2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
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just want to be safe

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Old 03-10-05, 04:27 AM
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just want to be safe

ok i am getting my 10ae ready to be finished i have a few things done to it
street port, fmic, fcd,intake, 3.15" turbo back exhaust, pullies, clutch, flywheel, fluidyne radiator, all 5 solid mounts, bov, boost controller, and ps,ac,smog all removed, and electric fan, i think thats most of it what would be a safe but healthy psi to run at?
Old 03-10-05, 04:36 AM
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You havent mentioned a ported wastegate, so I'd imagine that you'd have trouble controlling boost...

Even if you had, the stock turbo pushes like 10psi max I believe before inefficiency kicks in.

You should seriously look at the BNR stage's over at rx7store.net
your not finished spedning money on your car just yet
Old 03-10-05, 04:43 AM
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You havent mentioned a ported wastegate, so I'd imagine that you'd have trouble controlling boost...

Even if you had, the stock turbo pushes like 10psi max I believe before inefficiency kicks in.

You should seriously look at the BNR stage's over at rx7store.net
your not finished spedning money on your car just yet
Old 03-10-05, 04:49 AM
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yeah i know that its gonna be a huge money pit but i just want to let her feel the street again she hasnt been on the road in 4 years
you talking about an aftermarket turbo bnr stages?
Old 03-10-05, 06:02 AM
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would it matter if he had a ported waste gate or not becuase he has a boost controller to keep it at a certain level, i could be wrong, i no very little of the t2
Old 03-10-05, 06:25 AM
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i think the boost controller controls the wastegate.............so it isn't necessarily unrelated
Old 03-10-05, 07:40 AM
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i think most people here understand that an rx7 is a money pit, but i just hink that its still cheaper then buying a new car
Old 03-10-05, 08:59 AM
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Originally Posted by BlaCkPlaGUE

Even if you had, the stock turbo pushes like 10psi max I believe before inefficiency kicks in.
c'mon. cmon..... come on........ I was boosting 15 on my 88 tii, and it pulled a lot faster than at 10 psi. stock top mount, 3" to stock catback, intake, FCD, safc, under drive pullies, turbo xs boost controller.

come on.....
Old 03-10-05, 09:41 AM
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A boost controller does control the wastegate however it can only make more boost over what you have now it cant lower boost levels. The problem with the wastegate a lot of people have is boost creap meaning. you set the boost controller at 12 psi and from about 5k and up you notice that the boost seems to creep to sometimes even 16 psi but the next run only hits 14. its uncontrolled boost because the wastegate cant seem to let exhast out the tiny stock hole quick enough because the huge high flowing exhaust you have pushed more exhaust out more quickly. SO what you do is port out the hole where the plunger or flapper for the wastegate opens and closes so that more exhaust can pass through this hole. Do a search IF YOUR having this problem. If not I would say you could push 15 psi IF you get a fd fuel pump or walbro and possibly some 720 sec injectors. bec Fuel will limit you (you didnt mention you had upgraded injectors or a fuel pump). So get at least a walbro and have it tuned

Last edited by bigturbo; 03-10-05 at 09:48 AM.
Old 03-10-05, 03:45 PM
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yes i need to get a pump i can get a great deal on a walbro 255 i believe it was will this pump do
and rex i see you said ?safc? i see it all the time and have never asked what it was so please do me the honor
so what will be a decent psi to run at
anyone have suggestions
safe but still push
Old 03-10-05, 04:06 PM
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????????
Old 03-10-05, 04:27 PM
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Do you have a fuel computer (piggyback or otherwise)?

How about gauges?
Old 03-10-05, 04:34 PM
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i have boost and air/fuel
no computer thats what i think safc is but i am not sure thats why i asked
do you want to confirm
Old 03-10-05, 04:39 PM
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i just looked up the apexi fuel comp.
s-afc-ll is this a good one and how hard is it to install
Old 03-10-05, 04:39 PM
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329.00 is that a good price
Old 03-10-05, 04:46 PM
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$329 is cheaper than a rebuilt motor
Old 03-10-05, 04:48 PM
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lol
aint that true
so its that much of a difference
Old 03-10-05, 05:07 PM
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IMO to kind of answer your question, it's time for a standalone or piggyback (like the S-AFC) computer, so I think you are on the right track. Don't take this as gospel but I personally wouldn't feel safe with anything more than an exhaust, running an FCD. You have a ported motor, custom turbo, etc.. to me pushing the limits. Others with more experience may disagree but I would say... a piggyback at least.
Old 03-10-05, 10:16 PM
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Originally Posted by Cosmo_TT
what would be a safe but healthy psi to run at?
4psi
Old 03-10-05, 11:57 PM
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only 4 damn i used to run 9 with just intake and exhaust why so little
Old 03-10-05, 11:59 PM
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i just looked into a few more things so before i put her on the road i am going to get
safc, fuel pump, injectors, and ignition w/ wires
then maybe i can safely run 10 or 12psi
Old 03-11-05, 01:00 AM
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would that be ok do you think
Old 03-11-05, 02:31 AM
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yea sure
Old 03-11-05, 02:40 AM
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Originally Posted by bigturbo
A boost controller does control the wastegate however it can only make more boost over what you have now it cant lower boost levels.
Why does this need to be repeated weekly?
Old 03-11-05, 05:47 AM
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i was just looking to boost at a decent level without any real danger


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