supraturbo1987

iTrader: (4)

Great thread Dale. As soon as your check valves come in, I will be doing the hose job and chcking my solenoids since my boost pattern is soooo out of whack.

Trev

ngirondo

iTrader: (3)

pmed on Check valves

Rocketeerbandit

iTrader: (3)

So, they offer high temperature more resilient rubber caps. I purchased the sizes I need but why purchase the chemical caps if we're worried about temperatures? It has a rating of 200f* while the ones I purchased are 500f*

DaleClark

iTrader: (55)

You don't need 500 degrees on vacuum caps. I've extensively tested the EPDM caps, they do great.

I only say "get the chemical resistant" because that's how McMaster-Carr lists them. Really, you just need the EPDM rubber.

Dale

Zepticon

iTrader: (1)

On the last stretch on my full silicone vacuum job i found out two potential issues that others need to be aware of, if they are fresh at this as i am:

- The Wastegate hose and Turbo Precontrol hose (both comming from turbine housing) have a built in restrictor to them making it important that you reuse those, or get those hoses new from Mazda. Part number for the hose kit should be N3A1-13-ZLY according to my EPC, and cointains both hoses with restrictors. I discovered this by chance researching the hoses on the next point.

-The Turbo Control hoses that mounts on the acutator have a different diameter on each end, making it very hard to replace them with a silicone vacuum hose (its either to tight or to wide). Best option is to use OEM hoses from Mazda, since they are also easy to reach, and low on the engine, away from the worst heat soak. I think the part numbers for them are N3A3-20-346A and N3A3-20-345A. They also have a rubber protector on them with the number N3A3-13-855. I have notverified them yet since the EPC drawings are confusing and i have to order a set to see. Can anyone here maybe verify them?

speedjunkie

iTrader: (3)

Yeah that problem is very well documented haha. I had that problem as well. If you swap those hoses and don't have restrictors of some kind in them you will only get 7psi of boost. If you swap those hoses you can use carb jets as restrictors, but I don't remember the sizes you need. It should be on the forum somewhere though. I found the info on here years ago.

j a r o d

iTrader: (2)

Are the viton check valves still available?

DaleClark

iTrader: (55)

Yep, PM"d you on it.

Dale

kenpo2

Can you send me the info to buy from you

TwitchE

not to beat a dead horse, but is there another reliable place to buy the silicone hose from that has the thick walls? looking to replace the hoses on the rats nest soon and would rather not have to go back in and repeat work. thanks!

-TwitchE

DaleClark

iTrader: (55)

I think this is in the thread somewhere -

TurboLogic

They have top quality hose at a great price, and it's in stock ready to ship.

Dale

The Spyder

iTrader: (8)

Pineapple Racing sells a kit with thick wall silicone tube and that includes the check valves and laminated hose diagram.

CryptoPatriot

What are the two vacuum lines connected to the block on either side of the primary rail. I am trying to better understand the simplified vacuum diagram and see they eventually connect to the intake elbow of the turbo? I was mostly curious why there was no check valve in there and then realized I dont really understand what is happening there.

DaleClark

iTrader: (55)

Those hoses bring in air that is atmospheric pressure to help atomize fuel at low speed and idle. Inside the engine it's vacuum, so you have air at atmospheric pressure "spraying" in to help swirl the fuel around.

Just leave that system be, it does a good job and isn't in the way. You don't have to go to the primary turbo inlet, you can just have a small filter or something on those hoses. It just needs clean air that's atmospheric pressure.

Dale

maaaaackle

iTrader: (1)

@DaleClark sorry to bump this old thread but just wanted to know if you still sell those viton check vavles?