I am trying to install my RB header. I have the manifold off.Now I want to remove the sleeves that are in the ports. I cant't get them to budge. what do I need to do?
help quick. the car has to be a the exhaust shop in the morning so they can finish the rest of the pipe after the header.
I gues I should cearafy... I don't want to remove the sleeves i want to remove the steel "exhaust splitter" part in the sleeves. how do i do this?

thanks
j

 

Uhh, remove the engine and disassemble it.

 

Why do you wanna do this?? The headers should work just fine with them in....

 

Well obviously he wants to remove them for exhaust flow/breathability... The turbo II cars have em the N/A's dont... I removed mine when i did my rebuild with a air chisel and some ingenuity.... but... you have to grind and grind and they take forever to get out.... i dont know how good an idea it would be to do it with the engine assembled...

 

no the n/a's do have them. I have wanted them out ever since I read the tips section of the racing beat cataloge.

 

it is really only the 6 port engines and turbos that have them.

 

They all do

 

LOL

 

Is there any real gains from doing this? My engine is getting rebuilt right now and I noticed them and was wondering about it. Performance help or just make it tons louder?
Nick

 

they all do!.

turbo= no diffuser
N/A= with 2 diffusers per sleeve.

I also wants to know how to remove those sleeves to help out one of the forum members for his project.

 

No. The TIIs don't have diffusers, the NA's do. All of them have sleeves. If you pull the sleeves, the flow will be ****. Put TII sleeves in an NA if you want to be rid of the diffusers.

 

we have gotten off of the subject. I don't want to ruin the fun for every one, but my car is waiting. all have have to do is to remove the sleeves and put the header on.

 

You cant do it without takign the engine out and apart. The sleeves are pinned in from the side of the rotor housing.

 

Well, you're not gonna be able to remove the sleeves w/o taking the engine apart, so just slap those headers on before time runs out.

 

well crap!
thanks guys. now we can resume the debate of what cars had what sleeves.
I wonder why RB would say you can take them out, then make it sound like you can do it in an afternoon?
I am going back under my car then.
thanks guys.

 

Call Racing Beat and ask them

 

 

I'm doing this for the N/A that im building.

It takes about 20 mins.

You want some sort of sleeve in there, all the N/A came with a blockage in the middle of the port to quiet noise and increase low rpm torque.

The Turbo II's didn't have the blockage instead had a clean diffusers w/ nothing in the middle.

They can be taken out by drilling the pin out in the above diagram. I'm freakin' drunk right now, so post more if you have questions, but I know all there is to know about this. If you do a search I asked a question like this, and Mazdatrix themselves answered with Dyno Proof!!

Enjoy

 

oh yeah, you obviously have to take the motor apart, or spend 15 hours grinding the really hard metal out of the middle w/ the engine intact.

 

hmm that looks easy!..so do you have to remove 2 roll pins per housing??..there are 1 on each side i believe..
email me again..

 

not really true - if you pull them out without porting the exhaust ports then yes the flow will be ****, if you do a BIG exhuast porting job then you remove the sleeves and the flow is GREAT

 

I just left them in. I needed to get the hting done. I had a **** time getting the whole thing up. since the replacment cat was welded on, I had to leave the old exhast on the car. fitting the per-silecer on there with the othe pipe hugging it was not easy at all. then when I was leaving to drop off the car at the shop, I heard a grinding sound. I was dragging th old pipe. so I had to wire the thing up whith the car square on the ground, in the dark. I didn't want to start the car again becaus it was 2:00 am and every sound bounces around in my neborhood. then I drove the car, wiht nothing behinde the pre-silencer, 37min to the exhaust shop in the middle of the city that I live outside of. I had to hold my ears the whole way it was so loud. once I got in town I had to roll up the windows because the sound bouncing off of the buildings was louder than in the car. anyway I ma glad it is over but I am worried. i don't like letting other people work on my car. imagine taking your daughter into surgery. I have to trust this guy until I see the finished product.
that, and I hope i designed the system correctly. ever since I heard my first botched exhaust for the rotary, I have been worried until I heard it. I have done a few and had no problems. each a little different than the others. No bad ones yet. but I love this car the most of all the others I ahve had. she is my baby. I have never been in a car with this many origonal mile on the motor pull so hard. 151,000 and still quick.
anywayenough mushy stuff I have to go and clean up my mess, then me, then I go to bed.

thanks again

 

so what exactly are those sleeves for? do they make the diameter match up to the stock manifold's size?

 

Mazda designed them to keep heat out of the rotor housing.&nbsp The NA "insert" is to lower noise exhaust levels.


-Ted

 

but with the engine intact wouldn't you have to worry about metal shavings with grinding the fins out?