California Motorbikes Minarelli Modification Log.

[Deleted member 35519]

Here you find a building log various modifications to the Cmb Minarelli. I will be posting several photos to see the progress.

Tonight I will be porting the bottom crank end. Top end cylinder was ported by hand previously. This is completely a Wildcat PK 80 bottom end. The same which you see off classic Skyhawks.

I will be opening the wells for fuel transfer then sanding out roughness and polishing off with some Dremel work

 

[Deleted member 35519]

Porting near complete.

 

[Deleted member 35519]

Almost perfect needs a little more work then the cylinder well areas will be opened up more for the bottoms fuels transfer.

 

[Deleted member 35519]

Got a little too close to the case and had a pinhole leak. Welded. First time with a MiG... Huge learning experience. Now soaking yo clean all the metal shavings with fuel.

 

[Chainlube]

You know you don't have to trench out the case that much to port match to your adaptor plate. You only have to smooth out the transition area a bit to improve air flow.

 

[Deleted member 35519]

You know you don't have to trench out the case that much to port match to your adaptor plate. You only have to smooth out the transition area a bit to improve air flow.

Yeah lol but if it works just imagine even better flow. We shall see lol.

 

[Chainlube]

Yeah lol but if it works just imagine even better flow. We shall see lol.

Oh it will work, that's for sure. My OCD would have me do less grinding and more polishing. 500, 1000, 1500 type of thing.

 

[Deleted member 35519]

Oh it will work, that's for sure. My OCD would have me do less grinding and more polishing. 500, 1000, 1500 type of thing.

Definitely. Don't just first try lol. Getting there.

 

[Deleted member 35519]

Call this excessive but this is ceramic coating, high temp. I dunno if this would help with heat displacement but who knows.

 

[Deleted member 35519]

Ordered 46-48mm hone to hone the cylinder after work tomorrow.

Amazon.com

Pistons drop fine but this is to make sure break-in is extra smooth. From what I read it helps with the seizes between Aliminum pistons to cast iron. It will be a bit excessive to oil and sand her but it's probably worth it.