i have looked and cant find any input on my engine build choice i drive a 91 Acura Integra and am looking into geting into this sport but i have to wait i currently have a hurt motor that im just using as my daily driver and am in the process of building a block but now im waiting because i would like to know what everyone thinks the best build would be i was going to do fully build ls-tec low comp cp pistons sleeved and crank ect... but would high comp pistons be better and all motor for this kind of sport?? Any input would be great thanks.

Gage

 

im doing full under suspension when i put the motor in as well

 

If you're not an experienced autocrosser, you're taking the notion of "building an autocross car" far too seriously. The driver is the biggest part of the equation. Doesn't matter what you do with the engine or suspension until you've gotten past that hurdle.

But, in general, you want to minimize shifting in autocross. So, you want an engine with a very wide powerband that has some "dig" from low revs. Something that you can get a good launch in first, shift to 2nd and leave it there whether the course slows down to 25mph or speeds up to 65.

How you acheive that kind of powerband depends on your specific engine. But, really... as mentioned above, I wouldn't stress about it. Just don't build a "peaky" engine that doesn't make any low-mid range power and you'll be happy. (in other words, build a typical factory-spec engine)

Reliability and consistency should be your goals for your car while you're learning.

 

I'm with Loren, a built, swapped, or mini-me engine will put you into the Street Modified class, where you will be constantly beaten by people with much faster cars who have much more experience. Its very frustrating. The best thing to do is to swap in another stock motor or fix your current one, and run in the stock classes till you get a feel for things. When you feel like your car is slowing you down (which won't be for a long time) then you should start doing performance mods.

 

In addition to the above good advice, a deep oil pan with good pick up design and baffling is important if you have a car you are going to be throwing around really hard as well.

 

thank you so much for every ones input