Many people dont realize that their 5th and 6th ports dont work!!

Here's how to check:
http://www.aaroncake.net/RX-7/6porttest.htm

MY VERSION:

put a zip tie or a twist tie snugly around the actuator shaft. Push it all the way to the base. Now, plunge the shaft down into the actuator, pushing the zip tie up the shaft.

Make sure that after you release the shaft the zip tie stays at the highest point of the travel, not sliding back down.

Now push the zip/twist tie back to the base. Go drive your car really hard (redlining it a few times at least).

Open the hood, look and see if the zip ties have moved at all, if not, then your 5/6th ports DONT WORK!!

>Proceed onto the fixing stage of the other page (BTW, ididnt use new gaskets, probably should have tho)

 

Couldn't you clean up that area a little bit and have someone watch the acutuators as you rev? I've always done it that way

 

Yeah but the controversy is that there may not be enough back pressure cause the car isnt hauling anything

I dont know i suppose it would work just fine either way!!!

 

Can someone post a pic of the actuator shaft? I'm not sure where it is...

 

I went through all that with my GXL. A rod broke, I had to disassemble the entire intake and before I knew it I had $90 in gaskets and parts. The car revved a lot better after that though. Also, on the FC the actuator shaft moves in the opposite direction when its opening; that is the shaft will move down not up.

 

Hey superslinc - why does your post count only say 760, but you've got a custom Status name that says "1500 posts, knows nothing" ???!!!

it's been bothering me for the last couple days... did you somehow lose your post stats?

 

I'm working on this job right now....been slow about it but I'm doing a lot of engine cleaning while I've got the intake off...I post before and after pictures and results when I'm all done.

Right on.

 

Quite a few people did. The server was undergoing upgrade and deletions of older threads. It effected a lot of peoples post count.

-Error

 

89-91s open the opposite direction. 86-88s open the same as the GSLSEs

 

If this is working, something is likely wrong with your exhaust system. The car shouldn't generate enough backpressure at 4000 rpm (or there abouts) when it isn't under any load. That's why you kinda need to drive it around, so the engine is under load and thus is pumping out the exhaust.

 

I had a very unique problem with my GSL-SE that I have never seen before. The car always felt good but it seemed to lack the get up and go that it should have had and I could never post the time slips that Mazda claimed the car could do.

When I pulled the engine apart to port it I immediately saw why the car wasn't as fast as it should have been. There was a factory error on the assembly. Somehow either a J-spec or Euro spec rotor housing got mixed in with our housings on the assembly line. One exhaust port was physically larger than the other one. I mean noticably different. This explains why it didn't repond very well to performance mods. I bought the car a year ago from the original owner (friend of the family) and they said it had never had any engine work done to it. The car was immaculate and garage kept so it was a real jewel of a find. Oh yeah I got it for $300!!!

 

Shafts can move but the sleeves in side might not. A vacuum test is the best way to tell for sure if they work or not. I found that the six ports were not working on my 2nd gen, nothing a good lube and working the piston could not fix. I think the sleeves are stuck on my GSL -SE though. Pistons move but barly and not at a full range of motion, I am going to pull the sleeves out and clean them, maybe even replace them with the PineAplle sleeves.

 

Right now i have the air pump hooked up to the acutators which of course generates enough air...But even when i didn't i took it to an rx7 shop and they did it the same way as i described and it worked so i don't think putting a load makes much of a difference...atleast in my case

 

Very odd indeed, according to my FSM (and my personal experience) this should not work, but since you're running off the airpump now, it doesn't matter either way.

If anyone is really wondering about this, do a search in the second gen forum. There are an insance number of threads on this subject. And get an FSM!

 

There are a few posts, thats where i got this in the first place, but this worked best for me, and only took about an hour to do both.

 

You can also try putting a dab of grease on the shafts and then go drive around. If the grease is smeared to whole length of the shaft, they're working.

Just make sure you clean the grease off afterwords so it doesnt attract dirt.

Or you could pull your hood off and have a friend ride around sitting on top of the engine.

As for whether the car has to be under load to see the 6Ps move, I talked to a dude at mazdatrix a while back and he said the car needs to be under load.

I've had a bunch of 7s with 6P motors, and I've noticed that if you really rev the motor, you'll just see them start to move at like 65 or 7K. But under load, they opened at the right RPM. If yours are opening at the right RPM with no load, I'd check out your exhaust...

 

I tried the grease thing but couldnt see **** in the engien bay, specially on the front one, cause of the air pump.

 

hey, I am getting a BRAND NEW gsl-se intake manifold from my school.

The 5+6 ports work flawlessly and it look perfect.

it missing injectors becaust thats all I need from it. Any one interested n buying it.

 

Damn, double post.

 

How much?