so im looking to replace my vacuum lines in my car, so when i finally got to seeing them today i noticed the lines were so bridle that some broke, aswell as some were not connected and some were missing entirely. i was wondering what website people would suggest i order a new kit from, i decided to replace the vacuum lines and plug wires because the car would start and run superb but when i would give it more then half throttle it would backfire and i would lose my boost. i am wondering if this is why? thanks a lot and im sorry if this is a stupid question i just am new to the rotary and would like to become as knowledgeable as many of you

 

you could order from hose technices or even from ebay. just make sure there silicone. there should be kits labeled "fd3s" or "rx7" for both

 

there is a couple of threads that show you how to do this,plus if you wanted you can get rid if some of those lines and solenoids thats is not needed.

 

rx7store.net they have the hose techniques kit which has all the hose u will need plus some.

as far as how ur car runs the reason it is fine untill half throttle is that those hoses control your turbo control solinoids and if they are broken or missing ur turbos won't work right depending on which one is messed up all sorts of things can happen the backfire and loss of boost is ur car loading up on fuel expecting the turbos to come online properly and then the ecu figures out something is wrong and slams the wastegate open to keep u from breaking something. Call mazda and get a colored vaccum diagram its almost the size of a poster and u can unfold it several ways to show u the different divisions of hoses. put them all back in properly and then try it again. untill then DON'T drive it.

 

+1 on hose techniques, but I would NOT buy the entire kit (too much hose you don't need). Just measure the diameters you need (3.5 or 4 mm) and take a good guess on how much you need. Don't go crazy with your estimate, but a little extra is always nice to have later.

Charlie

 

my next question is where can i get a poster of the vacuum hose diagram, i have it saved on my computer from this forum but where can i actually order it from?
also restrictor pills, i broke one today wehn removing a line, actaully it just kind of snapped but reguardless i was wondering here i could find some new ones?

 

Here you go Hope it helps and good luck.
http://www.turborx7.com/rx7vacuum.htm

 

https://www.rx7club.com/showthread.php?p=8113663

You can it in the FAQ under Vacuum Hose Diagrams

 

why is there so far fewer lines in the simplified diagrams?

 

I'm selling my hoetechniques kit (super blue) and I live in calgary. PM me.

 

Simplifying the Sequential deletes your emissions equipment. Only four of the solenoids in the rats nest are for controlling the turbos, the others are for emissions and one for the fpr.

 

sorry if this has all happened in another thread iv searched a bit but is there any detailed writeup on the simplfied sequential and which solenoids to remove and such?

 

I highly recommend buying your silicone from a reputable source. There is a lot of nice looking silicone that is not durable and fades/tears easily. Baker Precision, Hose Techniques, HighTempSilicone are all sources for the better stuff.

Ebay and your local parts store generally only sell the crap stuff.

Dave

 

Good Times.

Been there. Done that.

My advice to you isn't worrying about getting the new hoses on - its time consuming but not so bad with the vacuum diagram handy. Hose Techniques is a good kit. I have a rack with all solenoids already done in blue so PM if you want to go that route. You would only need a few more hoses to finish up all the connections. If you want to learn get the hoses and do it yourself! Make sure you don't need the car for a couple days or more in case you break something crispy and have to order parts.

What you need to worry about is getting the old lines OFF without breaking anything. Many of the solenoids become brittle and snap with the slightest pressure.

Try to get most of it out in one piece if you can. You can try to disassemble the rack by removing the infamous lock tite gripped screws - or you can remove the fuel lines and take the WHOLE rack out. Ive done it both ways and removing the hard lines and vacuum rack together is by far the best route IMHO if you like your knuckles and want to keep your sanity. Leave those little screws alone!

Heat the lines and twist gently - DON'T PULL the old vacuum hoses off.

Also, upgrade your one way check valves at this point. Dale Clark has a nice set of Viton ones for not too much. I believe he also sells them on ebay.

Its a really good feeling when you're done.

 

I got my diagram from racing beat but u can also get it from ray crowe at malloy mazda he has the best prices tell him u are an rx7club member his number is
888-533-340 do not buy used restrictor pills it is always best in my experience to get the proper part and get it new when it is something that can wear out.

 

^^^ The restrictor pills are metal?

How can you break them?

 

i have ordered them from hosetechniques. is there any writeups on the simplified sequential vacuum lines?

 

no writeups...you need to follow the diagram

 

alright will do, thanks alot everyone

 

I don't quite agree. I would proceed this way:

Print the full diagram and the diagram of the setup you want to have. Compare what's missing.

Some of the systems eliminated in a simplified sequential setup include:
- double throttle
- EGR (if present)
- ACV and control solenoids

If you only remove the solenoids you're missing much of benefit of simplification. You also want to remove the valves and actuators that they control and install block off plates to cover the openings. It will help to make a list of the systems you'll be eliminating and look up how to eliminate each system.

Dave

 

i heard that since my car is from japan it does not have the air pump and that air care stuff, sorry as to not knowing alot about that kind of stuff, but i want the simplified sequential setup. i want to remove unnessicary solenoids and install block off plates where possible, does anybody know off the top of their head which systems i would have to eliminate in my JDM car