Stuff
 

ok, i just did the "useless fuse box relocation" on my car and to my surprise everything worked, puts a little more confidence in me to tackle some more extreme jobs.

i also just installed the banzai block off plate kit, but not the DT plate so i still have that.

so now i'm just looking under the hood of my car, which is essentially stock (with a JDM engine, no EGRV or solenoid) and i'm just looking for stuff that i can get rid of that just doesn't need to be there.

i'm looking at the pressure and vacuum chambers right now, do those actually serve a purpose? they're just empty boxes of air and will eventually lead to wherever.

also, i want to relocate my vacuum solenoids "somewhere" b/c under the UIM is just not good so i might as well do the vacuum hose job at the same time, but which solenoids can i get rid of considering i don't have the ACV? i want to keep the sequential system as well.

for a moment i thought about removing the ABS and moving that solenoids there but.....you know, no ABS.....hmmm. i'll find somewhere else to move them.

thanks for the help guys

Is this a joke?

^ if you were in front of my i'd punch you square in the mouth for being a dick

yes, it's a goddamn legitimate question

yes you needs those, your turbo and the wastegate work of pressure, that empty box of air distribute the same reading to all lines attached to it so it works together. BTW dont be to easy ticked, alot of people here are that way and you wont get any help by acting like they do either.

i understand your point and i'll try to keep my composure

ok, but i don't understand why they can't be removed still.....if you look at the flow of pressure and the direction the check valves work, it SEEMS like they can be eliminated without a negative effect to the turbo system

the vaccum chamber has 2 lines going to it; 1 in from the y-pipe (with a check valve) going to the turbo control solenoid...why not just go straight to the solenoid?

the pressure chamber has 1 line going to it; 1 from the rats nest that could be just capped off and eliminated all together.

honestly i never messed wit it, i have a single turbo now so i can't help you there. do a search on "rats nest" or vac lines and see what you come up with, IMO leave it alone, or just replace it with silicone lines if you want. If i were you i rather remove things that add weight or just clean it up, i figured out through many headach that this car is very tempermental so becareful. Also you probably herd this before but pretty much everything you want to do or thought of doing has been done and is on here so do a search first.

i like tinkering with my car.....i'm actually curious now cuz Mahjik hasn't said anything

The reason they exist is the fact that the system is not always under 100% boost. Therefore, the pressure tank stores pressure for when the source is not producing any and the solenoids need the pressure for their operation. The check valve is there to keep the pressure from leaving while pressure is not being provided to the tank. Same concept with the vacuum chamber.

If you want a working sequential setup, you need them. However, there are aftermarket vacuum chambers that you can use if you understand the system.

thanks mahjik, that explains everything

also, in order to keep the stock sequential system running correctly, what solenoids do i have to keep?

anybody know what solenoids i need to keep to retain the stock sequential system?

IIRC....
Turbo Pre-control
Charge Relief
Pressure reg. control
^Under the UIM in solenoid rack

WG control
Turbo pre-control

A side-note suggestion...
When you title a new thread, using relevant terms helps make it easier for others who have similar questions to search.

theres a guy selling aftermarket solenoids, ill try and find a link for you.

^Handling the stock ones are a joke. It seems like the crumble in your hands.

i've read saxyman's solenoid replacements, does anyone know if he is still in the business of making them? i haven't heard about him a while....

does anybody know if the stock solenoids are normally closed?

Inspection is on page F-177 of the FSM.

thanks

this is what i got from the FSM:

Purge Control: Normally Closed (duty cycle dependent)
Pressure Regulator Control: Normally Open
Turbo Control: Normally Closed
Charge Control: Normally Open
Double Throttle: Normally Closed
Charge Relief: Normally Closed
Wastegate Control: Normally Closed
Turbo Precontrol: Normally Closed

this look right?

Here's an overview of the turbo system:
http://www.autosportracetech.com/RX-...erOverview.htm

great link, thanks mahjik

If you're into eliminating things, you might want to consider the double-throttle while you have the UIM off and the solenoid rack exposed.
-----> http://www.rx7.org/Robinette/double_throttle.htm

i've already read about eliminating the DT....but i don't want the car to chunk on deceleration so i don't really want to get rid of the dashpot

Doesn't your Sig state

"1993 CYM R-1 all original
aren't you GREEN with envy"

You really need to reevaluate your goals.

With that said you really need to get a grasp on how the system operates. Your ignorance is obvious from your statements.

You have the impression Mazda just added stuff to make it harder for us to work on your car?

Remove the ABS to make room for other stuff? Relocate the solenoids because you think the location is bad?

It's only a matter of time until you screw up your car so bad you'll be selling it cheap. Lucky us......................

The DT or Double throttle control is used to protect the engine from boosting when cold.

The Dash pot is used to dampen the throttle butterflies from slamming closed & sticking when you let up quickly on the gas pedal.

The two have nothing to do with each other.

Simplified sequential. You'll have to read some.

ok, so i haven't updated my signature in like 2 years, big deal

i read more on this forum than i post so i can at least SEEM like i know what i'm talking about when i do post.

and i thought that the dashpot was controlled by the DT solenoid considering it does have a vacuum hose going to it according to the above posted diagram and i was going off the banzai-racing installation instructions (for the block off plate kit) which told me to remove the dashpot!

but, opposed to just simply correcting my misinformed ass....most people revert to an immature form of being personally insulting

i have no problem of being wrong...i'm on this forum to learn about my car and work on it accordingly, just personal insults in reference to my intelligence is really irritating

even if i did mess it up on my account, that's how you learn (the hard way), i still wouldn't sell it; there is nothing that you can't fix

grow up sled driver

ok, now i'm really irritated:

http://www.rx7.org/Robinette/double_throttle.htm

by the prophets website in order to do the DT elmination you need to remove the dashpot due to the fact that it manipulates the butterflies by use of a shaft; hence the solenoid controls the dashpot; the dashpot controls the double throttle.
this part is to prevent boosting before the car is warmed up.

now, in reference to decel the dashpot is still required to do exactly what sled driver said.

but the dashpot is also required for double throttle to work.

they have everything to do with eachother

ok, ok, i guess i got a little confused

i thought (previously) that when you remove that DT that you would just need to remove the dashpot; based upon the banzai racing installation instructions of the DT removal plate. But on rob robinette's site it goes through a whole walkthrough of removing both the dashpot and the butterflies; which would negate the need for having the dashpot in the first place b/c the butterflies aren't there to snap back causing rapid decel.

still, the dashpot and the DT are in direct relation to eachother.

See the illustration for dashpot location (item 20-190A). It's adjusted by screwing it in & secured with the jam nut.

The double throttle control is cycled by a vacuum diaphragm (The one with the vacuum hose connected to it, on the UIM).

As previously stated. The two have nothing to do with each other.

you know what? you are right kind sir.....

i was generally misinformed on where the dashpot was located....

i thought it was the DT control actuator located on the side of the UIM

but now seeing your diagram i see that they do in fact have nothing to do with eachother as the dashpot is located on the TB.

that actually really helps a lot and.......thanks

Rat's Nest Solenoids
 

I'm in the process of doing a vacuum hose job myself and trying to find good aftermarket solenoids. After some serious digging, I found this website. Looks like a lot of guys bought the kit when he initially had the group buy and he's still doing it on a case-by-case. I'm looking to pick up a kit for a simplified seq. setup, but I haven't gotten a response from him on this forum.

Original Post:

https://www.rx7club.com/showthread.php?t=404243

Company Website:

http://axiomautosports.freehostia.co...solenoids.html

rob bailey hasn't been active since like jan 07

i've actually been trying to find a source to buy simple electro-magnetic solenoids that can be used opposed to the stock ones

today i tore apart my rats nets and to my utter surprise....all of my solenoids work (outside the engine that is)..i used a battery charger on 12vlow to test the solenoids

tomorrow i'm going to make a small bracket to relocate them by the ABS just like rob did in his kit but i still have to use the stock solenoids...i'll change them out later when i can find some that i'm comfortable with.

i also might relocate the coils over by the brake booster while i'm at it

tomorrow should be a pretty productive day.

i've just been doing homework tonight

These are the solenoids i am keeping:

PRC-not turbo related
Turbo control (vac & pres)
Charge control
Charge relief
Wastegate Control
Turbo precontrol

then i need to get ahold of some vacuum hose and i'll be all done

So, your fixing something that isn't broken?
Relocating them is all well and good I suppose. But once you remove emissions and simplify, seems like you'll spend the same amount of time relocating as you would pulling the UIM 4 times to individually replace each solenoid....IF any go bad.

probably

but i don't have any emissions; it's a JDM engine and it's registered in AR so being in the military they don't even look at the car, you just have to pay like 60 bones and you're good to go for the next year.

the point of relocating them is for when they do break, because they are eventually, they will be much easier to get to and test

lately it seems like i enjoy working on my car more than i do driving it; it all started with the broken tranny that i replaced and it just spiraled from that

plus i want a cleaner engine bay; that's my ultimate goal here without going single

Solenoids
 

the point of relocating them is for when they do break, because they are eventually, they will be much easier to get to and test


Yup, I started removing my solenoids and the nipples fell apart at the slightest pressure (25K miles). Heat is a killer at the stock location.

i took mine out yesterday and i only broke one nipple but i can use another solenoid i'm not using to replace it.

so, i figured out that i can use the stock solenoid rack to attached the solenoids to the frame by the ABS, if i make a small bracket and manipulate the rack a bit....

these are the solenoids i put on the rack:

PRC
Turbo Control 1 & 2
Charge relief
Charge control

i kept the turbo precontrol and wastegate control in the stock location, i think it's fine where it is

i also found out that the place i take my car to work on it has the perfect vacuum hose i can use to do all the solenoids, if i need more i can just walk over the whole 20ft and get some more which is fantastic

so things are coming along quite nicely..when i get a new digital camera i'll have to take a few pics of what i've done

does anybody know what those twist things on top of some of the solenoids are?

there is one on the PRC; it's not a nipple but.....something different; might be a breather...idk

the thing is, i might have to buy another solenoid or if that "twist thing" doesn't change the function of the solenoid i could use one that i already have.

Twist Things
 

Yup, those are breathers...

^ do you know if they change the function of the solenoid?

i also figured out that i need to make some "U" brackets the mount the rack

i'm going to use the already threated holes on the frame by the ABS and drill a small hole into the rack to mount it there for one and then use the nut on the back of solenoid TC2 to mount the other point of the bracket, i'll also have to cut part of the rack so it's just a straight rack and not have the threaded sides

it lines up damn near perfect b/t the holes on the frame; right b/t 2 solends and then right on the back of TC2

ok, i JUST figured out that every singe one of the solenoids (except the TC2) is exactly the same; just change the function by moving the breather.....niiice

so now i don't have to buy another solenoid, i just used a diff one.