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Thread: Once Again... Blower Rebuild Parts ???

  1. #1
    Join Date
    Apr 2002
    Location
    West Flamborough, Ontario, Canada
    Posts
    5,430

    Question Once Again... Blower Rebuild Parts ???

    My blower is getting more and more noisy, so it's high time for a rebuild (and maybe a little porting). I've asked around and come up with the following parts list:

    Qty Part Number
    Required
    (ea)

    2 Bearing, Needle, INA #FC65477.1
    1 Bearing, NSK #NC6203C3X28,
    (#6203DDU8AC3EX28)
    1 Bearing, NSK #NC6204C3X28,
    (#6204DDU8AC3EX28)
    1 Seal, Chicago Rawhide #7968
    1 Loctite Gasket Eliminator 518, #51831
    1 Husky Grease, #00603

    I'm still looking for a part number for the two bearings that go on the rotor shafts between the drive gears and the rotors themselves. It's rumoured that the NSK #6203DDU8AC3EX28 bearings are used here as well, but I'd like to be sure before I order the wrong parts. Apparently, there are a couple of seals that go into the cartridge near these bearings, and I need part numbers for those. Also, if anyone knows the appropriate part number for the '93+ style spring-loaded couplers, I'd like to swap a new one into my '90 blower during the rebuild.

    A new technical article might be in order!

    Thanks in advance,

    Sean

  2. #2
    Join Date
    Apr 2002
    Location
    West Flamborough, Ontario, Canada
    Posts
    5,430
    Anyone???

  3. #3
    Join Date
    Jun 2002
    Posts
    1,599
    When I opend mine I think the center bearings were the same(not sure). On a blower I had that was totally fried the center bearings were still in better shape than the nose bearings(not loaded down as much). The casting is also formed around those bearings, plus timing the rotors back seems impossible, even a few thousandths off would toast the rotors and aluminum would probably imbed itself in the engine

    I'm planning on doing this, but I'll just let you know what my "plan" is. I am going to have the rotors painted with urethane automotive paint(PPG, BASF etc etc), this should take the heat and close the rotor gap. Maybe a nice purple or yellow for more power. I was just going to compare the max boost say in 3rd at a certain RPM(about 5 grand), before and after.

  4. #4
    Painting the rotors would not be a good idea.

  5. #5
    Join Date
    Jun 2002
    Posts
    1,599
    why not, they did it in 94

  6. #6
    Eaton did not use paint on the rotors ever! Instead they coated them with a teflon coating, and it has issues with flaking off and being ingested by the engine.

  7. #7
    Join Date
    Jun 2002
    Posts
    1,599
    paint inside the intake system does no harm if it flakes, if it doesnt work I'm out 5$ in paint I used from my can to paint the external surface of the blower. If it was harmful I wouldnt bother

  8. #8
    Uhhhh......OK

  9. #9
    Join Date
    Jun 2002
    Posts
    1,599
    yea, I dont take suggestions too well, if it aint broke break it

  10. #10
    The 94-95 Eaton M90 used on the Tbird SC does NOT have teflon coated rotors.

  11. #11
    OK Paul what are they coated with?

  12. #12
    They are a simple epoxy based coating quite similiar to the powdercoat used on the outside of the blower. This has come up in conversation before on the boards and has become a pet peave of mine, sorry if I seemed harsh about it. Personally, I will not put a coated rotor blower on my car if its that lousy coating from eaton as I am very unkeen to the idea of it flaking into my car which I witnessed Chris Mendola's 3 month old at the time S model had done on his coy stage 2 motor (ouch). Have I mentioned lately that ESM will be offering recoated rotors done in house in the near future?

  13. #13
    No problem Paul. Thanks for clearing up the coating subject. I agree with you about the coating. There will never be any on my rotors.

  14. #14
    Join Date
    Oct 2002
    Posts
    156

    coating?

    What kind of coating will ESM be using to recoat?

    Stan W

  15. #15
    That is TBA as we have not yet completed testing of coatings. I can say it will be an interference fit coating.

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