2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Do I need bigger injectors for 12psi on the stock turbo?

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Old Jan 7, 2003 | 01:38 PM
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Question Do I need bigger injectors for 12psi on the stock turbo?

just like the topic says, 12 is the highest i wanna run, it should be okay for the stock turbo right? Would I be pushing the limits of the stock injectors?
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Old Jan 7, 2003 | 01:44 PM
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Yes you will be pushing the stock limits of the injectors. I wouldn't do it, but its been done. If your injectors/pump aren't up to par you could have problems. Also, if you creep past on a cold night you could detonate.
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Old Jan 7, 2003 | 01:52 PM
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how much boost are you running?
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Old Jan 7, 2003 | 01:59 PM
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Originally posted by BlackRx7
how much boost are you running?
None at the moment. I blew my turbo Was running up to 13.5psi though.
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Old Jan 7, 2003 | 02:08 PM
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damn that sux
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Old Jan 7, 2003 | 02:08 PM
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I'd suggest a Walbro pump and 720cc (or more) secondaries
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Old Jan 7, 2003 | 02:55 PM
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new rrfpr will help. Check Aeromotive.
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Old Jan 7, 2003 | 03:09 PM
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I will have to get a custom setup right?
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Old Jan 7, 2003 | 03:23 PM
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rrfpr is custom. Go get yourself some gslse injectors cheap from a junk yard and send them out for cleaning
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Old Jan 7, 2003 | 03:25 PM
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How many cc's are the gslse injectors? I have been told 620cc and 720cc......anyone know?
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Old Jan 7, 2003 | 03:28 PM
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there rated at 680cc but I think they flow more...
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Old Jan 7, 2003 | 05:07 PM
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How about the turbo, is it going to be reliable at 12 psi, I'm not planning on runnig it that high all the time, only at the track...
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Old Jan 7, 2003 | 06:01 PM
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Originally posted by BlackRx7
How about the turbo, is it going to be reliable at 12 psi, I'm not planning on runnig it that high all the time, only at the track...
Depends really. How many miles are on the turbo? My stock one took a **** right after I turned the boost up. BUT I think mine was going anyways.
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Old Jan 7, 2003 | 09:13 PM
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Hey guys just found this forum hahaha
I am in the u.k. and our beloved rxsevens are rare, as for the junk yards - ha ha ha
If you know of anywhere that would be able to supply me with 680cc injectors (and ship to u.k.) I would be exstatic.
My rx kinda dont like it over 12psi with stock ones.

does this also mean I need an FD fuel pump and if so is it a straight swop.
cheers
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Old Jan 7, 2003 | 09:25 PM
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better to get a walbro 255lph here are some links

http://www.rotaryresurrection.com/
they have 680 cc for $100

http://www.groupbuycenter.com/buy.aspx?id=8133

the pump is also $99 with free shipping
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Old Jan 7, 2003 | 09:26 PM
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Originally posted by jeyjey
If you know of anywhere that would be able to supply me with 680cc injectors (and ship to u.k.) I would be exstatic.
My rx kinda dont like it over 12psi with stock ones.

does this also mean I need an FD fuel pump and if so is it a straight swop.
cheers
Make a post in the for sale/wanted section in here, check www.thepartstrader.com, check www.teamfc3s.org/forum, and make a post in the 1st gen section because thats where the injectors come from.

As for the pump, I'd go with a walbro one. They are a direct replacement and flow well.
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Old Jan 7, 2003 | 09:30 PM
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thanks guys
you have loads in u.s.a
there are less than 150 TIIs on road in u.k.
parts are scarce
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Old Jan 7, 2003 | 09:55 PM
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Originally posted by BlackRx7
http://www.groupbuycenter.com/buy.aspx?id=8133

the pump is also $99 with free shipping
They might not want to give him free international shipping

Last edited by Ryde _Or_Die; Jan 7, 2003 at 09:57 PM.
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Old Jan 7, 2003 | 10:10 PM
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I have e-mailed them to ask we will see
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Old Jan 7, 2003 | 10:22 PM
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Before I ported my wastegate with just the dp/mp and cone filter I would creep to .9bar in fourth...and stayed on it a couple of times. In hindsight that was very dumb, but EGT got to just over 800 degrees. That's cutting it very, very close. Then again .9 bar is about...13 pounds. I think anything UP to 12 is ok...but after that boost at your own risk with just the walbro.
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Old Jan 7, 2003 | 10:25 PM
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Hey Ryde or Dye can you still drive your car? have you seen the BNR stage 1 only 575 with core?
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Old Jan 7, 2003 | 10:40 PM
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Originally posted by BlackRx7
Hey Ryde or Dye can you still drive your car? have you seen the BNR stage 1 only 575 with core?
I can still drive my car but right now my damn 4 banger Ranger is faster Ya I saw the stage 1 but for $700 I can get the stage 3. And I might even save up more to get the stage 4
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Old Jan 8, 2003 | 12:47 AM
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How does the Majestic to4e - 46 trim with turbine clipped 8 degress compare to the BNR upgrades?
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