what should the compression be on 1975 85 hp Evinrude. Thanks
B bufordg Cadet Joined Oct 18, 2012 Messages 28 Jul 27, 2013 #1 what should the compression be on 1975 85 hp Evinrude. Thanks
Joe Reeves Supreme Mariner Joined Feb 24, 2002 Messages 13,262 Jul 27, 2013 #2 Re: Compression on 85 Evinrude Usually in the area of about 100+ psi and even on all cylinders. What readings do you have?
Re: Compression on 85 Evinrude Usually in the area of about 100+ psi and even on all cylinders. What readings do you have?
B bufordg Cadet Joined Oct 18, 2012 Messages 28 Jul 27, 2013 #3 Re: Compression on 85 Evinrude around 90 and motor has not been run since 07 checked it before we started it Last edited: Jul 27, 2013
Re: Compression on 85 Evinrude around 90 and motor has not been run since 07 checked it before we started it
D durban Master Chief Petty Officer Joined May 27, 2011 Messages 894 Jul 27, 2013 #4 Re: Compression on 85 Evinrude the manual says 92 .6 cubic inch per piston = 1 195 200.00psi per1000 feet/psi/1000 feet
Re: Compression on 85 Evinrude the manual says 92 .6 cubic inch per piston = 1 195 200.00psi per1000 feet/psi/1000 feet
Joe Reeves Supreme Mariner Joined Feb 24, 2002 Messages 13,262 Jul 28, 2013 #5 Re: Compression on 85 Evinrude durban said: the manual says 92 .6 cubic inch per piston = 1 195 200.00psi per1000 feet/psi/1000 feet Click to expand... What! Last edited: Jul 28, 2013
Re: Compression on 85 Evinrude durban said: the manual says 92 .6 cubic inch per piston = 1 195 200.00psi per1000 feet/psi/1000 feet Click to expand... What!
E emdsapmgr Supreme Mariner Joined Dec 9, 2005 Messages 11,551 Jul 28, 2013 #6 Re: Compression on 85 Evinrude Normal compression would be in the range of 125 psi when new. Those early crossflows run higher than later models.
Re: Compression on 85 Evinrude Normal compression would be in the range of 125 psi when new. Those early crossflows run higher than later models.
B boobie Supreme Mariner Joined Nov 5, 2009 Messages 20,826 Jul 28, 2013 #7 Re: Compression on 85 Evinrude Joe, I really agree with the " What " ??
D durban Master Chief Petty Officer Joined May 27, 2011 Messages 894 Jul 29, 2013 #8 Re: Compression on 85 Evinrude boobie said: Joe, I really agree with the " What " ?? Click to expand... :laugh:
Re: Compression on 85 Evinrude boobie said: Joe, I really agree with the " What " ?? Click to expand... :laugh:
L laotou Seaman Joined Jul 8, 2011 Messages 54 Jul 29, 2013 #9 Re: Compression on 85 Evinrude Mine is 76 85HP. Compression is 92 - 95 psi.
