8 450cc injectors:)

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Old Jan 19, 2003 | 05:03 PM
  #1  
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Default 8 450cc injectors:)

I did some cutting and grinding...poor pics, but you get the idea. Tell me whatcha all think:




Not quite done yet, I still need the other 4 injectors, and I need to drill and tap barb-fittings into the fuel rail; then run fuel hose to each of the 4 staged injectors. Oh ya, also need to clean up around the injector plugs...I had to stop because its about 15 deg. in my garage
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Old Jan 19, 2003 | 05:27 PM
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Default Re: 8 450cc injectors:) (Tinker219)

Sounds nice...too bad I cant really tell much from the pictures. Good luck!
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Old Jan 20, 2003 | 07:12 AM
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Default Re: 8 450cc injectors:) (B18EG6)



a few more pics...still shitty. anybody have a GOOD digi camera fs for around $100?
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Old Jan 20, 2003 | 05:22 PM
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Default Re: 8 450cc injectors:) (Tinker219)

sweet man
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Old Jan 20, 2003 | 05:41 PM
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Default Re: 8 450cc injectors:) (redlineh22a)

please tell me u did that with the mani off...
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Old Jan 20, 2003 | 06:58 PM
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Default Re: 8 450cc injectors:) (BoostedH23a1)

please tell me u did that with the mani off...
Did it with it on...dont worry...complete build by spring(the reason for 8 injectors, so a few aluminum shavings wont hurt anything...
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Old Jan 20, 2003 | 07:05 PM
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Default Re: 8 450cc injectors:) (Tinker219)

coud really tear up everyting.. crank rods pistons, oil pump sleeves... probably not but could happen
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Old Jan 20, 2003 | 07:12 PM
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Default Re: 8 450cc injectors:) (BoostedH23a1)

Considering my car is out in the snowbank, and the engine is in the garage, I highly doubt anything could happen...the valves will most likely keep everything in the manifold anyway.
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Old Jan 20, 2003 | 07:22 PM
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Default Re: 8 450cc injectors:) (Tinker219)

oh its not going into the car b4 the build.. ok..
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Old Jan 20, 2003 | 07:29 PM
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Default Re: 8 450cc injectors:) (Tinker219)

why'd you decide to do that instead of just going with 4 large injectors
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Old Jan 20, 2003 | 07:46 PM
  #11  
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Default Re: 8 450cc injectors:) (gritsak)

why'd you decide to do that instead of just going with 4 large injectors
2 reasons:
1. $
2. idle control
3. gas mileage(hardly a concern when 500whp is a goal)

Im going to program the primary injectors to run until they hit 70% duty cycle, and when that happens, the secondary injectors will turn on...viola! 900cc equivalent injectors, but better control and 1/5th the cost. If for some reason I STILL done have enough fuel, the EMS has 10 injector drivers, and I could theoretically hook up two more injectors somewhere else highly doubtful.
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Old Jan 20, 2003 | 08:06 PM
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Default Re: 8 450cc injectors:) (Tinker219)

8 450cc has better spray pattern then say 4 1000cc.
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Old Jan 20, 2003 | 08:18 PM
  #13  
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Default Re: 8 450cc injectors:) (BoostedH23a1)

8 450cc has better spray pattern then say 4 1000cc.
I agree with you on that too...one downside to my setup is that the injectors spray the fuel right onto the bottom of the I.M. I need to lift the injectors with a spacer...this will help some. The true fix would be to weld on some angled bungs so that the spray was more directed toward the cylinders. BUT, I cant weld aluminum w/an arc welder now can I
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Old Jan 21, 2003 | 04:54 AM
  #14  
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Default Re: 8 450cc injectors:) (Tinker219)

get a heliarch welder.. $$$
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Old Jan 21, 2003 | 05:05 AM
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Default Re: 8 450cc injectors:) (BoostedH23a1)

Umm your going to get crap for air flow in that manifold now. You should have put those extra injectors on the bottom pointing up to keep them out of the maority of the air flow, but otherwise very good work.
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Old Jan 21, 2003 | 05:46 AM
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Default Re: 8 450cc injectors:) (Tinker219)

you can weld aluminum with an arc welder, you just need a decent one with DC capability
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Old Jan 21, 2003 | 05:47 AM
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Default Re: 8 450cc injectors:) (BoostedH23a1)

also what engine management are you going to use? you said ems, are you refering to the AEM unit?
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Old Jan 21, 2003 | 06:11 AM
  #18  
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Default Re: 8 450cc injectors:) (Phoenix GSR)

you can weld aluminum with an arc welder, you just need a decent one with DC capability
Hmm, considering the welder I am using is from 1975(thats a guess), I dont think it would do the trick. It goes from 40-210amps though...heavy duty.
As for management, yes, the AEM EMS unit.
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Old Jan 21, 2003 | 04:27 PM
  #19  
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Default Re: 8 450cc injectors:) (Tinker219)

why'd you decide to do that instead of just going with 4 large injectors

2 reasons:
1. $
2. idle control
3. gas mileage(hardly a concern when 500whp is a goal)

Im going to program the primary injectors to run until they hit 70% duty cycle, and when that happens, the secondary injectors will turn on...viola! 900cc equivalent injectors, but better control and 1/5th the cost. If for some reason I STILL done have enough fuel, the EMS has 10 injector drivers, and I could theoretically hook up two more injectors somewhere else highly doubtful.
to me its just seems easier to get 4 large injectors...by the same you fabricate a bracket, drill into the intake..put all the injectors in..then have to tune...seems like more work then its worth...large injectors only cost like around 400 or less sometime with GB's

plus if you have the aem, i know people in the supra community who have huge injectors (well over 1000cc) and have it idling like factory and still have very good gas milage while cruising around...all in the tuning

but good luck with your setup
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Old Jan 21, 2003 | 04:41 PM
  #20  
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Default Re: 8 450cc injectors:) (gritsak)

why'd you decide to do that instead of just going with 4 large injectors

2 reasons:
1. $
2. idle control
3. gas mileage(hardly a concern when 500whp is a goal)

Im going to program the primary injectors to run until they hit 70% duty cycle, and when that happens, the secondary injectors will turn on...viola! 900cc equivalent injectors, but better control and 1/5th the cost. If for some reason I STILL done have enough fuel, the EMS has 10 injector drivers, and I could theoretically hook up two more injectors somewhere else highly doubtful.

to me its just seems easier to get 4 large injectors...by the same you fabricate a bracket, drill into the intake..put all the injectors in..then have to tune...seems like more work then its worth...large injectors only cost like around 400 or less sometime with GB's

plus if you have the aem, i know people in the supra community who have huge injectors (well over 1000cc) and have it idling like factory and still have very good gas milage while cruising around...all in the tuning

but good luck with your setup
totally agree...with a good stand alone..you'd at least solve #2 and #3
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Old Jan 21, 2003 | 06:01 PM
  #21  
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Default Re: 8 450cc injectors:) (gritsak)

I have maybe an hour into everything. The reason I used 8 DSMs is because they are like $100 for 9 of them. Thanx for the good praise everyone.
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Old Jan 27, 2003 | 03:11 PM
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Default Re: 8 450cc injectors:) (Tinker219)

$100 for 9 injectors.... NICE..... I won't attempt to argue with that, hehe
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