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Location: Kita-Ku, Sapporo, Japan
Registered: January 2003
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Re: Brake Specific Fuel Consumption/Injector Sizing/Top feed injectors
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Thu, 03 March 2005 03:58

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i would initially just go for it... (unless you are planning higher rpm than normal).
once you get up past about 6000rpm, you also need to choose injector size based on the available time to inject.
if you do plan to go to higher rpm than stock, i would choose injectors based on that.
for example, for my 1.3L, a 145cc/min is ok for 6000rpm, but for 8000 i need 180cc/min
from Megatune (MS tuning prog). 350cc/min with 12:1 AFR and 100% VE gives 11.6ms pulse.
thats close to 8300rpm.
for 250cc/min, it's 16.3ms, which is about 5900rpm...
so even for the same efficiency, the rpm (above 6000) will dramatically affect the injector sizing...
if it was me, and i was gonna take to motor to 8000rpm, i would go straight for 350cc/min.
(unless my calcs are wrong )
Cya, Stewart
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| Subject | Poster | Date |
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What uses large Top feed injectors?
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CrUZsida | Thu, 03 March 2005 01:49 |
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Re: Brake Specific Fuel Consumption/Injector Sizing/Top feed injectors
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oldcorollas | Thu, 03 March 2005 03:58 |
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Re: Brake Specific Fuel Consumption/Injector Sizing/Top feed injectors
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oldcorollas | Thu, 03 March 2005 04:02 |
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Re: Brake Specific Fuel Consumption/Injector Sizing/Top feed injectors
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CrUZsida | Thu, 03 March 2005 04:06 |
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Re: Brake Specific Fuel Consumption/Injector Sizing/Top feed injectors
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oldcorollas | Thu, 03 March 2005 04:26 |
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Re: Brake Specific Fuel Consumption/Injector Sizing/Top feed injectors
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CrUZsida | Thu, 03 March 2005 04:29 |
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Re: Brake Specific Fuel Consumption/Injector Sizing/Top feed injectors
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CrUZsida | Thu, 03 March 2005 04:29 |
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Re: What uses large Top feed injectors?
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Skip | Thu, 03 March 2005 04:38 |
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Re: What uses large Top feed injectors?
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CrUZsida | Thu, 03 March 2005 04:42 |
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Re: What uses large Top feed injectors?
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10sec_rx7 | Thu, 03 March 2005 05:11 |
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Re: What uses large Top feed injectors?
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CrUZsida | Thu, 03 March 2005 05:13 |
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Re: What uses large Top feed injectors?
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10sec_rx7 | Thu, 03 March 2005 05:16 |
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Re: What uses large Top feed injectors?
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CrUZsida | Thu, 03 March 2005 05:18 |
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Re: What uses large Top feed injectors?
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10sec_rx7 | Thu, 03 March 2005 05:20 |
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Re: What uses large Top feed injectors?
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CrUZsida | Thu, 03 March 2005 05:22 |
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Re: What uses large Top feed injectors?
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10sec_rx7 | Thu, 03 March 2005 05:24 |