CRG Discussion Forum
Welcome, Guest. Please login or register.
Did you miss your activation email?
August 21, 2014, 06:59:43 PM

Login with username, password and session length
Search:     Advanced search
Welcome to the CRG Discussion Forum!
Forum registration problems: Make sure you enter your email correctly and you check your spam box first. *Then* email KurtS2@gmail for help.
103326 Posts in 12155 Topics by 4691 Members
Latest Member: 67Nick
* Home Help Search Login Register
+  CRG Discussion Forum
|-+  Camaro Research Group Discussion
| |-+  Maintenance
| | |-+  Fuel Lead Additive
« previous next »
Pages: [1] Print
Author Topic: Fuel Lead Additive  (Read 3353 times)
69OlympicGoldSS
Member
***
Posts: 26



View Profile
« on: October 09, 2006, 06:23:01 AM »

I have a stock '69 SS with the 300 horse 350.  Don't I need to dump in some Lead Additive every time I buy fuel?  Anything else I should be doing to preserve the motor?
Logged

See the USA, in your Chevrolet.
JohnZ
CRG Member
*****
Posts: 4067


View Profile Email
« Reply #1 on: October 09, 2006, 10:06:54 AM »

"Lead additives" don't contain lead - it's illegal to sell tetraethyl lead, as it's a strong carcinogen, easily absorbed through the skin. You don't need any "lead additive" - exhaust valve seat recession isn't an issue unless the engine is in a boat or you pull a trailer at 100 mph all day long; all lead additives will do is 1) Lighten your wallet, and 2) Eat the protective plating off the inside of your float bowls (the "additives" are LOADED with alcohol, except Jack Podell's, which is 99.8% kerosene).  Shocked
Logged

'69 Z/28
Fathom Green
CRG
lakeholme
Hero Member
*****
Posts: 2143


*68-12D L30/M35*


View Profile WWW
« Reply #2 on: October 09, 2006, 10:29:54 AM »

Take a look at this Chevron site:
http://www.chevron.com/products/prodserv/fuels/bulletin/unld-gas/
It gives some detail as to why JohnZ is giving you good advise.
Logged

Phillip
HNR-AACA, Senior Master
Planning 2016 Sentimental Tour, AACA (and restoring a 40 Buick Special for it)
AACA Southeastern Division Spring Meet Chair
"Charlotte AutoFair, presented by the Hornets Nest Region, AACA, is the largest and greatest Collector Vehicle Event in the Southeast USA."
RJ_RS_SS_350
Member
***
Posts: 98


View Profile
« Reply #3 on: October 09, 2006, 10:51:47 AM »

So, yes, if you're not going to drive it much, you should be ok.  If it's a daily driver, you should get the hardened valve seats installed. When I rebuilt the motor on my F100 I figured it didn't need hardened seats. About 9 months later one of the valves had sunk.   Sad  Or you could check with a machine shop, see if it cost more to do the work after the damage is done. If the cost is the same, wait and see if it becomes an issue.
Logged
JohnZ
CRG Member
*****
Posts: 4067


View Profile Email
« Reply #4 on: October 10, 2006, 11:59:01 AM »

If you have heads with 2.02/1.60 valves, machining for exhaust valve seat inserts can be very risky unless it's done by a shop that REALLY knows what they're doing; 2.02/1.60 heads are prone to cracking in the very narrow region between the valves as it is, and the chamber roof isn't very thick in that area - an inexperienced machinist can easily go through into the water jacket when cutting the recess for the seat insert.
Logged

'69 Z/28
Fathom Green
CRG
sam
Member
***
Posts: 232


View Profile Email
« Reply #5 on: October 12, 2006, 07:52:25 AM »

John. I am wasting my time with Jack Podells additive in my 69 Z? I have been using it for a couple years now. Not worth it? What is good to use? A couple gallons of VP and some 92 octane in every tank full?  Thanks,  Sam
Logged
lakeholme
Hero Member
*****
Posts: 2143


*68-12D L30/M35*


View Profile WWW
« Reply #6 on: October 12, 2006, 08:26:16 AM »

Take a look at these threads:

http://www.camaros.org/forum/index.php?topic=642.0

http://www.camaros.org/forum/index.php?topic=312.0
Logged

Phillip
HNR-AACA, Senior Master
Planning 2016 Sentimental Tour, AACA (and restoring a 40 Buick Special for it)
AACA Southeastern Division Spring Meet Chair
"Charlotte AutoFair, presented by the Hornets Nest Region, AACA, is the largest and greatest Collector Vehicle Event in the Southeast USA."
hotrod68
Hero Member
*****
Posts: 520


almost finished

rusticman48@aol
View Profile Email
« Reply #7 on: October 12, 2006, 11:36:03 PM »

For 10 years I drove my '68 daily and raced it on the weekends with #291 heads and never had a prob with unleaded gas eating the seats up, and that was with a wild cam. Right on, JohnZ. I call B-S on the whole concept. It's amazing what mass-marketing disinformation can get people to worry about and buy!
Logged

HotRod'68  1968 SS350 coupe undergoing frame-off resto/rod. 386/350/4.11s
Butternut Yellow    black standard interior
69OlympicGoldSS
Member
***
Posts: 26



View Profile
« Reply #8 on: October 13, 2006, 06:27:43 AM »

Thanks for all the advice gang.  Having lived thru the chane-over era from leaded fuels to unleaded fuels I remebered it was quite the hot topic back then.  Sounds like it is a non issue for my 1969 occasional driver.



Logged

See the USA, in your Chevrolet.
jdv69z
Hero Member
*****
Posts: 634


69 RS Z/28 52E


View Profile Email
« Reply #9 on: November 03, 2006, 12:24:47 PM »

I agree that additive is not required. Have 69 Z with 11:1 pistons, and have not had problems running unleaded premium. No valve problems after 24 years and 16,000 miles.

Jimmy V.
Logged

Jimmy V.
Pages: [1] Print 
« previous next »
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!
Page created in 0.126 seconds with 18 queries.