How manyPSi can the stock turbo and fuel system hold?
#2
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Depends ... how good are you at replacing engines?
Seriously, you could run 13-14psi on the stock injectors and stock fuel pump, but your duty cycles will probably be topped out. It's not very safe to do that ... so I would conservatively say that 12psi should be the max.
Seriously, you could run 13-14psi on the stock injectors and stock fuel pump, but your duty cycles will probably be topped out. It's not very safe to do that ... so I would conservatively say that 12psi should be the max.
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well ima be one to say this, i run 18 psi wit my stock engine and a apexi rx6 turbo, i have my mods listed so all i would say is for drag its prob ok but id go 15 psi of the stockers, im not the smartest cookie and i push my stuff WAY to hard
#6
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Originally posted by ISUposs
the stock intercooler is a limiting factor at 12psi, IMO.
the stock intercooler is a limiting factor at 12psi, IMO.
I will be try to tune non-seq, with clean/balance stock injectors and upgraded SMIC (and a few other goodies) for 14psi and a/f 11.7:1 and see how much power I can make.
After pulling the plugs, looked like I was a little lean.
I'd like to hear people's opinions on that if you don't mind.
#7
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Originally posted by Tomco78
How about stock turbos, but upgraded fuel pump, injectors and ECU (such as the PFC)?
How much can the stock twins take?
How about stock turbos, but upgraded fuel pump, injectors and ECU (such as the PFC)?
How much can the stock twins take?
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Well this is what I'm planning on BNR stage 3 kit with a Greddy type 24 FMIC. i was wondering if I could run this set up at 15 psi (IC limit is 15 psi) with the stock fuel system and ECU? I was reading a turbo magazine and there is a black FD. Stock everything but the IC, Intake, exhaust and Peter Ferrel ECU. and he's making 420 @ the wheels.
#9
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Originally posted by hondasr4kids
Stock everything but the IC, Intake, exhaust and Peter Ferrel ECU. and he's making 420 @ the wheels.
Stock everything but the IC, Intake, exhaust and Peter Ferrel ECU. and he's making 420 @ the wheels.
#11
Originally posted by hondasr4kids
Well this is what I'm planning on BNR stage 3 kit with a Greddy type 24 FMIC. i was wondering if I could run this set up at 15 psi (IC limit is 15 psi) with the stock fuel system and ECU? I was reading a turbo magazine and there is a black FD. Stock everything but the IC, Intake, exhaust and Peter Ferrel ECU. and he's making 420 @ the wheels.
Well this is what I'm planning on BNR stage 3 kit with a Greddy type 24 FMIC. i was wondering if I could run this set up at 15 psi (IC limit is 15 psi) with the stock fuel system and ECU? I was reading a turbo magazine and there is a black FD. Stock everything but the IC, Intake, exhaust and Peter Ferrel ECU. and he's making 420 @ the wheels.
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I just want to run at 15-17 psi but what I'm actually asking was what kind of ECU and fuel system will work with this mods? BNR stage 3, Greddy Type 24 FMIC, then the rest of the works exhaust, intake, etc.
#16
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386.6 rwhp....
from the old thread with stock twins...but he had an upgraded fuel system....
https://www.rx7club.com/forum/showth...hreadid=152260
from the old thread with stock twins...but he had an upgraded fuel system....
https://www.rx7club.com/forum/showth...hreadid=152260
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Originally posted by hondasr4kids
I just want to run at 15-17 psi but what I'm actually asking was what kind of ECU and fuel system will work with this mods? BNR stage 3, Greddy Type 24 FMIC, then the rest of the works exhaust, intake, etc.
I just want to run at 15-17 psi but what I'm actually asking was what kind of ECU and fuel system will work with this mods? BNR stage 3, Greddy Type 24 FMIC, then the rest of the works exhaust, intake, etc.
I have rebuilt stock turbos (the old ones had 100k+ miles so I don't think they went from my boosting), 1300cc sec, FPR, PowerFC w/datalogit.
My duty cycles never or rarely go past 80%. I see 80s only when I'm way up in rpm and boost together.
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If you run more than 12 psi you should upgrade the fuel pump and injectors (I have 1200 secondaries and a walboro). That upgrade is cheap and will allow you to run higher boost RELIABLY. Almost everyone will tell you your'e playing the waiting game with your engine with higher than 12 without the fuel upgrade. If you upgrade the fuel you really need a ECU to go with it. Look at some of the old hats set-ups (Gordon, Riki, etc) to get a good idea of what will and will not work for a reliable upgrade plan.
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Originally posted by DavidDeco
I....
I have rebuilt stock turbos (the old ones had 100k+ miles so I don't think they went from my boosting), 1300cc sec, FPR, PowerFC w/datalogit.
....
I....
I have rebuilt stock turbos (the old ones had 100k+ miles so I don't think they went from my boosting), 1300cc sec, FPR, PowerFC w/datalogit.
....
#22
Originally posted by hondasr4kids
I just want to run at 15-17 psi but what I'm actually asking was what kind of ECU and fuel system will work with this mods? BNR stage 3, Greddy Type 24 FMIC, then the rest of the works exhaust, intake, etc.
I just want to run at 15-17 psi but what I'm actually asking was what kind of ECU and fuel system will work with this mods? BNR stage 3, Greddy Type 24 FMIC, then the rest of the works exhaust, intake, etc.
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Originally posted by SERIES7
Actually, I'm told that the stock ic will support up to 15 lbs.
Actually, I'm told that the stock ic will support up to 15 lbs.
I think it was Max Cooper (may have been someone else) recorded a nearly 100 F degree difference in intake air temps at the track going from the stock IC to the M2 medium. Actually, I think Peter Farrell also noted that (with his IC of course). I think even Mazda would admit that the stock IC is barely adequate for stock 10 psi boost levels.
#24
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The intercooler's max efficiency is up to 15 psi but you could run a few more pounds without ill effects.
http://www.sportcompactcarweb.com/pr...11scc_projrx7/
This was at 12 psi, at 15, you're looking at around 230+ degree F after IC temps. This is an engine killer!
#25
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The intercooler's max efficiency is up to 15 psi but you could run a few more pounds without ill effects.
------------------------------------------------------------------------
...garbage
http://www.sportcompactcarweb.com/p...911scc_projrx7/
This was at 12 psi, at 15, you're looking at around 230+ degree F after IC temps. This is an engine killer!
Read the entire post. He is using a greddy FMIC 24 row.
The intercooler's max efficiency is up to 15 psi but you could run a few more pounds without ill effects.
------------------------------------------------------------------------
...garbage
http://www.sportcompactcarweb.com/p...911scc_projrx7/
This was at 12 psi, at 15, you're looking at around 230+ degree F after IC temps. This is an engine killer!
Read the entire post. He is using a greddy FMIC 24 row.