Push rod material

bigrob

bigrob

#1
#1
Here is a question for you engine guys

I am rebuilding a honda qa50 engine from spare parts

The only thing I am missing is the push rods

I think I can cut some new ones and round/ polish the ends on my lathe

Do you think 3/16 drill rod would be suitable ?
I am most concerned about hardness and the drill rod is water or oil hardened

The lenght is not to hard to measure with the engine partialy mocked up
 
paulhew

paulhew

New Member
#2
#2
For sure !! I would just harden the tips I've seen them made out of tube aluminum with hardened inserts :thumbsup:

edit: as long as 3/16" is your close to the original dia.
 
Last edited:
bigrob

bigrob

#3
#3
Thanks for the reasurance Paul

I picked a three foot piece of 5mm oil hardend rod today actualy got it for free from a supplier that I use a lot for work

To reharden the tips is heated cherry red then queinched in oil or water ok ?
 
paulhew

paulhew

New Member
#5
#5
I would just use clean oil, (that's all I've ever used ) heat up till cherry and starts to sparkle and quench.
And im sure you know radius the tips before you harden... LOL
I love those qa50's... I hear they have incredible torque for the size!!
 
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