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Rebuild Cyclone intake manifold

Posted by snowborder714, May 11, 2010

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  1. snowborder714

    snowborder714 Moderator

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    I picked up a Cyclone intake manifold and would like to rebuild/refresh the whole thing. I have new OEM inner gaskets, so that part is taken care of. I tried removing the shaft the other weekend, but am having issues removing all of it. The shaft is 2 pieces, utilizing a slip joint in the middle (like this: [-). I'm able to easily remove the outer portion of the shaft, but the inside portion does not want to come out.

    Has anyone ever completely removed this, or do you usually just remove the outer portion to replace the seal? And if someone has replaced the seal, what size is it?
     

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  2. romeen

    romeen DSM Wiseman

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    I wonder if Mitsubishi made it like that deliberately so that the inner half won't be removed. They may have inserted it from the opposite side (TB side) which is capped off. Nonetheless, maybe try sticking it in the freezer for a while. The different contraction rate of the aluminum vs. steel might allow you to pull it out (or make it worse LOL).

    I searched the forums and a general google search and could not find any info about the size of the seal. I also did not come across any reports of a leaking seal. If you find out let me know.
     
  3. snowborder714

    snowborder714 Moderator

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    If it's not supposed to come out, I don't need to take it out. Just wondering if it was possible, or if it's in there for good as you said (and I kind of expect).
     

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  4. turbosax2

    turbosax2 Moderator

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    We did get the shaft to move some. So I don't believe it is in there for good, although if the only seal to replace is the one at the end then no harm done by leaving the rest of the shaft in there.
     

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  5. wannarace

    wannarace Proven Member

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    I've been trying to figure out the same thing. I just pulled out the first half of the shaft on mine a couple days ago. I'm looking to get a port job on my manifold so I have to get that secondary shaft out.

    Considering the 2 sides mate together, I can't see how there could be somthing obstructing it from comming out. I can get it to slide back and forth but it hangs up somewhere in the middle. I thought to hammer it out of the other side but I would rather not ruin the plug if I can help it.

    I think I may be able to pick up another cyclone locally. Worst case scenerio is to hack this one up to find a solution and just pick up the other one to use.
     

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  6. snowborder714

    snowborder714 Moderator

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    For reference, the seal size is 8x14x4mm. Motion Industries carries a seal of this size with a part number of 00602729. I have not confirmed that this seal will work, and will post up when I do.
     

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    12.529 @ 110.820 · 2G DSM
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  7. mysticj

    mysticj Proven Member

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    Have you check the condition of the actuator? I didn't rebuild mines but I did remove the runners within the plenum section.
     
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  8. snowborder714

    snowborder714 Moderator

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    I finally was able to install this seal and it looks like it is a great fit. I haven't put one back together or ran/boost leak tested one, but just from looking at it, I don't think it will have any problems sealing properly. Here are some pictures.

    IMG_1284 (Copy).jpg

    IMG_1285 (Copy).jpg

    IMG_1286 (Copy).jpg

    IMG_1287 (Copy).jpg
     
    Last edited by a moderator: Jul 10, 2014

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  9. snowborder714

    snowborder714 Moderator

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    A user I sent one of the above seals to on the link forums has verified it holds 30 psi :hellyeah:
     

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  10. agentorange313

    agentorange313 Supporting VIP

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    Just bought a cyclone manifold and you guys saved me a lot of research and time, and since time is money, money too:thumb:

    thank you all
     

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  11. snowborder714

    snowborder714 Moderator

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    There's also some info on the forums about the gaskets as well, so you'll have a fully rebuilt manifold.
     

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