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Techical Discussions => Tech- - FUEL => Topic started by: Guests on March 23, 2011, 05:32:15 PM

Title: Newbie question - Lead additive for '53 Imperial?
Post by: Guests on March 23, 2011, 05:32:15 PM
I recently inherited 1953 Chrysler Imperial in pretty nice condition. I haven't had to re-fuel it yet, but I will soon.

Do I need to purchase some sort of lead additive to mix with the unleaded gasoline?

Any help will be greatly appreciated!

- Thanks


Title: Newbie question - Lead additive for '53 Imperial?
Post by: Steve on March 23, 2011, 06:02:39 PM
MMMM   Straight 8, L Head engine.
 
Technically no.  They have been sneaking in additives to substitute the lead.  The lead was in gas to act as a lubricant and cool the valves and seats.  However, the grade of iron used back in the early 30's wasn't what it is today.  So the question leaves allot of question marks.
 
That said, I would run mid or premium grade with the lead additive.  It can't hurt and won't harm.
 
Anybody else?
 
[color=#ffff00 size=7 face="Verdana, Arial, Helvetica, sans-serif"]WELCOME![/color]
Title: Newbie question - Lead additive for '53 Imperial?
Post by: Steve on March 23, 2011, 06:04:31 PM
Oh yeah  You're not allowed to be a member without posting pictures.  (http://www.moparfins.com/forum/smileys/smiley2.gif)(http://www.moparfins.com/forum/smileys/smiley2.gif)(http://www.moparfins.com/forum/smileys/smiley2.gif)
 
Just kidding
Title: Newbie question - Lead additive for '53 Imperial?
Post by: Leaburn Patey on March 23, 2011, 06:52:08 PM
Steve...53 Imperials came with the 331 c.i. Hemi
http://www.imperialclub.com/Yr/1953/specs.htm#equipment (http://www.imperialclub.com/Yr/1953/specs.htm#equipment)
 Drees27606...
WELCOME!!
No lead additive needed since the compression ratio was a low 7.5:1


I would suggest running a premium fuel 91 octane or better that does not contain ethanol.
Shell V-power comes to mind.
No ping and runs cleaner with no gumming up of carburetor parts.
Not to mention a bit more pep.
Other brands please read the pump carefully.
Your Imp could be a  rare car depending on model and body style.
Check out the Imperial online site for info on your particular model..
http://www.imperialclub.com/Yr/1953/FactsAndFigures.htm (http://www.imperialclub.com/Yr/1953/FactsAndFigures.htm)
 
 
CBarge2011-03-23 22:54:10
Title: Newbie question - Lead additive for '53 Imperial?
Post by: Steve on March 23, 2011, 07:13:52 PM
(http://www.moparfins.com/forum/smileys/smiley36.gif)(http://www.moparfins.com/forum/smileys/smiley36.gif)(http://www.moparfins.com/forum/smileys/smiley36.gif)(http://www.moparfins.com/forum/smileys/smiley36.gif)(http://www.moparfins.com/forum/smileys/smiley36.gif)

Your right lea.  I'm thinking of the 50 and 51.  I Bad
 
Too late to stuff a hemi in my 50 Windsor.
 
Either way, the lead won't hurt
Title: Newbie question - Lead additive for '53 Imperial?
Post by: Steve on March 23, 2011, 07:17:01 PM
Lea
 
Don't forget, he'll have to upgrade the components in the carb and the fuel line hoses because of these new gasolines.  The straigt 8's had a lower compression as I recall.  I know the 231 was like 6.5:1
Title: Newbie question - Lead additive for '53 Imperial?
Post by: Guests on March 23, 2011, 08:56:59 PM
As you said earlier, they have been sneaking in additives to make up for the lead, started about as soon as the leaded gas was totally gotten rid of and even back in 1953 with the low compression and all, shouldn't be a problem at all, you could almost filter a fifth of everclear through your kidneys and they would still run. My concern with gasoline would be the alcohol blends and running lean. Save the money on additives, unless it is Stabil to keep the gas from going too stale, and even then, low compression can run on about 70 octane at that compression (mid 7:1) without a problem. Remember, gas was pretty bad back in the day, octane was pretty low to start with.
Title: Newbie question - Lead additive for '53 Imperial?
Post by: Stitcherbob on March 23, 2011, 09:44:05 PM
The amount of driving a classic car receives nowadays is not enough to worry about valve seat erosion (typically takes 50,000 miles of unleaded to happen)....unless the valves are suspect already. A compression/leakdown test will show whats going on inside there and if a valve job is necessary, then installing hardened valve seats is a good idea.

Might not hurt to run Marvel Mystery Oil ( a top engine lubricant ) once in a while as a precaution......


Title: Newbie question - Lead additive for '53 Imperial?
Post by: Stitcherbob on March 23, 2011, 09:47:32 PM


ps-

as a new owner of an early Hemi V8, you should have this bible on your bookshelf.... despite the cover photos, it also deals with stock Hemi stuff in detail

http://www.amazon.com/Complete-Chrysler-Hemi-Engine-Manual/dp/1878772015/ref=sr_1_1?s=books&ie=UTF8&qid=1300945508&sr=1-1 (http://www.amazon.com/Complete-Chrysler-Hemi-Engine-Manual/dp/1878772015/ref=sr_1_1?s=books&ie=UTF8&qid=1300945508&sr=1-1)

(http://ecx.images-amazon.com/images/I/51inQPGFYUL._SL500_AA300_.jpg)

stitcherbob2011-03-24 01:49:26
Title: Newbie question - Lead additive for '53 Imperial?
Post by: Corey on March 24, 2011, 11:37:57 AM
bob I dont have a hemi but where can i get that book.
 
 
stinger11702011-03-24 15:38:47
Title: Newbie question - Lead additive for '53 Imperial?
Post by: Stitcherbob on March 24, 2011, 03:41:32 PM
Cory has become Discomboobulated

(http://www.moparfins.com/forum/smileys/smiley2.gif)


Title: Newbie question - Lead additive for '53 Imperial?
Post by: firedome on March 24, 2011, 04:15:52 PM
I'd be more worried about zinc in the oil (ZDDP) than lead in the gas.

Title: Newbie question - Lead additive for '53 Imperial?
Post by: Steve on March 24, 2011, 06:12:22 PM
[/QUOTE]

I keep forgetting people let these things sit, while I drive them through their second childhoods
Title: Newbie question - Lead additive for '53 Imperial?
Post by: Snotty on March 25, 2011, 05:48:47 PM
To the question, I ran Lead Sub in the 413 of the '62 New Yorker I sold to Polarco, and also used it on my current '70 440 Newport with every fill-up.  Then something strange happened - I could not find it in stores any more!  I assumed it was another California Smog pile of Crap that was being tossed on us.  What I discovered by talking with a Professional Mechanic is this: after 30 years on unleaded gasoline use, the fears of valves coming apart and wearing early have turned out to be unwarranted.  Therefore, most, if not all companies that made the stuff have stopped. 
 





I have not used it in a year.  I would not worry about it.  In retrospect, I never used it in my '70 Challenger with a /6 and never had a problem either.
Title: Newbie question - Lead additive for '53 Imperial?
Post by: Steve on March 25, 2011, 10:29:21 PM
I go back to what I said earlier scott.  The iron used in the early fifties wasn't that great.  Hell I remember replacing the valves in my 57 plymouth back in the 60's because they burned out.  The quality of the iron didn't really change until the late 50's when high compression engines cane out.  Better iron was the reason why they were able to do a 10:1 vs a 7:1
 
They have also been sneaking more synthetics to replace the lead too.  It was discovered it was needed.