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Old 01-01-2004, 14:50   #1 (permalink)
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injectors?

The blue au v8 injectors are 24lb??? How do they go for power capability? I'm sure there's a sum to work this out but i have no clue what it is!
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Old 01-01-2004, 18:32   #2 (permalink)
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Re: injectors?

To calculate max hp simply multply flow rate of the injector by 2.04. So for 24lb injectors, max hp is 49hp per injector or 392hp for a V8. There are more accurate calculations factoring in duty cycle etc, but this is an easy guide.
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Old 01-04-2004, 15:10   #3 (permalink)
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Re: injectors?

beautiful. thanks!
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Old 01-04-2004, 15:31   #4 (permalink)
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Re: injectors?

Imo if you want over 200rwkw bigger injectors should be thought of. 30Lp / 315cc would be better..Idle would still be o/k....
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Old 01-04-2004, 15:36   #5 (permalink)
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Re: injectors?

any idea of cost or brands to go for
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Old 01-04-2004, 15:41   #6 (permalink)
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Re: injectors?

Don't you mean 2.04 x flow rate of heads in cfm = horsepower at flywheel
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Old 01-04-2004, 17:26   #7 (permalink)
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Re: injectors?

Quote:
Originally Posted by ebxr8240
Imo if you want over 200rwkw bigger injectors should be thought of. 30Lp / 315cc would be better..Idle would still be o/k....
Yep true..

I think AP's old XR8 still had the 24lb units though when it was making 220rwkW+?? I could be well wrong though!

30lb injector kit is the same price as the 24lb!! Currently being US$219, so convert, add import duties / taxes, and freight... also see what price the good man John (LunaticSVT) can do for you as he distributes a metric assload of parts now in the States!

http://store.summitracing.com/partde...MS%2DM9593B302
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Old 01-04-2004, 17:35   #8 (permalink)
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Re: injectors?

At what point should i opt to change my MAS/MAF ???(dunno much about) Now or post injector change?
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Old 01-04-2004, 20:31   #9 (permalink)
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Re: injectors?

Same time ideally. If you bump up your injector size, you either compensate by "tricking" the computer with a new MAF, or you have to get some computer work (uni-chip, tweecer etc etc).
As Sparkles said, injectors are cheap in the US (better than the $350 EACH I was quoted the other day for 19lbs from Ford). Another good thing, MAFs are cheap too.

Also, its a very good idea to check your A/F ratio after changes such as this. Even though the MAF & Injectors are supposed to be right, they can still be out, and a lean condition is baaaad mmkay !

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Old 01-04-2004, 21:43   #10 (permalink)
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Re: injectors?

sweet! Now to ask another possibly stupid question. changing injectors should happen before new manifold or after. I'm planning to get the ute on a dyno real soon to see how her vitals are reading. Is the stock AU maf a good flowing device? What can i hope to get out of the maf change alone?
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