darksider

ICEMAN said to use a single vac nipple/line and KEVIN says to get a tee fitting to connect two vacs (on from each rotor).

i know there are many methods, which is better/BEST?

QUOTE FROM ICEMARK
"Okay on a 89-92 non turbo to hit both, rotors, but with only one water feed, you need to connect your hose to the bottom vac connection on the fire wall side, between the throttle body and the dynamic chamber.

There are three vac connections there. You must use the bottom one. The one that has a dog leg coming off of the dynamic chamber.

This (BTW) is the same small lead that feeds from the bottom of the purge valve and goes to throttle body to just behind the primary throttle body plate.

Now this is for a water feed only... do not run chemicals through that line, as the line feeds through the dynamic/upper intake, and then the black plastic/bakelite spacer to the throttle body, just behind the primary plates.

Now your other option (if the above is beyond your mechanical ability to get too) is to use one of the large tubes coming off of the bottom of the snorkle, and hook a small vac line size tube to an adapter and use one of those. But the vac won't be quite as strong there. I generally perfer this though, as it will hit all the intake tracts as well, instead of just the primaires."

THIS IS FROM KEVIN.
"To perform this, I use a gallon jug of water and a long vacuum hose, say 3 feet. Though this is different for nearly every year and model, the underlying goal is to find 1 or 2 vacuum nipples on the intake manifolds after throttle body, preferably on the lower intake manifold so that the water can run straight down into the block. You want to feed both front and rear rotors evenly…generally you have 4 intake runners, 2 for the front, 2 for the back. Some engines have one nipple that can feed both (s4 turbos, for example, have one above the BAC valve that is evenly split between F and R primary runners). Some engines (fd’s and s5 na’s for example) have 2 separate nipples that can be teed together externally (vacuum hose and tee) to evenly feed both rotors.

With the engine running, remove the vacuum cap or lines that used to cover the nipple you’re using. You might have to apply throttle, so the engine doesn’t die due to a vacuum leak. Insert your hose(s) onto the nipples, and bend the hose somewhere in the middle by hand so that it seals off the air intake. Now, dip the end of the hose into the water at the bottom of the jug. Either grab the throttle linkage and rev the engine up, or have an assistant hold the throttle for you, above 3500 or so. Release your crimp on the hose, letting the engine vacuum suck water in. The engine will begin to shake and misfire, apply throttle as necessary to hold 3-4krpm and keep the engine from dying.

Expect a lot of steam from the exhaust. This is normal. I let the engine drink the whole gallon at once. When it’s done, it’ll begin to clear up slowly, and you can gradually let off the throttle and replace the original vacuum hoses/caps."


THANKS A MILLION.

darksider

please... id be satisfied with a picture of the vac/nipple icemark recommended. i want to do this soo bad, help a rotary lover out.

Icemark

The only difference is placement.

On Kevins, the water is flowing in the LIM, while on my location it is flowing in to the throttle body.

But go look where the throttle body is. There are three nipples with Vac lines on the back (firewall side) of the intake manifold where it meets the throttle body. Should be real easy to see.

darksider

QUOTE FROM ICEMARK
"Now your other option (if the above is beyond your mechanical ability to get too) is to use one of the large tubes coming off of the bottom of the snorkle, and hook a small vac line size tube to an adapter and use one of those. But the vac won't be quite as strong there. I generally perfer this though, as it will hit all the intake tracts as well, instead of just the primaires."

wheres is this vac located, or called?

darksider

im looking behind between where the firewall and the DC is at and cant find any vacs that look big enought to suck the water. i have pictures but dont know how to post them either. someone help PLEASE...

rotarymarine

here are the pics

darksider

thanks for the post.
i can take better pictures with better quality of someone can point me in the directioin. thanks

darksider

Bump.

$100T2

iTrader: (1)

What's the point of doing this?

classicauto

iTrader: (3)

^^yup thats where you want to put the water^^j/k....but what the hell?

anyways...the nipples on the throttle body should be easy to see...has you TB been hacked in some crazy mod by the previous owner?

DerangedHermit

Would I do this the same if I had all my emissions removed?

Remove carbon build up on the rotors.

Jodoolin

Instinct suggests that using distilled H2O would be preferred over tap H20. Do not recall comments to that effects. Thoughts anyone?

darksider

car should be all stock... it came factory capped off i think. im sure ICEMARK would know what it is. i have everything still on the engine, can this be the reason why it is hard for me to locate the vacs/nipples? would it be easier to locate if i took off the DC, ac, ps?

darksider

you get what you put in...

RotaryEvolution

iTrader: (30)

its not that hard to locate, there is a row of vacuum lines at the back of the intake where the UIM meets the throttle body. you want someone to remove their engine so they can take a better picture? there isn't much room to get a picture, it is just something you need to find by description.

darksider

http://www.rotaryresurrection.com/ click teck and go to s5 none turbo emission removal.

is there a picture in this link that shows the vac/nipple needed to perfom the water trick? if yes can you post the picture and maybe highlight the nipple/vac/area on where it is located? THANKS

Tanjo

So..... is it REALLY hard to hydro-lock a rotary, or what? I mean, in my experiance, letting your engine drink a whole gallon of water usually is a bad idea. In a piston engine anyways.

LAN

iTrader: (1)

Read Alot of Good things about 'Amsoil Power Foam'.

darksider

which vac please... im thinking its the baby blue or yellow one goin to the IM. or maybe the marron ish one? thanks

darksider

its me the girl again, hehehe, still need help, im hot, sexy and love rx7s so answer now!

darksider

please man, its my day off. which is it, the yellow, baby blue, or marron colored vac that is used to perfrom the water trick?

royaltrex7

if im not mistaken i belive its the red one he says on the dynamic chamber by the throttle body the lower one towards the firewall so i would assume he means the red one and i belive it should hit all the internals

takahashiRyosukeFC3S

It's this RED one... God i love my Photoshop.

TR

Edit: you're welcome ^_^

royaltrex7

thats the one i thought thank you takahashi

darksider

yeah thanks man and sorry for the delay, i was banned for a week from the forum.