What are these?
 

I ordered a set of manifolds and fuel rails, and these were included. I admit im no pro but i was able to tell what everythign else was except these. Are the 6 port sleeves? thats the only thing i can think of.

Yep, 6 port sleeve insurts. Leave those out! Did you make your own brackets to mount the 5 spd in the auto tranny car?? I just did that job to a friends car and had to fabricate the mountings.

Where did you order the gasket that they sent those God awful things?

What the hell are you talking about? LEAVE THEM IN. They were put there for a reason... oh yeah... to give you low end torque. When you take them out, that advantage goes away.

dont leave those out. thats not a cool idea. the aux port system is a good system with a real function. just put it together the way its supposed to be.

pat

It was a few years ago but im pretty sure it mounted right up, i wasnt there the whole time though, at the time the car belonged to a friend of mine and i helped the first day but not the second so maybe i missed something, i only rememebr putting the master and slave, installign the pedal assembly, and removing the auto comp.

As for the sleeves, im glad i was right, im not going to install them and I bought the parts from rotary ressurection. I bought the entire set of s5 manifolds and fuel rails for a good price and these were in the box as well. Ill just sell them. thanks again.

I thought they locked your 6 ports open all the time and took away from low end torque??????

^^ not a good choice, but hey, its your car. you will lose like 25% of low end power.

well, if you take them out, thats the same as being open all the time, only slightly worse for airflow.

I drove my car around the first time I rebuilt an engine, and left the whole thing stock.

The second car I did, I took them out. You have to be the type of person to drive your RX like an RX to take them out. I just figured that everyone here was the redline type. You gain quite a bit more pull up at top end with them out. Who the hell needs low end, the redline is 8K. Timmy

Ok i se whats going on here, i thouhgt that these were the pineapple sleeve not realizing that there are a stock version already in the car. I could have sworn that you only put sleeves in if you want them open all the time, guess i was absolutely wrong.

they are closed at rpm below 3800k for faster airflow in the intake stroke, but in the top end they hinder the amount of air the rotor can suck in at any moment, by being an obstruction.

Where the hell do you get saying that is a good idea?

You don't gain any top end by removing the 6port-sleeves, you ONLY lose low end. Period. If you thought you had gained high end when you removed the 6ports, its obviously because they weren't working prior to your removal (they were stuck closed).


EDIT: on a blown 6port engine (not 4port) this is a COMPLETELY different situation. But I'm just guessing you don't have a blown 6port, just a 6port that doesn't have any low end because you remvoed the 6port sleeves

Radial Gt has some good points.
When pulled they do not effect low end that I much I dont really know sense I never keep my rx7 below 4000 anyway. But they take up some relastate in the port its self so they do flow better and its enough to tell a difference..
Plus they never open all the way when they are left in and so they are very ristrictive.

Do you realise how stupid you'd look driving around the suburbs or in traffic at 8000rpm. :rolleyes:

BS. This comment makes you sound like a teenager who's never actually driven a car.

You have no idea what you're talking about, so you should probably stop talking now. Thank you.

removing them WILL hurt you in the top end too, someone just dynoed their car with and without the ports. 118 was without and 136 was with them. heres the thread but the carts are gone now. https://www.rx7club.com/time-slips-dyno-128/87-rx-7-base-line-project-300544/

like i said, even if you have them open all the time, youre better off with sleeves still in. taking them out changes the port shape and causes a lot of turbulence, making for bad airflow.

pat

Thank god, somebody that admits when they didn't know something but learned something from people posting trying to help them. Sir, I salute you :).

You can look up a test to see if the aux. ports are opening correctly.

LOL

So let me understand this. I can get the pineapple inserts and install them but still have operational 6 ports?

I think that you need to re-read the thread. The dyno charts show 118 hp with the ports forced *closed* and 136 with them wired *open*. We see the lose of power and torque below around 4800 when the ports are wired open, but the peak torque is now higher in the power band and overall power is higher (as it shoudl be). Theoretically, "normal" operation is the best of both worlds.

Nowhere do I see a chart for any power differences with the ports removed versus wired open - that data I would be very interested in seeing.

-bill
'94 FD
'90 FC

of course.. having the sleeves actually opperational will give the best power-- better than wired closed or open. I don't know if thats what you were trying to say... but anyhow

Go to the Pineapple website and actually look at what they are. Then you will understand.

I did and if these are already in the engine it seems that they shouldnt do anything to keep them from moving. They also seem overpriced for 2 small pieces of shaped aluminum. But i was always under the impression that these inserts were only use don inoperational 6 ports. Im gonna look into it.

They have absolutely nothing to do with the operation of the ports, and I don't know how you got the impression they did. You can see from the photos that they sit completely inside the sleeve, and smooth the flow of air as it turns into the chamber. This has exacly the same effect whether the ports are operational or fixed open.

Whether they're actually worth the money is hard to say. In theory there will definitly be a gain, but it's hard to estimate how much. Even Pineapple offer nothing in the way of evidence of how much gain you'll see, and I've never seem anyone do any independant back-to-back dyno testing.

since you've got extras, you may as well send them to pineapple and have them install them for you at no extra charge. that is, if you want to get that done.

one thing interesting is that in cars with the sleelves in which are using an SAFC, the AFL% reading, basically the air volume reading from the afm/temp sensors (i think) is higher with pineapple sleeves in (at least as far as we have noticed having put the sleeves into 2 cars with SAFC's so far) than it is with the original unmodified sleeves.