Whats in the Big Bore kits?

[rickyrace]

Had no responses in the Big Bore Forum so I will try here.<br /><br />Newby to the forum and bike. I apologize if this has been covered in the past. I am going to rebuild my Grandfathers 1965 CB77 305 Honda Superhawk. It will just see occasional riding time but I would like to get a little more punch out of the motor if it doesn't break the bank$$. <br />?Questions, What parts come in the big bore kits and who sells them? What are the different size options in big bore kits? Can I put together my own big bore parts? Can I use the same (stock) cylinder sleeves with boring of course? What carb jetting changes are you doing with the bigger bore?<br />Thanks in advance for the info.<br />Rick.

[LOUD MOUSE]

The kits were discontinued many years back so they are seldom seen. I have a cylinder and pistons here that were in a CB77 I rebuilt but put back the factory size. I may sugest that you think of these small bore engines as just that and keep in mind that the days of stopping at a red light next to a BSA or Triumph or other 300cc bike are long gone. I ride my 1963 CB77 on the beautiful highways here in the Texas Hill Country and it goes 60/70 anywhere I want it to. ..........LM

[rickyrace]

Thanks for the reply. What I am finding out is that it would be safe to bore the stock sleeves of a 305 to fit 63mm pistons. If so that would bring up the motor to about 337cc's. I need to bore and hone the cylinders anyway so might as well go for the gusto. (if you want to call 337cc's gusto) .<br />Rick.

[LOUD MOUSE]

Have fun. .......LM

[rickyrace]

Loudmouse, do you sell parts and/or work on these bikes? Is this business or a hobby for you?<br />Rick.

[LOUD MOUSE]

It is a hobby and I do sell some parts at times.<br />I'm shipping my 9th engine out and have 3 others on site and last year I did 12 engines. .....................LM

[rickyrace]

<br />It is a hobby and I do sell some parts at times.<br />I'm shipping my 9th engine out and have 3 others on site and last year I did 12 engines. .....................LM<br />

<br /><br />LM, do you charge hourly or by the job. How much would I expect to pay parts and labor for a top end rebuild on my 305 motor? Valve Job, Oversized pistons, Boring, Honeing, and gaskets.<br />Rick.