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Old 07-24-05, 08:37 PM
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Slow RX-7

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Need some advice and help

Right now I can get a pretty good deal on a single turbo kit. What would be the problems with me buying the kit and installing it, and only run like 7-10 lbs.? I know I have an automatic tranny, but that much power can't hurt it that bad would it? I will do the swap sometime later, but as of now since I can get a good deal on the kit what would be the problems with doing that? Would I need to even need to upgrade the fuel system much at only say 7 lbs.? I have a fuel pump. Just give me some ideas and advice on what you think, I know some people aren't going to think it is a smart idea but right now I am thinking why not?
Old 07-24-05, 09:10 PM
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Originally Posted by rotorsownyou7
Right now I can get a pretty good deal on a single turbo kit. What would be the problems with me buying the kit and installing it, and only run like 7-10 lbs.? I know I have an automatic tranny, but that much power can't hurt it that bad would it? I will do the swap sometime later, but as of now since I can get a good deal on the kit what would be the problems with doing that? Would I need to even need to upgrade the fuel system much at only say 7 lbs.? I have a fuel pump. Just give me some ideas and advice on what you think, I know some people aren't going to think it is a smart idea but right now I am thinking why not?
I guess it depends on how good the deal is and how badly you want this particular kit. What kit is it?
Old 07-24-05, 09:14 PM
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I brake boost

 
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I don't know anything about auto trannies but if you get a soft enough spring on the wastegate to run 6-7psi, you'd be fine with stock fuel system as long as you still get it tuned.
Old 07-24-05, 09:16 PM
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Slow RX-7

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Pretty damn good deal. Here is the probem I would think, it is a T-78. So I am guessing this kit will probably suck at 7 lbs. with slow spool and not much boost. But it would be on an auto so it should be faster than my stock twins anyway correct? And with the deal I am getting I prbably won't be getting this good of a deal again. Oh, and ho wmany people have singled the auto tranny? Sounds like a good experiment
Old 07-24-05, 09:18 PM
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It won't be any faster than twins on the stock fuel system....in fact, it will be slower. I can't imagine how bad the lag would be on a 4-speed auto....
Old 07-24-05, 09:34 PM
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Slow RX-7

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Originally Posted by rynberg
It won't be any faster than twins on the stock fuel system....in fact, it will be slower. I can't imagine how bad the lag would be on a 4-speed auto....
Well, I might upgrade it just to see what it would do on the auto. The real question is why should I not get this kit and install it? I expect it be be slow and spool time to suck *****, but hell if I can get it cheap and noone has done anything like this it wouldn't hurt to experiment would it? So does anyone actually have a reason that this wouldn't be ok to experiment with?
Old 07-24-05, 09:48 PM
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So, you know it's not going to be faster than the twins, it will be a lot less fun on the street -- poor spool, and will cost a significant chunk of change to buy AND INSTALL.

So, pretty much all cons, no pros. Gee, sounds good, where do I sign up?
Old 07-24-05, 09:49 PM
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You'll need a programmable computer to tune the car. 7 PSI of a single turbo doesn't necessarily flow the same CFM as 7 PSI of the stock twins. If you don't have or aren't planning to get a programmable ECU yet, there is your reason not to install it.
Old 07-24-05, 09:50 PM
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Originally Posted by rynberg
So, you know it's not going to be faster than the twins, it will be a lot less fun on the street -- poor spool, and will cost a significant chunk of change to buy AND INSTALL.

So, pretty much all cons, no pros. Gee, sounds good, where do I sign up?
Are you forgetting its only TEMPORARY? My opinion, if your getting such a great deal on it, buy it but don't install it until you got everything needed.
Old 07-24-05, 11:16 PM
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Originally Posted by Mahjik
You'll need a programmable computer to tune the car. 7 PSI of a single turbo doesn't necessarily flow the same CFM as 7 PSI of the stock twins. If you don't have or aren't planning to get a programmable ECU yet, there is your reason not to install it.
By the looks on his sig, he has a PFC. Damn, I didn't realize it was a T-78 turbo. It will deffinetly won't be as fun as the stock twins if you're still sequential, specially at 7 psi.
Old 07-25-05, 05:14 PM
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Slow RX-7

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Originally Posted by Mahjik
You'll need a programmable computer to tune the car. 7 PSI of a single turbo doesn't necessarily flow the same CFM as 7 PSI of the stock twins. If you don't have or aren't planning to get a programmable ECU yet, there is your reason not to install it.
Power FC. I am looking to get this for more later on, but I do not want to have to do a lot as of now, like the auto to 5 speed swap. But I think it would be fun to test the auto tranny. I don't think anyone has ever done this that I have read. I might be able to run more than 7 PSI, I will do some fuel upgrades later, 7 PSI for now, then 10, then 12., then it is up to the auto to keep up, which I doubt will happen for long, but why not see what it can do ya know?
Old 07-25-05, 05:16 PM
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Slow RX-7

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Originally Posted by rynberg
So, you know it's not going to be faster than the twins, it will be a lot less fun on the street -- poor spool, and will cost a significant chunk of change to buy AND INSTALL.

So, pretty much all cons, no pros. Gee, sounds good, where do I sign up?

Where are all the cons? Cheap turbo kit, great condition, T-78 RX-7, able to be a fast car, will be running more boost in the future.

Cons are that it is an auto, will spool slow at 7 PSI.

So what was your reason it would be so bad? I might can go straight to 10 PSI, not sure that I will have to run 7.
Old 07-25-05, 05:32 PM
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Originally Posted by rotorsownyou7
Power FC. I am looking to get this for more later on, but I do not want to have to do a lot as of now, like the auto to 5 speed swap. But I think it would be fun to test the auto tranny. I don't think anyone has ever done this that I have read. I might be able to run more than 7 PSI, I will do some fuel upgrades later, 7 PSI for now, then 10, then 12., then it is up to the auto to keep up, which I doubt will happen for long, but why not see what it can do ya know?
As long as you TUNE the PFC, then it will be fine. However, running the base map with the single turbo is NOT a good idea.

As far as the auto + single turbo, sorry, you won't be the first to run a single turbo with an auto. It has been done. Most people just opt for the tranny swap these days.
Old 07-25-05, 05:35 PM
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What's the point? It sounds like a lot of friggin' work for NO benefit. If it's such a good deal, buy the T-78 and shove it in the closet until you have a PFC.
Old 07-25-05, 06:12 PM
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If you are sure that you are getting a great deal on the t78, buy it. dont install it till you do a transmission swap.You could always sell it down the road for more $$if you change your mind.
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