Does anyone know the ratio for this motor? 1956 Evinrude 30 hp bigwin. Thaks Todd
L litymaspf Cadet Joined May 25, 2009 Messages 8 May 26, 2009 #1 Does anyone know the ratio for this motor? 1956 Evinrude 30 hp bigwin. Thaks Todd
CATransplant Admiral Joined Feb 26, 2005 Messages 6,319 May 26, 2009 #2 Re: gas/oil ratio for 56 30 hp bigtwin 24:1, without question. Don't listen to anyone who suggests 50:1.
Re: gas/oil ratio for 56 30 hp bigtwin 24:1, without question. Don't listen to anyone who suggests 50:1.
L litymaspf Cadet Joined May 25, 2009 Messages 8 May 26, 2009 #3 Re: gas/oil ratio for 56 30 hp bigtwin would you happen to kow the spark pllug gap? I bought some new J6c champions i am pretty sure that is wha it takes.
Re: gas/oil ratio for 56 30 hp bigtwin would you happen to kow the spark pllug gap? I bought some new J6c champions i am pretty sure that is wha it takes.
Tim Frank Vice Admiral Joined Jul 29, 2008 Messages 5,351 May 27, 2009 #4 Re: gas/oil ratio for 56 30 hp bigtwin CATransplant said: 24:1, without question. Don't listen to anyone who suggests 50:1. Click to expand... I've seen a number of posts that suggest 20:1 as the correct mix for that vintage.
Re: gas/oil ratio for 56 30 hp bigtwin CATransplant said: 24:1, without question. Don't listen to anyone who suggests 50:1. Click to expand... I've seen a number of posts that suggest 20:1 as the correct mix for that vintage.
wbeaton Commander Joined Jul 30, 2006 Messages 2,332 May 27, 2009 #5 Re: gas/oil ratio for 56 30 hp bigtwin Tim Frank said: I've seen a number of posts that suggest 20:1 as the correct mix for that vintage. Click to expand... Its 24:1. At least, that's what OMC built it to run on. Plug gap is .030" Coils of that vintage are always bad even if they spark. Check them when you clean and set the point gap (.020").
Re: gas/oil ratio for 56 30 hp bigtwin Tim Frank said: I've seen a number of posts that suggest 20:1 as the correct mix for that vintage. Click to expand... Its 24:1. At least, that's what OMC built it to run on. Plug gap is .030" Coils of that vintage are always bad even if they spark. Check them when you clean and set the point gap (.020").
R R.Johnson Rear Admiral Joined Sep 24, 2003 Messages 4,446 May 27, 2009 #6 Re: gas/oil ratio for 56 30 hp bigtwin wbeaton: That would be 30# non- detergent, and leaded gasoline. I wonder what OMC did to a roller bearing that it needed only half as much oil.
Re: gas/oil ratio for 56 30 hp bigtwin wbeaton: That would be 30# non- detergent, and leaded gasoline. I wonder what OMC did to a roller bearing that it needed only half as much oil.
