What size injectors?????
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Joined: Mar 2007
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From: Sugar Land TX/Boca Raton FL/Carefree AZ
Originally Posted by JDM7672
what size injectors are u guys running on your turbo application on stock internals??
Its not stock internals though
Last edited by XKR; Aug 22, 2007 at 07:50 PM.
stock motor you can run 650cc injectors with no fuel return system all day long.
if you want to buy a return fuel system then you can use 440s.
pm me if you have any questions...
if you want to buy a return fuel system then you can use 440s.
pm me if you have any questions...
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550's will also work well. You should really do the sizing math though to be better on target with your HP goals. I would suggest going 1 step higher that what is ACTUALLY recommended for your goal though - just to be sure you have enough under a range of circumstances.
Remember the stock injectors are like 280CC's and handle a good 350-~385 HP. At the minimum - 380CC's, like some of the turbo kits provide by default..440's are a GREAT first step though.
Keep in mind - as a general rule - the CC rating is real close to what your goal HP will be. So 440's would get you to about 440 HP - 550's to that range, etc. Once you build the motor, do cams or heads, etc...that theory goes out the window.
Rick
Remember the stock injectors are like 280CC's and handle a good 350-~385 HP. At the minimum - 380CC's, like some of the turbo kits provide by default..440's are a GREAT first step though.
Keep in mind - as a general rule - the CC rating is real close to what your goal HP will be. So 440's would get you to about 440 HP - 550's to that range, etc. Once you build the motor, do cams or heads, etc...that theory goes out the window.
Rick
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Joined: Oct 2005
Posts: 2,381
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From: NY
I have 440 and based on my Utec logs at around 7psi my injector is already hitting 90 at high RPM.
PHP Code:
Mod
RPM MAP TPS Inj#1 Ign
psia % duty deg
5184 7 97 77.5 12.8
5184 6.9 97 78.5 13
5241 6.9 98 78.6 13.1
5249 6.9 98 79.5 13.2
5333 6.7 98 79.6 13.3
5333 6.9 97 81.3 13.2
5393 6.7 97 82.1 13.3
5402 6.8 98 82.3 13.2
5428 6.7 98 82.5 13.4
5473 7 97 83.9 13.4
5428 6.6 97 84.3 13.5
5527 6.7 98 85.2 13.5
5555 6.8 98 85.1 13.6
5583 6.7 97 84.9 13.8
5630 6.7 97 86 13.9
5611 6.7 98 86.4 13.9
5668 6.8 98 86.5 14.1
5707 7 97 86.9 14.3
5737 6.8 98 88.1 14.4
5767 6.7 97 87.5 14.7
5807 6.8 97 87.8 14.6
5827 7 97 88.1 14.6
5847 6.7 97 89.2 14.7
5899 6.8 97 88.5 14.9
5910 6.8 97 89.4 14.7
5920 6.6 97 89.6 14.8
5984 6.7 97 89.6 15
5973 7 97 89.2 15.2
5995 7 97 90.6 15.2
6027 7.1 97 90.5 15.2
6127 7.1 84 89.6 15.3
6093 5.9 1 69.1 19.4
Last edited by FI'ed G; Aug 23, 2007 at 04:19 PM.
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