[HWYSTR455]

Competing and being competitive are two different things, thought that needed to be pointed out. One costs way more than the other, that I don't think needs to be pointed out.

To have fun, use what you have, and take reasonable steps to make it live.

Good machine work, attention to detail on assembly, oiling (good pan), and cooling are key.

To be competitive, you would/should build an application-specific engine. Would think something like a 400 (3"), .060 over, long rod, light rotating component engine would be a good choice. And of course, along with all the proper support systems, dry sump would be best.

Oil cooler, PS cooler, differential cooler, good brakes and shocks go a long way in taking the extra steps.

If you look at the failures that occur in endurance racing, most of the time it's not core engine stuff that fails, it's support systems or other drivetrain items. Electrical is a biggie, believe it or not. Many run their' race engines past their' service life, and that's when you see actual engine failures.

I've beat my stuff before for more than 20 mins at a time, sometimes as long as an hour plus. I don't think it's as difficult as some may make out, common sense is a key ingredient.

ho428 - What are some of the common failures you've seen in circuit racing?

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