Dell Posted February 17 Share Posted February 17 I remember talking to my grandfather about his M , when he was going to buy it Whites brought it up to the farm he hitched it up to a set three bottom plows and wasnt happy he told the to take it back. They said that they could put a power kit in it. They did and he bought it. Grandpa told me it had bigger pistons ,carb kit, and something in the distributor. well i can figure out getting pistons . but need help with a carb kit and distributor kit. i might be crazy but i want a M just like my grandfather had. any help. Quote Link to comment Share on other sites More sharing options...
DWV Posted February 17 Share Posted February 17 Carburetor parts had jets and other parts to change air and fuel metering. Distributor kit was a shaft and springs to change timing advance and maximum advance from 40 degrees at crank to 22 degrees. Sleeves were thinner and piston diameter 1/8 inch bigger. Top of piston shape was changed from previous pistons. Quote Link to comment Share on other sites More sharing options...
Dell Posted February 17 Author Share Posted February 17 Dose anyone know the part numbers of those parts ? Quote Link to comment Share on other sites More sharing options...
hillman Posted February 17 Share Posted February 17 16 minutes ago, Dell said: Dose anyone know the part numbers of those parts ? they came with the IH p&s kits. Hard to find these days. If you buy a NOS kit make sure it is included Quote Link to comment Share on other sites More sharing options...
supermpuller Posted February 17 Share Posted February 17 The M&W kit was 1/2 inch stroke and 4.25 bore, recalibrated distributor, carb, different cam, radiator. , larger oil pan, high compression. the motor had 326 cu. and ran 70 to 75 hp. You could get 60 hp out of a SM with thin sleeves and pick up 1.25 bore and firecrater piston and turn up RPM's 10 percent. Most farmers went this route .There was a old farmer close buy who sold all the M&W parts and had a 41 M with all the goodies . When the JD 4010 was released the local JD dealer brought one out to his farm for a demo. The 4010 had a 3 point 4 bottom plow the M had pulled type 4 bottom plow. They went out to a field 1/2 mile long. The JD went first with the M right behind, when they turned around at the other end, the dealer was showing and pointing out all the advantages and power the JD had. The old farmer said let me go first this time and off they went. by the time they got back to the barn the M was ahead 125 yards. 3 4 Quote Link to comment Share on other sites More sharing options...
supermpuller Posted February 17 Share Posted February 17 MW is long gone but there are a lot dealers who could get over bore kits and high compression pistons. Quote Link to comment Share on other sites More sharing options...
560Dennis Posted February 17 Share Posted February 17 There’s an I h bulletin 4 pages from Case get it ! I had it but deleted it when the iPad memory filled up . gives camshafts ,head numbers Not good with kerosene head , and they are not recommended with magneto, we modified our magneto on the Farmall c Distributor is change shaft to is moved from 35 degrees to 25 approx I f you do what they say it will snort ,if not probably be less that you got now ,just saying these details are important. Quote Link to comment Share on other sites More sharing options...
snoshoe Posted February 17 Share Posted February 17 Magneto used a different drive hub. Less lag angle on the impulse. Quote Link to comment Share on other sites More sharing options...
cedar farm Posted February 17 Share Posted February 17 The carb improvement kit was 374261R92. I had 80-90 of them NOS at one time. I should look. My count shows I have four left. Quote Link to comment Share on other sites More sharing options...
IHC-DK Posted February 18 Share Posted February 18 20 hours ago, cedar farm said: The carb improvement kit was 374261R92. I had 80-90 of them NOS at one time. I should look. My count shows I have four left. Would like one too if you find them. Thanks Andreas Quote Link to comment Share on other sites More sharing options...
cedar farm Posted February 19 Share Posted February 19 9 hours ago, IHC-DK said: Would like one too if you find them. Thanks Andreas I put a note on my desk to check monday Quote Link to comment Share on other sites More sharing options...
Diesel Doctor Posted February 22 Share Posted February 22 It looks like these may still be available from Case/IH for around $75/hole. 374264R91 PISTON ASSY CYLINDER SLEEVE WITH PISTON, complete (''Fire crater increased power'') (Gasoline - standard altitude) 374515R91 PISTON CYLINDER SLEEVE WITH PISTON, complete (''Fire crater increased power'') (Gasoline - high altitude) Quote Link to comment Share on other sites More sharing options...
hillman Posted February 23 Share Posted February 23 9 hours ago, Diesel Doctor said: It looks like these may still be available from Case/IH for around $75/hole. 374264R91 PISTON ASSY CYLINDER SLEEVE WITH PISTON, complete (''Fire crater increased power'') (Gasoline - standard altitude) 374515R91 PISTON CYLINDER SLEEVE WITH PISTON, complete (''Fire crater increased power'') (Gasoline - high altitude) It appears from the links they are NLA. I would be interested if they are available. do you have other links Quote Link to comment Share on other sites More sharing options...
Diesel Doctor Posted February 23 Share Posted February 23 14 hours ago, hillman said: It appears from the links they are NLA. I would be interested if they are available. do you have other links The 374264r91 is superseded to AS128649AP for $75.00 each. 1 Quote Link to comment Share on other sites More sharing options...
acem Posted February 23 Share Posted February 23 How did the rear ends hold up with the power upgrade? Just thinking of the 560 rear ends. Quote Link to comment Share on other sites More sharing options...
hillman Posted February 23 Share Posted February 23 1 Quote Link to comment Share on other sites More sharing options...
hillman Posted February 23 Share Posted February 23 the chart I posted is M&W power gains. Does anyone have Firecrater and Power Adder claims? Quote Link to comment Share on other sites More sharing options...
DWV Posted February 24 Share Posted February 24 17 hours ago, hillman said: the chart I posted is M&W power gains. Does anyone have Firecrater and Power Adder claims? Don't have M test. SM according to IH tests of engine in good operating condition and installed with fire crater kit. At standard atmospheric conditions 29.92 inches of barometric pressure and air temperature of 60 expect 59 HP at flywheel and due to losses through power train 52.5 to 53.5 at PTO. Additional HP cand be obtained using camshaft 48196DA or DB and the 450- type manifold 362437R2. Around 3 HP more. Template included with kit was used to mark front crank pulley to set time at 22 degrees at 1450 RPM. After the distributor package with kit was installed. 48196DA was used in 400 and part of 450 engines DB used in 450 depends what year instructions were printed on camshaft specified. Difference in the two cans was DA had right hand threads to hold gear on and DB left hand to improve nut getting loose. Kits for 400 and 450 60.5 at flywheel and 54 t0 55 at PTO. Gasoline heads used, the SM heads had more volume than the 400 and 450 but pistons were different for the kits so wasn't much difference in compression. Both kits were 4.125 pistons. With later manifold and cam installed on a SM the HP would be close to same. Since a gasoline 400 and 450 used a 25 degree maximin advance to start with they didn't change those with the kits. Just a guess on why they stayed with 25 degree on the 400 and 450 is the difference in combustion chamber shape from the SM. 1 Quote Link to comment Share on other sites More sharing options...
hillman Posted February 24 Share Posted February 24 I took some pics of a Firecrater and Extra Power pistons. The Firecrater has the bigger more rounded dome on it. I sold a set that were called Power Adder with were only overbore with flat tops. Its odd they offered so many options. Allis Chalmers offered Power crater kits 1 Quote Link to comment Share on other sites More sharing options...
hillman Posted February 24 Share Posted February 24 M&W also offered a stoker crank which IMHO would be where the final drives would start to give issues/ Take a look at the domes on the pistons 2 Quote Link to comment Share on other sites More sharing options...
hillman Posted February 24 Share Posted February 24 found a pic of the set I sold. I thought they were power adders. but they are Extra Power same as the domed set to add to the puzzle., this set was for a C152 while the other sets were for a C164 but I don't think that makes a difference Quote Link to comment Share on other sites More sharing options...
Big Bud guy Posted February 24 Share Posted February 24 On 2/17/2023 at 1:13 PM, supermpuller said: The M&W kit was 1/2 inch stroke and 4.25 bore, recalibrated distributor, carb, different cam, radiator. , larger oil pan, high compression. the motor had 326 cu. and ran 70 to 75 hp. You could get 60 hp out of a SM with thin sleeves and pick up 1.25 bore and firecrater piston and turn up RPM's 10 percent. Most farmers went this route .There was a old farmer close buy who sold all the M&W parts and had a 41 M with all the goodies . When the JD 4010 was released the local JD dealer brought one out to his farm for a demo. The 4010 had a 3 point 4 bottom plow the M had pulled type 4 bottom plow. They went out to a field 1/2 mile long. The JD went first with the M right behind, when they turned around at the other end, the dealer was showing and pointing out all the advantages and power the JD had. The old farmer said let me go first this time and off they went. by the time they got back to the barn the M was ahead 125 yards. You always leave out the part that the 4010 was a gas. Which even I think are junk to begin with. 6 cylinder 302 cu vs a long stroke 4 cylinder 326 cu. I can see it happening. Shouldn't shock anybody Quote Link to comment Share on other sites More sharing options...
hillman Posted February 25 Share Posted February 25 This is Bill Burnham the M&W Guy ( he helped me with last year's project- great guy !) Theres a lot of chirping in the comments that he can't stop , ......its in a field and he can slow up and stop That old 450 is barkin' and the M is in a hurry LOL 3 Quote Link to comment Share on other sites More sharing options...
DWV Posted February 25 Share Posted February 25 4 hours ago, hillman said: I took some pics of a Firecrater and Extra Power pistons. The Firecrater has the bigger more rounded dome on it. I sold a set that were called Power Adder with were only overbore with flat tops. Its odd they offered so many options. Allis Chalmers offered Power crater kits Not sure of name but IH sold overbore kits before fire craters with flat head and step head pistons. Step heads were originally used on 5000 and 8000 altitude engines or LP on SM and part of 400 tractors. If remember correct the pistons for M and SM starting with numbers 366 or 367 used small piston pins and adapter bushing were used in the rods. Common for more power to install higher elevation pistons step head or fire crater on tractors at lower elevations when they were available. Suprise me if dealer is selling a true fire crater now. Some years ago they were down to only stocking flat tops to replace them. 1 Quote Link to comment Share on other sites More sharing options...
hillman Posted February 25 Share Posted February 25 I just checked A&I and they still have stepped head piston and sleeves but they no longer sell complete overhaul kits I called my dealer about the p/s Diesel Doc posted. No dealer in North America have them in stock and they must come from the supplier with low stock indicated. I don't know what to make of that. who knows what you would be getting and its probably coming from the Parts Depot Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.