Air fuel, Mystery or not |
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Air fuel, Mystery or not |
worn |
Oct 1 2014, 07:03 PM
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#1
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can't remember Group: Members Posts: 3,156 Joined: 3-June 11 From: Madison, WI Member No.: 13,152 Region Association: Upper MidWest |
As one can derive from following these pages I have rebuilt a 2056. After that I have had problems with cooling. On the trip to ockteenerfest I was able to make close to all out full power and still stay below 400 on the cht. But, it was at an air fuel ratio of between 10-11. Seems awfully rich to me, but I am a chemist looking for a perfect match. Fuel mileage went by the board but I wasn't driving 55 worrying that the engine would over heat. Yeah, it is stock FI with a webcam.
So,is this where I am going to tune around, or is it richer than it should be. Appreciate the wisdom. Also, when you drive 900 miles and have your alternator pulley separate in two, this is the group that will save your bacon. Thanks. |
gereed75 |
Oct 2 2014, 07:44 AM
Post
#2
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Senior Member Group: Members Posts: 1,247 Joined: 19-March 13 From: Pittsburgh PA Member No.: 15,674 Region Association: North East States |
As one can derive from following these pages I have rebuilt a 2056. After that I have had problems with cooling. On the trip to ockteenerfest I was able to make close to all out full power and still stay below 400 on the cht. But, it was at an air fuel ratio of between 10-11. Seems awfully rich to me, but I am a chemist looking for a perfect match. Fuel mileage went by the board but I wasn't driving 55 worrying that the engine would over heat. Yeah, it is stock FI with a webcam. So,is this where I am going to tune around, or is it richer than it should be. Appreciate the wisdom. Also, when you drive 900 miles and have your alternator pulley separate in two, this is the group that will save your bacon. Thanks. Timing is very critical to engine temps. Too much advance will cause high temps. Especially at higher compression ratios one or two degrees matter. Not sure what the specs are for your engine but check it |
worn |
Oct 2 2014, 01:54 PM
Post
#3
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can't remember Group: Members Posts: 3,156 Joined: 3-June 11 From: Madison, WI Member No.: 13,152 Region Association: Upper MidWest |
As one can derive from following these pages I have rebuilt a 2056. After that I have had problems with cooling. On the trip to ockteenerfest I was able to make close to all out full power and still stay below 400 on the cht. But, it was at an air fuel ratio of between 10-11. Seems awfully rich to me, but I am a chemist looking for a perfect match. Fuel mileage went by the board but I wasn't driving 55 worrying that the engine would over heat. Yeah, it is stock FI with a webcam. So,is this where I am going to tune around, or is it richer than it should be. Appreciate the wisdom. Also, when you drive 900 miles and have your alternator pulley separate in two, this is the group that will save your bacon. Thanks. Timing is very critical to engine temps. Too much advance will cause high temps. Especially at higher compression ratios one or two degrees matter. Not sure what the specs are for your engine but check it I have tried timing stock and then tweaked from there. A lot of people say retarded spark is the one to watch for... (IMG:style_emoticons/default/confused24.gif) I tried to find a sweat spot but am open to suggestion. Real question is have I solved the problem (for the first time) in an appropriate way. People say with an altered cam you need carbs, which can be a means for adding fuel. Did I arrive at the same place? |
Bob L. |
Oct 2 2014, 05:32 PM
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#4
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Senior Member Group: Members Posts: 847 Joined: 7-August 11 From: Austin TX Member No.: 13,411 Region Association: Southwest Region |
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