TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Discussion Forum

More Octane??

Welcome Guest, Log in or Register

Author

Dave T.

11-20-2002 19:40:51

Report to Moderator

I have a 1946 A that Ive been having trouble with it pinging at full load. I had the distributer recurved by matt at Motec, he did a great jog. I took it out and plowed today. At full load it pings..it gets worse if it lugs more. Im running 89 octane ethonol. I run AC c86 plugs, has 6.5-1 hi-compression Clevite pistons, electronic ignition. Should I have to run more octane? Could I mix a gallon of aviation gas with 15 gallons of 89 octane gas, would this help?? I run 120 psi compression at cranking speed with a gas head and manifold. I also pull with this A...Id like to get it to NOT ping all the way down to the last pop. I think the ONLY thing left to exaust is more octane? ANY advise would be VERY appreiciated!!!! Ive also tried retarding the timing where it goes away but then it is retarded almost 15 degrees at a idle, and the distributer is at a 45 degree angle pointing down, then I also lose my upper end power.

Thanks!

Dave T.

[Log in to Reply] [No Email]

a puller

11-22-2002 20:49:44

Report to Moderator

Re: More Octane?? in reply to Dave T., 11-20-2002 19:40:51

run 94, if it don't work, run 110, thats what we run in our G and it has 200psi. We just have a flathead and .090 in it. We dyno 68hp. it spark-knocks with anything less then 110.

[Log in to Reply] [No Email]

Ron

11-22-2002 14:35:53

Report to Moderator

Re: More Octane?? in reply to Dave T., 11-20-2002 19:40:51

I kow of a MotorCycle shop near me that sells High Octane Leaded gas, in 5 gallon cans...any octane you want...I got 125 Octane, but they had higher... I use it, just to add some lead to the non-leaded fuel we have to use, now... THEN, I add some Kerosene, so-If someone steals some gas..they will be not only buying a Catalytic converter, but an O2 senser, too...AND it won't run worth a crap, in their car...!!!! 87 octane is plenty anyway..for a stock tractor..I think they required only 75 Octane, back in the '50's.....!!!!

[Log in to Reply] [No Email]

Allis Puller

11-22-2002 13:40:47

Report to Moderator

Re: More Octane?? in reply to Dave T., 11-20-2002 19:40:51

I'm not a John Deere man, but my Dad is and he runs cam2 which is 110 oct. and a lead additive. He does'nt foul pluggs anymore when he's siitin in line waiting to pull. Don't know if he actually gains anything from it though.

[Log in to Reply] [No Email]

Orange Peel, WA

11-22-2002 18:04:35

Report to Moderator

Re: Re: More Octane?? in reply to Allis Puller, 11-22-2002 13:40:47

Allis Puller, what octane do you run in your WD?

[Log in to Reply] [No Email]

Dave Thuesen

11-21-2002 21:01:38

Report to Moderator

Re: More Octane?? in reply to Dave T., 11-20-2002 19:40:51

I found my problem today!!! My compression gadge has been defective. I got a new one and I am running 180 psi at cranking speed. I need to back the timing down and give it some more octane. I didnt realize I was running this MUCH compression! Thanks for the Help!!!

Dave T.

[Log in to Reply] [No Email]

matt wagner

11-21-2002 21:19:39

Report to Moderator

Re: Re: More Octane?? in reply to Dave Thuesen, 11-21-2002 21:01:38

yah you get to much compression and you must run more octane fuel and the old john deeres run better if you put lead in the fuel and that subsitute and johnsons makes is good to so you dont burn up ur valves i dont have a good compression gauge so i dont know how much my unstyled A has so until then thanks matt

[Log in to Reply] [No Email]

matt wagner

11-21-2002 20:34:02

Report to Moderator

Re: More Octane?? in reply to Dave T., 11-20-2002 19:40:51

i have a 35" unstyled jd A i have .125 over high comp. clevite pistons 6.5:1 comp. cold gas manifold my brass carb. i run sunoco 94premium octane and it runs great but i have yet to try turbo blue its 110octane with lead i beleive it will increase horsepower by 1-3 horses but im worryed about the heat that that turbo blue will produce than 94 i have yet to dyno it but i believe that it should pull 35-42hp thanks matt

[Log in to Reply] [No Email]

TimC

11-22-2002 06:32:20

Report to Moderator

Re: Re: More Octane?? in reply to matt wagner , 11-21-2002 20:34:02

I would assume that it would run cooler with 110. If you find out otherwise please post.

I also assume that the 110 would be a slightly fast burning fuel which would allow the pistons to be exposed to the heat for a shorter period of time. You can always go to a cooler plug to suck a little more heat out into the head.

I do a lot of assuming.

[Log in to Reply] [No Email]

a puller

11-23-2002 15:57:29

Report to Moderator

Re: Re: Re: More Octane?? in reply to TimC, 11-22-2002 06:32:20

actually 110 burns slower because it is more like diesel for high compression. If you can get away with 94, it might be better.

[Log in to Reply] [No Email]

Agent Orange

11-21-2002 18:44:41

Report to Moderator

Re: More Octane?? in reply to Dave T., 11-20-2002 19:40:51

Don't know where you are but if there is a Speed Shop close by stop in and see if they have "nitro- propane" This will up your octane very well, you will need to re-jet 2 sizes and play with the mixture to optimize. Be sure you have a high compression rate though. I'm told you can burn pistons real quick with this stuff.

[Log in to Reply] [No Email]

Doug in OR

11-21-2002 08:58:24

Report to Moderator

Re: More Octane?? in reply to Dave T., 11-20-2002 19:40:51

A gallon of aviation fuel will gain you very little additional octane. Most aviation fuel is 100 low lead octane anymore - thou you *might* be ablt to find some 130 octane. Even doing this, if you average the one part of 130 against the 14 parts of 89, you will not see much additional octane.

I would look at the things others mentioned: cooler plugs, too lean a mixture. and such. It is also possible that you might have carbon deposits. This would cause hot spots, and possibly predetonation.

[Log in to Reply] [No Email]

TimC

11-21-2002 06:32:03

Report to Moderator

Re: More Octane?? in reply to Dave T., 11-20-2002 19:40:51

Richen it up a bit. Make sure you don't have any vacume leaks. Rule of thump keep unscrewing the main jet until you start getting a little black smoke. Turn it in slightly and see how it runs.
You could also try using a colder plug. The extra ceramic helps disipate the heat out into the block faster.

If it is pinging under a load don't load it until you try something to fix it. The piston is coming up creating pressure and heat, if it fires before it should the pressures and heat get extreamly high and and with slow piston speed the piston and compression ring absorbs way to much heat.

[Log in to Reply] [No Email]

ToddF

11-21-2002 05:49:45

Report to Moderator

Re: More Octane?? in reply to Dave T., 11-20-2002 19:40:51

I'm no authority so I'll throw this out for consideration only. Is it possible that there is actually a fuel delivery shortage causing a lean condition that results in the pinging? Maybe somebody else has an opinion on this thought also.

[Log in to Reply] [No Email]

11-21-2002 03:43:49

Report to Moderator

Re: More Octane?? in reply to Dave T., 11-20-2002 19:40:51

go to a higher octane fuel or retard the timing, and make sure your not gettin to hot.

[Log in to Reply] [No Email]

CLIFF

11-21-2002 11:17:49

Report to Moderator

Re: Re: More Octane?? in reply to LW, 11-21-2002 03:43:49

I HAVE A 49 A I PULL WITH HI COMPRESSION PISTONS I USE 94 OCTANE SUNOCO OR IT UILL PING.

[Log in to Reply] [No Email]

Gary

11-24-2002 05:54:04

Report to Moderator

Re: Re: Re: More Octane?? in reply to CLIFF, 11-21-2002 11:17:49

Where I used to work, they would add gasoline to the diesel fuel tanks in cold weather so that the fuel wouldn't gel. This caused them to run a tad hotter. Thinking in reverse, would adding just a little bit of diesel to gas in your tractor raise the octane rating and slow/cool down the burn? If that is true, won't slowing down the burn to last throughout the stroke give more HP and better lugging power?

Gary

[Log in to Reply] [No Email]

a puller

11-24-2002 12:38:34

Report to Moderator

Re: Re: Re: Re: More Octane?? in reply to Gary, 11-24-2002 05:54:04

I dont know if that would be good, because you get more power by explosion. When you have less explosion, the less force is behind it.

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home | Forums

Copyright © 1997-2023 Yesterday's Tractor Co.
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy