SAAC Forum

Quote from: SFM6S087 on April 20, 2018, 04:34:14 AM
Would someone please explain if the oxygen (weight%) matters. I see that in the chart of the various Sunoco fuels. Is a high number or a low number better? What about zero? Or should I just ignore that column?


I don't profess to be a fuel expert by any stretch, but I do a lot of reading. According to the description for Sunoco's EX02 extreme oxygenated blend it is useful in high altitudes and where race rules restrict flow such as; restrictive heads, 2bbl carbs, crate motors, etc. Since the amount of power you can get out of any particular engine is directly proportional to the amount of air (oxygen) and fuel that you can cram into the cylinders, fuel with added oxygen lets you bump up the jets to deliver more fuel which equals more power. See https://www.sunocoracefuels.com/fuel/ex02

Also, as long as you have a good octane number, does leaded matter?


Lead increases octane as well as lubricating the valvetrain. See https://www.sunocoracefuels.com/tech-article/race-fuel-101-lead-leaded-racing-fuels

I assume the fuels with "E" in the name have the dreaded ethanol. Correct?


Not positive, but I don't believe the EX02 is ethanol based. See more about alcohol & octane: https://www.sunocoracefuels.com/tech-article/alcohol-and-octane

Thanks,
Steve

The fuel needs of a vintage muscle car like a Shelby and the needs of a full-on race engine are quite different, so take that into consideration. There is no sense buying race gas when pump gas will do for a particular application. ~Kevin

Mixing fuels will give you a blend of octane and/or oxygenation levels: https://www.sunocoracefuels.com/tech-article/mixing-fuels-calculating-octane
Purple gas and the 90 octane non-ethanol I use have no oxygen, but other blends do and the resulting mixture will affect how the fuel delivery system is calibrated.

Lots of good info on the Sunoco Race Fuels website: https://www.sunocoracefuels.com/ Comparisons of their fuels, locations where you can purchase and tech articles.


As for the Congressional testimony to the House Energy and Commerce Committee's environment subcommittee, I'm not going to hold my breath and hope that Congress or the bureaucrats get it right. My question would be; what is the (R+M)/2 rating of the 95 RON fuel they are lobbying for? 88? Maybe 89? And if they "pollute" that with a higher ethanol percentage, then I have vehicles that won't run well, if at all.


My Shelby has 11.5:1 CR and requires 100+ octane. I've been mixing 1/3 90 octane non-ethanol with 2/3 Sunoco purple 110 to get to about 103 which the engine seems to like. Right now the non-ethanol is about $3.33/gal and the race fuel just jumped from $8.37 to $8.62/gal. At about 10-12 MPG (the way I drive it) it's not the most economical car I own, but the smile it puts on my face is priceless! I'm thankful that I can still purchase this stuff. I just hope the government doesn't screw that up. I don't think that the auto industry lobbyists are watching out for someone like me (us).

I was going through some papers that I got when I bought my car (2148) from John Barnes and the build sheet that I thought was for my car actually has a different serial number. If you are the current owner of #590 PM me. Not looking to sell just want it returned to where it needs to be.


Kevin

Did you try just typing saacforum.com into the address bar?


If you type in https://saacforum.com or if you bookmarked the link with the https:// prefix then you'll get the warning. The warning is generated by your web browser when it can't find a valid security certificate on a site with an https:// prefix. Maybe a recent browser update caused this issue to appear?


Since there isn't a payment processing feature on this forum it's not as critical for it to have a security certificate. All a certificate does is verify through a trusted source that you are on the web site that you think that you're on. EDIT: and provides encryption of the data sent and received.


Now if you'll excuse me I need to return to the bunker, put my tinfoil hat on and see what's new on InfoWars...     

If you navigate to https://www.saacforum.com you will get a security warning because this forum is not set up as a secure site. Try typing just "saacforum.com" into your browser and you should not see the warning.
And as it has been pointed out before, this site is not secure and it is visible by anyone in the world with an Internet connection, so understand that whatever information that you share here can be seen by anyone including your email, date of birth, gender, location, etc. if you choose to include them in your profile.

Quote from: Shelby_0022 on April 11, 2018, 11:39:24 AM
Side note - this is the 3rd thread on this subject. 

My apologies. I looked through the Up For Auction section to check before posting - didn't search the rest of the forum.

Bonhams will be auctioning off 23 vehicles from CS private collection on June 3rd: https://www.motorauthority.com/news/1116173_carroll-shelbys-personal-car-collection-heading-to-auction


Every car sold with no reserve. No word on how many are signed.

I'd start with Jim Inglese http://jiminglese.com/


Emailed him with a question about air filters for my setup (don't use 'em). He responded personally within about 10 minutes. Now that may be a fluke because he happened to be sitting at his computer at the time, but if I was going to invest in a second Weber setup it would be so worth it to be able to speak with the guy who actually set them up and not be routed through some automated telephone system or a know-nothing lackey. Turns out his shop is only an hour and a half away from me so I'm planning to bring the car over one day and have him give it a once over (even though it seems to be running fine). It can't hurt to watch and learn from one of the best.

Welcome to the 8-stack pack! You'll enjoy them 

I had a 2000 F250 with the 5.4 gas engine and it strained to pull any heavy load. Pulled open car haulers, enclosed trailers and a gooseneck with my JD farm tractor. It was grossly underpowered IMHO. Then I traded up to a 1995 F250 with the 7.3 Powerstroke. Night and day difference. Pulls my 24' enclosed trailer with the Shelby or my gooseneck and tractor without breaking a sweat. The tow vehicle is the key - most any trailer will work.

I for one love seeing the CS support vehicles especially the COE haulers and the crazy single axle trailer rigs they hauled Cobra Daytona coupes with. Keep 'em coming!

Mark, if pulling out the choke keeps it from stalling then it's not getting enough fuel. Could be fuel pump, filter, crap in the tank or carb issues. If the floats aren't set properly the float bowls won't fill up and it will starve for fuel. Same thing can happen if the needle valve is sticking (closed).


Interestingly, my '68 GT350 is #2148 also. Does that make us next-of-kin?


Kevin

++1