Cub pistons choices

[47fivewindow]

I am building a 1975 original Cub engine. I will be used to cut the lawn with a 59" woods mower. Has anyone any advice on replacing the stock pistons with the domed aluminium ones? I has enought power as it is. I don't mind spending some money, but some Ebay parts may not be what I want. Our host seems to be only showing flat tops in standard. Thanks

 

[Absent Minded Farmer]

I am building a 1975 original Cub engine. I will be used to cut the lawn with a 59" woods mower. Has anyone any advice on replacing the stock pistons with the domed aluminium ones? I has enought power as it is. I don't mind spending some money, but some Ebay parts may not be what I want. Our host seems to be only showing flat tops in standard. Thanks

I don't recall that you can use domed pistons on that particular flathead. Ford's V8 flathead pistons had a bit of a dome to them. Don't think you could do anything outrageous to those engines without changing the heads. Then you are getting into performance equipment.

Which reminds me, someone did make a turbo kit for that little C-60. If you can keep that engine cool enough, it could work.

Mike

 

[Powered By IH]

I am building a 1975 original Cub engine. I will be used to cut the lawn with a 59" woods mower. Has anyone any advice on replacing the stock pistons with the domed aluminium ones? I has enought power as it is. I don't mind spending some money, but some Ebay parts may not be what I want. Our host seems to be only showing flat tops in standard. Thanks

You could possibly look up parts for a 154, 184, 185. Don't know if they used the same head but they had more oomph. Same engine base.

 

[SkipperII]

Kind of like putting lipstick on a pig?

 

[rustred]

grampa got mad at me when i used that comparison. lol.

 

[grandpa Love]

I am building a 1975 original Cub engine. I will be used to cut the lawn with a 59" woods mower. Has anyone any advice on replacing the stock pistons with the domed aluminium ones? I has enought power as it is. I don't mind spending some money, but some Ebay parts may not be what I want. Our host seems to be only showing flat tops in standard. Thanks

Part way through '75 they introduced the" Long stripe"......it had more hp. Different manifold,carb and pistons. The 185-184 Lo-boy pistons will work, same head and block . Check out Hamilton Bob's.

 

[the tractior vet]

I am building a 1975 original Cub engine. I will be used to cut the lawn with a 59" woods mower. Has anyone any advice on replacing the stock pistons with the domed aluminium ones? I has enought power as it is. I don't mind spending some money, but some Ebay parts may not be what I want. Our host seems to be only showing flat tops in standard. Thanks

To BUILD more PONY POWER ya use the aluim. pistons the head from a 185 and the carb from a 185 andthe dist. if you do not have a dist. strobe to recurve the timing curve . That is how ya build a super cub.

 

[grandpa Love]

To BUILD more PONY POWER ya use the aluim. pistons the head from a 185 and the carb from a 185 andthe dist. if you do not have a dist. strobe to recurve the timing curve . That is how ya build a super cub.

And the manifold........the newer ones have slightly larger internal passages. ........can you explain your " strobe to recurve the timing curve" statement? How much difference is there between distributors? Maybe the internal springs?

 

[560Dennis]

What type of work you doing with this? Belt work ? Buzz saw fire wood , Gardening implements.
Got weights for it?
Can put a lot of money in an engine and not have much in return without everything else to set it up . Just a 12 hp tractor , maybe .

 

[Farmall M 248]

M and W made a couple different sets for a cub.

 

[used red MN]

M and W made a couple different sets for a cub.

Tell us where he is going to find those?

 

[the tractior vet]

And the manifold........the newer ones have slightly larger internal passages. ........can you explain your " strobe to recurve the timing curve" statement? How much difference is there between distributors? Maybe the internal springs?

Well first ya would need a Sun , Allied , Rotunda and i can't think of the other brands that use to set in every service bay of every dealership and the better gas stations that dotted this land , then ya would need the schooling to lean how to do it . then the next step is the proper service manual for what your working on for the RPM and Degree 's at that RPM AND IF IT IS A VAC AND SPRING ADVANCE OR JUST MECHANICAL. Not many of us OLD GOATS left who know how to do them and how to tweak them and push the envelope . I personally started back many moons ago during the 390-401 F E that went into my 61 Ford rag top . I bought a new 1050 Sun scope and a 504 Sun dist machine and ya got the schooling on how to use them in the deal . As i was going to learn the art of tuning myself since the whole build was kept top secret as what i was doing . I set out to build a F E block Ford that did not come apart over 6000 RPM and be the big dog on the weekends on the strip and street and keep it looking like MOM's car . Where i worked back then the owner of the company let me use what was once the Carpenter shop part of the main shop complex it was a 40 foot wide by 80 foot long bay with 20 foot ceilings and over head crane with a 10 ton main and a 3 ton aux. it also had a live oxy. line and live nat. gas and shop air heat lights and a man door from the outside and inter connecting door to the rest of the complex That allowed me access to everything the machine shops the parts room . The only operation i could not do in house was balance the crank that had to be sent out . We could turn cranks and weld them up and any other engine machine operation . That is where i learned how to do the things i can do . From all the OLD GUYS durning the winter slow season . Once frost was out of the ground it became dirt season and when not in school i was out in the dirt running the equipment and learning Winter months were for repair rebuild fix in the shop back then as a kid in highschool i made BIG money as i was a Union operator and one of just a few who were considered FULL time I even had a company truck that like the rest of the full timers could take it home if i wanted but rarely did as i kept it locked up in the Carpenter shop due to it being loaded with Mac tools and a full aray of OTC pullers and Special tools needed for big equipment repair like the 100 ton porta power for pulling the final drives apart on the dozers and the first hyd track pin press that was portable . No more two guys with a 20 # sledge beating there brains out driving out a track pin . Yep at times i did on job site repair . I had some cat schooling on the new power shift transmission and injection pump three days of twin disc and Detroit Cat and I H i learned from the OLD guys . Yep we had I H gas start switch to diesel but they were all the larger engines smallest being the ones in the few TD 9's . ALl the shovels and cranes ran Detroits, graders ran I H POWER WITH THE SMALLEST USEN A ud 14 and the largest a U D 24 Only had 8 Detroits in scraper pan's the rest of the pan fleet were Cats some old Dw series and the new 631 and 641's . Dozer wise Cat I H and A/C . Shove and crane just pick a flavor if it was not in one of three yards it was setting on a job site If it was a shovel and over a yard and a half it stayed till the job was done and the really big stuff was a major undertaking to move four to five days tear down and twenty truck loads to move plus the move of the crane used for tear down and set up I was involved in three of them being moved . From the time when i first started working there mowing grass cleaning the office and shop i had 9 years with that company and it all ended while i was in the service due to a union split and i was in the middle of the TET offensive of 68 and missed the book transfer grace . So we were on a job hunt when due to a cracked float in the carter model C AVS carb on my new one week old 68 Plymouth road runner and stopping by a Chrysler Plymouth dealer to get it fixed while on my way to a hot date with a FOX . I was standing in the door way of the service dept watch a guy haiving issues with a chrysler 300 with the 440 -350 and he could not figure out why he was having and issue after he just did a tune up and i am looking at the scope pattern on the 1050 Sun and like a mouse in the corner i scope up and said ya got the wrong plus in it and the service manager and him turned and looked at me like i had three heads and the service manager said HOW DO YOU KNOW THAT and i said i can see it in the scope pattern ya got resiztor wire and resistor plugs , swap out the R J 13 Y's ya got in there and go with a J9Y , they did and the car ran like a dream. the service manager said ya want a JOB So i went to work for them and took in all the chrysler Plymouth schooling got all the fancy patches to put on my WHITE shirt was Certified on the Hemi's and 440 -6 pac as in my area there was me a Jerry at the Dodge store that were and people said i could tune a hemi far better and on the new 440-6 pacs off the show room floor give me 45 mins and i would give you 1.5-7 lower ET thru the light with no fancy parts needed Just knowing what to do with them . my personall 68 Road runner would hang with a 440 375 and mine was just a 383 . A dealership that catered to the middle age to elderly over night wer4e selling Road runner GTX's and Cudas as my friends were flocking to them and getting good deals . Till the dqy my new 69 1/2 Road Runner 440-6 pac arrived the papper work was all signed and finance was done but the biss was on vacation and the GM would not let me have my car . he told me there was noway Jack would sell me that car for the price Jack and i agreed on . I have a temper and with that i looked at LEO and said FINE that car will grow a beard setting here and NOBODYis going to BUY IT you can take that to the bank and with that i went back out into the shop picked up my tools backed my car in and loaded up and left .

 

[used red MN]

strobe to recurve the timing curve" statement?

You ask for it, you got it, plus some. Well maybe plus a lot!!

 

[47fivewindow]

Well first ya would need a Sun , Allied , Rotunda and i can't think of the other brands that use to set in every service bay of every dealership and the better gas stations that dotted this land , then ya would need the schooling to lean how to do it . then the next step is the proper service manual for what your working on for the RPM and Degree 's at that RPM AND IF IT IS A VAC AND SPRING ADVANCE OR JUST MECHANICAL. Not many of us OLD GOATS left who know how to do them and how to tweak them and push the envelope . I personally started back many moons ago during the 390-401 F E that went into my 61 Ford rag top . I bought a new 1050 Sun scope and a 504 Sun dist machine and ya got the schooling on how to use them in the deal . As i was going to learn the art of tuning myself since the whole build was kept top secret as what i was doing . I set out to build a F E block Ford that did not come apart over 6000 RPM and be the big dog on the weekends on the strip and street and keep it looking like MOM's car . Where i worked back then the owner of the company let me use what was once the Carpenter shop part of the main shop complex it was a 40 foot wide by 80 foot long bay with 20 foot ceilings and over head crane with a 10 ton main and a 3 ton aux. it also had a live oxy. line and live nat. gas and shop air heat lights and a man door from the outside and inter connecting door to the rest of the complex That allowed me access to everything the machine shops the parts room . The only operation i could not do in house was balance the crank that had to be sent out . We could turn cranks and weld them up and any other engine machine operation . That is where i learned how to do the things i can do . From all the OLD GUYS durning the winter slow season . Once frost was out of the ground it became dirt season and when not in school i was out in the dirt running the equipment and learning Winter months were for repair rebuild fix in the shop back then as a kid in highschool i made BIG money as i was a Union operator and one of just a few who were considered FULL time I even had a company truck that like the rest of the full timers could take it home if i wanted but rarely did as i kept it locked up in the Carpenter shop due to it being loaded with Mac tools and a full aray of OTC pullers and Special tools needed for big equipment repair like the 100 ton porta power for pulling the final drives apart on the dozers and the first hyd track pin press that was portable . No more two guys with a 20 # sledge beating there brains out driving out a track pin . Yep at times i did on job site repair . I had some cat schooling on the new power shift transmission and injection pump three days of twin disc and Detroit Cat and I H i learned from the OLD guys . Yep we had I H gas start switch to diesel but they were all the larger engines smallest being the ones in the few TD 9's . ALl the shovels and cranes ran Detroits, graders ran I H POWER WITH THE SMALLEST USEN A ud 14 and the largest a U D 24 Only had 8 Detroits in scraper pan's the rest of the pan fleet were Cats some old Dw series and the new 631 and 641's . Dozer wise Cat I H and A/C . Shove and crane just pick a flavor if it was not in one of three yards it was setting on a job site If it was a shovel and over a yard and a half it stayed till the job was done and the really big stuff was a major undertaking to move four to five days tear down and twenty truck loads to move plus the move of the crane used for tear down and set up I was involved in three of them being moved . From the time when i first started working there mowing grass cleaning the office and shop i had 9 years with that company and it all ended while i was in the service due to a union split and i was in the middle of the TET offensive of 68 and missed the book transfer grace . So we were on a job hunt when due to a cracked float in the carter model C AVS carb on my new one week old 68 Plymouth road runner and stopping by a Chrysler Plymouth dealer to get it fixed while on my way to a hot date with a FOX . I was standing in the door way of the service dept watch a guy haiving issues with a chrysler 300 with the 440 -350 and he could not figure out why he was having and issue after he just did a tune up and i am looking at the scope pattern on the 1050 Sun and like a mouse in the corner i scope up and said ya got the wrong plus in it and the service manager and him turned and looked at me like i had three heads and the service manager said HOW DO YOU KNOW THAT and i said i can see it in the scope pattern ya got resiztor wire and resistor plugs , swap out the R J 13 Y's ya got in there and go with a J9Y , they did and the car ran like a dream. the service manager said ya want a JOB So i went to work for them and took in all the chrysler Plymouth schooling got all the fancy patches to put on my WHITE shirt was Certified on the Hemi's and 440 -6 pac as in my area there was me a Jerry at the Dodge store that were and people said i could tune a hemi far better and on the new 440-6 pacs off the show room floor give me 45 mins and i would give you 1.5-7 lower ET thru the light with no fancy parts needed Just knowing what to do with them . my personall 68 Road runner would hang with a 440 375 and mine was just a 383 . A dealership that catered to the middle age to elderly over night wer4e selling Road runner GTX's and Cudas as my friends were flocking to them and getting good deals . Till the dqy my new 69 1/2 Road Runner 440-6 pac arrived the papper work was all signed and finance was done but the biss was on vacation and the GM would not let me have my car . he told me there was noway Jack would sell me that car for the price Jack and i agreed on . I have a temper and with that i looked at LEO and said FINE that car will grow a beard setting here and NOBODYis going to BUY IT you can take that to the bank and with that i went back out into the shop picked up my tools backed my car in and loaded up and left .

The place is not the same with out you, Vet. Thanks for your thoughts.

 

[grandpa Love]

Well first ya would need a Sun , Allied , Rotunda and i can't think of the other brands that use to set in every service bay of every dealership and the better gas stations that dotted this land , then ya would need the schooling to lean how to do it . then the next step is the proper service manual for what your working on for the RPM and Degree 's at that RPM AND IF IT IS A VAC AND SPRING ADVANCE OR JUST MECHANICAL. Not many of us OLD GOATS left who know how to do them and how to tweak them and push the envelope . I personally started back many moons ago during the 390-401 F E that went into my 61 Ford rag top . I bought a new 1050 Sun scope and a 504 Sun dist machine and ya got the schooling on how to use them in the deal . As i was going to learn the art of tuning myself since the whole build was kept top secret as what i was doing . I set out to build a F E block Ford that did not come apart over 6000 RPM and be the big dog on the weekends on the strip and street and keep it looking like MOM's car . Where i worked back then the owner of the company let me use what was once the Carpenter shop part of the main shop complex it was a 40 foot wide by 80 foot long bay with 20 foot ceilings and over head crane with a 10 ton main and a 3 ton aux. it also had a live oxy. line and live nat. gas and shop air heat lights and a man door from the outside and inter connecting door to the rest of the complex That allowed me access to everything the machine shops the parts room . The only operation i could not do in house was balance the crank that had to be sent out . We could turn cranks and weld them up and any other engine machine operation . That is where i learned how to do the things i can do . From all the OLD GUYS durning the winter slow season . Once frost was out of the ground it became dirt season and when not in school i was out in the dirt running the equipment and learning Winter months were for repair rebuild fix in the shop back then as a kid in highschool i made BIG money as i was a Union operator and one of just a few who were considered FULL time I even had a company truck that like the rest of the full timers could take it home if i wanted but rarely did as i kept it locked up in the Carpenter shop due to it being loaded with Mac tools and a full aray of OTC pullers and Special tools needed for big equipment repair like the 100 ton porta power for pulling the final drives apart on the dozers and the first hyd track pin press that was portable . No more two guys with a 20 # sledge beating there brains out driving out a track pin . Yep at times i did on job site repair . I had some cat schooling on the new power shift transmission and injection pump three days of twin disc and Detroit Cat and I H i learned from the OLD guys . Yep we had I H gas start switch to diesel but they were all the larger engines smallest being the ones in the few TD 9's . ALl the shovels and cranes ran Detroits, graders ran I H POWER WITH THE SMALLEST USEN A ud 14 and the largest a U D 24 Only had 8 Detroits in scraper pan's the rest of the pan fleet were Cats some old Dw series and the new 631 and 641's . Dozer wise Cat I H and A/C . Shove and crane just pick a flavor if it was not in one of three yards it was setting on a job site If it was a shovel and over a yard and a half it stayed till the job was done and the really big stuff was a major undertaking to move four to five days tear down and twenty truck loads to move plus the move of the crane used for tear down and set up I was involved in three of them being moved . From the time when i first started working there mowing grass cleaning the office and shop i had 9 years with that company and it all ended while i was in the service due to a union split and i was in the middle of the TET offensive of 68 and missed the book transfer grace . So we were on a job hunt when due to a cracked float in the carter model C AVS carb on my new one week old 68 Plymouth road runner and stopping by a Chrysler Plymouth dealer to get it fixed while on my way to a hot date with a FOX . I was standing in the door way of the service dept watch a guy haiving issues with a chrysler 300 with the 440 -350 and he could not figure out why he was having and issue after he just did a tune up and i am looking at the scope pattern on the 1050 Sun and like a mouse in the corner i scope up and said ya got the wrong plus in it and the service manager and him turned and looked at me like i had three heads and the service manager said HOW DO YOU KNOW THAT and i said i can see it in the scope pattern ya got resiztor wire and resistor plugs , swap out the R J 13 Y's ya got in there and go with a J9Y , they did and the car ran like a dream. the service manager said ya want a JOB So i went to work for them and took in all the chrysler Plymouth schooling got all the fancy patches to put on my WHITE shirt was Certified on the Hemi's and 440 -6 pac as in my area there was me a Jerry at the Dodge store that were and people said i could tune a hemi far better and on the new 440-6 pacs off the show room floor give me 45 mins and i would give you 1.5-7 lower ET thru the light with no fancy parts needed Just knowing what to do with them . my personall 68 Road runner would hang with a 440 375 and mine was just a 383 . A dealership that catered to the middle age to elderly over night wer4e selling Road runner GTX's and Cudas as my friends were flocking to them and getting good deals . Till the dqy my new 69 1/2 Road Runner 440-6 pac arrived the papper work was all signed and finance was done but the biss was on vacation and the GM would not let me have my car . he told me there was noway Jack would sell me that car for the price Jack and i agreed on . I have a temper and with that i looked at LEO and said FINE that car will grow a beard setting here and NOBODYis going to BUY IT you can take that to the bank and with that i went back out into the shop picked up my tools backed my car in and loaded up and left .

What the heck did I just read???? I thought we were talking about a Cub??? My head hurts...... good grief .

 

[grandpa Love]

The place is not the same with out you, Vet. Thanks for your thoughts.

I'm glad he was so helpful and insightful on your Cub

 

[grandpa Love]

You ask for it, you got it, plus some. Well maybe plus a lot!!

I dunno what I just read??? I don't think it has anything to do with a cub??. It was entertaining

 

[EFV]

Could you angle mill the head for increased compression or would heat crack
an original grey iron head ? Low compression engines show power increases quicker
than high ones .
Have seen lots of those scopes sold at auction over the years. They sell cheap because like
the Vet says nobody can operate them. Must be a YouTube video out there.

 

[rustred]

What the heck did I just read???? I thought we were talking about a Cub??? My head hurts...... good grief .

He answered your question on dist curves. Like he said you’ll need schooling. Lol.

 

[used red MN]

Could you angle mill the head for increased compression or would heat crack
an original grey iron head ? Low compression engines show power increases quicker
than high ones .
Have seen lots of those scopes sold at auction over the years. They sell cheap because like
the Vet says nobody can operate them. Must be a YouTube video out there.

Angle mill a head on 60 cubic inch12 hp flat head tractor engine? That’s a trick for old technology V8 performance cylinder heads. The “trick cards” some guys pull out of their deck on here is amazing.