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PostPosted: Tue Sep 30, 2008 9:59 pm 
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Location: Nashville/Atlanta
While we are talking about E85, what do you plan to swap your walbro out for?


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PostPosted: Wed Oct 01, 2008 4:32 am 
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Some call me a god
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full blown makes a nice dual pumper and also buschur sells em

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PostPosted: Thu Oct 02, 2008 4:09 pm 
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1595 cc's of fury

Joined: Wed Apr 23, 2003 3:15 pm
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Location: Rastle Cock, CO
I doubt I'm out of fuel yet, Hemi-colt got to 570 whp on the same fuel set-up I have with a 63t/fp3065 built car vs my 61t/50trim. The 1000 cc injectors are right at 100% but he was running them way over 100% to get those numbers. I'm was probably in the 425 whp range corrected, you have to use corrected numbers for fuel because even at elevation we still need just as much fuel as low elevation guys...wierd huh.

I'm putting my 1150's back in though and will probably have to add a few more supporting mods.

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PostPosted: Thu Oct 02, 2008 4:19 pm 
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Isn't an injector static over 80% duty-cycle anyway? I always thought you wanted to keep the IDC's below 80%, but that's pretty tough to do without going massively huge, and then your idle and driveability are compromised.

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91 GSX - 511fwhp and 352 lb/ft 25psi 110 octane, 7.68 @ 95.9mph 1/8th 21psi 91 octane, 11.93 @ 112.9mph, 117.7mph best trap speed, 20psi 91 octane
98 Volvo S70 T5 - DD

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PostPosted: Thu Oct 02, 2008 6:41 pm 
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Location: Kennesaw, GA
Man, 1150's on the 1.6L? That is alot of fuel for the 1.6L. Is it because you are running E85? I know the 1.6L doesn't need as much fuel to run a higher psi of boost compared to the 2.0L. I mean, I have 450cc injectors with my BB 60-1 running right now 20 psi. My A/F is 11.0... is it because I am on 93 octane and a fully stock motor? Or is this A/F about right for what I have? Also, I thought the Walbrp 255 was good up to around 600whp?


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PostPosted: Thu Oct 02, 2008 6:47 pm 
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Some call me a god

Joined: Thu May 05, 2005 2:31 am
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Location: Commerce City, Co
I have 1150's and E85 in my colt as well. And although I have not looked at my duty cycles in a while, I kinda think I have too much fuel. I have my sliders no less than -35% all the way across in dsmlink. My car studders and breaks up anything below 12.1:1 on the gasoline scale.

But my 1.6 is running those injectors and that fuel just fine for the most part.

Steven

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PostPosted: Thu Oct 02, 2008 7:05 pm 
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Quote:
I know the 1.6L doesn't need as much fuel to run a higher psi of boost compared to the 2.0L.
Less displacement = greater need for fuel. You'll never see a V8 guy using 1,000cc injectors unless he's trying to make ridiculous power.

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91 GSX - 511fwhp and 352 lb/ft 25psi 110 octane, 7.68 @ 95.9mph 1/8th 21psi 91 octane, 11.93 @ 112.9mph, 117.7mph best trap speed, 20psi 91 octane
98 Volvo S70 T5 - DD

http://www.facebook.com/captaintonus


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PostPosted: Thu Oct 02, 2008 7:33 pm 
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Quote:
Quote:
I know the 1.6L doesn't need as much fuel to run a higher psi of boost compared to the 2.0L.
Less displacement = greater need for fuel. You'll never see a V8 guy using 1,000cc injectors unless he's trying to make ridiculous power.
A V8 normally has twice as many injectors.

The less displacement needing fuel idea makes no sense, though.

Also you can't judge how much fuel you need by looking at boost numbers. A T25 will not be putting out anywhere near as much air/power at 18psi as a GT35 will be.


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PostPosted: Thu Oct 02, 2008 7:50 pm 
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Quote:
Quote:
Less displacement = greater need for fuel. You'll never see a V8 guy using 1,000cc injectors unless he's trying to make ridiculous power.
A V8 normally has twice as many injectors.

The less displacement needing fuel idea makes no sense, though..
Well less displacement means you're gonna have to rev higher in most cases, which uses a LOT more fuel. V8 guys always have a :o look on their face when I tell them I'm running 96#/hr injectors in my car, because guys in their world who are trying to break the sound barrier are running mayyybe 75#/hr injectors.

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91 GSX - 511fwhp and 352 lb/ft 25psi 110 octane, 7.68 @ 95.9mph 1/8th 21psi 91 octane, 11.93 @ 112.9mph, 117.7mph best trap speed, 20psi 91 octane
98 Volvo S70 T5 - DD

http://www.facebook.com/captaintonus


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PostPosted: Fri Oct 03, 2008 10:02 am 
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Joined: Fri Dec 01, 2006 10:41 am
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Location: Grand Rapids, MI
Quote:
Quote:
I know the 1.6L doesn't need as much fuel to run a higher psi of boost compared to the 2.0L.
Less displacement = greater need for fuel. You'll never see a V8 guy using 1,000cc injectors unless he's trying to make ridiculous power.
Airflow is air flow and that requires fuel. They have more injectors which means that they can divide the size in half and get the same amount of output. Reving shouldn't have much to do with it because their larger displacement means that they move the same amount of air with less effort (RPMs.)


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PostPosted: Fri Oct 03, 2008 10:36 am 
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2nd Banana
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Quote:
Reving shouldn't have much to do with it because their larger displacement means that they move the same amount of air with less effort (RPMs.)
Yeah, that's kind of what I meant. If an engine isn't working as hard, wouldn't it require less fuel to do the job that's needed of it?

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91 GSX - 511fwhp and 352 lb/ft 25psi 110 octane, 7.68 @ 95.9mph 1/8th 21psi 91 octane, 11.93 @ 112.9mph, 117.7mph best trap speed, 20psi 91 octane
98 Volvo S70 T5 - DD

http://www.facebook.com/captaintonus


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PostPosted: Fri Oct 03, 2008 6:07 pm 
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1595 cc's of fury

Joined: Wed Apr 23, 2003 3:15 pm
Posts: 1616
Location: Rastle Cock, CO
I've always purely based injector need based on air volume projected devided by the number of cylinders. A v8 moving 1000 cfm of air will have injectors nearly half the size of a 4 cylinder also moving 1000 cfm of air. Its a pretty simple equation. As mentioned though, getting massive injector's tuned out on smaller displacements is pretty hard. 1150's are 20% bigger injectors offboost to a 1.6L than they are to a 2.0L - once the turbo spools however, your figures are then based primarly on the amount the turbo flows at a pressure level. Identical turbo's on a 1.6L and 2.0L running the same boost, are moving the same amount of air, just at different rpm points.


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