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Bosch 550cc injectors for our motors

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Old 10-25-2015, 04:27 AM
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Old 10-26-2015, 12:20 AM
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Default Re: Bosch 550cc injectors for our motors


Is that $225 each? If so that's about 3 times what they should be.
 
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Old 10-26-2015, 07:50 AM
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Talking Re: Bosch 550cc injectors for our motors

If the fuel pressure is controlled, you can flood our engines at even 22PSIG boost. Larger injectors dont address the problem in my opinion. WW
 
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Old 10-26-2015, 08:06 AM
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Default Re: Bosch 550cc injectors for our motors

Originally Posted by JEFASOLD
Is that $225 each? If so that's about 3 times what they should be.
Check out the link. It is for a set of 6! The adapters for the injector harness are $25. of that. They are $33. each plus $4. each for the adapters as these injectors have an EV-14 clip and we have an EV-1 I believe. I was shocked at the condition of the o-rings of the stock injectors but after 14 years I suppose that was to be expected. I would suggest changing the O-rings themselves in not the injectors also at that price.
I am repeating another post here but I am using a tune for 450cc injectors that was generated for race fuel(TORCO @ full strength) which added 1.5* of timing and 30whp according to Jerry at E/C. I adjust for the extra timing with a richer amount of fuel. It runs in the 11:1 range with 11.5-11.9:1 my target. I don't track the car and am planning to do the exhaust with a DYNO before and after. Hoping to gain 15whp+. I either have the parts or have them on order. I'll make the call to the shop with the DYNO when all parts are in hand.Then if Rob's headers show 15whp+ in independent testing I will likely go for those.
Mark
 
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Old 10-26-2015, 08:20 AM
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Default Re: Bosch 550cc injectors for our motors

Originally Posted by waldig
If the fuel pressure is controlled, you can flood our engines at even 22PSIG boost. Larger injectors dont address the problem in my opinion. WW
I tried to get away with the stock 450cc injectors but Jerry at E/C said he had already pushed the stock injectors past the duty cycle he likes and it was he who recommended I get larger injectors. Now I can run 20-22psi boost and not go lean but run AFR's in the mid 11:1 range but not going into the 12:1 range. I could NOT address the lean issue with the adjustable regulator alone. I could get the first 2 gears to run OK but then the rest ran pig rich.
I am confused by your statement that if the fuel pressure is controlled our engines can flood at 22PSI. Could you clarify that please? Given the state of the O-rings on my stock injectors I am glad I did the swap as they had hardened to where it is likely they had started to leak. Highly recommend everyone change the O-rings at least. With stock boost the 450cc injectors are fine, with a 62mm SC pulley the motor is likely borderline. AFR gauge is a must. I imagine my motor was running lean up top when I ran just the 65mm SC pulley. Mark
 
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Old 10-26-2015, 12:14 PM
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Default Re: Bosch 550cc injectors for our motors

Originally Posted by Sweet2002
I tried to get away with the stock 450cc injectors but Jerry at E/C said he had already pushed the stock injectors past the duty cycle he likes and it was he who recommended I get larger injectors. Now I can run 20-22psi boost and not go lean but run AFR's in the mid 11:1 range but not going into the 12:1 range. I could NOT address the lean issue with the adjustable regulator alone. I could get the first 2 gears to run OK but then the rest ran pig rich.
I am confused by your statement that if the fuel pressure is controlled our engines can flood at 22PSI. Could you clarify that please? Given the state of the O-rings on my stock injectors I am glad I did the swap as they had hardened to where it is likely they had started to leak. Highly recommend everyone change the O-rings at least. With stock boost the 450cc injectors are fine, with a 62mm SC pulley the motor is likely borderline. AFR gauge is a must. I imagine my motor was running lean up top when I ran just the 65mm SC pulley. Mark
What are these "Rob's headers" u keep talking about? Never knew he offered such an item for either of our cars.
 
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Old 10-26-2015, 01:26 PM
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Default Re: Bosch 550cc injectors for our motors

He showed us a set he made at Woodward. Larger pipe, and more open ports.
 
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Old 10-26-2015, 01:27 PM
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Default Re: Bosch 550cc injectors for our motors

Originally Posted by pioneer4x4
He showed us a set he made at Woodward. Larger pipe, and more open ports.
How much money?
 
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Old 10-26-2015, 02:47 PM
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Default Re: Bosch 550cc injectors for our motors

I have no idea, sorry.
 

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