Mart247 makes some great points and I'd like to add my 2p.
He's right, you need to build a relationship with an engine builder but it's not as simple as them, only building their best engines for team & top customers. It's more a case of them getting to understand your needs. I.e. squish, if he knows he'll only see your engine once a year, he'll have to leave the squish bigger than someone who run s1 and has his engine checked between every round. Otherwise 6 months on, you might fail scrutenerring.
The relationship is important in other minute ways, being a regular customer they will might go the extra mile and that might be the difference between trying a piston for size and saying "that's ok" and them trying a couple more to achive an even better fit or measuring the port height or squish and trying another combination of gasgets, that gets things a couple of 0.00mm's closer to the fiche limit. It's all about incremental gains; a 1/10 sec here, a 1/100 there. However don't expect one person building your engine, to get you a big chunk of time, over another.
Finally, there's as much or more in the carb, as there is in the engine!
|
|