We Deliver Worldwide
Moto Cross Parts YOUR ONLINE SOURCE
OF MOTOCROSS
PERFORMANCE PARTS

Blog

CAMSHAFT REPLACEMENT. KEY INFO

Posted

Looking to replace your four stroke cam shaft?  Here is all you need to know about Cam shafts for sale at Motocross Parts UK

The word cam refers to the circular disc. In a four-stroke engine, cams are used control how the intake and exhaust valves open and close. The cams are fixed on the camshaft, which is connected via a chain to the crank (crankshaft) > Find crankshafts here

The cam has 'lobes' which the valves ride against. As the cam spins, the lobes push the valves open, while valve springs will push them closed.

Modern motocross bikes have overhead cams. In the era of pushrod engines, the camshaft could be located below the cylinder head. All Japanese motocross bikes, except Hondas, use a dual-overhead-cam (DOHC) configuration that assigns a separate cam for the exhaust valves and intakes valves.

Cams are generally manufactured by two methods. OEM camshafts, which are produced in larger volumes, are cast iron and then nitride-coated. Aftermarket and high-performance camshafts are made out of billet steel. First, they are CNC-machined and then rough ground to a slightly oversized specification. Finally, they are heat-treated and finish ground to the precise measurement.

Choosing the Right Cam

Hot Cams stage 1, 2, and 3 camshafts

Hot Cams stage 1, 2, and 3 camshafts are chosen as matched sets of intake and exhaust cams to maximize the efficiency of engines that are stock or mildly modified with external components such as exhaust system, air filter, etc. Most riders in the UK will find that these cams will satisfy their expectations and needs for performance improvements

Stage 1 cam sets are selected to provide increased torque output in the RPM range below the engine’s torque peak. These cams will generally produce more part-throttle torque, better low RPM throttle response, and increased peak torque. In some cases high RPM torque and peak horsepower may also be improved.

Stage 2 cam sets are selected to provide increased high RPM horsepower. These cams are best selected for riding situations with higher average speeds. In many instances, low RPM torque is as good as the stock cam(s) and peak torque is improved, but the goal is to improve power in the RPM range above the engine’s torque peak.

Stage 3 cam sets are chosen to provide the ultimate in high RPM torque and horsepower performance. These cams are only offered for a few models where it has been determined that a stock or mildly modified engine can safely produce power for a high speed usage situation.

Browse Honda Camshafts for sale

Browse Kawasaki Camshafts for sale

Browse Yamaha Camshafts for sale


Honda Stage 1 Camshaft

Product of the Month: Risk Racing Lock N Load Strapless Tie-Down System

Risk Racing Lock N Load Strapless Tie Down System - Reference 77849The “Lock-N-Load” Moto Transport System securely holds your motocross bike in your trailer without the use of tie-down straps, floor anchors or wheel chocks. It takes an enormous amount of pressure off of the fork seals during transit, and it frees up valuable space [...]

Read More »

Motocross Parts UK team up with Hawkstone International MX

Motocross Parts UK will sponsor Hawkstone International MX on 5th February 2017 at the illustrious Hawkstone Park Motocross track near Shrewsbury – SY4 4NA.The Hawkstone International will give the fans an opportunity to some of the World’s best riders in the UK in 2017. There will be no MXGP in Britain this year due to the [...]

Read More »

BBC Breakfast News feature Motocross : Arena Cross Tour Round 2 in Glasgow

BBC Breakfast News feature Motocross : Arena Cross Tour Round 2 in GlasgowThe second leg of the 2017 Arenacross Tour stops off at the Glasgow SSE Hydro Arena tomorrow, Saturday the 14th of January and the AX Freestyle crew are getting ready to show off their high-air antics. Spaniard Edgar Torronteras, widely acknowledged as [...]

Read More »

The Art of Cornering...

On the surface, motocross may look like a sport that is simply focused on being the fastest person on the track. In the grand scheme of a race though, there are so many more technical elements that play into the overall success or failure of a rider.While overall speed control in the straightaways and off [...]

Read More »

Everything you need to know about Pistons! ... but were afraid to ask.

What size piston do I need?If you are just replacing the piston, then you need to first know the bore of the cylinder. This can be done by using a bore gauge to find the diameter or by reading the owner’s manual to find the bore specifications. Ultimately, the bore should be measured for the best possible results. After the [...]

Read More »

History of Motocross in the UK

One of the most storied new age motor sports in the world, the sport of motocross has had a long history around the world and especially in the United Kingdom.Many fans of this incredibly exciting sport may not know that is originated in the UK and it has now developed greatly around the world over [...]

Read More »

The Dirt Bikes that Changed Motocross

The sport of motocross has evolved immensely since its creation in the United Kingdom nearly a century ago, and technology has helped move it along in leaps and bounds.While riders have improved in the areas of skill level and overall fitness to become better riders, the technology and development of the bikes are what have [...]

Read More »

How to Seat Bounce

When it comes to mastering riding dirt bikes, learning proper techniques and practising them as frequently as possible is one of the keys to becoming a better rider in the long run.From correctly utilizing your body control, knowing when to use the clutch, and using your feet on turns, there are a plethora of different [...]

Read More »

How to Handle a Rutted Track

While you dream of riding on perfectly manicured track every time you participate in a motocross track, the fact of the matter is this simply won't be the case very often. Real motocross is about choppy, unpredictable terrain that throws a lot of obstacles at you, specifically one thing in particular: ruts. You can [...]

Read More »

×
×