The Suzuki LT250R was a sport ATV manufactured between 1985 and 1992. It combined a lightweight frame and good handling, with a 249cc liquid cooled two stroke engine.
Commonly known as the Quadracer, it revolutionized the (ATV industry).[citation needed] Before this model was released, the ATV world was dominated by three-wheelers. Although the four-stroke LT250E Quadrunner was released a year earlier, it was not well accepted by racing enthusiasts that were hesitant to adopt the heavier four-wheelers over their three-wheelers. Then came the LT250R.
Most of the advances made by Suzuki with this quad have been overshadowed by the Honda TRX250R, which was released in 1986. During these early years though, they were treated as equals, with the Honda being preferred by most because of its apparent handling characteristics. Even though both model names ended with "250R", the Honda walked away with the nickname.
The LT250R setup is what is commonly used in today's sport quads, such as:
In an apparent attention to weight by engineers, it came with many aluminum parts: swing arm, rear axle carrier, engine cases, front spindles, rear shock link. But the overall advantage in weight (compared to most other quads) is the simplicity of design. The '85 and '86 Quadracers are known as the lightest production full size race quads ever built, tipping the scales at only 293 lbs dry making them similar to the 250cc two stroke race three wheelers of that era. (They were actually lighter than the Yamaha Tri-Z, slightly heavier than the Kawasaki Tecate 3, and identical in weight to the Honda ATC250R.)
In 85 the Suzuki LT250R QuadRacer became the first high-performance four-wheeler
Specifications
1985 LT250R
Engine Type
Liquid-cooled, single cylinder, two-stroke
Displacement
249cc
Bore and stroke
70 mm × 64.8 mm (2.76 in × 2.55 in)
Compression ratio
12 : 1
Lubrication System
Fuel and oil premixture of 20 : 1
Carburetion
Mikuni VM32SS
Transmission
Manual Clutch, 5-speed
Gearshift Pattern
1-down, 4-up
Starter
Kick Start
Fuel Tank Including Reserve
3.5 gallons
Transmission Oil
1 quart
Wheelbase
43.3 inches
Overall length
72.4 inches
Ground Clearance
5.9 inches
Front Suspension
Independent, double wishbone, oil damped, spring 5-way adjustable
Rear Suspension
Full-Floating suspension system, spring pre-load 4-way adjustable
Front Brakes
Dual hydraulic discs
Rear Brakes
Single hydraulic disc
Front Tires
Dunlop KT786 21x7x10
Rear Tires
Dunlop KT787 22x11x10
Final Drive
Chain 12-42
Dry Weight
293 lbs
MSRP
$2299
1986
Mostly the same as 1985 but with a Mikuni VM34SS carburetor. It also had a very slight modification to the decals, and had white letters on the seat spelling "Suzuki" instead of yellow letters used in '85.
1987
This section needs expansion. You can help by adding to it. (February 2009)
"The beaner year", many different changes occurred within this production year, sometimes making parts hard to match up.
The major changes were in the frame, engine, swingarm, and a-arms. The most visible change is in the frame right in front of the cylinder the 85-86 frame has a single down bar, but the '87+ has a single wishbone down-tube. The 85-86 exhaust goes out the side of the cylinder and the '87+ goes straight out the front in between the split downbar, hence the head pipe design changed for '87+. For '87+, a head motor mount was added and connects the engine to the backbone of the frame (under tank). The 85-86 is also a non powervalved motor as the '87+ have powervalves . The front shocks are also about 3" longer than previous models. The air intake from the carburetor to the cylinder is in a 5 bolt pattern and larger than the other years providing more air flow. Hence, the 87's are desired by tuners and racers for the larger base air flow. The 1987-on LT250R and the LT250R's big brother, the LT500R or Quadzilla, used the 5-bolt intake design. Also the '87+ used a 6 speed transmission instead of the 5 speed used on the 85-86 models. The engine color was changed from silver used on the 85-86 models to blue for the '87+ models.
For the '87+ model, the swingarm design was changed to a more "beefy" design after cracking / breaking issues with the 85-86 swingarm design. Clearly, the Suzuki engineers underestimated how hard their customers could ride their product. However, the '87+ swingarm will mount to the 85-86 frame with some other minor equipment swap (i.e. rear shock, link). The '87+ rear axle carrier includes forward-reverse slide chain tensioning rather than the 85-86's rotary tensioning method. The '87+ carrier housing slides forward and reverse and then is held in place by four vertical bolts and two rear horizontal bolts whereas the 85-86 carrier was held with a clamp or pinch design.
The '87 and '88 rear axles continued to have 24 splines axles that were the same as the 85-86 models. In '89, this was changed to a 26 spline axle similar to the LT500R. The hubs on the 1987 models went to a 5/130 bolt pattern similar to the LT500R). This was in contrast to the 4/130 bolt pattern of 85-86. The front fenders are the same and will swap between any year. The rear fenders will swap between any year, but the '91 and '92 model years were different under the seat in order to access the air filter which was relocated due to the redesign of the rear suspension. The '91 and '92 rear plastic actually has a curved metal bar riveted under the seat to help support the plastic due to the larger void in the plastic moulding necessary to access the air filter. (Note that the original rear plastic for '85 - '90 is no longer available from Suzuki. All new rear plastic is the '91-92 style with the riveted bar under the seat.)
The seats changed drastically in '87. They flare out at the rear (like a "T") while the 85-86 has a straight seat. There are also some cosmetic differences between the seats of various years. '85 had yellow hollow letters spelling "Suzuki" on the sides. In '86, they changed these letters to white. On the "T" seat in '89, they added the words "QuadRacer" to the back in white letters. In '91 and '92, they added splashes of teal all throughout the blue seat in a "camo" type of pattern.
1988–1990
LT250R J,K,L
|- | Engine Type | Liquid-cooled, single cylinder, 2-stroke |- | Displacement | 246cc |- | Bore and stroke | 67.0mm X 70.8mm
The 1991 model year brought about a different linkage in the rear suspension, similar to the LT500R. This necessitated the differences to the rear plastic under the seat as mentioned above.
They also came with rear heel guards that required a few minor changes to the frame, footpegs, and swingarm pivot bolt.
January 31, 2023
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This article does not cite any sources Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Suzuki LT250R news newspapers books scholar JSTOR December 2014 Learn how and when to remove this template message The Suzuki LT250R was a sport ATV manufactured between 1985 and 1992 It combined a lightweight frame and good handling with a 249cc liquid cooled two stroke engine Commonly known as the Quadracer it revolutionized the ATV industry citation needed Before this model was released the ATV world was dominated by three wheelers Although the four stroke LT250E Quadrunner was released a year earlier it was not well accepted by racing enthusiasts that were hesitant to adopt the heavier four wheelers over their three wheelers Then came the LT250R Most of the advances made by Suzuki with this quad have been overshadowed by the Honda TRX250R which was released in 1986 During these early years though they were treated as equals with the Honda being preferred by most because of its apparent handling characteristics Even though both model names ended with 250R the Honda walked away with the nickname The LT250R setup is what is commonly used in today s sport quads such as 2 wheel rear drive with a solid axle A Arm front suspension Powerful lightweight engine Manual transmission and clutch Hydraulic disc brakes two in front one for the rear Chain driveContents 1 1985 2 1986 3 1987 4 1988 1990 5 1991 19921985 EditIn an apparent attention to weight by engineers it came with many aluminum parts swing arm rear axle carrier engine cases front spindles rear shock link But the overall advantage in weight compared to most other quads is the simplicity of design The 85 and 86 Quadracers are known as the lightest production full size race quads ever built tipping the scales at only 293 lbs dry making them similar to the 250cc two stroke race three wheelers of that era They were actually lighter than the Yamaha Tri Z slightly heavier than the Kawasaki Tecate 3 and identical in weight to the Honda ATC250R In 85 the Suzuki LT250R QuadRacer became the first high performance four wheeler Specifications 1985 LT250REngine Type Liquid cooled single cylinder two strokeDisplacement 249ccBore and stroke 70 mm 64 8 mm 2 76 in 2 55 in Compression ratio 12 1Lubrication System Fuel and oil premixture of 20 1Carburetion Mikuni VM32SSTransmission Manual Clutch 5 speedGearshift Pattern 1 down 4 upStarter Kick StartFuel Tank Including Reserve 3 5 gallonsTransmission Oil 1 quartWheelbase 43 3 inchesOverall length 72 4 inchesGround Clearance 5 9 inchesFront Suspension Independent double wishbone oil damped spring 5 way adjustableRear Suspension Full Floating suspension system spring pre load 4 way adjustableFront Brakes Dual hydraulic discsRear Brakes Single hydraulic discFront Tires Dunlop KT786 21x7x10Rear Tires Dunlop KT787 22x11x10Final Drive Chain 12 42Dry Weight 293 lbsMSRP 22991986 EditMostly the same as 1985 but with a Mikuni VM34SS carburetor It also had a very slight modification to the decals and had white letters on the seat spelling Suzuki instead of yellow letters used in 85 1987 EditThis section needs expansion You can help by adding to it February 2009 The beaner year many different changes occurred within this production year sometimes making parts hard to match up The major changes were in the frame engine swingarm and a arms The most visible change is in the frame right in front of the cylinder the 85 86 frame has a single down bar but the 87 has a single wishbone down tube The 85 86 exhaust goes out the side of the cylinder and the 87 goes straight out the front in between the split downbar hence the head pipe design changed for 87 For 87 a head motor mount was added and connects the engine to the backbone of the frame under tank The 85 86 is also a non powervalved motor as the 87 have powervalves The front shocks are also about 3 longer than previous models The air intake from the carburetor to the cylinder is in a 5 bolt pattern and larger than the other years providing more air flow Hence the 87 s are desired by tuners and racers for the larger base air flow The 1987 on LT250R and the LT250R s big brother the LT500R or Quadzilla used the 5 bolt intake design Also the 87 used a 6 speed transmission instead of the 5 speed used on the 85 86 models The engine color was changed from silver used on the 85 86 models to blue for the 87 models For the 87 model the swingarm design was changed to a more beefy design after cracking breaking issues with the 85 86 swingarm design Clearly the Suzuki engineers underestimated how hard their customers could ride their product However the 87 swingarm will mount to the 85 86 frame with some other minor equipment swap i e rear shock link The 87 rear axle carrier includes forward reverse slide chain tensioning rather than the 85 86 s rotary tensioning method The 87 carrier housing slides forward and reverse and then is held in place by four vertical bolts and two rear horizontal bolts whereas the 85 86 carrier was held with a clamp or pinch design The 87 and 88 rear axles continued to have 24 splines axles that were the same as the 85 86 models In 89 this was changed to a 26 spline axle similar to the LT500R The hubs on the 1987 models went to a 5 130 bolt pattern similar to the LT500R This was in contrast to the 4 130 bolt pattern of 85 86 The front fenders are the same and will swap between any year The rear fenders will swap between any year but the 91 and 92 model years were different under the seat in order to access the air filter which was relocated due to the redesign of the rear suspension The 91 and 92 rear plastic actually has a curved metal bar riveted under the seat to help support the plastic due to the larger void in the plastic moulding necessary to access the air filter Note that the original rear plastic for 85 90 is no longer available from Suzuki All new rear plastic is the 91 92 style with the riveted bar under the seat The seats changed drastically in 87 They flare out at the rear like a T while the 85 86 has a straight seat There are also some cosmetic differences between the seats of various years 85 had yellow hollow letters spelling Suzuki on the sides In 86 they changed these letters to white On the T seat in 89 they added the words QuadRacer to the back in white letters In 91 and 92 they added splashes of teal all throughout the blue seat in a camo type of pattern 1988 1990 EditLT250R J K L Engine Type Liquid cooled single cylinder 2 stroke Displacement 246cc Bore and stroke 67 0mm X 70 8mm Carburetion Mikuni TM 34SS Transmission Manual Clutch 6 speed Starter Primary Kick Fuel Tank Capacity 3 0 gallons Wheelbase 50 4 inches Overall length 72 inches Ground Clearance 4 9 inches Front Suspension 8 7 travel dual shocks preload and rebound adjustable Rear Suspension 8 7 travel Suzuki Full Floater single shock preload compression and rebound adjustable Front Brakes Dual hydraulic discs Rear Brakes Single hydraulic disc Front Tires Dunlop 21x7x10 Rear Tires Dunlop 21x10x10 Final Drive Chain Dry Weight 324 lbs MSRP 3498 88 92 changed from 5 bolt 87 8 petal reed valve 6 bolt 6 petal reed valve 1991 1992 EditLT250R M N The 1991 model year brought about a different linkage in the rear suspension similar to the LT500R This necessitated the differences to the rear plastic under the seat as mentioned above They also came with rear heel guards that required a few minor changes to the frame footpegs and swingarm pivot bolt Retrieved from https en wikipedia org w index php title Suzuki LT250R amp oldid 1058021317, wikipedia, wiki, book, books, library,
