BUSY BOLTERS Are you one?  The Shop Area
continues to pull in the most views on the Stovebolt. In August alone there were over 22,000 views in those 13 forums.
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Jul 21st, 2025 | | | | Joined: Jul 2012 Posts: 31 'Bolter | | 'Bolter Joined: Jul 2012 Posts: 31 | I bought a 235 yesterday (casting #3835911). After cleaning the crud off I found a Jasper rebuild sticker on it. No ID # on the sticker so Jasper couldn't tell me anything they did to it or when. The oil pan is a bluish-green and in pretty good shape. Is there any way to tell without taking it apart if it has harden valve seats or should I just add lead at fill-up just to be on the safe side? | | | | | Joined: Aug 2012 Posts: 402 Shop Shark | | Shop Shark Joined: Aug 2012 Posts: 402 | no, you cant tell if there seats in there unless you take it apart. you can look at the tips of the exhaust valves and see if they are all in line with each other, that might tell you something. but maybe not, depends on the guy doing the valve job.
http://s1055.photobucket.com/user/baldybenny/library/ 1936 1.5 wrecker,1937 gmc coe,1939 Chevrolet coe,1942 4x4 coe, 1942 coe,1946 dump,1947 2 ton dump,another 1947 2 ton dump,1950 coe,1967 c30,1937 cat 22,1936 Chevrolet 5 window foremans coupe, 1914 ford speedster.
| | | | | Joined: Aug 2012 Posts: 402 Shop Shark | | Shop Shark Joined: Aug 2012 Posts: 402 | also if this engine has been running lately and runs ok now, i would have to say that the engine was running on unleaded for some time.
http://s1055.photobucket.com/user/baldybenny/library/ 1936 1.5 wrecker,1937 gmc coe,1939 Chevrolet coe,1942 4x4 coe, 1942 coe,1946 dump,1947 2 ton dump,another 1947 2 ton dump,1950 coe,1967 c30,1937 cat 22,1936 Chevrolet 5 window foremans coupe, 1914 ford speedster.
| | | | | Joined: Aug 2011 Posts: 835 Shop Shark | | Shop Shark Joined: Aug 2011 Posts: 835 | I don't think you need to worry about it. Been running unleaded in my 235 since they came out with it. Still running strong.
Kurt | | | | | Joined: Jul 2012 Posts: 31 'Bolter | | 'Bolter Joined: Jul 2012 Posts: 31 | Thanks guys. I won't fire her up till next spring, still have a little frame work and get the cab over to my body guy. | | | | | Joined: Feb 2004 Posts: 28,674 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 28,674 | Unless you're running it on Propane or some other kind of "dry" fuel, don't worry about hardened seats. Back when the swap to low-lead and no-lead fuel first happened, we had some problems with exhaust valve seat erosion, but for some reason it hasn't happened much lately. Maybe they changed the fuel blend in some way.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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| | | | | Joined: Aug 2005 Posts: 6,383 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,383 | I've been running unleaded in "leaded" engines for years without a problem.
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