ms3 prc heads and out of injector?
No really the 30 SVOs are really alittle bigger in an LS1 LIke they said a 34 or something but, cause 42s are almost the same price theres no real reason not to get them. they will ahve a lower duty cycle (wich means not have to work as hard ( possible last longer humm)) and there is no down side to a bigger injector.
you can always upgrade , add a dry kit whatever and you will be ok with the 42s
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Over injecting a motor is unnecessary and counter productive.
The fuel distribution in a bigger injector is different. What you want is the best atomization (the smallest particles) of fuel you can have to mix with air for best results.
While bigger injectors will help at top rpm feeding, the bottom ones will suffer and that is where you spend most of your time.
Please get off this bigger is better. In a motor you need the RIGHT part not the biggest you can fit to make it go faster.
The fuel distribution in a bigger injector is different. What you want is the best atomization (the smallest particles) of fuel you can have to mix with air for best results.
While bigger injectors will help at top rpm feeding, the bottom ones will suffer and that is where you spend most of your time.
Please get off this bigger is better. In a motor you need the RIGHT part not the biggest you can fit to make it go faster.
Originally Posted by PREDATOR-Z
Over injecting a motor is unnecessary and counter productive.
The fuel distribution in a bigger injector is different. What you want is the best atomization (the smallest particles) of fuel you can have to mix with air for best results.
While bigger injectors will help at top rpm feeding, the bottom ones will suffer and that is where you spend most of your time.
Please get off this bigger is better. In a motor you need the RIGHT part not the biggest you can fit to make it go faster.
The fuel distribution in a bigger injector is different. What you want is the best atomization (the smallest particles) of fuel you can have to mix with air for best results.
While bigger injectors will help at top rpm feeding, the bottom ones will suffer and that is where you spend most of your time.
Please get off this bigger is better. In a motor you need the RIGHT part not the biggest you can fit to make it go faster.
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
SVO 30's
I see you have a Racetronix pump, did you get the harness with that?
If not, get the harness, that will get you a 62 psi at the rail.
And for the future, get a regulator at the rail with a return line, that way you can adjust for presure at WOT and maintain that 58 psi needed.
Wet doesn't need bigger injectors.
I see you have a Racetronix pump, did you get the harness with that?
If not, get the harness, that will get you a 62 psi at the rail.
And for the future, get a regulator at the rail with a return line, that way you can adjust for presure at WOT and maintain that 58 psi needed.
Wet doesn't need bigger injectors.
Originally Posted by PREDATOR-Z
SVO 30's
I see you have a Racetronix pump, did you get the harness with that?
If not, get the harness, that will get you a 62 psi at the rail.
And for the future, get a regulator at the rail with a return line, that way you can adjust for presure at WOT and maintain that 58 psi needed.
Wet doesn't need bigger injectors.
I see you have a Racetronix pump, did you get the harness with that?
If not, get the harness, that will get you a 62 psi at the rail.
And for the future, get a regulator at the rail with a return line, that way you can adjust for presure at WOT and maintain that 58 psi needed.
Wet doesn't need bigger injectors.
and thats what i have at the rail is 62psi LS1 Tech Stories
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Verdad Gallardo TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Originally Posted by 35thls1ss19
yea i got the harrness with it and thats what i have at the rail is 62psi
and thats what i have at the rail is 62psi just for your info, I run SVO 30s with PNP racetronix 255, harness and FPR at rail AND I shoot up to 200 dry.
NA I'm at 72% duty at WOT and I only max out 97% on a 200 shot (for a measely 10 sec).
That is ~ 620 rwhp
That is to show you how important keeping 57/58 psi at wot is or your injector size.
Originally Posted by PREDATOR-Z
That is exactly what I'm talking about.
just for your info, run SVO 30s with PNP racetronix 255, harness and FPR at rail AND I shoot up to 200 dry.
NA I'm at 72% duty at WOT and I only max out 97% on a 200 shot (for a measely 10 sec).
That is ~ 620 rwhp
That is to show you how important keeping 57/58 psi at wot is or your injector size.
just for your info, run SVO 30s with PNP racetronix 255, harness and FPR at rail AND I shoot up to 200 dry.
NA I'm at 72% duty at WOT and I only max out 97% on a 200 shot (for a measely 10 sec).
That is ~ 620 rwhp
That is to show you how important keeping 57/58 psi at wot is or your injector size.
Originally Posted by Jpr5690
just got my ms3 cam and prc heads install finished and when i went for a tune the car ran lean as hell (15:1) and i had a 98%+ injector duty cycle... i did'nt think i needed bigger injectors for a h\c swap but its lookin that way....
Was this being tested at the tailpipe after the cats?
Originally Posted by Jpr5690
just got my ms3 cam and prc heads install finished and when i went for a tune the car ran lean as hell (15:1) and i had a 98%+ injector duty cycle... i did'nt think i needed bigger injectors for a h\c swap but its lookin that way....
Was this being tested at the tailpipe after the cats?
]
i got a retune scheduled with people who actually know what their doing next weekend and i have new injectors that just cam in today ill post up how this turns out im thinkin it lookin at another 30+ hp on the way
Originally Posted by Jpr5690
im just gonna get a set of 42's and call it a day ... i was just a little concerned but hell since its common for this to happen its all good .. hopefully ill have real numbers in a week and ill post em up
Last edited by Mr.Nitrous; Feb 18, 2006 at 05:06 PM.
10 Second Club
Joined: Jul 2004
Posts: 366
Likes: 0
From: Small Town, Tn
Well, I dont have any dyno numbers yet. I just wanted to post up and tell the man congrats on his cam and heads install. Good choice on cams, I have one and sick uptop power. Good luck on the injector issue cause I am sure I have the same issue, just havent checked it yet.