So, I had my engine build over the winter. It's now 1956cc 76mm crank, 90.5 AA pistons,CB Perf. #2236 cam with CB 1.25 ratio rocker 8.5:1 comp ratio N/A . Stock valve size 044 heads. On megasquirt EFI
My question is my cam. I'm not very cam smart, the choice was by the engine builder. CB shows it as a turbo friendly cam, why? lobes are at 107* what else makes it that way? Really I don't know how to understand the spec card and what it is telling me.
I'm tuning with Megasquirt and having detonation problems at MAP 80-100 RPM 1500 and up 2nd& 3rd gear pull I keep pulling back timing, but I feel like I'm really pulling is back there should be more advance.
The engine went from stock displacement w/110 cam 1.1 ratio rockers( megasquirt) to the 1956cc set up
SOLVED: I put in 25lb injectors I'm all the way up to 31* advance. WOT
Thanks,
Mark
Solved: Denonation
- markvwguy
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Solved: Denonation
Last edited by markvwguy on Sat Jul 30, 2016 3:16 pm, edited 3 times in total.
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Re: My cam crank setup?
You didn't mention your comp ratio.