6/1 vs. 8/1 TO-35

greenbank · Jul 4, 2008

My tractor has long since lost any warning plates and decals, if it ever had any...but then again, it may be 6/1 compression.

Were the bulk of TO-35's 6/1, or is there another external clue I can find that will tell me what my engine is? I'm setting timing and such in prep to work on the governor and would like to get it right.

I guess at worst I could pull a plug and see what the piston looks like. Are 6/1 flat and 8/1 domed, or 6/1 dished and 8/1 flat, or...?

Thanks!

Richard L · Jul 4, 2008

Green- How close is the TO to the FE? John (UK) has a piece in the archives that the two ratios of the FE are 6.0:1 and 6.6:1. I only looked at about 3 of the posts but there were a lot of them. If you open an email I can tell you how to check the archives. Richard

John (UK) · Jul 5, 2008

The Continental Engine in the TO35 has no similarities to the Standard Engine in the FE35 regarding compression. I don't have any data for the Z134 in the TO35 but I have a setting of 6 deg BTDC for the ignition timing, this was also quoted as 5 deg by someone else and they assured me that that was correct too, you will soon know if the 6 deg is too far advanced as it will knock. I have only seen 6:1 compression ratio quoted but there could be others. The parts list gives two alternatives for the pistons but doesn't say what the compression was they were used for...John

6/1 vs. 8/1 TO-35

greenbank

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Richard L

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John (UK)

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