Tweet
Here is a little some thing I made up.
It shows the 2nd, 3rd and 4th harmonic intake air ranges in an engine.
There are more harmonic ranges but they are realy narrow and I couldn't get them.
Current trends have runners getting longer and longer. When you look at SBC to LT1 and LS1.
The shorter runners have longer harmonic ranges but your talking 5th and 6th ranges that aren't very efficient. The more efficent ranges That are shown) are a lot higher up in the rpm range on the short runners and arn't going to be used by a street engine.
For you V.E. to be over, at or near 100% you will need to be in red (second harmonic range).
You see that with the realy long runners that the red is obtainable on a street engine but the ranges are narrow and it would be kind of hard to get those runners under the hood.
This is one thing they hid on the pro stock engines by covering there intake manifolds that and the shape.
V.E.
us & them
I punched in the #'s for a 2.8l and got 75%.
When I punched in the #'s for a honda S2000 engine I got 95% V.E.
That's 20 years 20 more %.
There useing more rpms pure and simple to get that X harmonic range (dont know how long an S2000 runner is).
I'm guessing there running the inside 4th harmonic range.
I say we beat them at there own game with our bigger cube engines but with longer runner intake and higher rpm ranges.
Does any one know where I can find out the later harmonic ranges?
Any one have any engine combos, mainly looking for hp, hp's peak rpm and runner length?
What do you know about this?
Ever wonder how many G's are put on a piston in one of our engines, check out pg.6 on my cardomain site .
It shows the 2nd, 3rd and 4th harmonic intake air ranges in an engine.
There are more harmonic ranges but they are realy narrow and I couldn't get them.
Current trends have runners getting longer and longer. When you look at SBC to LT1 and LS1.
The shorter runners have longer harmonic ranges but your talking 5th and 6th ranges that aren't very efficient. The more efficent ranges That are shown) are a lot higher up in the rpm range on the short runners and arn't going to be used by a street engine.
For you V.E. to be over, at or near 100% you will need to be in red (second harmonic range).
You see that with the realy long runners that the red is obtainable on a street engine but the ranges are narrow and it would be kind of hard to get those runners under the hood.
This is one thing they hid on the pro stock engines by covering there intake manifolds that and the shape.
V.E.
us & them
I punched in the #'s for a 2.8l and got 75%.
When I punched in the #'s for a honda S2000 engine I got 95% V.E.
That's 20 years 20 more %.
There useing more rpms pure and simple to get that X harmonic range (dont know how long an S2000 runner is).
I'm guessing there running the inside 4th harmonic range.
I say we beat them at there own game with our bigger cube engines but with longer runner intake and higher rpm ranges.
Does any one know where I can find out the later harmonic ranges?
Any one have any engine combos, mainly looking for hp, hp's peak rpm and runner length?
What do you know about this?
Ever wonder how many G's are put on a piston in one of our engines, check out pg.6 on my cardomain site .
Comment