IHs with 2ndry shorty injectors: More flow? - Page 2 - ZR-1 Net Registry Forums

XfireZ51 · 03-08-2012

Quote:

Originally Posted by LGAFF

This are not the first time these were used

Not sure that validates anything. Not saying it invalidates anything either. By moving the nozzle further upstream and assuming the same angle of the spray from both injectors, the fuel will have travelled a longer distance from the nozzle of the shorty injector and so the fuel fan will have spread further out at the same point in the runner. The question is what is the effort worth?

LGAFF · 03-08-2012

Looking at some real-world examples, Strader reports that on a 1,000hp engine, the injectors were originally located 7 inches back from the valves. Doubling this distance to 14 inches was worth 50 hp on top

-Hot Rod Magazine

LGAFF · 03-08-2012

I am not sure what will result, just not sure why when the center of the nozzle does not change we arrive at a automatic loss in power.........

What I do know is that is a clear shot, air is not being forced downward by the boss....no loss in velocity no turbulance, etc

If removing the butterflies is worth 3-4 ponies, not sure how free flowing the air would not be the same....

LGAFF · 03-08-2012

Only injector nozzle no no is that do not put the injector more than 45 degrees to the wall

LGAFF · 03-08-2012

...and no I do not think the inj placement moving up 4-5mm is going to add 50hp....I think that point is not really relevant...I am looking at the opportunity to take full advantage of the 36mm 2ndry...think about the obstruction when it goes untouched or disrupts the total volume

03-08-2012	#12
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: IHs with 2ndry shorty injectors: More flow? Looking at some real-world examples, Strader reports that on a 1,000hp engine, the injectors were originally located 7 inches back from the valves. Doubling this distance to 14 inches was worth 50 hp on top -Hot Rod Magazine __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

03-08-2012	#13
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: IHs with 2ndry shorty injectors: More flow? I am not sure what will result, just not sure why when the center of the nozzle does not change we arrive at a automatic loss in power......... What I do know is that is a clear shot, air is not being forced downward by the boss....no loss in velocity no turbulance, etc If removing the butterflies is worth 3-4 ponies, not sure how free flowing the air would not be the same.... __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

03-08-2012	#14
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: IHs with 2ndry shorty injectors: More flow? Only injector nozzle no no is that do not put the injector more than 45 degrees to the wall __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

03-08-2012	#15
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: IHs with 2ndry shorty injectors: More flow? ...and no I do not think the inj placement moving up 4-5mm is going to add 50hp....I think that point is not really relevant...I am looking at the opportunity to take full advantage of the 36mm 2ndry...think about the obstruction when it goes untouched or disrupts the total volume __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 Last edited by LGAFF; 03-08-2012 at 11:16 PM.