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what size injectors for all motor?

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Old Jan 4, 2003 | 05:42 AM
  #1  
NVMYSi's Avatar
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Default what size injectors for all motor?

I have a B18C5 built for high compression and large cams and need to upgrade injectors. I am thinking 310's but also have been looking into maybe 440's is that to big? Also I am not sure if I understand the difference between saturated and regular injectors (I am learning, be nice). Thanks...
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Old Jan 4, 2003 | 06:16 AM
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H23vtecEG's Avatar
 
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Default Re: what size injectors for all motor? (NVMYSi)

prelude 320 injectors would be perfect. for all motor. but then again you didnt mention what compresion and how much power you want to get. 440"s are way too big unless you have individual throttle boddies. if you have a street diven car with no more then 12:1 compression, 320's are great, also a chipping of the ecu with custom fuel curve would help a lot. but then again if you go to a local performance shop they could help you out and dyno the car for just the right mount of fuel. you cant do things like this without some sort of tunning.
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Old Jan 4, 2003 | 10:36 AM
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Default Re: what size injectors for all motor? (H23vtecEG)

As far as I know preludes, are 240s, and you would need a resister box, or caps. I have rc 310's, and they are about right @ 12.0:1 fully built. The Progress Springs SI that has the land speed record for a civic has RC 310's!
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Old Jan 4, 2003 | 05:08 PM
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sgT
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Default Re: what size injectors for all motor? (b20civicvtec)

4g h22a injectors are like 340-360cc and require a resistor box
5g h22a injectors are 290cc and do not require a resistor box

the size of the injector is dependant on what you plan to control it with
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Old Jan 4, 2003 | 08:38 PM
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Default Re: what size injectors for all motor? (sgT)

no no no you guys are both wrong... B-series are 240 and H-series 270...LOL JK im just talkin out of my ***...
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Old Jan 4, 2003 | 10:17 PM
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Default Re: what size injectors for all motor? (10K2HVN)

I say if you are going to go with injectors then definatly RC would be the choice. Many all-motor 10 sec cars have ran RC injectors and in turn seen great results. I also agree that 440's are too large and 310's would be the better route. -HIT


[Modified by HookUpsImportTek, 11:18 PM 1/4/2003]
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Old Jan 4, 2003 | 11:06 PM
  #7  
All Motor Rex's Avatar
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Default Re: what size injectors for all motor? (HookUpsImportTek)

Yea, 440's would be too big, go with the RC 310's.
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Old Jan 4, 2003 | 11:59 PM
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Default Re: what size injectors for all motor? (sgT)

4g h22a injectors are like 340-360cc and require a resistor box
5g h22a injectors are 290cc and do not require a resistor box

the size of the injector is dependant on what you plan to control it with
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Old Jan 5, 2003 | 12:08 AM
  #9  
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Default Re: what size injectors for all motor? (NVMYSi)

OBD1 lude injectors r like 310 or 320 where OBD2 lude injectors run 290. RC 310s worked for me for my 1.8L but next yr im jumpin up to a 2L and now im runnin 370s. alot of guys ive seen that run hondata say they need 440s.
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Old Jan 5, 2003 | 12:39 AM
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Default Re: what size injectors for all motor? (NVMYSi)

I am running on stock 240cc injectors, but they are running at close to 100% duty cycle at 8,500+ rpm. Going with the RC 310's and see how they work. I would say that 440cc is overkill for all motor, especially a 1.8l motor.
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Old Jan 5, 2003 | 03:11 AM
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Default Re: what size injectors for all motor? (sgT)

4g h22a injectors are like 340-360cc and require a resistor box
5g h22a injectors are 290cc and do not require a resistor box

the size of the injector is dependant on what you plan to control it with
is that true? 5g injectors don't need the resistor box... thanks for the info


[Modified by buddha429, 6:11 AM 1/5/2003]
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Old Jan 6, 2003 | 09:27 AM
  #12  
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Default Re: what size injectors for all motor? (buddha429)

4g h22a injectors are like 340-360cc and require a resistor box
5g h22a injectors are 290cc and do not require a resistor box

the size of the injector is dependant on what you plan to control it with
is that true? 5g injectors don't need the resistor box... thanks for the info


[Modified by buddha429, 6:11 AM 1/5/2003]
97 and up lude injectors are 290cc and dont need a resistor box b/c they are high impedence injectors.
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Old Jan 6, 2003 | 09:55 AM
  #13  
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Default Re: what size injectors for all motor? (DefiantGSR)

You may be able to max out if you go with 310's... I would look into RC 370's they should be perfect.... 440's will work too, you just don't need that much... Keep your FP and duty cycle down and it will be nicer on your injectors... Latez
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Old Jan 6, 2003 | 11:30 AM
  #14  
Jeff C's Avatar
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Default Re: what size injectors for all motor? (NVMYSi)

Perhaps this will help...http://www.rceng.com/technical.htm
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Old Jan 6, 2003 | 03:40 PM
  #15  
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From: Nashua, NH, USA
Default Re: what size injectors for all motor? (Jeff C)

Ill also 2nd at least 370cc's for a B18. I run 440cc's on my H22A 5th gen. lude.
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