Guest Posted October 4, 2015 Share Posted October 4, 2015 (edited) As you know, there are various ways of calculating what normal compression is for specific engines, based on their compression ratio ( if known) , etc. Some Dykes manuals have a range, as do some types of compression test gauges. Attached is the first chart I have found that lists "normal" values for SPECIFIC CARS of the late 1920's and 1930's. It was found among some papers that came with a Cord that I recently purchased. I hope that forum users will find it of some value. I was surprised at how low the values were for some cars. ( less than 80 psi ). This may even give some owners of those cars a little more peace of mind. Click on it and zoom if required and it will be easily readable. Edited October 6, 2015 by Guest (see edit history) Link to comment Share on other sites More sharing options...
Friartuck Posted October 4, 2015 Share Posted October 4, 2015 Yes this chart is helpful. Thanks for sharing. Link to comment Share on other sites More sharing options...
keiser31 Posted October 5, 2015 Share Posted October 5, 2015 Unfortunately, the computer will not let me save the chart and it is a bit blurry. Could you please tell me what it says for the 1931 Dodge 6? Thanks. Link to comment Share on other sites More sharing options...
Guest Posted October 5, 2015 Share Posted October 5, 2015 (edited) Unfortunately, the computer will not let me save the chart and it is a bit blurry. Could you please tell me what it says for the 1931 Dodge 6? Thanks. 1930-31 D-D-6 80 psi1931 6 and 8 late series 86 psi Edited October 5, 2015 by Guest (see edit history) Link to comment Share on other sites More sharing options...
keiser31 Posted October 5, 2015 Share Posted October 5, 2015 Thank you VERY much! Link to comment Share on other sites More sharing options...
Bud Tierney Posted October 6, 2015 Share Posted October 6, 2015 Anything with the chart that gave its source?? Link to comment Share on other sites More sharing options...
Guest Posted October 6, 2015 Share Posted October 6, 2015 (edited) Anything with the chart that gave its source??No. One photocopied page is all I have. Edited October 6, 2015 by Guest (see edit history) Link to comment Share on other sites More sharing options...
Curti Posted October 14, 2015 Share Posted October 14, 2015 Ya, I tried to save it off too, but couldn't. Link to comment Share on other sites More sharing options...
Ben Bruce aka First Born Posted October 14, 2015 Share Posted October 14, 2015 Well , gee whiz, I just printed it. Ben Link to comment Share on other sites More sharing options...
wmsue Posted October 14, 2015 Share Posted October 14, 2015 Here's what worked for me.Open the attachment to view it. On the bottom right corner of the chart is a SAVE and a CLOSE button. Click on the save button and the chart opens in a new tab. Right click the newly opened chart and one of your choices is "save image as". This will let you save the image to where ever you like on your computer. Hope this helps. Bill Link to comment Share on other sites More sharing options...
Curti Posted October 14, 2015 Share Posted October 14, 2015 Thanks Bill, that worked GREAT !! Link to comment Share on other sites More sharing options...
Spinneyhill Posted October 2, 2016 Share Posted October 2, 2016 I don't get that save button. If I click on the thumbnail it opens in a larger black background window with an X to close and a Full Screen button on bottom left. Right click in the middle of the picture and select Save Image As and you are good to go. Link to comment Share on other sites More sharing options...
hwellens Posted October 2, 2016 Share Posted October 2, 2016 On 10/4/2015 at 2:01 PM, 31 Caddy said: As you know, there are various ways of calculating what normal compression is for specific engines, based on their compression ratio ( if known) , etc. Some Dykes manuals have a range, as do some types of compression test gauges. Attached is the first chart I have found that lists "normal" values for SPECIFIC CARS of the late 1920's and 1930's. It was found among some papers that came with a Cord that I recently purchased. I hope that forum users will find it of some value. I was surprised at how low the values were for some cars. ( less than 80 psi ). This may even give some owners of those cars a little more peace of mind. Click on it and zoom if required and it will be easily readable. Can this be posted at a higher resolution than a thumbnail picture? Link to comment Share on other sites More sharing options...
wmsue Posted October 2, 2016 Share Posted October 2, 2016 Try this one. Link to comment Share on other sites More sharing options...
hwellens Posted October 6, 2016 Share Posted October 6, 2016 This is better. I guess the problem was it is a picture in jpeg. Usually it is better to scan in pdf for better results. Link to comment Share on other sites More sharing options...
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