1957 Gray Marine 70hp

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   Having a time with carbureter and timing adjustment on 1957 Atom Skier with 70hp Gray Marine.  The carb is a one barrel updraft and has been rebuilt a number of times.  I can get it running (rough) with liberal use of starting fluid, but difficult to keep running long enough to get the carb and timing properly adjusted.  The carb continues to 'load up' and will not get full power. 

Any suggestions are very welcome- I love to tinker with the old boats, but this one continues to be a real challenge-

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92NautiqueSNOB Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Newbie Joined: September-17-2007 Location: United States Status: Offline Points: 19	Post Options Post Reply Quote 92NautiqueSNOB Report Post Thanks(0) Quote Reply Topic: 1957 Gray Marine 70hp Posted: July-07-2008 at 7:04pm
	Having a time with carbureter and timing adjustment on 1957 Atom Skier with 70hp Gray Marine. The carb is a one barrel updraft and has been rebuilt a number of times. I can get it running (rough) with liberal use of starting fluid, but difficult to keep running long enough to get the carb and timing properly adjusted. The carb continues to 'load up' and will not get full power. Any suggestions are very welcome- I love to tinker with the old boats, but this one continues to be a real challenge-
	92 SNOB 1957 ATOM

RainDog Members Profile Send Private Message Find Members Posts Add to Buddy List Platinum Member Joined: February-21-2007 Location: Mke/Grn Lake WI Status: Offline Points: 1387	Post Options Post Reply Quote RainDog Report Post Thanks(0) Quote Reply Posted: July-08-2008 at 11:20am
	If you don't get any suggestions, I've received good advise on my Fireball V8 Gray motor at marineengine.com and oldmarinengine.com forums.
	62 Classic 2002 Super Air

92NautiqueSNOB Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Newbie Joined: September-17-2007 Location: United States Status: Offline Points: 19	Post Options Post Reply Quote 92NautiqueSNOB Report Post Thanks(0) Quote Reply Posted: July-10-2008 at 1:36pm
	Thanks for your suggestion- both forums had some additional information that I did not have in the original Gray and Zenith carb manuals. Will give them a try this weekend. Thanks again-
	92 SNOB 1957 ATOM

GeoBat Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: July-06-2008 Location: United States Status: Offline Points: 4	Post Options Post Reply Quote GeoBat Report Post Thanks(0) Quote Reply Posted: July-11-2008 at 1:42am
	You said loading up. Is gas running out of carb ? If so the needle is stuck open or the floats hung. Those old carbs are really simple and are basically the same as older gas-burner tractors. You can get overhaul kits at any farm tractor parts house. (cheap)
	oldies aint stupid

92NautiqueSNOB Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Newbie Joined: September-17-2007 Location: United States Status: Offline Points: 19	Post Options Post Reply Quote 92NautiqueSNOB Report Post Thanks(0) Quote Reply Posted: July-14-2008 at 11:31am
	Thanks to all- it was a combination of timing and float height adjustment. It looks as if I bent the float arms slightly while reassembling the carb so many times. Got back into position and running better now!
	92 SNOB 1957 ATOM

8122pbrainard Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045	Post Options Post Reply Quote 8122pbrainard Report Post Thanks(0) Quote Reply Posted: July-14-2008 at 2:35pm
	Jamie, I'm glad you found the problem with the float level set too high. I'm surprised that you had a problem because the setting is real sloppy. It can be off + or - 1/16" and stiil be ok. It had to be off a lot! If it does happen again, one good check for a high float level setting or a stuck float needle is to remove the drain plug on the bottom of the carb. On a up draft, the excess fuel will show up in the bottom of the carb. BTW, get rid of the damn starting fluid!! It may be too late because you may have already caused damage to the cylinder walls and rings. Ether is a very strong solvent and will wash the oil off the cylinder walls. Since you like to "tinker", run a compression check and report back.
	54 Atom 77 Tique 64 X55 Dunphy Keep it original, Pete <

1957 Gray Marine 70hp

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