Quote:
Originally Posted by chrisbalich
I'm in the throes of deep-diving and could use some anecdotal info.
1. I'm looking to pick up a spare set of spark plugs for my Rennsport trip. I have NGK BPR5EIX in the car now. The 3.1L engine makes ~10.1:1CR and I worry I'm pushing my luck. With the EFI, I can make adjustments on the fly, but I'm thinking of stepping down to 6 heat range plugs for the trip...if not permanently. Thoughts?
2. I live at sea level and fill my single-spark high-ish compression engine with 93 octane fuel. That is not available west of Kansas City. So I'm exploring octane boosters. I'm not keen to make more power. I just want to stave off detonation and engine damage on my road trip without completely redoing my timing map. Please share any experiences.
3. Oil. I typically run VR1 20w50. I'm thinking of trying the Motul Classic Performance for this trip. I'll be going 5k miles on this oil change. I like the VR1, so I'm probably not going to make a change. But it's worth discussing, so please do so.
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I'm at 9.5:1, the same spark plugs, and the same oil.
I'm currently running a full tank of VP110 (available on tap locally) and it's good, reliable power, no knocks or anything.
Maybe adjust timing or use a colder spark plug for the trip?
That way you're not fumbling with bottles or worrying about your octane levels when traversing the Rockies and there are no octane boosters available.
Just thinking aloud.