Categories
MX Restoration

1979 Honda CR 250 restoration

Project –
https://www.vitalmx.com/forums/Bike-Builds,46/Turning-a-1979-CR250-barn-find-into-a-1978-RC250-replica,1343747?page=1

Looks like this bike was gently trail ridden for maybe 20 or 30 hours. The only wrench this bike ever saw was the rear axle nut to adjust the chain. It was pretty clear that the wheels had never been removed from the bike and the original “Claw” tires still had most of their tread left. The grips and levers looked almost the day they left the dealership.

Obvious that this bike not only had not been raced, but it doesn’t even look like the bike had ever been even in a small crash.

The paint on the fuel tank was unmarred and no sign of even the slightest knee scuff marks. The same goes for both unmarred engine covers. The seat still looked brand new, no cuts or scratches. Most bolts still looked quite new and the trans oils looked pretty good after sitting in a dry place for probably close to 40 years. There was a little bit of fading on the front fender, but other than that, the plastic all looked good.

There was no dry rot on any of the rubber parts either which were still supple like new. There were remnants of a mouse nest in the airbox, but this bike is pretty much a time capsule from the past. The few minor scratches on the swing arm and left side plate looked more from having things piled up against it in a garage than riding. This bike is 100% original.. no parts were broken or missing.

In the end the best match for the engine paint was the RAL 3020 Traffic Red form LVP.

For the slightly lighter colored frame, the Tahitian red from National Autobody & Paint Supply was a dead ringer except it only comes as a base coat which is a flat finish and needs a gloss clear coat.

Part list:

  • rear motor mount bracket fabbed by Ray Carlstedt
  • replica HRC bolts,
  • upper motor mount bracket,
  • RC-replica swing-arm spindles,
  • stainless RC replica motor mount bolts,
  • CNC exhaust flange that will prevent spooge dribble typical of the stock bike,
  • vintage D&G front fork air caps,
  • RC replica white gas cap,
  • VMX fenders,
  • heavier .48kg springs from Race Tech 15 weight oil,
  • shock guard to protect the shafts on the Fox Air Shox
Categories
MX Restoration

1996 Kawasaki KX 250 rebuild

Project – https://www.vitalmx.com/forums/Bike-Builds,46/96-KX250-hybrid,1336043

Part list:

  • motor is getting a full rebuild with oem crank
  • powdercoated frame
  • powdercoated subframe
  • black wheels
  • cerakote hubs
  • purple shock
  • new zinc plated bolts
  • 96 oem graphics seat cover from Evo mx
  • Pro Circuite pipe
  • new r304 silencer
  • 06 kx450 forks (rebuilt)
  • 07 kx450 wheels, hub, rotor
  • axles, spacers & 07 kx450f brake system
  • EBC 280 kit brake kit
  • evo 96 decal kit
  • custom carbon fiber skid plate

Motorcycle specification:

1996 Kawasaki KX 250 specification
Categories
Manual

Daytona 150E upgrade parts

If you want to extract more power from your Daytona 150E engine this post will show parts that could be upgraded and part specification.

HI-COMP piston and cam shaft upgrade part specification
DOHC cylinder head and cylinder kit
DOHC cylinder head and cylinder kit
DOHC cylinder head and cylinder kit
Upgraded engine and power curve changes
Upgraded engine and power curve changes
Categories
Manual

Daytona 150 E parts catalogue

Daytona 150E engine full part catalogue. Includes part numbers and diagrams.

Cylinder head parts catalog for Daytona 150 E engine
Cylinder head parts catalog for Daytona 150 E engine
Valve mechanism parts catalog for Daytona 150 E engine
Valve mechanism parts catalog for Daytona 150 E engine
Crankcase cover parts catalog for Daytona 150 E engine
Crankcase cover parts catalog for Daytona 150 E engine
Oil pump parts catalog for Daytona 150 E engine
Oil pump parts catalog for Daytona 150 E engine
Crankcase parts catalog for Daytona 150 E engine
Crankcase parts catalog for Daytona 150 E engine
Crankshaft/piston/connecting rod component mechanism parts catalog for Daytona 150 E engine
Magneto component mechanism parts catalog for Daytona 150 E engine
Magneto component mechanism parts catalog for Daytona 150 E engine
Clutch mechanism parts catalog for Daytona 150 E engine
Clutch mechanism parts catalog for Daytona 150 E engine
Transmission mechanism parts catalog for Daytona 150 E engine
Transmission mechanism parts catalog for Daytona 150 E engine
Gearshift mechanism parts catalog for Daytona 150 E engine
Gearshift mechanism parts catalog for Daytona 150 E engine
Categories
Manual

Daytona 150 E engine general specification

Categories
MX Restoration

1992 Honda CR500R restoration

Specification for bike (CR500RN)

Dimensions
– Overall length – 2183 mm / 85,9 in
– Overall width – 825 mm / 32,5 in
– Overall height – 1240 mm / 48,8 in
– Seat height – 964 mm / 38,0 in
– Wheelbase – 1489 mm / 58,6 in
– Ground clearance – 343 mm / 13,5 in
– Dry weight – 101 kg / 222,7 lbs

Frame
– Type – Semi double-cradle (steel)
– Front suspension, travel – Inverted telescopic fork (adjustable) , 310 mm / 12,2 in
– Rear suspension, travel – Swingarm Pro-link with mono-shock (adjustable), 320 mm / 12,6 in
– Front tire size – 80/100-21 51M
– Rear tire size – 110/100-18 64M
– Front brake – Single disc, 2-piston caliper
– Rear brake – Single disc, 1-piston caliper
– Fuel capacity – 9,0 l / 2,38 US gal
– Trail – 119 mm / 4,7 in

Engine
– Type – Water-cooled 2-stroke
– Cylinder arrangement – Single cylinder
– Bore & Stroke – 89,0 x 79,0 mm
– Displacement – 491,4 cm³ (29,9 cu-in)
– Compression ratio – 6.8:1
– Max. power – 64,6 hp (47,5 kW) / 6000 rpm
– Max. torque – 72,2 Nm (7,3 kgm) / 6000 rpm
– Carburetor – 1x 38 mm

Drive train
– Clutch – Wet, multi-plate
– Transmission – 5-speed constant mesh
– Final drive – Chain
– Primary reduction – 2.520
– Final reduction – 3.500
I – 1.750
II – 1.388
III – 1.150
IV – 1.000
V – 0.870

Electrical
– Ignition – CDI

Project
https://www.vitalmx.com/forums/Bike-Builds,46/1992-CR500R-restoration,1337314?page=1

Rear shock bumper and bladder was from OEM, Racetech seal and dust cover. Nitrogen tank with 160psi.

Front forks – NOS Racetech .44kg springs. Honda OEM sliders, seals, dust wipers.

MSR poly bushings for the Scott risers .

UNI filter and a gas tank strap from 2004 CR250R.

http://www.oem-cycle.com/HONDACR500BIKEID.shtml

The wire harness were cleaned up and back in place and installed KTM pegs with minor fab work.

The radiators got some chemical cleaner which worked great at getting in the fins and small areas. Fins where straightened by two screw drivers. All the radiator hardware, clamps, hoses, etc… are in good shape except for the two hoses that attach to the cylinder head which were replaced.

Categories
Manual

Daytona 150E engine maintenance intervala tables

Service schedule that keeps your Daytona 150 E in top shape. Your necessary maintenance intervals and service schedules.

Categories
Manual

Lifan routine maintenance and servicing

Pit bikes with 4 stroke air-cooled horizontal (lay down) engines, specifically the Lifan semi-automatic 1P52FMH, and 4 speed Lifan 1P52FMI, Lifan 1P56FMJ (YX140), Zongshen 1P60YMJ (ZS 155).

Applicable brands: Stomp, WPB, Demon-X, LMX, M2R, Slam, Thumpstar, SSR, Orion, Pitster Pro, Piranha, G2 Moto, Coolster, Motovert.

Valve adjustment
Engine
Engine
Chain and sprocket
Categories
MX Restoration

1995 Yamaha YZ 250 restoration/rebuild

This project was made with budged in mind so many parts are reused!

Project forum thread –
https://www.vitalmx.com/forums/Bike-Builds,46/1995-YZ-250-No-frills-no-bling-rebuild,1328872?page=1

Used parts:
  • 06 YZ450
  • .47 springs, 375cc of fluid
  • new swing arm, old was to damaged and cracked
  • front brake from Honda CRF – master cylinder, hose and caliper with a 270mm rotor.
  • rear brake master cylinder from YZ ’04
  • right side frame guard of ’98
  • came with log rod motor
  • later model rear brake master cylinder
  • Boyesen Rad Valve
  • Enzo subbies

Front wheel in good shape with spacers, rotor, axle and brand new front tire for cheap from eBay.

There was added some material to the steering stop so that the later-model clamps would make full contact.

Categories
MX Restoration

1995 Honda CR-250 restoration project part list

Projects parts:
  • ufo plastics;
  • PC porting and head mod;
  • PC works pipe and silencer;
  • Vforce3 setup;
  • Odi lock-ons;
  • CEET medium density seat foam;
  • Technosel seat cover;
  • ’94 shrouds;
  • forks and clamps are from an ’05 crf250 ;
  • gold excel wheels and dubya bulldog spokes and nipples ;
  • sudco carburetor;

Tail pipe was tweaked to clear the air box and bladder on the shock. Also cut the stock front mount off the pipe and rewelded it to work with the ’95 frame

Fork modifications – pressed the ’05 stem out and pressed the ’95 stem into the ’05 clamps.
New ’95 bearings and seals. 
Spanner nut from the ’95 but used the upper aluminum nut from the ’05. Measure your height of the stem in the ’95 before pressing it apart so you know you have the stem height correct.