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Timing issue? #1322963 10/19/12 10:06 PM 10/19/12 10:06 PM
Joined: Jan 2007 Posts: 3,695 nc E emarine01 OP master
emarine01 OP master E Joined: Jan 2007 Posts: 3,695 nc	Last winter I scribed new degree marks on my balancer due to the old ones were sand blasted off mud racing, In doing this I was off 5 @ 35, was 30 not 35,... So I have been running @ 28 all season not 33, All in all the engine ran strong but could not ET as good as last year down .15 average, Are there any consequences from running 5 retarded? Engine is a 4 inch stroke small block 12 to 1 on 100 octane leaded fuel @ 6800 rpm

Re: Timing issue? [Re: emarine01] #1322964 10/19/12 10:29 PM 10/19/12 10:29 PM
Joined: Aug 2003 Posts: 43,269 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,269 Bend,OR USA	Quote: Last winter I scribed new degree marks on my balancer due to the old ones were sand blasted off mud racing, In doing this I was off 5 @ 35, was 30 not 35,... So I have been running @ 28 all season not 33, All in all the engine ran strong but could not ET as good as last year down .15 average, Are there any consequences from running 5 retarded? The consequence, as you already know, is loss of power Also they(most motors on gasoline) tend to run hotter when the timing is retarded Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Timing issue? [Re: Cab_Burge] #1322965 10/19/12 11:29 PM 10/19/12 11:29 PM
Joined: Jan 2007 Posts: 3,695 nc E emarine01 OP master
emarine01 OP master E Joined: Jan 2007 Posts: 3,695 nc	Would the extra heat show up in the exhaust temp?

Re: Timing issue? [Re: emarine01] #1322966 10/20/12 12:15 AM 10/20/12 12:15 AM
Joined: Jan 2007 Posts: 8,043 Mt Morris Michigan mopar dave master
mopar dave master Joined: Jan 2007 Posts: 8,043 Mt Morris Michigan	yes,the exhaust runs hotter. i noticed this on my 408. had the timing issue with the timing retarding on accelleration. header coating tuned dark. http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: Timing issue? [Re: emarine01] #1322967 10/20/12 01:03 AM 10/20/12 01:03 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Would the extra heat show up in the exhaust temp? Yes ... part of the fuel is burnt in the exhaust

Re: Timing issue? [Re: mopar dave] #1322968 10/20/12 01:11 AM 10/20/12 01:11 AM
Joined: Jan 2007 Posts: 3,695 nc E emarine01 OP master
emarine01 OP master E Joined: Jan 2007 Posts: 3,695 nc	My tubes look dark about 15" from the head, I thought it was cheep coating, I put a new balancer on today and turned the timing back up to 33, seemed to like 33 on 100LL in the past, I am looking forward to next week to butt dyno the change, I hope I didn't cook any exhaust valves We an 9 outings messed up, Seem to have lost 300 rpm off the top this year also, I wonder if the 5 degrees will pick it back up?

Re: Timing issue? [Re: emarine01] #1322969 10/20/12 10:29 AM 10/20/12 10:29 AM
Joined: Jan 2007 Posts: 8,043 Mt Morris Michigan mopar dave master
mopar dave master Joined: Jan 2007 Posts: 8,043 Mt Morris Michigan	thats where mine turned dark. 5* should make an improvement. http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

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