292 valve job
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From: Montana
292 valve job
Here's the poop,
I have a '63 f250 with a 292. I changed the plugs today, 2 of them are very white. This makes me believe I may have a couple burnt valves. After I confirm this, what suggestions would you have for doing this valve job?
The engine has about 60K original miles on it....runs quite well. Bottom end seems to be good, uses no oil, no smoke, etc.
I dont have a need, nor the extra money to be fancy. Given the opportunity to get a little better performance, while it is apart, I will go for it.
Thanks in advance for your input.
I have a '63 f250 with a 292. I changed the plugs today, 2 of them are very white. This makes me believe I may have a couple burnt valves. After I confirm this, what suggestions would you have for doing this valve job?
The engine has about 60K original miles on it....runs quite well. Bottom end seems to be good, uses no oil, no smoke, etc.
I dont have a need, nor the extra money to be fancy. Given the opportunity to get a little better performance, while it is apart, I will go for it.
Thanks in advance for your input.
Elder User
Joined: Dec 2002
Posts: 713
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From: Houston U.S.
Originally Posted by opus
Here's the poop,
I have a '63 f250 with a 292. I changed the plugs today, 2 of them are very white. This makes me believe I may have a couple burnt valves. After I confirm this, what suggestions would you have for doing this valve job?
The engine has about 60K original miles on it....runs quite well. Bottom end seems to be good, uses no oil, no smoke, etc.
I dont have a need, nor the extra money to be fancy. Given the opportunity to get a little better performance, while it is apart, I will go for it.
Thanks in advance for your input.
I have a '63 f250 with a 292. I changed the plugs today, 2 of them are very white. This makes me believe I may have a couple burnt valves. After I confirm this, what suggestions would you have for doing this valve job?
The engine has about 60K original miles on it....runs quite well. Bottom end seems to be good, uses no oil, no smoke, etc.
I dont have a need, nor the extra money to be fancy. Given the opportunity to get a little better performance, while it is apart, I will go for it.
Thanks in advance for your input.
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Senior User
Joined: May 2004
Posts: 184
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From: Montana
I will check and see what plugs were actually in it. Found it odd to have 2 cyl's runing like that. I could so a vacumm test.....if I could find anyone around here with a vacumm gauge. Although I am prety sure I have a couple burnt valves.
Tell me about the above valve sizes, are they the stock size and would those be a good set of heads to use (casting number)? I may have a shot a getting a set that have just been rebuilt, for a good price. Certainly cheaper than having the valves done on mine.
If those heads wont work, I will get mine done. Would like to know what I should have done to the heads to improve a little as well.
Tell me about the above valve sizes, are they the stock size and would those be a good set of heads to use (casting number)? I may have a shot a getting a set that have just been rebuilt, for a good price. Certainly cheaper than having the valves done on mine.
If those heads wont work, I will get mine done. Would like to know what I should have done to the heads to improve a little as well.
Last edited by opus; Dec 19, 2004 at 10:04 AM.
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From: Boise, Idaho
ECL heads have bigger intake valves than the C1TE heads that you likely have. If those heads are ECL-B or ECL-C, grab 'em for sure. Look at John Mummert's web site to confirm my data.
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From: Montana
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From: Boise, Idaho
As I'm sure you know, that picture is from the combustion chamber surface of the head. The other side usually has another letter that would have been an A, B. or C.
The other place that there would be a marking is one of either; between the exhaust ports, or on the underside of the water port.
If you clicked on the link to John Mummert's site, you'd see what I saw - the ECL-A on a 272 was rated at 7.6:1 CR. The ECL-B and C on a 292 was about 8.5:1.
Note that these are usually rather optomistic ratios. In real life they're usually much lower. My point is that the 272 heads with the "7.6:1" ratio would actually give a 292 about 7.4:1 due to gasket thickness and deck height.
The other place that there would be a marking is one of either; between the exhaust ports, or on the underside of the water port.
If you clicked on the link to John Mummert's site, you'd see what I saw - the ECL-A on a 272 was rated at 7.6:1 CR. The ECL-B and C on a 292 was about 8.5:1.
Note that these are usually rather optomistic ratios. In real life they're usually much lower. My point is that the 272 heads with the "7.6:1" ratio would actually give a 292 about 7.4:1 due to gasket thickness and deck height.
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Originally Posted by pcmenten
As I'm sure you know,
I will check, thanks.
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Just because 2 spark plugs are white may not mean you have burnt valves. You may want to check the valve adjustment on those 2 cylinders first. If you find that their is no lash then they be burnt but may be just out of adjustment. I would also do a compresshion test before I pull a good engine apart.
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From: Montana
Valve lash is good....at least it was a year ago when I did them. The plugs were quite old, not sure that matters. I certainly am not going to pull it apart until I confirm it.
Think I will try and find a compression gauge.
Think I will try and find a compression gauge.
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Here is what I got regarding the heads I was looking at:
"Hi, these heads have nothing on the Ex side, but they say "ECL 6090-A" next to the valves. I can also tell you they came off of a 272 in a 1955 F-100."
What are they worth, being rebuilt and all, with 1.78 intake, 1.50 exhaust valves?
"Hi, these heads have nothing on the Ex side, but they say "ECL 6090-A" next to the valves. I can also tell you they came off of a 272 in a 1955 F-100."
What are they worth, being rebuilt and all, with 1.78 intake, 1.50 exhaust valves?
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