Thanks for the reply Tim,
Pressure recommended for my vehicle's tires is 30PSI, when loaded - front: 32PSI, rear: 35PSI. Probably I will increase pressure by few PSI maybe to 35 for both front and rear tires but I'm still worry about wear of my suspension (tire should also absorb some shock from the road but when it's pump too much then all work have to do your suspension)
I use oil 10W45 because of the climate where I live. We have cold winters, sometimes temperature can drop even to -30 Celcius deg., on the other hand summers are hot and then temperature is about +30 to +40 Celcius degrees. So I have no other option in case of my motor oil class.
That is my problem I can't find other BSFC chart, it's only one available I've found
I remember from this
(...) But what happens at part throttle, as occurs in nearly all normal car use?
Well, then, the situation is very different! And the trouble is, the SFC figures are always much worse...
Because of this quotation I guess that in my case any pressure less than 100% throttle will give be worse FE. Am I right?
So till now I've driven since friday (results are unknown so far) through city area using P&G technique:
a.) Brisk starts:
accelerate from 0-12mph (900-2700 rpm) -> with more throttle between 2300 and 2700 rpm (red scale on my vacuum gauge: 5-0 In/Hg)
from 12mph to 19mph (1700-2400 rpm) -> more throttle between 2300-2700 rpm (again in red scale on my vaccum gauge)
from 19 to 37mph (1700-3000 rpm) -> again more throttle between 2300-2700 rpm. (red scale on vacuum gauge)
b.) After reach 37mph (30mph PSL) switch to neutral gear and glide (NICE-On).
c.) My delta = 12mph, so my highest speed was 37, lowest when gliding was 25mph.
d.) Since I reached 25mph speed I switch gear from neutral to 3rd
and pulse (like I described above) to 37mph. It takes about 6 seconds.
Here is vacuum gauge I use:
So do I should use less throttle during accelerations?
75% LOD how much it will be on my vacuum gauge? (10-5 In/Hg? yellow field)?
I have also noticed one more thing during steady crusing on flat road with PSL = 30mph.
- when I'm doing 30mph on 3rd gear (about 2600 rpm) than my vacuum gauge shows 19-17 In/Hg.
And now if I change the gear to 4rd gear (about 1900 rpm) (then vacumm gauge shows about 16-15 In/Hg) - on the flat road and with steady foot.
I don't get it, maybe this engine like higher rpm and in higher range is more efficient? Any idea?
PS. Here is a table I've done with speed (MPH)/gear/rpm
for my engine: