Originally Posted by astondg

I really hate to bring down the level of the conversation here but I have a question about this and you guys seem like the people to ask. Please keep in mind that I have a general understanding about this and an interest in engines and physics (but only studied physics until I finished high school) but that is about all. I would probably need a week or two to read and understand all the information you've shown so far and a bit of extra research too.

So the question: You are talking about removing the balance shafts to rev higher than stock, I think I saw a mention of about 7500rpm in there somewhere, but what about a lot of the Japanese MIVEC, VTEC, VVT, etc. engines that rev to about 8200 to 8500rpm standard or the S2000 engine that goes to 9000rpm? Do these engines still have balance shafts? What about engines like the 1980's BMW M3 (E30) that were sometimes reved to 10,000rpm in race form, or were the balance shafts removed for racing?

Sorry again. If you would like me to take this discussion somewhere else please let me know, or if this has been answered and I missed it I am also sorry.

I have been a bit busy studying at University for the last 3 years to hav time to research other things but now that I have finished I would definately like to look into stuff like this, I think I probably should have taken a physic/science/engineering type degree instead of I.T.

Aston

Originally Posted by SuperHatch

P.S. - Can either of you recommend a good college level textbook, or some technical literature regarding engine design? I've read many "Barnes & Noble" type books on engine design, but they only tell you what they think is good as far as geometries and never get into the math behind it.