smaller injectors
12-03-03, 07:22 PM
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smaller injectors
A buddy of mine has an 89rx-7 turbo and he's using 250 as primary and 370 as secondary injectors...how the heck is he doing this? To me it seems to be a bad idea, but then again I don't know much about rotary engines..the injectors he has should support around 240hp max?
*Also he tells me even with the 250 and 370 injectors he's dumping an excessive amount of fuel at idle...fire from exhaust and stinging smell of gas.
-David
*Also he tells me even with the 250 and 370 injectors he's dumping an excessive amount of fuel at idle...fire from exhaust and stinging smell of gas.
-David
12-03-03, 07:57 PM
#3
I'm a boost creep...
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Depends what pressure the flow of those injectors are measured at. Stock injectors flow 550cc/min @ 250kPa but will only flow ~300cc/min @ 75kPa.
So they either they were flowed at a lower pressure or he's full of it…
So they either they were flowed at a lower pressure or he's full of it…
12-03-03, 10:11 PM
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SOLD THE RX-7!
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he is probably just wrong... those injectors would make around 100hp.... stock is 550 and 550 and they don't even make 300.
edit: or he's using injectors in pounds instead of cc... forget the conversion on that. 370 would be HUGE though. maybe 37
edit: or he's using injectors in pounds instead of cc... forget the conversion on that. 370 would be HUGE though. maybe 37
Last edited by Scott 89t2; 12-03-03 at 10:15 PM.
12-04-03, 07:41 AM
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You do that, cause I'm curious... but there is no way in hell that those injectors are rated 250 and 350 MAX duty cycle in CC/Minute or he'd have roached that motor the first time he gave it boost.. Even if he has a haltech and is running them full duty cycle that motor would have nuked the first time it saw 5 psi of boost.
You are right to question this, because if you go ask for 250 or 370 injectors from a Rice Shop.. you are going to get itty bitty injectors because they are automatically going to give you ones in cc/minute. However, I've never even tried to buy injectors of that size so i don't even know if they make those sizes!!
I suspect that your buddy is a Squid, and doesn't really have the righ numbers
You are right to question this, because if you go ask for 250 or 370 injectors from a Rice Shop.. you are going to get itty bitty injectors because they are automatically going to give you ones in cc/minute. However, I've never even tried to buy injectors of that size so i don't even know if they make those sizes!!
I suspect that your buddy is a Squid, and doesn't really have the righ numbers
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12-06-03, 12:05 AM
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Well I got to take a look at the injectors that were on the car, and they are 550s. I've been bothering him all day long about these numbers. I think he looked up the specs on the web or a manual. Hopefully he hasn't used the 370cc injectors because I did see a few of them lying around which were originally for a hyundai..bah.
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