Too give you a little background no one ever taught me jack **** about cars or how to work on them, everything I know so far I've learned from reading manuals and information on the internet. No one has ever pointed out what is what for me so forgive me for my lack of knowledge. I also work on black hawk helicopters so I try to use the same way of learning through the use of manuals, but rx7 manuals ******* suck *******. Now that I look like an idiot here is my problem.

1. I have a '88 N/A that I believe the engine blew. I was driving like a regular Joe making a left turn when I all of a sudden lost power. I was trying to make it to the closest gas station that was open after I stayed late at work and barley made it to one. Assuming that my issue was that I ran out of gas I coasted in and began pumping. When I finished and turned the car back on I had the same lack of power and off beat exhaust popping, and it wanting to stall. So now I figure I sucked up some sediment from the bottom of the tank, but a compression test showed that I had nothing to register on the rear rotor. Not a single bounce, is all lost?

2. I picked up a 86 FC with a 87 Turbo swap. The body on the 86 is mint as **** and I picked up the car for insane, insane cheap because the guy who I bought it from said the motor was blown. Only wanting the car for the body I bought it, and for fun did a compression test finding that the motor had compression. The guy had the motor pulled apart in a seriously odd way that has me so confused on what his intentions were, anyway the motor has a lot of surface rust (not the car itself, as it was a swap) and a part near the turbo obviously isn't moving like it is supposed too. Problem is using the manual it might tell me how to remove something, but it sure as **** isn't telling me what it does. I need help identifying it and figuring out what it does so I can piece this back together.

Rusted wierd *** part here:



Can you tell me what it does, if I need it and how it should be hooked up?

Once again I am sorry for being a hassle with my ridiculous questions but I seriously have zero knowledge I am trying to learn this **** on my own, and for the record this is 100x harder then working on helicopters because no one takes care of their equipment and its hard to find reliable information. Thanks in advance.

 

It looks like the twin-scroll actuator.

 

can you tell me what it does?

 

Moves a little flapper in the exhaust manifold to close off one of the turbo scrolls at low RPM. This aids in spool.

The car will start and run without it.

 

Aaron you are the man, thanks for always helping. How should I block it off for the time being? and should I get a new one? I also happen to have a DSM EVO III turbo sitting at my house, should I bother putting this in? would I need other parts to do this before I can? or can i just swap it out?

 

There's nothing to block off on the turbo itself, but the arm connected to the flapper door needs to be wired in the open position, or removed entirely. And a 4-banger turbo will not be appropriately sized for a rotary.

 

Yep, what he said. Turbo upgrades for RX-7s are full frame T4s, not some little T25 4 cylinder unit.

 

alright cool, thanks for your help.. i wish there was a break down tho somewhere of all the non internal parts that told you what they did and if you need them, and how to get rid of them or what ***** confusing the hell out of me this guy left me with a jacked up engine with **** just hanging everywhere

 

There is such information:

-FSM (FAQ)
-Haynes manual
-Training Manual (FAQ)