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Gray single cylinder 4 stroke model O

Old Marine Engine » Gray Motor Co - early 1 and 2 cylinder » Gray single cylinder 4 stroke model O « Previous Next »

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nickm
Posted on Saturday, October 18, 2003 - 12:55 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

i have a model o gray no 159. i would like to know where i could get info and or copies of the trip gear and pictures of other engines. what color were these engines and is there a dating service for this model. if any one can tell me whats missing from my engine it will be gratefully appreciated.
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andrew
Posted on Sunday, October 19, 2003 - 07:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Nick,

I think you tried to post your photo by entering the "path" to your file... you don't have to do that, just type the backslash "image{anyword}" with anyword being any word... then after you post you will be prompted to browse your hard drive for your photo.

Regards,
Andrew
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nickm
Posted on Sunday, October 19, 2003 - 10:31 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

gray7
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nickm
Posted on Sunday, October 19, 2003 - 10:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

picture above shows the engine in question any help would be appreciated
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rholcomb
Posted on Monday, October 20, 2003 - 01:01 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

here is a shot of a doman with i think the same bracket bob

domanbrkt
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Tom Stranko
Posted on Monday, October 20, 2003 - 06:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

It almost looks like Bob's engine had a chain driven rotary mag?? Maybe a repair of convenience?
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nickm
Posted on Monday, October 20, 2003 - 09:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

The chain cog came with it but is not an original part
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Matt
Posted on Monday, October 20, 2003 - 11:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

NickM, It looks just like my Universal Falcon. With the exception that mine has a timer on it.
Matt M in western Washington
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Searcher
Senior Member
Username: searcher

Post Number: 182
Registered: 10-2004
Posted on Thursday, March 22, 2007 - 08:36 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Here is a Gray Model O I hauled home recently. There was no carburetor on it. The photo of a multicylinder 1927 Gray has the same quadrant for the carburetor adjustment that is on this engine. Was the same carburetor used but maybe a smaller size? Anybody recognize the brand and model of that carburetor? If I cannot find an original, what would be a suitable substitute?




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Searcher
Senior Member
Username: searcher

Post Number: 187
Registered: 10-2004
Posted on Thursday, March 29, 2007 - 05:40 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Two other questions related to this Gray Model O. The end of the crankshaft has a hole at a right angle through it, presumably a pin to accomodate a crank. What did that pin look like? The end of the crankshaft also has a threaded hole in it. What was that for?
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J.B. Castagnos
Senior Member
Username: jb_castagnos

Post Number: 232
Registered: 07-2002


Posted on Thursday, March 29, 2007 - 09:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I think that what you're looking at is the nut that holds the flywheel on. It probably did have a pin for a crank.
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Searcher
Senior Member
Username: searcher

Post Number: 188
Registered: 10-2004
Posted on Thursday, March 29, 2007 - 11:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

JB,
I see what you mean now that you have pointed it out. It IS the nut that holds the flywheel on. I thought it was an extension of the crankshaft. With all that extra thread showing in the end of it, I thought that maybe something screwed in there that somehow held the flywheel in place. On the handful of engines I have, the flywheel is held on by either a big hex nut or a jib key. I just wasn't thinking 'outside the box'.
Thanks for responding.
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Hampton Phillips
New member
Username: hampton_phillips

Post Number: 2
Registered: 08-2007
Posted on Saturday, December 01, 2007 - 07:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I have a Gray Model "0", please see pictures. It is stock issue except I have taken the guts out of the mag and used its points with a 12v auto coil, I tried to hid the mod but you can see a red wire giving it away. I also put an alum "T" piston i rather than the cast iron "T" piston, engine shakes much less. The mag drive, water pump and carb. are all original issue, the S.N. is 631. It is in a Poulsbo Boat I also restored.Gray Model "0" Engine plateGray Model "0" water pumpGray Model "0" Mag & PumpGray Model "0" Mag DriveGray Model "0" Port FowardGray Model "0" Carb & ManifoldGray Model "0" Flywheel, nut and starting pinGray Model "0" installed in Poulsbo Boat
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John W Smietana
Member
Username: jw_smietana

Post Number: 11
Registered: 09-2004
Posted on Sunday, December 02, 2007 - 01:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

The pin is for the crank,I use a split pin works fine,good idea on the alum. T piston---John
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Searcher
Senior Member
Username: searcher

Post Number: 214
Registered: 10-2004
Posted on Sunday, December 02, 2007 - 01:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

What is the make and model of the carburetor on your 'O'.
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Hampton Phillips
New member
Username: hampton_phillips

Post Number: 3
Registered: 08-2007
Posted on Sunday, December 02, 2007 - 03:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

The carburetor is a TILLOTSON no. 1A. It has 100's of parts inside, must have been designed by some one trying to make it as complicated as possible and still have it work, I have never seen anything like it. I have a spair that I found on eBay but it is unrestored so far.
I have a friend with the exact same block casting but his is a Doman. It has the primer and plug in the head and the timer on the front on the cam stub. It has no mag and was made for a buzz coil. He also has it in a restored Poulsbo boat, we are twins hahaha.
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Searcher
Senior Member
Username: searcher

Post Number: 215
Registered: 10-2004
Posted on Monday, December 03, 2007 - 11:20 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Thanks for the info on the Tillotson carburetor. I had a Zenith with a Zenith spark arrestor on it laying around and stuck that on my 'O' for lack of knowing what the original might have been.
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J.B. Castagnos
Senior Member
Username: jb_castagnos

Post Number: 319
Registered: 07-2002


Posted on Monday, December 03, 2007 - 08:33 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I've seen these engines over the years as US Falcons, Grays, and Bridgeports. I believe US Falcon took over Doman. There are mirror image engines out there, I never saw them side by side and assumed that different mfg used one or the other. Bill Garlington just bought two on ebay, both Grays, one RH and one LH. One is obviously early, has a tapered shaft and nut on the flywheel, ser# in the 90's. The other is later, has a high # and the flywheel is bolted to a flanged crankshaft much like a modern automotive engine. Does anyone know any more about these engines, who actually built them and why the reversed designs?
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Hampton Phillips
Member
Username: hampton_phillips

Post Number: 6
Registered: 08-2007
Posted on Wednesday, February 13, 2008 - 02:34 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hi. If you are still around you asked some questions of me a while ago. The spark on mine where I am the most happy is full returd 25 deg ATDC and at full advance it is 15 deg BTDC. It starts best at about 10 deg ATDC. Any other questions please ask. I don't know much about other engines but I know about all there is to know about mine.
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Robert
Senior Member
Username: robert

Post Number: 202
Registered: 07-2003
Posted on Thursday, February 14, 2008 - 01:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Beautiful restoration. I hope you kept the guts of your Wico EK - pricey mag these days. What is the purpose of the coil in the fuel line just before the carb? What size of Joe's Gear is that?
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Hampton Phillips
Member
Username: hampton_phillips

Post Number: 7
Registered: 08-2007
Posted on Thursday, February 14, 2008 - 01:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hi Again. The only part of the Mag that I removed was the coils. They didn't work anyway and the mag was not the click type, not sure how to other wise describe it. In place of the coil I put a condenser and used the existing points. I ran the points wires very discreetly to the storage box where the automotive coil is and a high tension wire very discreetly back to the mag. box and out the side so it looks normal and unmodified. I did keep the orig. coils if anyone wants them I will give them to a worthy cause, I will never use them. I replaced the coil cores with blocks of oak wood painted black, needed for the points to work.
The coil of tubing at the carb. has no function, I just thought it looked cool so I made it on a form and polished it, or at least I have it polished when ever I show the boat.
Another thing I did since these pics were taken, I put a small brass pulley on the spark control shaft and with use of some SS down rigger wire ran the wire pair around the pulley, down a copper tube and to a controller just like the throttle control but on the port side of the box. Now I don't have leave the steering station to change the advance. Changing it is required if desiring a very low idle speed.
Ask any question or for any pictures if you like. Hamp

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