More ph out of farmall H

Rustyparts · May 6, 2014

I have a farmall H that needs to be over haul and l would like
to get a little more hp out of it at the same price as stock parts
would be. Dose any one know if I could make a C-164 engine
super H out of my stock C-152 H engine or is there a better
route to go.

Anonymous-0 · May 6, 2014

I know you can put what is called fire dome pistons in your old engine and it will raise the HP quite a bit.

PretendFarmer · May 6, 2014

You can put 300 sleeves and pistons in.

mkirsch · May 7, 2014

Cover it with lime.

Oh you meant HP?

You will get a little more, probably a LOT more, just by overhauling the engine, period. It's definitely way-way down on power now.

Most of your rebuild kits are overbore kits that will bring you up to, I think, 164 CID. I'm not sure you can even purchase a stock bore kit for an H in this day and age.

You don't need "fire dome" or "fire crater" pistons specifically. Any "stepped head" style piston will do. Like:

http://www.yesterdaystractors.com/F...52-Gas-Stepped-Head-Pistons_BEKH1156ALCB.html

dej(Jed) · May 7, 2014

(quoted from post at 19:07:24 05/06/14) I have a farmall H that needs to be over haul and l would like
to get a little more hp out of it at the same price as stock parts
would be. Dose any one know if I could make a C-164 engine
super H out of my stock C-152 H engine or is there a better
route to go.

You can get more HP out of an H by removing the radiator cap and driving an M under the cap.

D Slater · May 7, 2014

If sticking with the same block, some options.
See if the H block bore is good enough to fit 3-9/16 pistons form a overbore SH or standard bore 300 engine with filler rings in the counter bore. Use the 300, 350 head gasket. Bore the block about 1/16 and put 3-5/8 dia. 350 pistons in.
Bore H block about 1/8 bigger and use SH sleeves. Bore H about 3/16 bigger and use 300 and 350 3-5/8 piston and sleeve set.
Depending on the block, some may run into trouble with the last two options.

ALMoyer · May 7, 2014

Jed, Liked your resposnse, made me chuckle

ss55 · May 7, 2014

If you are looking for a lot of horsepower, you might try asking this question on the "Tractor Pulling" forum, or search the archieves.

A C-175 engine out of a 350 should bolt into your H. I think the utility 350's ran at a higher rpm (2000?) and HP than the Farmall version.

At over 60 years old, your H has probably been overhauled before, so it may already have over sized pistons. It wouldn't hurt to check the cam lobes and have them reground to specification. You might be able to have the cam re-ground to 350 utility specs and then change your governor spring and re-curve the distributor to get 350 rpms. You would have to throttle back to keep your PTO speed at 540 rpm.

hghrdnhck · May 7, 2014

300/350 pistons, fire crater pistons, m carb, 300/350 lp head. Or have someone port and polish your head

Anonymous-0 · May 7, 2014

A dyslexic walks into a bra......

Rusty parts · May 7, 2014

Thank you all for the valuable information

caterpillar guy · May 7, 2014

If you're looking for to much more. You need to just go buy the HP you need. It will be much more rewarding than working an H to death, over powering it.

Rustyparts · May 7, 2014

This is true I have a John Deere 60 for some of the heavy work. The H came from the family farm and I was just looking to restore it.i was looking to increase the HP for the same money I wasn't going to get crazy with it but I do appreciate all of the helpful hints and good tips. Thanks again to all

D Slater · May 7, 2014

Thin wall sleeve rebuild kit will give you a 3-7/16 piston size and around 158 CI. If the tractor was rebuilt in the last 40 years it probably is already that size.
If just rebuilding with regular rebuild parts make sure you have a gasoline head.

More ph out of farmall H

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