Quote:
Originally Posted by tranzformer
This might be a dumb question, but what is gained by destroking an engine (say from 2.5L to 2.0L) vs. boring a 1.8L to 2.0L? Do you gain something in the process (durability, revs, tq....etc.) or is a 2.0L a 2.0L?
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I've been tooting the rod-stroke ratio horn for a couple days now. De-stroking would cause less mean (aka average) piston speed at the cost of less displacement however you can put in a longer connecting rod if it's up to strength and the engine would be able to withstand and produce peak horsepower at a higher rpm, I also stated a smaller bore then the FB25 94mm just to beef it up.
Any increase and decrease in stroke or bore will effect the ultimate torque and power of the engine.
Is a 2.0L a 2.0L. No! Look at my 2ZZ-GE Vs. a 1ZZ-FE. Both displace 1.8L, both are very different animals... I'd be happy to try and explain it in more detail on the engine tech thread if you'd like!
@Dimman I doubt it too, but you never know what will happen. I simply thought up this engine months ago trying to reverse engineer the FB20 to make it high rpm suitable! Seeing as the EJ were usually over square led to this idea.