I figured this thread was a little too technical for the other parts of the forum, so I decided to post this in the Technical section. Anyways, I hope Gatecrasher agrees
I've been toying with the idea of rebuilding my engine over the summer, especially since it is burning oil quite profusely lately (valve seals are a big problem in these engines). So let's talk about these engines and the different things I could do to it:
First of all, to build these engines up can be very costly. With everything I'm wanting to do, it could cost me well over $3500 to fund this. That's why I'm very interested in finding out which parts are necessary and which parts are not. The list I have going for my engine is:
11:1 compression pistons, 3rd gen lifters, crower rods, ss valves, high tension valve springs, and later some hard-weld cams.
Now time for some questions:
1) Are new rods really that necessary if I decided to build a good street/strip motor? My rods are already forged out of the factory (my car is a 93), but am I taking a risk at throwing a rod if I don't upgrade them since they have 125k miles on them already?
2) Would it really be worth it to give this engine an overbore? In other words, would the extra .05 liters of displacement give me a decent gain?
3) What do you guys think about taking this engines high-reving capabilities to a new level? With some high tension valve springs, 3rd gen lifters, and other work done, do you think this engine could handle 8000 rpm safely?
4) One thing I really need to learn about is the concept of oversized intake and exhaust valves. Which ones should be bigger? I've only seen intake valves bigger than exhaust, but 3Sx also offers bigger exhaust valves than intake? What significance does the size of the valves have on the performance?
5) What parts of the engine yield the biggest gain?
6) What are some parts that aren't really necessary for high performance?
I'm really wanting to learn as much as I can about building up our engine to squeeze the most out of it as I can while keeping it streetable. Any answers/comments would be greatly appreciated.