Single Turbo RX-7's Questions about all aspects of single turbo setups.

S4 bridgeport turbo for beginners

Old Mar 16, 2014 | 11:15 PM
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S4 bridgeport turbo for beginners

So I bought myself a 87t2 a year ago. I bought a s4 13b engine in Ohio and shipped it out to NY to get a bridgeport done. Now it's at my house looking amazing. I thought I could run stock everything on my engine but I'm starting to learn otherwise.?
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Old Mar 17, 2014 | 01:49 AM
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Originally Posted by Jordan Rx Hanau
So I bought myself a 87t2 a year ago. I bought a s4 13b engine in Ohio and shipped it out to NY to get a bridgeport done. Now it's at my house looking amazing. I thought I could run stock everything on my engine but I'm starting to learn otherwise.?
Why the question mark? You never asked a question or explained what the thread was started for
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Old Mar 17, 2014 | 12:00 PM
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I plan on using my stock single turbo but I'm not Sure if it's going to handle the bridgeport. I've heard people say that it will and it wouldn't for long. Can I use the stock injectors,ecu turbo system etc and have a reliable setup.. or would there be recommended upgrades you would susuggest So I can have a reliable say 300hp engine.
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Old Mar 17, 2014 | 01:54 PM
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None of this was discussed with the engine builder? Just curious how a engine builder (please do not name who) would let you build a BP engine and not know your HP goal was 300hp...


~S~
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Old Mar 17, 2014 | 05:37 PM
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PA no good

[QUOTE=Jordan Rx Hanau;11700141]So I bought myself a 87t2 a year ago. I bought a s4 13b engine in Ohio and shipped it out to NY to get a bridgeport done. Now it's at my house looking amazing. I thought I could run stock everything on my engine but I'm starting to learn otherwise.?[/QUOTE

Why building a motor with a bridgeport if your goal is 300hp and on top of that using stock everything else?
..........i am sorry but you did not research anything before you got the motor build.
You need a...
Standalone
Big turbo
Nice manifold
big wastegate
injectors
FPR
intercooler
loud exhaust system
and a lot more 2 see some gains out of that bridgeport.
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Old Mar 17, 2014 | 06:08 PM
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Originally Posted by Jordan Rx Hanau
I plan on using my stock single turbo but I'm not Sure if it's going to handle the bridgeport. I've heard people say that it will and it wouldn't for long. Can I use the stock injectors,ecu turbo system etc and have a reliable setup.. or would there be recommended upgrades you would susuggest So I can have a reliable say 300hp engine.
Stock turbo is fine.... If you were going to run 2 of them.
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Old Mar 18, 2014 | 08:06 AM
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I'd say you need about another 5 grand minimum
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Old Mar 18, 2014 | 09:48 AM
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this is probably not going to end well...
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Old Mar 18, 2014 | 11:52 AM
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If you're on a budget, get an rtek 2.1 and the appropriate injectors. It will run but you probably won't be happy with it.
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Old Mar 18, 2014 | 10:35 PM
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Okay. Well I have some parts coming in this Thursday. Just block off plates for emissions and secondary diffusers. I have to put my turbo manifold on and then I'm hoping I can run stock everything besides clutch and exhaust. I'm completely new to building cars. I know I can make power out of a Bridgeport but I just want to have things run and be steady while it's in there. I'll save money for the future but just need some more recommendations.
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Old Mar 18, 2014 | 10:41 PM
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I agree with the standalone and some more fuel. I'll be taking to the builder soon so I'll have a lot better understanding on what I'm doing
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Old Mar 19, 2014 | 01:54 AM
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Originally Posted by Jordan Rx Hanau
I agree with the standalone and some more fuel. I'll be taking to the builder soon so I'll have a lot better understanding on what I'm doing
Rotaries are different than a lot of cars, like Hondas or mustangs or camaros, you can put intake and exhaust on a car to gain some power not really needing to tune unless you want it perfect, well with a rotary, an exhaust or a port could blow your motor trying to drive it without tuning for it
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Old Mar 19, 2014 | 11:32 AM
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You could put it together stock but replace the turbo/manifold with a header for an NA RX-7.

The engine you had built should make more power NA than the stock turbo can move air, so putting that on would be a bottleneck.

The good news is stock ECU is airflow meter and big injectors so it can handle a moderate NA bridgeport well.

You will have bad driveability issues due to the bridgeport wanting different timing and fueling for cold start, idle and throttle pump enrichment, etc on the stock ECU.

You could put in an R-tek 2.1 and get it tuned in so it just has the normal bridgeport driveability issues.

Then you can safely learn to tune a rotary (hard to hurt an NA rotary) and decide if you want to keep saving for a big turbo set up for your bridgeport.

Or.... you could get a stock rebuilt engine and put it back together stock.
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Old Mar 25, 2014 | 10:49 AM
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I do not have any experience with a bridgeport turbo. but I guess you try to run stock turbo and port the turbine housing to direct more flow to the wastegate and port the wastegate. this is the only way you make any chance of not running into boostcreep.

if you can manage to avoid boostcreep and run stock actuator spring pressure I think you should be in a relatively driveable and safe situation. first thing to do is get a wideband and make sure it doesnt run leaner than 11.5:1 at wot. if it does, stop driving it or you will crack the rear plate or worse break a seal and byebye engine

then start saving for decent ecu, fuel system etc etc etc.
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Old Mar 31, 2014 | 06:36 PM
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Do as blue said. My current build was going to be a half Bridgeport. I wasn't worried about the turbo because I could run it n/a and save for a good turbo. Do your research.

Haltech e6x can be obtained for $500 if you look hard enough.

Wideband 02-- $180 and can be used to datalog

Injectors-- 2-300

Racing beat headers --- $150

Walbro fuel pump--- $80
Enough for n/a bridge. Correct me if I'm wrong.

Tune. The haltech will datalog with a wideband.

Then save up for intercooler, manifold, turbo, clutch, down pipe, whatever other goodies you want and proper tune.
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Old Mar 31, 2014 | 06:37 PM
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Can still run t2 intake manifolds as well with n/a Bridgeport setup.
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Old Mar 31, 2014 | 06:39 PM
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Bad idea running stock turbo. The waste gate must be ported and stock turbo maxes at 12psi. Bad tuning with boost will toast the motor. Engine will outflow hybrid turbos.
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Old Mar 31, 2014 | 06:59 PM
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it's quite the opposite, the large overlap will cause the turbo boost levels to drop like a rock at higher RPMs and no amount of wastegate override will bring it back. a larger turbo or a much more efficient intercooler will help with that to a degree.

basically a stage 3, higher or complete T4 turbo assembly or higher and an intercooler at least twice the size of the stock TMIC.

Last edited by RotaryEvolution; Mar 31, 2014 at 07:03 PM.
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