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

Farmall & IHC Tractors Discussion Forum

460 87 or 93 Octain

Welcome Guest, Log in or Register

Author

GooseCreek Farm

04-15-2005 04:29:01

Report to Moderator

Recently read a post on 87 vs 93 octain which left me confused. We recently purchased a Farmall "460" and plan on using it to plow and work up about 6 acres to plant food plots for wild game. Which % octain of gasoline whould we use? We also have a Farmall "M" and a "300" that we use on a limited bases. What % of ocatin should we use in these tractors. Thanks for your help in advance

[Log in to Reply] [No Email]

Joe Evans

04-15-2005 11:28:54

Report to Moderator

Re: 460 87 or 93 Octain in reply to GooseCreek Farms, 04-15-2005 04:29:01

We don't work our 460 that often anymore, but when we do, her ears are pinned back. At last year's Plow Days, she went hard a-disking for 6 hours or so sucking on an 87 octane diet. Seemed happier than a possum eatin' cow poop on 87. Our 460 is stock.

[Log in to Reply] [No Email]

the tractor vet

04-15-2005 07:47:03

Report to Moderator

Re: 460 87 or 93 Octain in reply to GooseCreek Farms, 04-15-2005 04:29:01

Well here we go again , yea it will run on 87 but that is not what the book calls for and you may get by just playen with your toy But since i have been there and done that i am tellen ya if you real work the tractor 87 will end up giving you problems . But hey it is your wallet and your time .Just take your toy out and put it on a set of plowes and sink them in the ground and go for it i am not just talken your garden that is 100 feet long and it will not take long or go out and grind a batch of feed running ear corn thru a small screen if the wrong oil don't get you the gas will. We use gas tractors they way they were ment to be used and yes i get a littel more out of them but so do you by rebuilding them with the overbore and step head pistons just what do you think makes poney power. They sure are not the way they came from the factory and we have one 460 over here that is used everyday on a manuar spreaderand untill we started using 93 octain in it you could only spread on the flats or down hill when pullen up hill it would get hot and start to seeze and it is bone stock. or if you tryed to grind feed if you shoveled to fast it would get hot and start to seeze . And since you can not get a forged piston for a gasser anymore and the cast pistons can't get ride of the heat fast enough they swell and melt .and if i am thinking correctly a 460-560 gasser required 90 octain unless you up graded a 560 to a 706 263 kit then you have to move up on the gas. I just wish i had the extra bucks to get a didital camra and show you what the pistons look like after they get hot . Keep in mind that i have been building engines for over 40 years anything from mild to wild from a blowen hemi to a turbo fords and even a coupel farm tractor gassers ( boy they would run but they sure made a lot of spare parts.) So if you guys think that i am kidding you on this and also think back to the mid 50 - the earlie 70's and just what was the gas that you bought at the pump reg at most stations were 95 octain reg and 100-105 high testand that is what these engines were ment to run on . The comp. ratio for the family sedan was on avg. 9.1 to 10 to 1 and if it had a 4 bbl. it was 10to1 to 11to 1 429 and 460 ford were 11 to1 390's came in two versions a prem. fuel 10.5 to 1 and a reg fuel 9.5 to 1 A 383 2bbl. was a 9.5 to1 and a 383 4bbl was 10.5 to 1 . then along came the tree huggers and down went comp. ratio and down went the fuel and along with it fuel milage . If you fallowed the engine building you would see what you had to do and even the parts books will tell you what you can get away with and what you can't .Just try and take a OLD 460 ford and rebuild it back to stock and see what happens with the 11 to 1 comp. the best that you can run on pump gas is a 9.3 to 1 and that is on the high test of today and you have to knock the timming back no more 38 degrees total at 2000 that don't fly. But hey what do i know .

[Log in to Reply] [No Email]

Danny H

04-15-2005 08:29:55

Report to Moderator

Re: 460 87 or 93 Octain in reply to the tractor vet, 04-15-2005 07:47:03

Sats on IH 460

Engine Bore x Stroke IHC 6-221 Gas 3-9/16 x 3-11/16

Rated RPM 1800

Compression Ratio 7.2 : 1

Weight 5650 # (actual)

7.2:1 compression ratio has no need or use for high octate fuel.

[Log in to Reply] [No Email]

ChadS

04-15-2005 10:59:56

Report to Moderator

Run a compression test in reply to Danny H, 04-15-2005 08:29:55

If the engine in that 460 has 155 or less, then 87 would be fine. 155-165 psi, maybe a 89 octane, 165+psi, 92. The 460 C-221 may not create the heat than the bigger, and newer versions of the 6 cyl. The 263's 291's in the 06's, according to the I&T manual, compression is 185-190psi. 205-210 for the LP's. The 460, had 155 psi (stock) according to the I&T book. Each engine is different, it could have an overbore kit in it, and have higher compression than what the book specs say. I say, let the compression test decide what octane to use. JMHO, ChadS

[Log in to Reply] [No Email]

ChadS

04-15-2005 08:26:52

Report to Moderator

Re: 460 87 or 93 Octain in reply to the tractor vet, 04-15-2005 07:47:03

Vet, Im gonna have to back you up on this post! I have a camerea, and I still have the pistons out of the 706 I rebuilt, and they were BEATEN to death from detonation/preigntion from the wrong octane fuel in it. I cant explain any other means for why they would be that way. Looks like they were torched. IH engines,, from what ive learned ove the years of turning wrenches on em,,, they were a bit more High performance than what they said they were. I also belive alnong with your piston theory, the head causes alot of problems too. Gotta remember,, the original 6 cyls engines, were based off the truck engines,, which were high rpm engines. you can disapate heat faster in higher rpm situations,, BUT, drop the rpms in half,, like they did on the 460-806,, and you have an engine working way to hard,, for what it was designed for. That, creates extra strain on everything internally in the engine. you try working a 460 ford, that can rev up to 5000 rpms, and drop it back to 2000, see how much problems youd have trying to work that engine hard,,, youll blow it up faster, than if you revved it up to 6500!!!! Engine design, is the hindering factor for destruction for the IH 6 cyl. heads, and pistons wee the breaking parts, in them, just like you said,, heat, too low of octane for the CYL HEAD and PISTON design= rebuild prematurely. Id say on the short stroked 460,, you mite get away with lower octane, but not for long,,, Chad

[Log in to Reply] [No Email]

Dean

04-15-2005 06:56:50

Report to Moderator

Re: 460 87 or 93 Octain in reply to GooseCreek Farms, 04-15-2005 04:29:01

You will gain nothing and spend more by using anything above 87 octane in any stock vintage gasoline farm tractor.

Dean

[Log in to Reply] [No Email]

NDS

04-15-2005 06:54:46

Report to Moderator

Re: 460 87 or 93 Octain in reply to GooseCreek Farms, 04-15-2005 04:29:01

The only time anything over 87 octane is needed is when someone trys to use a tractor pull engine for field work.

[Log in to Reply] [No Email]

Vern MN

04-15-2005 06:18:19

Report to Moderator

Re: 460 87 or 93 Octain in reply to GooseCreek Farms, 04-15-2005 04:29:01

I use the 87 in my 460 and H. Works fine.

[Log in to Reply] [No Email]

dhermesc

04-15-2005 05:50:41

Report to Moderator

Re: 460 87 or 93 Octain in reply to GooseCreek Farms, 04-15-2005 04:29:01

87 will run anything with "FARMALL" on the side (as long as it's a gas engine). Only time it becomes an issue is when you have done some serious modifications.

[Log in to Reply] [No Email]

Tailhunter

04-15-2005 06:45:24

Report to Moderator

Re: 460 87 or 93 Octain in reply to dhermesc, 04-15-2005 05:50:41

Farmall = low compression = 87

[Log in to Reply] [No Email]

Allan in NE

04-15-2005 06:17:02

Report to Moderator

Re: 460 87 or 93 Octain in reply to dhermesc, 04-15-2005 05:50:41

Amen to that!

Allan

[Log in to Reply] [No Email]

JOSSETTE

04-15-2005 04:42:08

Report to Moderator

Re: 460 87 or 93 Octain in reply to GooseCreek Farms, 04-15-2005 04:29:01

the higher the better

when I work the old girl hard I spend an extra dollar on Isopropal ( the red bottle) to get the best power...

[Log in to Reply] [No Email]

RustyFarmall

04-15-2005 07:23:06

Report to Moderator

Re: 460 87 or 93 Octain in reply to JOSSETTE, 04-15-2005 04:42:08

Jossette, go ahead and spend your money on that red bottle if you want to, but it will not give you any more power unless the engine has been modified to the point that it needs more octane to prevent pre-ignition. If your engine has been modified to that extreme, you should not be using it for everyday farm work.

[Log in to Reply] [No Email]

JOSSETTE

04-15-2005 08:10:35

Report to Moderator

Re: 460 87 or 93 Octain in reply to RustyFarmall, 04-15-2005 07:23:06

the thing that it does is gets the water seperated so you can get the most out of the watered down gas..

it does not hurt a thing if use it to plow for a dat or two and putt around the rest of the year..

statistics never tell the good side only the bad..

I leave you with this

TRY IT before you condem it

[Log in to Reply] [No Email]

Water Separator?

04-15-2005 12:49:42

Report to Moderator

Re: 460 87 or 93 Octain in reply to JOSSETTE, 04-15-2005 08:10:35

When the water gets separated, where does it go?

[Log in to Reply] [No Email]

RustyFarmall

04-15-2005 10:40:32

Report to Moderator

Re: 460 87 or 93 Octain in reply to JOSSETTE, 04-15-2005 08:10:35

Buy the 89 0ctane E-10 at the pump, save 2 cents per gallon, and you won't need the red bottle.

[Log in to Reply] [No Email]

85_Ranger4x4

04-18-2005 16:12:29

Report to Moderator

Re: 460 87 or 93 Octain in reply to RustyFarmall, 04-15-2005 10:40:32

If ANY water gets in ethonal it will seperate the alcohol out. It will run fine until it gets the alcohol then you have to stop and drain it out, at least we always do. We try to get 87 whenever we can just for that fact, the 89 is ethonal around here and the 92 is just a waste of $$

[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