTV Part #o5013477AA
Front axle cover guard - Quadratec Part #92023.001
Front axle shaft reworked for full circle 1 3/16 clips by Tommy Corrin
TJ Rubicon Front axle shaft U-joint - Part #o5083670AA

Rear Axle
Dana 44 with 4.11:1 and Detroit Soft Locker
Fluid type: Synthetic gear & axle lubricant 75W 140
Diff Cover gasket: Mopar axle RTV Part #o5013477AA
Stainless steel cover - Quadratec Part #12011.03

PhotosView Slideshow

Exhaust System
2000 TJ front exhaust Pipe - Mopar Part #52101173AA (with Jet-hot Coating)
Resonator (Export) Mopar Part #52005199
Muffler - Supertrapp Part #SUP-443-2217 (Summit)
Tail Pipe between resonator and muffler fabricated by Dunn Fabricaton

Tires & Wheels
Wrangler MT/R 35x12.50 R15 LT Goodyear
15x8 aluminum American Racing AR-23 wheels
CJ lug nuts - 1/2x20 chrome with 13/16 head

48-inch hi-Lift jack with cover
Seat Savers seat covers - Quadratec Part #14272.31
Bestop bikini top
Bestop Windjammer
Bestop deck cover
Bestop trail cover
Bestop center console
Mopar window storage bag
Currie EZ Tire Deflator
Optima Blue Top battery
Arm rest pads
Cobra CB radio with K40 Model 30 magnetic mount antenna
Mopar engine oil temperature & transmission oil temperature gauges

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