I don't quote rollers figures generally and from about 7200/7300rpm the fuel delivery wouldn't increase, so the AFR was getting worryingly lean and nothing I could do to make it right. Fuel pump and/or lines likely to blame. The race cars I have run this engine spec in before have always had non-standard pumps and tanks. I think I'll leave figures for now, I only really trust engine dyno results these days. It's a nice engine and I'm proud of it!
What really pleased me though, I asked Josh to do a brim to brim economy test on the way home and it gave 37.9mpg!
Last edited by Sandy309; 17th August 2012 at 20:21.
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