if you have a 1.6 liter engine and you want to destroke it to a 1.5 liter, can you do this by simply changing the rods? or must you also change the crank in order to keep the same compression? i didn't think it was necessary to change the crank..... ???

 

oops.... meant to put this in "under the hood" forum. if any mod wants to move it feel free

 

When you destroke an engine, what all does this entail? If you change the crank so your stroke is shorter, how do you keep compression? I was told longer rods was an answer or taller pistons?

 

Must change the crank. Also, must change rods and/or change piston pin height to maintain the same geometry in the combustion chamber.

 

By changing only the piston rod and not the crank, the "stroke" will be the same amount of travel. All you'd be doing is increasing the amount of volume above the piston at the top of it's travel by shortening the rod. I suppose this might be a good way of making this engine a "non-interference" one.

 

Yes, usually the rods are longer. But the dome of the piston needs to be higher as well since you have less overall displacement and the same combustion chamber size.

UL

 

ok. i was right then about my thoughts. thanks for helping me out!!!!!!!

 

thanks UL.

So what, then, is the purpose of destroking an engine? To be able to rev higher??

 

Moving to UTH

 

and what is "non-interface"?

I want to know.