In other words,.. do they allow identical boost flow regardless in which way they are installed in the hose ??(Wastegate & Pre-Control).

I've searched and read many threads on B-Pills, but never found the answer to my question. It would seem logical that it shouldn't matter which way they go into the hose, BUT....??

 

it's just a pill that's drilled the same from both sides. So why should it matter which way you turn it? I also heard that pre-control pill is smaller than wastegate, but found out that that's not true. They are both identical.

However, I got one of the smaller pills from a buddy of mine with 300zx and i put that one in the pre-controller. It makes a difference now.

Amel

 

Hey Amel. Howudoen!!

I guess it's restricting flow to the P-Control actuator, thus dumping more boost to the primary side.

 

yeah could be. However i'm still far away from actually making my turbos work again Hopefully i'll start this thursday. You wouldn't happen to have a turbo cartridge in good condition? I only need one

Amel

 

Wish I did. I'd let you have it. I'll be selling my rebuilt set as soon as I pull them off. Assuming the "new" set works as good as the rebuilt set

Whats wrong with your Turbo?

 

I guess you didn't get my last PM, I wrote a lot, and forum has been messing with me recently.

They are leaking oil AGAIN!!! I can see a lot of oil in the piping and as i redline it blue smoke comes at around 7k rpm. Plus now I can't go past 9psi no matter what I do.

I bought recently just 2nd turbo with under 50k. Looks good no play and all that. So i need one more to make it work

I guess i'll ship one to turbo city for them to fix it or something, since i'm using their rebuild kit in it. It worked fine for like 2-3 weeks and then smoke again I wish I just purchased a used set with low milage like you did and not spend over 500 bucks on this crap that has to come off anyway.

Amel

 

Hang in there and be patient. Sooner or later someone will sell a good set. You probably have a leak somewhere for you not to be able to boost past 9.

Which turbo is giving you trouble? Primary or Secondary?

 

they're not identical. i dont remember the sizes, but when i had to buy some for my car (i used NOS systems nitrous jets) i used #59 and #61. i searched for it and found it way back then, look around you should be able to find a thread by me about it somewhere.

 

I agree. They are NOT identical. One is in fact smaller than the other. It has been over two years since I adjusted my pills, but I do remember that they are not identical.

As for the direction of the pill. The answer is YES it does usually matter which direction the pill goes. If you are using something like a holley jet then they are typically used for flow "restriction" or regulation. Some of the jets have different shape entrances to allow different flow rates. However, I can't honestly say that it will make much of a difference in this case since you are not trying to fine tune a fuel flow, but rather you are trying to restrict air flow to the turbos. I think when I did mine I had the side where the threads facing towards the actuators. This made it easier to push into the hose with a small socket.

I have found that each car ends up using different number jets depending on the persons modifications and condition of the car. I would suggest buying the holley jet kit and a bunch of hose and just adjust the jets until you get the 10-8-10 pattern on your boost gauge.

You can find out a whole lot more info here:

http://www.scuderiaciriani.com/rx7/turbos.html#PIL

Incase you want to know the "stock" pills are:

Pre-control (longer hose) .059"
Wastegate (shorter hose) .064"

Notice the hole sizes (pills) are not the same.

- Cody

 

The smaller pill ( hole size ) goes in the longer line, the bigger pill ( hole size ) goes in the shorter line . Easy to remember .

 

yep,
I agree on that too.
the pills are not Identical. When I did my vac job I remember, the smaller pill goes to the pre. and the bigger pill goes to the waste...

 

Thanks Guys. I'll do some experimenting this week-end. Hope to create a Monster!!

 

Mine were NOT identical. I took a long, thin, tapered rod and found each inserted in the hole to a different depth. The difference isn't much, but you don't want them switched.

As for direction, the hole needs to be aligned with the tube, but which end faces the actuator doesn't matter since they're symmetrical.

 

Thanks. That's what I thought.