Ronda the 1963 C100

[Hunterkiwi01]

I bought this honda c100 a couple of days ago for $500. It's my first real project bike that I have owned. (My younger sister named it Ronda because it's a honda obviously)

[GregT]

Spare bottom end in a beer crate, Traditional.  Going to rebuild the Honda or go Lifan ?  If you split the engine(s) i'm happy to come and assess/advise.

[Doug Hill]

That looks perfect, very swish!

If you don't use the original pushtod motors I'd be happy to buy them off you

[Hunterkiwi01]

I am for now but might swap later.

[Hunterkiwi01]

15 hours ago, GregT said:

Spare bottom end in a beer crate, Traditional.  Going to rebuild the Honda or go Lifan ?  If you split the engine(s) i'm happy to come and assess/advise.

I think it would be cool to rebuild the 50. The thought process is at least build a good bottom end.

[GregT]

45 minutes ago, Hunterkiwi01 said:

I think it would be cool to rebuild the 50. The thought process is at least build a good bottom end.

First step is split what you have and assess. Pretty sure rod kits can be found.

[Doug Hill]

You can basically get everything from Malcolm at Anaconda. Be aware when buying stuff on line that the pushrod motors are entirely different to the OHC units, even the rotating assembly 

[Hunterkiwi01]

Oh ok. This is the first motor rebuild so I appreciate all the help I can get. I have been doing some research on pushrod motors and I've become more and more confused

[Doug Hill]

They're about as simple as a 4 stroke gets, perfect place to start. 

[GregT]

Got a workshop manual ?  They can frequently be found free online to download.

[Mop Head]

Schematics here: https://www.cmsnl.com/honda-c100-japan_model50708/partslist/

Service manual download (if you login): https://4-stroke.net/131-honda/honda-c100/downloads/438-honda-c100-service-manual.html

Workshop manual: https://4-stroke.net/download/workshop-manual/1011-workshop-manual-for-honda-c100-1961.html

I just created an account on that site and the downloads legitimately work. Can download 5 documents a day on 4-stroke.net

Good luck!

[Hunterkiwi01]

1 hour ago, Mop Head said:

Schematics here: https://www.cmsnl.com/honda-c100-japan_model50708/partslist/

Service manual download (if you login): https://4-stroke.net/131-honda/honda-c100/downloads/438-honda-c100-service-manual.html

Workshop manual: https://4-stroke.net/download/workshop-manual/1011-workshop-manual-for-honda-c100-1961.html

I just created an account on that site and the downloads legitimately work. Can download 5 documents a day on 4-stroke.net

Good luck!

Thanks this will come in handy.

[felixx]

One of the studs holding thr barrel on is rusted. We will hit it with a blowtorch tomorrow. 

How much heat is too much???

[Raizer]

14 minutes ago, felixx said:

One of the studs holding thr barrel on is rusted. We will hit it with a blowtorch tomorrow. 

How much heat is too much???

You'll want to get a good bit of heat into it but if it turns into a liquid, that was too much. 

 

 

[GregT]

Give it a soak in atf/acetone mix first.

[Hunterkiwi01]

Will give it a go. I got some penetrating oil and it did shit all so I'll give that a go and put up a photo

[Hunterkiwi01]

Me and @felixx used a heat old kerosine powered heat gun to wiggle the piston and head  off. Worked a treat had it taken apart in about 30 mins.

[Hunterkiwi01]

This is the piston. I am wanting to re use but not sure about condition. I there are wear marks but nothing that can catch a fingernail. I am going to replace the rings.

[GregT]

Good enough for government work.

[Hunterkiwi01]

Just got a gasket kit