Barfly

Stroker? "I want to make it a stroker" .... "it's a stroker motor" ....

I have not a clue what this means.

Joe.

John Van

Hey Joe, Are you "bored",or just playing around?

Lol, john

Barfly

John are you riddling me

Okay, I'm guessing "stroker" has something to do with 'boring' out the cylinders?

Greaser

Stroking a motor is simply changing the length of the stroke. If you make it longer the displacement increases and bigger inches usually equals more HP. If you have two motors that are equal except for bore and stroke, the one with the longer stroke will make more torque than the short stroke motor. The short stroke motor however will rev quicker because the slugs have less distance to travel. Harleys are pretty long stroke motors, typically, this is why they have stump pulling torque. I've seen a Ferrari motor in a museum that had 4.250 diameter pistons and a .750 stroke! You'd have to rev the living **** out of it. Some stock car guys de-stroke (shorter) their motors and rev them higher. You can change the stroke by changing combinations of pin height, rod length, journal position etc...
Hope that helps.

god bless google

MReeves

I agree with Greaser but want to add that a different crank can also make a stroker......

John Van

Sorry barfly,I didn't think you were serious! Of course a stroker has a longer stroke than stock.

john

Barfly

Thanks guys, I now know I won't be 'stroking' my motor anytime soon. All that is a little out of my reach.

I sure appreciate the explanation tho. I've been doing a lot of reading and this comes up now and again but never with an explanation.

Thanks again
Joe.