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12-05-2012, 12:02 PM | #21 |
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Join Date: Sep 2010
Location: Tucson, AZ
Posts: 72
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Re: Cheap Internal Upgrades?
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12-05-2012, 03:32 PM | #22 |
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Join Date: May 2010
Location: Chester Vt
Posts: 8,861
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Re: Cheap Internal Upgrades?
A very inexpensive O2 sensor and display can be had from Cyberdyne gauges. This unit uses a bar graph to display the air/fuel ratio. You can tune to your engine with this but it's not as accurate as the wide band unit we use. The NGK unit goes up to 16:1, but our new unit goes up to 22:1 A/F. At present we're running in the high 15's low 16's.. You have to pay attention to your timing curve and engine temperature. Burning ALL the fues eliminates cylinder ware due to the lack of un burnt gas wiping down your cyliders and improve wring life. With the present gas It's hard to read plugs.
When building an engine you should take advantage of all the new ideas the Auto manufactures have come up with over the past 50 years and apply them to our trusty Flathead s. Us idiots have perseverance and get better mileage.. |
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12-05-2012, 06:30 PM | #23 | |
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Join Date: Apr 2012
Location: Goodyear A.Z. (Phoenix Suburb)
Posts: 61
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Re: Cheap Internal Upgrades?
Quote:
I second that! Excellent info especially to noobs like myself who are trying to learn as much as possible about these engines. |
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12-05-2012, 06:36 PM | #24 |
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Join Date: Apr 2012
Location: Goodyear A.Z. (Phoenix Suburb)
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Re: Cheap Internal Upgrades?
I was just making a point. An O2 sensor is an excellent tuning tool whether it be on your minivan or your Flathead. I'd rather have hard data that helps me tune my engine to get the maximum performance and economy out of it than just guessing at it. Telling someone they are an idiot for using a tried and true method for getting the maximum performance from their engine is complete ignorance. I don't presume to know you or your knowledge on the subject of Flathead tuning, I just think it was an ignorant thing to say when someone is simply asking for the expertise of the other users on this forum.
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12-05-2012, 07:47 PM | #25 |
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Join Date: May 2010
Location: H.B. So. Calif
Posts: 411
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Re: Cheap Internal Upgrades?
O.K. If I would like to install a A/F gauge and sensor. How do I do it and how would I use it? I am very interest in the advantages of the use and how to set it up. Wiring and etc.
Thanks Bill S |
12-05-2012, 10:00 PM | #26 |
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Location: Chester Vt
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Re: Cheap Internal Upgrades?
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12-05-2012, 11:40 PM | #27 |
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Join Date: May 2010
Location: Mill Valley,Ca.
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Re: Cheap Internal Upgrades?
I'ld like to know about the 02 sensor and A/F gauge as an addition to my flathead. Will keep an eye on this thread... Thanks for the thought.
Karl |
12-06-2012, 12:27 AM | #28 | |
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Location: Santee, California
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Re: Cheap Internal Upgrades?
Quote:
Well Ron, I'm pleased as punch your colon is still working. |
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12-06-2012, 01:48 AM | #29 |
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Location: NorCal
Posts: 2,617
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Re: Cheap Internal Upgrades?
As many have said, an AF gauge is an excellent tool. Essentially, a bung is welded into the exhaust head-pipe on one side (or both). An O2 sensor is then screwed into the bung and an AF meter is then hooked up for tuning. When not in use, a plug is screwed into the bung, and no-one is the wiser. Some people leave it installed as a means of constantly monitoring the engines' fuel mixtures.
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12-06-2012, 04:25 AM | #30 |
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Join Date: May 2010
Location: Auburn, MA
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Re: Cheap Internal Upgrades?
Ron, The high 15s low 16s sounds a little lean. From what I have been reading the 14s seem better for cruising and WOT was in the 12s low 13s. Of cours all the info I found was for modern engines and may the flathead design requires something different.
Anyone here have a suggestion on which model to buy? Also how how can you tell if the problem is timing or misture when an adjustment needs to be made?
__________________
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12-06-2012, 03:59 PM | #31 |
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Join Date: May 2010
Location: Chester Vt
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Re: Cheap Internal Upgrades?
I have an NGK unit, however Richard bought another unit that JWL recomended and it works better has 22:1 hi range. Tuning for economy is our latest project and you have to keep doing things to improve or dis prove your last modification.That's why airplanes are better than the wrights. Richard made ou a monitor that displays A/f, RPN, Vacuum and timing as you drive the car, this is then recorded on video tape for later observation. These tests show the affects of all driving conditions on the ignition and fuel mixtures.. We then post our findings on the barn, so you don't have to do this. After all somebody gota do it or we'd still be walking.
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12-06-2012, 06:19 PM | #32 |
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Location: Napier, New Zealand
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Re: Cheap Internal Upgrades?
Give that man a medal!
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12-06-2012, 06:33 PM | #33 |
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Location: NorCal
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Re: Cheap Internal Upgrades?
The unit I bought was from AEM. It has both digital and analog readouts
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