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  1. #1
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    Gear case Bearing Swap

    So I have a LU gear case with a housing number of 1647 9147 C (No Suffix Number). From what I gather this is a "big bearing" 200 housing. My question is will my internal parts fit in a Sportmaster Housing?
    We only go through this circus once...so enjoy the rides!!!

  2. #2
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    only if you know how!!!!! carrier must be used with it, leaving you with no way to drain the oil PS there is no 200 "case" per say its the gears that determine what merc put it on

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    Quote Originally Posted by TEXAS20225 View Post
    only if you know how!!!!! carrier must be used with it, leaving you with no way to drain the oil PS there is no 200 "case" per say its the gears that determine what merc put it on
    Thanks Tex, I have just heard them described as 200 cases. I thought the part number would clarify which one it is. It's a Torquemaster I believe. It has a Bob's nosecone installed. The motor is a 97 ProMax 225 but it's not the stock case.

    I have this one and another with higher gears. Former owner said they are @1.75. Definitely higher than the 1.87 I have on now. I think I will sell the two and look for a complete Sportmaster.

    I guess the SM is a rear drain?
    We only go through this circus once...so enjoy the rides!!!

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    if it is indeed a torqmaster all will work and it will have a rear drain in the carrier so nothing is lost!!!! as 4 200 case ive heard it for 30 years or better but if you do a few 100 of them you would find the casting 1647-9147-1 but none have the 1647-9147 casting that's a exclusive consumer case none were used on hipo motors i bought my first 225 Pmax brand new in 1995 it had torqmaster on it i had JC cone it! i liked his way of doing it so well i copied it for the next? well i guess im still doing it Lol ps one other thing the cle and torqmaster gear coloum is 3/16 shorter then the sporty if you had sporty carrier and torqmaster,cle carrier side by side you would see what im saying

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  6. #5
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    ps one other thing the cle and torqmaster gear coloum is 3/16 shorter then the sporty if you had sporty carrier and torqmaster,cle carrier side by side you would see what im saying

    I have access to a CLE I will double check the length. Good to know about the drain I will check to be sure. Thank you Texas, I appreciate the help. You are a wealth of knowledge on here.
    We only go through this circus once...so enjoy the rides!!!

  7. #6
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    you are welcome all this stuff wont do anyone anyone any good if i take it all with me so ask away its not trouble to help i paid for most of this the hard way out of me pocket i have made so many little pieces out of big pieces its pain full to remember them. Bobby V.

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  9. #7
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    Quote Originally Posted by Hydrodreams View Post
    So I have a LU gear case with a housing number of 1647 9147 C (No Suffix Number). From what I gather this is a "big bearing" 200 housing. My question is will my internal parts fit in a Sportmaster Housing?
    Hi Let me know if you want to sell your 1647-9147-C lower unit. I am trying to PM you but I don't think it's going through. Thank you


  10. #8
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    I got a old unit with last 4 #s 7223. What did this come from?
    It's been layin round so long I cant member what it was on 15yr ago. Old 1st gen 175 .maybe?

  11. #9
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    its probably a preload case, you should remember that hp rating is not connected to case casting numbers but whats inside of case thats how it should be remembered and referenced to!! As production years got newer case loading changed quite a bit towards the end of the 2.5 motor 150 no longer had 2:1 ratio but had same as 200 both 1:87 only 135 had 2:1

  12. #10
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    Quote Originally Posted by Hydrodreams View Post
    ps one other thing the cle and torqmaster gear coloum is 3/16 shorter then the sporty if you had sporty carrier and torqmaster,cle carrier side by side you would see what im saying

    I have access to a CLE I will double check the length. Good to know about the drain I will check to be sure. Thank you Texas, I appreciate the help. You are a wealth of knowledge on here.
    Early CLE had 1 3/16" propshaft with no thrust washer on rev gear and longer carrier. Later CLE had 1 1/4" propshaft and rev gear thrust washer, carrier the same as TM and Sporty.

    Dave
    1980 Cougar 19 tunnel,90 2.4L Bridgeport EFI in middle of restoration.
    1988 BAJA Sunsport 186, 96 225 Pro Max
    79 12' Auminum, 95 Merc 9.9
    RIP Stu
    "So many idiots, so few bullets"

  13. #11
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    x2 Dave and there was a version of the earlier CLEs that had the 1 3/16 propshaft that had double bearings in the carrier stacked end to end and prop shaft had no thrust washer along with a elongated bearing surface to accommodate the twin bearings i have this pair of items and have had for years and years along with a first version 13/16 dia carrier that heavier constructed then the late models i guess i better shut up or people will realize im 3/4 of a century old

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  15. #12
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    Quote Originally Posted by TEXAS20225 View Post
    x2 Dave and there was a version of the earlier CLEs that had the 1 3/16 propshaft that had double bearings in the carrier stacked end to end and prop shaft had no thrust washer along with a elongated bearing surface to accommodate the twin bearings i have this pair of items and have had for years and years along with a first version 13/16 dia carrier that heavier constructed then the late models i guess i better shut up or people will realize im 3/4 of a century old
    They did some crazy changes back in the early 90's, not even early or late changes. More like when we feel like it and create all kinds of confusion. Not just gearcases but engines as well.

    Dave
    1980 Cougar 19 tunnel,90 2.4L Bridgeport EFI in middle of restoration.
    1988 BAJA Sunsport 186, 96 225 Pro Max
    79 12' Auminum, 95 Merc 9.9
    RIP Stu
    "So many idiots, so few bullets"

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