I have a 87 Turbo 2
It has a intake
Full turbo back 3" exhaust
Walbro 255 pump
and a S5 manifold

What kinda power do you think i am making around?


I just bought this car and got all the kinks out only driven it around the block but feels good..

Payed 300 for it because the previous owner couldnt figure out the cats were clogged.

Ben

 

About 6", I'd guess.

 

Oh and no P/s Or A/C if that makes a difference really?

 

Don't concern yourself with numbers. get the car running right and make the "right mods" Search and don't waste money on useless junk. The rx7 has a powerband unlike anything else and if you want to know what kind of power you are making to compare it with your buddies it won't tell you anything. You gotta race them to see if you will win. By the way My best guess would be around 200hp. give or take if it is in optimal shape but for $300 I doubt it. Put your money into making everything run like new before your get power adders. You will thank me later.

 

Well i payed 300 for a miata and then found a guy trading a rx7 everything is great car was rebuilt 7000 miles ago with 2mm apex seals.

Only things wrong i pretty much fixed the BAC was bad got a new one, had a vac leak fixed, and oil was bad and the cats were clogged

Other than that runs awesome and everything else checks out had it at whats supposed to be the best rotary guy in el paso and He said awesome car. i just got lucky with the 300 dollars for a miata and this guy trading me.

Thank you tho for the advice im not really adding anything to big until i do supporting mods.
Suspension, Cooling stuff like that.

 

well..
depends on the amount of boost you are running

but if it hasnt got any fueling mods you should be making no more then maybe 230hp otherwise you will definately blow the engine to bits..

 

26

 

the answer is "steve"

 

Be careful, a fresh rebuild has to be broken in right, and old oil at 7k isn't a good sign of being taken care of.

With all that though, you should be hitting fuel cut. So you'd need a FCD.

 

no, he would be needing bigger injectors and a piggyback/standalone..
if your engine doesnt get enough fuel because of higher boost, a fcd will kill the engine even faster..

 

Says he has an upgraded pump. So I'd assume with nothing but an intake and exhaust, an FCD would be enough.

 

If you find that you are hitting fuel cut from overboosting, all you need is a boost controller (manual bearing/spring one's are only around $15), and a boost guage to stop it from hitting fuel cut.

 

But cant you still get boost creep even with a MBC? Curious...

 

of course you can.

 

a boost controller CANNOT lower boost pressure, only raise it above what the wastegate spring is rated to open at.

 

A boost controller wont stop boost creep, only a more effecient wastegate will. And all fcd's should be burned.

 

Amen to that. Creating false pressure signals on a turbo car is just begging for trouble. Increased boost at the cost of jacked up fuel/timing! Sounds safe to me.

 

OP: for a safe setup:

Port wg.
RTEK
720cc secondaries
wideband


On your current setup, you might be putting 200 down if the motors strong.

 

Haha well thanks everyone yea I'm taking it slow fixing the little things and trying to break the engine in. I changed the oil with royal purple And since it was so bad I'm going to to it again near the middle of the month to make sure it's fresh.

I have been looking into getting a set off 750cc injectors on prime and secondary and getting the rtek 1.8 to fix the fuel cut and a electronic boost controller.

 

Save the money and don't get the boost controller. Stock turbo is only good for 12psi, and with a ported wastegate, you will be around that psi. Put that money towards a better turbo.

 

How much does a potted wg usually run?

 

i ran 14psi with stock turbo for 3 years..

 

how much i costs you mean??

well you could do it yourself, but you should only do it if you think you're up to the job. its not something you can buy

 

Is there a thread with details then I would like to do it. I don't really want to get a new turbo yet so this seems like a awesome idea waiting to get a turbo until all supporting mods are done.

 

here you aare lol http://www.aaroncake.net/RX-7/s4wastegate.htm