Thompson1276 256 #1 Posted July 30, 2022 I’m restoring a 1966 1276 I found the paint had lead in it was getting dizzy just sanding that’s when I thought about it , should I put Lead additives in my gas since it’s when lead gas was still in use , it’s a K301ST from 66 also it says use 90 octane but I only can get 82 and 87 at my local pump will that matter also 1 Share this post Link to post Share on other sites
squonk 41,145 #2 Posted July 30, 2022 From Brian miller's site: Lead in gas was actually meant for older (pre-1970) automotive engines because they had soft cast iron valve seats. The cylinder heads were made of cast iron and the seats were cut or ground directly into the head with no hardened inserts. These seats was not heat-treated and would wear when no lead is present in gas. However, the later model automobile engine valve seats (1971-present) are heat-treated and last a lot longer. The seats were still cut or ground in the [cast iron] heads, but are heat-treated. The aluminum automotive heads have heat-treated steel inserts for valve seats. And virtually ALL small engine valve seats come from the factory heat-treated. They are steel inserts, and rarely wear when no lead is present in gas. " " 2 Share this post Link to post Share on other sites
SylvanLakeWH 25,596 #3 Posted July 30, 2022 23 minutes ago, Thompson1276 said: was getting dizzy just sanding Hope you were wearing an appropriate mask…? 3 1 Share this post Link to post Share on other sites
Thompson1276 256 #4 Posted July 30, 2022 18 minutes ago, SylvanLakeWH said: Hope you were wearing an appropriate mask…? No mask man I been around it for so long I never seen a reason for one at this point 1 1 Share this post Link to post Share on other sites
ebinmaine 67,570 #5 Posted July 30, 2022 2 minutes ago, Thompson1276 said: No mask man I been around it for so long I never seen a reason for one at this point With all possible due respect. That is purely incorrect. It's never too late to start taking appropriate care of your self and those around you. Use an appropriate mask an area ventilation. 5 4 1 Share this post Link to post Share on other sites
bc.gold 3,403 #6 Posted July 31, 2022 17 hours ago, squonk said: From Brian miller's site: Lead in gas was actually meant for older (pre-1970) automotive engines because they had soft cast iron valve seats. The cylinder heads were made of cast iron and the seats were cut or ground directly into the head with no hardened inserts. These seats was not heat-treated and would wear when no lead is present in gas. However, the later model automobile engine valve seats (1971-present) are heat-treated and last a lot longer. The seats were still cut or ground in the [cast iron] heads, but are heat-treated. The aluminum automotive heads have heat-treated steel inserts for valve seats. And virtually ALL small engine valve seats come from the factory heat-treated. They are steel inserts, and rarely wear when no lead is present in gas. " " The info from Millers site is totally incorrect, lead was added to gasoline to prevent engine knock a condition known to destroy engines. The Man Who Killed Millions and Saved Billions. 1 Share this post Link to post Share on other sites
peter lena 8,634 #7 Posted July 31, 2022 @Thompson1276 worked in a very macho shop , typically lots of related workers , millwrights , pipefitters / welders , electronic techs , instrument techs, would scoff at any available protection offered . just did not make sense to me , you could see and smell the environment you were entering, yet the macho way was to tough it out . always had a dust mask in my hard hat webbing, always had ear plugs or available, or " ear muffs " in a high , intense level situation . and would not hesitate to suit up to the next stage if needed . even today , always have the push in earplugs in my pocket , very simple shut down to any confining noise situation . just my own experience , but when you can see your air intake , protect yourself, been there , pete 3 Share this post Link to post Share on other sites
