View Poll Results: What fuel are you running?
I use unleaded with unhardened seats and believe it has caused no issues.
9
81.82%
I run unleaded with unhardened seats and believe it has caused issues.
1
9.09%
I add lead because I have had problems with unleaded in the past.
0
0%
I add lead, but haven't experienced trouble with unleaded in the past.
1
9.09%
Voters: 11. You may not vote on this poll
What are you running?
Thread Starter
|
Senior User
Joined: Jun 2018
Posts: 166
Likes: 2
From: Northern Colorado
What are you running?
Lots of threads ask "Can I run Unleaded in my old engine with stock valve seats?" What I'd like to know is what are you running, not what can you run.
Please don't answer if you know you have hardened valve seats.
Please don't answer if you know you have hardened valve seats.
Fleet Mechanic
Joined: Aug 2016
Posts: 1,480
Likes: 6
From: Great White North
I cannot resist this one. Charles N Pogue back in the late twenties early thirties invented a carb that delivered 100mpg. It was advertised and sold and then they stopped working and he had to refund. They stopped working right around the same time as lead being added. Humm? Try researching carbon cracking to get the truth!
Logistics Pro
Joined: May 2015
Posts: 4,469
Likes: 963
From: Tri Cities, TN
I think most of the, "unleaded destroys exhaust seats" came about in the 1970's before the refiners got a handle on how to make the stuff. Remember the petroleum industry resisted the switch to unleaded more than the auto industry did. I've taken apart a bunch of Ford engines mostly Cleveland's and 429's. I've only ran across one engine that had severely recessed exhaust seats and that was a 429 SCJ that had been driven by a teenager putting in the cheapest gas he could find. I run unleaded 91 octane in my Cleveland without hard seats with no problems but I built it with 7.73-1 dynamic compression ratio. It's 10-1 static. And that 7.73-1 is assuming 100% VE "which it isn't" so in reality it's lower than that.
Trending Topics
Cargo Master
Joined: Apr 2001
Posts: 2,697
Likes: 46
From: Vancouver
Lead also increased the octane rating or, more specifically, resistance to detonation. Alcohol (ethanol or methanol) does also , but in my opinion that is not why it is in our fuel.
I drive several miles past my local gas station to get ethanol-free fuel. It is expensive (because it is 92 octane, which my truck doesn't need), but it doesn't damage the rubber parts in the fuel system.
Eric
I drive several miles past my local gas station to get ethanol-free fuel. It is expensive (because it is 92 octane, which my truck doesn't need), but it doesn't damage the rubber parts in the fuel system.
Eric
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
Logistics Pro
Joined: Feb 2011
Posts: 3,522
Likes: 11
From: Townsend, MT
I cannot resist this one. Charles N Pogue back in the late twenties early thirties invented a carb that delivered 100mpg. It was advertised and sold and then they stopped working and he had to refund. They stopped working right around the same time as lead being added. Humm? Try researching carbon cracking to get the truth!
Cargo Master
Joined: Feb 2004
Posts: 2,068
Likes: 168
From: Central Texas
I've seen a couple of FE's with significant exhaust seat erosion. I put hardened seats in mine so no worries. There was no, "I have hardened seats so I burn anything I want", option in your poll.
Thread Starter
|
Senior User
Joined: Jun 2018
Posts: 166
Likes: 2
From: Northern Colorado
Here's the Wikipedia on him... interesting. https://en.wikipedia.org/wiki/Charles_Nelson_Pogue
Fleet Mechanic
Joined: Aug 2016
Posts: 1,480
Likes: 6
From: Great White North
I came into the original Pogue patents sometime in the past. I think it is a myth that lead raises the octane. A basic search of oil refinery process proves this. Lead is the layman term for tetra....blah blah whatever it is can't spell it
Thread
Thread Starter
Forum
Replies
Last Post
arthall
1948 - 1956 F1, F100 & Larger F-Series Trucks
4
Oct 30, 2018 08:15 AM
RattyFord
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
2
Aug 2, 2018 02:07 PM
brit_wheels_fan
1948 - 1956 F1, F100 & Larger F-Series Trucks
4
Feb 4, 2010 11:19 PM
MEPR
1961 - 1966 F-100 & Larger F-Series Trucks
2
Mar 10, 2006 03:27 PM