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-   -   size question (https://www.homemadeturbo.com/forced-induction-7/size-question-90379/)

keelay 03-24-2008 05:48 PM

size question
 
i have mixed opinions on this. i have a .48 ford used t3. you think its enough to supply 2.5L up to 6250rpm's?

if so i am about to be boosted really quickly. albeit only 3-4 psi for a month or so, until i get the money for injectors and a tune.

seerex 03-24-2008 06:05 PM

Re: size question
 

Originally Posted by keelay
i have mixed opinions on this. i have a .48 ford used t3. you think its enough to supply 2.5L up to 6250rpm's?

if so i am about to be boosted really quickly. albeit only 3-4 psi for a month or so, until i get the money for injectors and a tune.

To small for that motor, als it is a big No NO to ever boost a car with out a tune.

keelay 03-24-2008 06:18 PM

Re: size question
 
i am basically copying big j's spec v build.. it will handle up to 4 psi on the stock tune @ 12:1 afr's. his was not a fluke, there are a couple others that have duplicated it.
the main reason i am in a hurry to just get it on there, is to get these shitty, exploding cat convertors off of this car, before it eats one. this is my 3rd spec v and the first on ate the cat before i got it home to alabama from pennsylvania. the second ate it about a month after i got it. i am being very ------- cautious with this one. plus 4psi is good for 13's, not bad for a couple hundred bucks.
i guess i need to go to the classifieds and find a t3/t4..........

CspecRun 03-24-2008 07:00 PM

Re: size question
 
Nah, that T3 won't be anywhere near big enough....I had a .63/.60 T3 that I had originally planned to use on my car, but was advised to go bigger(by J)...I do think that turbo would be fun on the QR25 because it would spool up hella quick, and its good for right at 300hp, so I guess it all depends on what kinda power you are looking to make...My t3/t4 .50 trim has my wastegate open before 3k rpms, it has the 7.25psi spring, and I'm seeing 6-6.5 on my gauge...

keelay 03-24-2008 09:52 PM

Re: size question
 
i am hoping to run an occasional 12psi in the end. just enough for 12's. but i guess i now have a t3 that i dont need, anyone want it?

nikolass 03-24-2008 09:56 PM

Re: size question
 
how much you want for it

xternal 03-25-2008 02:14 AM

Re: size question
 

Originally Posted by keelay
i have mixed opinions on this. i have a .48 ford used t3. you think its enough to supply 2.5L up to 6250rpm's?

if so i am about to be boosted really quickly. albeit only 3-4 psi for a month or so, until i get the money for injectors and a tune.

Hope you have a spare motor somewhere if you want 12's and running it for that long with no tune.

CspecRun 03-25-2008 06:24 PM

Re: size question
 
You're gonna catch hell getting 12's out of these cars. Be prepared to spend some $$$. The power isn't hard to make, but traction is hard to come by. Be careful boosting the car with stock injectors(it's doable, just be careful) and keep out of boost until you can get a tune. Your just gonna need something to control your injectors duty cycle(apexi AFC is the most common and simple solution AT THIS TIME) and wideband O2 sensor and reader.

keelay 03-25-2008 07:18 PM

Re: size question
 

Originally Posted by xternal
Hope you have a spare motor somewhere if you want 12's and running it for that long with no tune.

oh no, 12's as an end result, when its completely done. it wont see over 4psi w/o a tune, max.

Originally Posted by CspecRun
You're gonna catch hell getting 12's out of these cars. Be prepared to spend some $$$. The power isn't hard to make, but traction is hard to come by. Be careful boosting the car with stock injectors(it's doable, just be careful) and keep out of boost until you can get a tune. Your just gonna need something to control your injectors duty cycle(apexi AFC is the most common and simple solution AT THIS TIME) and wideband O2 sensor and reader.

i have been through the safc. i will run another one. i have a set of srt4 injectors now, just gotta plumb up a return and pressure regulator. still need a wideband

Originally Posted by nikolass
how much you want for it

i might have it sold locally tonight. if not $100 plus shipping. it is a stock auto t/c t3. internal wastegate, blah blah im sure you know

CspecRun 03-25-2008 10:28 PM

Re: size question
 

Originally Posted by keelay
i have a set of srt4 injectors now, just gotta plumb up a return and pressure regulator.

I use those on my car, you'll need a set of 2000+ Ford or Chrysler injector clips, you'll have to wire them up but other than that they fit without any modification...I'm still running returnless and haven't had any problems. For more boost you'd definitely need to, but I've heard of people having problems with return fuel systems...


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