1.8 Liter Race Motor Questions, L Jet and Cam Options

[motorvated]

I am thinking of building a reliable race motor from my stock L Jet 1.8. I am thinking of increasing the bore and going to flat top pistons and slightly higher compression ratio, keeping it below 2.0 liter displacement. Either single heavy duty or dual valve springs and stainless steel valves, etc. I am thinking of using the L Jet system that is on it now, going to 2.0 liter injectors. Are there any performance camshafts that will work well with the L Jet, or am I barking up the wrong tree. My other option is dual 40 IDF Weber carbs and a cam to go with them. I'd like to try to use the L Jet if a suitable cam is available. Anybody done something similar? All comments welcome.

[Charles Freeborn]

If you're building to SCCA VP rules they're pretty open. I'd push the displacement and compression to the limit and then decide what intake / cam combination works best. The Webcam 86b is a solid choice if the heads flow freely enough.
Other sanctioning bodies can vary a lot. Here in the PNW SOVREN mostly looks at the cars overall appearance. If it looks period correct they don't look much under the hood. SVRA is fussier. As with most club racing, the rules are mostly focused on safety, and only get into spec enforcement if there's a protest. All of the club racing bodies are light on entries so they'll pretty much let you run where you want to (within reason) and only step in when someone howls.
As for using LJet at least it's a timed system. I'm not familiar at all with how they work as I've only worked with Webers, and yes they can be fussy (carbs), but if in good nick they're quite tunable and reliable.
I know racers that have gone the micro squirt route and ended up taking it all off because of lack of computer skills. YMMV.
Start with the rules from the sanctioning body you plan to run with and go from there.
It appears you're in CO. If you're anywhere near Grand Junction I'd give Alen Johnsen (AJRS) a call or visit and get his input. There are few people more experienced with T4's than him. Incredibly nice guy too.