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Pistons,Pistons,Pistons

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BEL

05-01-2002 18:36:04

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Just purchased two Farmall M`s. Am curious as to what type pistons they might have, standard, M@W,5000ft or 9000ft.How many pistons are there, I even hear of firecraters. One runs about 150 pounds compression, the other about 120 pounds. Both run great. Short of tearing down the engine is there a way to find what piston is installed? Would it be wise to use premium fuel with higher compression engine? As usual thanks in advance to those who care to comment.

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Steven@nd

05-01-2002 19:06:25

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Re: Pistons,Pistons,Pistons in reply to BEL, 05-01-2002 18:36:04

As for what type of piston you have, you either need to pull the head or get one of those bore scopes for a couple hundred bucks to look in there. Here are some pics of the various types for you to look at too. Here are some specs from weberstractorworks.com tune up page: C 248 - 121psi C 264 firecrater - 132psi

As for the fuel, if the tractor doesn't run hot or knock or ping you are fine. These tractors were designed to run on 70 octane fuel from the factory. Now we run 87 as the lowest grade available, you should be OK. And don't use lead additive either, it is not necessary.

third party image
This is what the pistons I got for my H look like from Powr Seal. They have been available like this for quite some time.

M&W turbo dome

M firecrater piston

M&W pistons

Steven

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BEL

05-02-2002 18:20:59

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Re: Re: Pistons,Pistons,Pistons in reply to Steven@nd, 05-01-2002 19:06:25

Thanks so much for the pictures of the pistons. A very valuable addition to my manuals, and you must have gone to alot of trouble Steven@nd. BEL

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Steven@nd

05-03-2002 19:45:22

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Re: Re: Re: Pistons,Pistons,Pistons in reply to BEL, 05-02-2002 18:20:59

No trouble at all. I'm kinda a computer guy and had posted the pics before for a debate on pistons. My piston says Conformatic on it - those are the replacements that have been available for a while now.

Steven

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the tractor vet

05-01-2002 19:47:17

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Re: Re: Pistons,Pistons,Pistons in reply to Steven@nd, 05-01-2002 19:06:25

Steve the 70 octain my be the grade that was used when the M's came out but buy the time that the 50's the fuel was getting better and buy the time of the V8's with high comp and higher RPM's and 4bbl carbs Reg. gas was 95 octain and high test was 100 plus and they were useing lead . I know you are just a youngster but i can remember when the S/M was new and first out and when the S/MTA came out i wanted one but back then it was not on my dad's list of things to have in town so i had to settel for going out to my uncles to play with his tractors and got to drive a S/MTA when new . And back then i knew what grade fuel that was used on the farm and it was reg gas for the ractors and high test for the cars and trucks Because i put the wrong gas in the tractor one time and my uncle set me stright on what went where. Some time he could realy get your attencion.

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Steven@nd

05-02-2002 05:34:35

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Re: Re: Re: Pistons,Pistons,Pistons in reply to the tractor vet, 05-01-2002 19:47:17

Thanks for the clarification, TV. I was only going by the advertisements that I have and what is written in books. I guess I haven't found anything that conflicts the 70 octane in any books yet. But it is true that in the 60's I think you could buy like 104 octane fuel at the station? I know there were some Corvettes that took it.

I really wish I could have been there when the SMTA's were new. I don't like growing up in this time frame - I'm too old fashioned. Would have liked to been a teenager in the 60's like my Dad so I could have had the chance to own some muscle cars. Now my 95 T-bird with 205 horses is supposed to be powerful. Oh well..

Steven

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the tractor vet

05-02-2002 08:23:32

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Re: Re: Re: Re: Pistons,Pistons,Pistons in reply to Steven@nd, 05-02-2002 05:34:35

AAAAA HHHHH H the SIXTY's , well i started out with a 56 Ford rag top with a 292 T/bird spec. that i sorta redid with dual quades and 312 blower cam and head man headers and it ran on 105 fuel that i bought at a littel truck stop just west of where i worked because i got a discount on the gas thrugh the const co where i worked had that car for a year and bought a 61 ford rag top and put a 390 tri power in it with a 4 speed and a lot of other goodys and ran it on the strip every week end that they were open . uncle sam put a damper on the next one and in 68 i bought a road runner and realy did not do much to it and in 70 i bought the 340 Duster and it was a fun car just as it was from the factory it would run a 13.23 in the quater wright off the show room floor. and that was the last car that i bought all the rest have been trucks.

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Leon

05-02-2002 07:30:49

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Re: Re: Re: Re: Pistons,Pistons,Pistons in reply to Steven@nd, 05-02-2002 05:34:35

Steven You would have liked the 62 Ford I bought new back then. It had 406 cid with 405 hp and 3 two barrel carbs from the factory. I immediately modified the engine and upped the hp greatly.
It was fun and since it gave the appearance of a family car, it surprised a lot of people. Those were the fun days.....Leon

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the tractor vet

05-02-2002 08:32:45

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Re: Re: Re: Re: Re: Pistons,Pistons,Pistons in reply to Leon, 05-02-2002 07:30:49

Ah yes the 406 tri power my 61 had a 390 401 horse it it but like you it was redone and i do not know just how much it put out but it's best time and speed was 11.56 at 118.23 mph in the 1/4 . there were things done to that engine that most people today would never do and in a grudge run against my one buddy's 63 1/2 galx. 427 i got him buy three car lenght thru the 1/4 , he ran a 12.47and mine ran a 12.04 on that one . She was a dog out of the hole but when it got into second it was all over.

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Leon

05-02-2002 09:38:13

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Re: Re: Re: Re: Re: Re: Pistons,Pistons,Pistons in reply to the tractor vet, 05-02-2002 08:32:45

You Guys got me to remembering things. I was a mech at a Ford Eaaler then. The 390 HP got me into the drag racing. I ran the 406 on the strips each week end in Special super stock. Can't remember the speed or times. I welded stubs with caps on the exaust just past the manifolds and removed the caps at the track. Jacked up the front end and slid a hardwood small board in the coil springs so it would hold the front end up. Put on Soft rubber Atlas bucyron (?) tires on the rear and I was tough to beat. Had no problems with the 409 chevys. I also used the HD over drive tranny. Found it worked better than the 4 speed. Dream on..... ....

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the tractor vet

05-02-2002 14:04:15

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Re: Re: Re: Re: Re: Re: Re: Pistons,Pistons,Pistons in reply to Leon, 05-02-2002 09:38:13

I do remember the old 409 chebby , there was a guy in my highschool that his daddy was a doctor and bought jr. a new 63 implalia and ofcourse we went at it and it was FORD rules 5 for 5 . On mine i had a set of Jardean headers and a Crowler Roller cam with .675 lift. At the strip i ran in B/S no et. bracket stuff it was run what ya brung .Need a truck back the just to haul the trophes home never ever beat.

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Leon

05-02-2002 18:44:14

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Re: Re: Re: Re: Re: Re: Re: Re: Pistons,Pistons,Pistons in reply to the tractor vet, 05-02-2002 14:04:15

Before I get run off this forum, one more.
I worked at a Ford dealer & had the run of the place. When the little Pinto came out I took one into the shop and put a intake and a 4V carb on it
along with a cam & valve train & exaust. Can't remember what all else. It was a little 4 cyl with a 4 or 5 speed. Gave it to a friend to run on the strip. They didn't know what a pinto was so they bracketed. It would smoke the tires in 1st 3 gears and they couldn.t catch that thing.
It was hilarious. Run it for a year and got a load of trophys. he he Put it back to original and sold it as a demonstrator.

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