lead went away from here about 30 yrs ago. im thinking that its had unleaded gas for about 30 yrs.i guess there could be some residual lead left but not 600 ppm worth.
1963 Chrysler Newport 361 v8 AXT 10w-40 1yr/1k m
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We had leaded fuel here probably up to about twenty five years ago, still a long time.
I'd bet, though, that this car did 90% of its miles on leaded fuel.
It probably wasn't driven much after the mid 'eighties.
If the bearings were the main source of lead, I'd expect to see high tin and copper and we don't.
I'd bet, though, that this car did 90% of its miles on leaded fuel.
It probably wasn't driven much after the mid 'eighties.
If the bearings were the main source of lead, I'd expect to see high tin and copper and we don't.
Originally Posted By: Chris142
lead went away from here about 30 yrs ago. im thinking that its had unleaded gas for about 30 yrs.i guess there could be some residual lead left but not 600 ppm worth.
Around here, it was available right up to the end in 94-95. I last bought some in 92 for our old Catalina. It's also common to find 5-10 pounds of TEL in the bottom of old gas tanks. Not sure if it slowly redissolves into modern fuels though. I'm sure I have some in that tank, based on the spark plugs I removed. I haven't seen deposits like that in decades.
Originally Posted By: fdcg27
We had leaded fuel here probably up to about twenty five years ago, still a long time.
I'd bet, though, that this car did 90% of its miles on leaded fuel.
It probably wasn't driven much after the mid 'eighties.
If the bearings were the main source of lead, I'd expect to see high tin and copper and we don't.
Which is good as my main reason for buying this car was for the engine. This "economy tune" for the day runs excellent on 87 pump gas. It would be great for my Fury if/when the 318 dies. This car was sold as parts due to rust, but turned out to be easily fixed into a decent driver. These 361's are merely de-bored 383's and make excellent "virgin-bore" 383's.
lead went away from here about 30 yrs ago. im thinking that its had unleaded gas for about 30 yrs.i guess there could be some residual lead left but not 600 ppm worth.
Around here, it was available right up to the end in 94-95. I last bought some in 92 for our old Catalina. It's also common to find 5-10 pounds of TEL in the bottom of old gas tanks. Not sure if it slowly redissolves into modern fuels though. I'm sure I have some in that tank, based on the spark plugs I removed. I haven't seen deposits like that in decades.
Originally Posted By: fdcg27
We had leaded fuel here probably up to about twenty five years ago, still a long time.
I'd bet, though, that this car did 90% of its miles on leaded fuel.
It probably wasn't driven much after the mid 'eighties.
If the bearings were the main source of lead, I'd expect to see high tin and copper and we don't.
Which is good as my main reason for buying this car was for the engine. This "economy tune" for the day runs excellent on 87 pump gas. It would be great for my Fury if/when the 318 dies. This car was sold as parts due to rust, but turned out to be easily fixed into a decent driver. These 361's are merely de-bored 383's and make excellent "virgin-bore" 383's.
Some people buy fuel additives to help engines that used leaded gasoline. It would put some ash between the valves and seats, and some also raise octane.
Has this engine ever had the cylinder heads rebuilt at sometime in its life? If so, someone probably installed new valve seats that resist wear when using unleaded fuel in an engine not built for it.
Has this engine ever had the cylinder heads rebuilt at sometime in its life? If so, someone probably installed new valve seats that resist wear when using unleaded fuel in an engine not built for it.
Originally Posted By: artificialist
Some people buy fuel additives to help engines that used leaded gasoline. It would put some ash between the valves and seats, and some also raise octane.
Has this engine ever had the cylinder heads rebuilt at sometime in its life? If so, someone probably installed new valve seats that resist wear when using unleaded fuel in an engine not built for it.
I don't believe the heads have ever been off the car. The original seat surfaces were heat treated when made and unless you beat them or had a "valve-job", they worked fairly well. The only older engines I've had to install seats in were on cars that had previous valve jobs done. Though I will admit to driving "younger" in these cars.
I do have some of the "Lead Substitute" around but use it very seldom.
Some people buy fuel additives to help engines that used leaded gasoline. It would put some ash between the valves and seats, and some also raise octane.
Has this engine ever had the cylinder heads rebuilt at sometime in its life? If so, someone probably installed new valve seats that resist wear when using unleaded fuel in an engine not built for it.
I don't believe the heads have ever been off the car. The original seat surfaces were heat treated when made and unless you beat them or had a "valve-job", they worked fairly well. The only older engines I've had to install seats in were on cars that had previous valve jobs done. Though I will admit to driving "younger" in these cars.
I do have some of the "Lead Substitute" around but use it very seldom.
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