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| Author |
Message |
    
Alan James
| | Posted on Tuesday, November 12, 2002 - 01:48 am: | 
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Just brought a Gray 4-52 ,Sr no C66641 home today does anyone have the Hp rateing and approximate date of mfg? Its all there and was supposed to be running when pulled out. Thanks . Al |
andrew
| | Posted on Tuesday, November 12, 2002 - 09:43 am: |
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Alan,
Gray Marine Four-52
- 4 cylinder
- 3-7/16 x 4-3/8
- 162 cubic inch
- Lugger: 42HP at 1800 RPM
- Express: 63HP at 3000 RPM
We sell some Gray manuals if you need them.
Regards,
Andrew |
Alan James
| | Posted on Tuesday, November 12, 2002 - 10:48 am: |
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Andrew: How do you tell the difference between the Lugger and express? Thanks Al |
andrew
| | Posted on Tuesday, November 12, 2002 - 11:22 am: |
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Al,
Good question.... Doesn't the nameplate show the HP rating?
Andrew |
Alan James
| | Posted on Tuesday, November 12, 2002 - 10:57 pm: |
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Plate on exh says Gray Marine Detroit Michigan,Bell Housing says use 30 wt oil, 4-54 C66641,Gear reduction RA20 and Paragon sr no, is there one thats supposed to be there and isn't? Thanks Al |
Bruce
| | Posted on Wednesday, November 13, 2002 - 08:59 pm: |
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Alan, the bell housing/tranny cover data plate is all you get. The S/N puts the engine production in 1945 or 1944. 1944 S/N begin with C-62000. Your C66642 is 4642 units along in production. War years- hard to say if it's a '44 or '45. '46-'49 production S/N begin with the letter prefix "D". |
Bruce
| | Posted on Wednesday, November 13, 2002 - 09:23 pm: |
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The 1950 versions : Four-162 Lugger and Express ran 16x10 and 13x10 props respectively. The 162CI Four 75 (75 HP) ran a 10x10 prop. The smaller prop on the Four 75 (75 HP)let it turn up to 3600 as compared to 1800 for the Lugger rated 42 HP . THe Express would turn 3000 rpm and develop 63HP. All depended on whether you wanted push power or GIT!! |
Alan James
| | Posted on Wednesday, November 13, 2002 - 11:26 pm: |
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Thank you everyone for the input on this, as it has the Paragon gear reduction on the end of the bell housing I'm going to assume that it is the Lugger and run accordingly. Better safe than a rod through the block. Thanks Al |
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