i was lookin at hollywood dirt and have seen talk about stroker cranks and cams and stufff like that. i know crank is crankshaft and the piston is connected to it but what does a longer one do and what is the stroker crank. also what is a cam

 

there is no need for a cam for your blaster.....a cam is a 4 stroke engine component! a stroker crank requires either an ugly spacer plate or you can have a good engine builder trench the cases to allow room for the stroker crank! a stroker crank allows for a longer stroke on your engines revolutions....you can buy billet or forged cranks (forged is just cheaper) and the differences of the two is the way they are made!

 

thanks everytime one of those posts come up i try to figure out what it is but now i know

 

Stroker cranks are much like long rods. Sometimes long rods are referred to as a "poor man's stroker." Basically, its just a longer conncecting rod. In a blaster, you usually use a banshee rod, which i think is +4mm. Like a stroker, you need a base plate spacer, but you don't need to machine the case at all..

This is from the Hollywood Web site, From Hollywood Himself:

Stroker:

The crank web pin is relocated higher up in millimeters to change the entire length of the stroke both up and down, for instance, if the pin is relocated 1mm upward, the stroke is increased by 2mm total, the pro's of this modification are increase cylinder volume and compression resulting in more overall torque & horsepower, the pin can be relocated by either welding the bottom of the hole and recutting a new one on a milling machine, which seems to be the industry standard or by cutting a bigger hole and inserting an offset pressed in steel bushing (what we are working on for our new line of strokers), the downfall of the welded hole is they are not always accurate and the pin has to be welded once installed so it does not move and cause the crank halves to become untrue, doing this since the rod pin is hardened steel, a tig weld must be used, but there is still the chance of the weld coming off and getting tossed around in the engine, which I have seen happen many times, the cons of a stroker are, the cases must be machines in order for the rod to clear them, and there is more intake and exhaust cylinder wall force on the piston because the angle of the rod is now more severe, so longevity is now in question.

Long rod:

A long rod is just that, a longer rod, usually a banshee rod is used, this is as simple as rebuild the crankshaft and using a longer rod, the benefits of a long rod are increased crankcase volume, but a spacer plate must be used to raise the cylinder, a long rod will not technically add displacement, nor will add compression, but if done in conjunction with the cylinder head suface being milled to increase compression, a long rod will have the same benefits of a stroker crank at a fraction of the cost and less cylinder wear than the stock rod because the longer rod has virtually no angle to it at all, this makes the engine rev much faster, resulting in increased top end power and being that the crankcase volume was also increased you have now added much more torque, and by milling the cylinder and head to increase the compression you'll have about the same results as what a stroker crank will do for you.

 

sounds complicated lol

 

It is not something a person should try to do unless they have the proper tools and experience.