Help me choose injectors
Help me choose injectors What's up guys!
She's coming along and getting parts together. All I need are injectors and pushrods.
Here's my combo,
It's a stock inch with CNC'd 243s from livernois
Its got an MS4 cam a fast 102/102.
I'm liking the Siemens deka 60s and the green giant 42s. Both are rated at 39psi
Here's my reasoning.
With the 60s I'll have some room to grow. At the power I'll be at, I'm figuring 35 percent duty cycle. Problem I've read is that the idle quality will suffer because the injector opening time at idle is too long and it'll run really rich and shitty.
The green Giants are 42s and should put me around 50. I'll still have some room to grow, but from what I've read about the idle quality, these would be better.
So my questions are suppose I run the 60s and try to tune them to idle decent and have plenty of fuel for future
Or run the 42s, have a really good idle quality, have enough for for now, but outgrow them.
Thanks guys!
She's coming along and getting parts together. All I need are injectors and pushrods.
Here's my combo,
It's a stock inch with CNC'd 243s from livernois
Its got an MS4 cam a fast 102/102.
I'm liking the Siemens deka 60s and the green giant 42s. Both are rated at 39psi
Here's my reasoning.
With the 60s I'll have some room to grow. At the power I'll be at, I'm figuring 35 percent duty cycle. Problem I've read is that the idle quality will suffer because the injector opening time at idle is too long and it'll run really rich and shitty.
The green Giants are 42s and should put me around 50. I'll still have some room to grow, but from what I've read about the idle quality, these would be better.
So my questions are suppose I run the 60s and try to tune them to idle decent and have plenty of fuel for future
Or run the 42s, have a really good idle quality, have enough for for now, but outgrow them.
Thanks guys!
Last edited by Fah Cue; Jan 28, 2020 at 11:13 PM.
Are you staying 93 octane or e 85? if staying 93 just get some stock ls3/7's. They are cheap enough that if you change directions in the future you wont be out a bunch of money and should be able to re sell them easy enough.
I was tossing the idea around early on about goin with the short 3/7, injectors, but I read about guys having issues with the spacers, whether to put the spacers above the injectors or below, which spacers are better. I just couldn't get there.
I got a new in box oem ls2 rail for 77 shipped, so I started looking real hard at ls2 ev14s, but they are more then I need to spend.
Decided to go ls1 style because they're cheaper, but just as good, a plethora of data is available, and the rail situation is easily handled
I'm staying pump gas. May throw some 110 in there once in a while one I get a wideband.
What's your duty cycle? Idle quality?
iirc your combo is pretty similar to what mine will be.
Do you have an hp tune file you could share?
TECH Junkie
Joined: Nov 2013
Posts: 3,913
Likes: 366
From: White Bear, Mn
I run ls3/7 injectors in my car with a fast 102. Fast spacers under the injector, supposedly the spacer is better on top but seems to work just fine to me? ls3/7 is easily found also for the ls1/411 ecm. The gtp’s do work well though, the only thing I question about them is how closely they are flow wise. They are ugly but they do work.
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Where'd you get yours? I bought some used ones on the marketplace here and am not sure if I should send them out to get serviced before putting them on to get tuned. That would be like $160 minimum on top fo the $75 I paid here which would put me at the price of new ones basically or at least flow matched and verified.
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Verdad Gallardo TECH Junkie
Joined: Nov 2013
Posts: 3,913
Likes: 366
From: White Bear, Mn
Where'd you get yours? I bought some used ones on the marketplace here and am not sure if I should send them out to get serviced before putting them on to get tuned. That would be like $160 minimum on top fo the $75 I paid here which would put me at the price of new ones basically or at least flow matched and verified.
They said they were cleaned and flowed but I did not get a sheet with them.
The only thing I did was put some air pressure to them to make sure none were stuck open.
I just saw some out of Denver for $90 called Injectordyne. Says they are cleaned and flow matched for $90 and are Bosch GTP remans. I might go that route instead of gambling on the ones I have now.
I run ls3/7 injectors in my car with a fast 102. Fast spacers under the injector, supposedly the spacer is better on top but seems to work just fine to me? ls3/7 is easily found also for the ls1/411 ecm. The gtp’s do work well though, the only thing I question about them is how closely they are flow wise. They are ugly but they do work.