Forge bypass valve rotation?

Discussion in 'Mazdaspeed 3/6 Engine' started by jsilva, Jun 5, 2021.

Watchers:
3 users.
  1. jsilva

    jsilva Silver Member

    Joined:
    Jan 10, 2020
    Posts:
    599
    Trophy Points:
    43
    Location:
    PA
    Ratings:
    +148 / -11
    I have the Forge FMDVMAZ3S bypass valve. It is different from the one referred to here:

    https://mazdaspeeds.org/index.php?threads/forge-bpv-instructions-lack-thereof.12268/

    Mine has a different angle from OEM and so the larger hole won’t line up with the hose.

    C35CBB12-CDDA-486C-81AF-570154A7244D.jpeg

    But it seems like it might be able to rotate (I’ve seen a video where it is orientated like OEM). I can’t figure out how to rotate it though.

    The only thing I see are these two holes (nothing on the opposing side):

    C9D7779C-2332-496D-9BD0-8FF53B3CEE61.jpeg

    Inside they have little rubber pieces which appear to be wedged in to prevent rotation. But I have no idea how to remove the rubber pieces or if removing them would even allow rotation and what I’d do to prevent rotation. Trying to rotate by hand doesn’t budge at all.

    Any ideas would be appreciated!
     
  2. L337TurboZ

    L337TurboZ World Class Truck Squatter Greenie Member

    Joined:
    Jun 15, 2020
    Posts:
    1,138
    Trophy Points:
    113
    Location:
    Charleston, SC
    Ratings:
    +1,152 / -4
    How far off is it? When I went to a turbosmart valve I had to get a longer hose. I just took the OE one with me to an auto parts store and found a hose similar to it.
     
    L337TurboZ, via a mobile device, Jun 5, 2021
    #2
    • Like Like x 1
  3. jsilva

    jsilva Silver Member

    Joined:
    Jan 10, 2020
    Posts:
    599
    Trophy Points:
    43
    Location:
    PA
    Ratings:
    +148 / -11
    Here you can see the difference in angle vs. OEM. The hose would need to bend. I had been looking for flexible silicon hoses but then I realised that maybe the housing rotates.

    A42996B7-E6BF-4E59-8339-6DB3849CDB57.jpeg
    5190ED08-2476-43D9-B03B-88003E2E1D32.jpeg
     
  4. L337TurboZ

    L337TurboZ World Class Truck Squatter Greenie Member

    Joined:
    Jun 15, 2020
    Posts:
    1,138
    Trophy Points:
    113
    Location:
    Charleston, SC
    Ratings:
    +1,152 / -4
    Ah ok. Does the base have a seam where it could be pressed on or bolted? I still think just getting a longer hose would work. That side of the system is never under any pressure so a radiator hose/heater core hose would be easiest to source.

    Have you also tried using 90° needle nose pliers in the two holes from the first pic? Maybe that would get it to turn. If it is threaded to the base and you get it to unscrew, be sure to add loctite to the treads once clocked so it doesn't loosen up.
     
    L337TurboZ, via a mobile device, Jun 5, 2021
    #4
  5. jsilva

    jsilva Silver Member

    Joined:
    Jan 10, 2020
    Posts:
    599
    Trophy Points:
    43
    Location:
    PA
    Ratings:
    +148 / -11
    I gave it a try and it’s not budging. I asked the dude who I bought it from and he said he adjusted it for his setup but also didn’t tell me how to adjust it back to OEM position :)

    I think what you suggest is probably my best option. I’ll check out what hoses the local auto parts shop has.
     
  6. Awafrican

    Awafrican Moderator Gold Member

    Joined:
    Feb 11, 2016
    Posts:
    3,615
    Trophy Points:
    113
    Location:
    Canada
    Ratings:
    +2,879 / -11
    Take two screw drivers and put them in when holes while holding the body and turn. It may be a reverse thread so give both directions a try
     
    Awafrican, via a mobile device, Jun 6, 2021
    #6
    • Like Like x 2
  7. jsilva

    jsilva Silver Member

    Joined:
    Jan 10, 2020
    Posts:
    599
    Trophy Points:
    43
    Location:
    PA
    Ratings:
    +148 / -11
    Just as an update…

    I was able to rotate it using a bottom bracket tool for use on bicycles :)

    Strangely after tightening it and after I installed it the upper portion became loose. Somehow the bolts tightening it to the intercooler loosens it. So I had to set it at the rotation necessary where I knew it would go after it loosened and then tightened it rotating by hand after installed. A little weird but it seems to be ok.
     
Loading...

Share This Page

Users Viewing Thread (Users: 0, Guests: 0)