Timing effect on HP
Discussion
Hi All,
not exactly the most in depth question in the world but what effect does incorrect timing have on HP outputs on an old school Chevy V8?
I run a 302 (5.0 litre) carb fed one in a boat and recently checked the timing and it was at 2 degrees instead of 8 at idle.
Will this significantly affect power output? Normal HP is 200HP
thanks people,
Nick
not exactly the most in depth question in the world but what effect does incorrect timing have on HP outputs on an old school Chevy V8?
I run a 302 (5.0 litre) carb fed one in a boat and recently checked the timing and it was at 2 degrees instead of 8 at idle.
Will this significantly affect power output? Normal HP is 200HP
thanks people,
Nick
rev-erend said:
My guess is you will loose a few HP.
It's often retarded to a figure like this to cater for low quality fuel. Say if it was pinking.
Thanks for that. well i tend to run it on the finest Tesco or Morrisons can deliver.. oo blimey i best worry It's often retarded to a figure like this to cater for low quality fuel. Say if it was pinking.
Seriously though she tends to run mostly on Shell 95 or occasionally Optimax so 8 degrees should be fine.. i would hope.
may improve bottom end response which has been rather fluffy.
GreenV8S said:
If you're saying the ignition is 6 degrees later than it should be, that sounds like a lot and will make a big difference to top end power.
yep thats the long n short of it. Should be advanced by 8 degress. Was advanced by 2.Strangely, or not, idle raised by around 200rpm once the timing was set correctly.
GreenV8S said:
If you're saying the ignition is 6 degrees later than it should be, that sounds like a lot and will make a big difference to top end power.
yep thats the long n short of it. Should be advanced by 8 degress. Was advanced by 2.Strangely, or not, idle raised by around 200rpm once the timing was set correctly.
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