morepower2 said:
With no ECU, we have found with multiple dyno tests that 15 degrees is the best.
Mike
Hello sir,
Is it possible for the roller engine to respond differently to timing than the non roller SR20DE?
Have you played with the timing on a camed roller SR20? I've been trying to find optimum timing point and humbly this is what I came out with.
I have Roller S3's on my Primera and unfortunately I have no access to a dyno for tuning. But I do have this
http://www.speedoptions.com/news_headline.asp?aID=2145&ref=default&v=4&pg=0
It is pretty consistent if you are accurate on the measurements. I found out that 17 deg timing yielded the best numbers on my testing with stock ECU and the roller S3's. The measurements I made are from 40 Km/h to 100 Km/h (fuel cut) I always do it in the same street, floor it @30 Km/H on the same spot of the street and on second gear, always trying to make the measurements with the same
amount of fuel (weight constant). I average 5 runs and got this results.
With timing at 16 I got 6.17 seg
with timing at 17 I got 6.09 seg
with timing at 18 I got 6.25 seg.
Did that came out right? I'm a spanish speaker, sorry if it didn't got through.
Thanks
BTW, the noise was not coming from the camshafts, many thanks for the prompt reply sir.