Best tool for working on transfers inside cylinder

[bjorn773]

I'm getting ready to match my transfer at the cylinder base with the gasket. It seems like there is a ton of material that could be removed to match these. The crankcase matches the opening of the gasket exactly. Seems like the factory would have matched these better, or am I missing something?

 

[AUSSIE1]

I'm getting ready to match my transfer at the cylinder base with the gasket. It seems like there is a ton of material that could be removed to match these. The crankcase matches the opening of the gasket exactly. Seems like the factory would have matched these better, or am I missing something?

I don't know why they do this but it's common across a few models.
Everyone is different, but I use the base gasket as a template to match the lowers to the cases. You don't have to go deep into the transfers, just common sense blending. I even remove that little bit of cyl till it comes around and meets up with the gasket. To me that step isn't in flows best interest. They really should have matched the cases to the base a little better. My saws certainly haven't suffered from it.

 

[bjorn773]

The 365 didn't have nearly as much material to blend in, it was a lot closer fit right from the factory. I'll start working on it and post my progress. Thanks.

 

[7oaks]

What are you removing

Bjorn...

I'm not a porter/modifier but because there is so much discussion on this topic I'm trying to follow it and learn the concept at least.

Sooooo...I've marked up your picture. Are you talking about removing the material I have marked in red?

 

[7oaks]

The problem with abrasive cutting wheels or discs is that they load up with aluminum too easily
Pioneerguy600

On my belt sander and bench grinder I have learned to use the sole of an old tennis shoe to clean up the grinding surfaces. Haven't tried this with the dremel.

 

[noremi]

I just received my aftermarket 346 P&C today. The transfer port castings in the cylinder leave a lot to be desired. I can only think of two ways to tackle this.

One, get some sort of 90 deg. adapter for my dremel. The model I see advertised is way too big to handle this delicate task.

Two, use a very small abrasive wheel. The wheels I have are 1 inch diameter, so I may have to grind them down a bit to get into the port. What do you guys use?

Why did you go with aftermarket? Was it because of price or are they comparable to oem? I have a 262 and i need a p&c and they are asking 300.00 for oem. So im probably going with getting aftermarket. What brand did you go with? Sorry to get you off track.

 

[bjorn773]

Bjorn...

I'm not a porter/modifier but because there is so much discussion on this topic I'm trying to follow it and learn the concept at least.

Sooooo...I've marked up your picture. Are you talking about removing the material I have marked in red?

yes, that's exactly where I am talking about removing material. The idea is to maximize flow, so if the crankcase is open in these spots, it stands to reason that the excess casting on the cylinder will cause a restriction in flow. I will remove the material to blend these areas into the transfer port.

 

[bjorn773]

Why did you go with aftermarket? Was it because of price or are they comparable to oem? I have a 262 and i need a p&c and they are asking 300.00 for oem. So im probably going with getting aftermarket. What brand did you go with? Sorry to get you off track.

I went aftermarket because it was $100. I planned on porting anyway, so the lesser quality porting of the aftermarket is not as big a concern. If you don't plan to port or at least clean up the casting, I would think twice about going with aftermarket.

 

[7oaks]

Thanks for helping me understand.

 

[CHEVYTOWN13]

The only tool I have in this dept. is a dremel.

Someday I'd like to have a C.C. (Rider--member that movie!?!) porting kit. Or like the porting tool Bob posted. Expensive, but worth every penny I'm sure.

Until then, dremel it is. Steady hands and rapid eye movement for me.

 

[AUSSIE1]

Bjorn...

I'm not a porter/modifier but because there is so much discussion on this topic I'm trying to follow it and learn the concept at least.

Sooooo...I've marked up your picture. Are you talking about removing the material I have marked in red?

I take that little bit of cyl back to the gasket also.

 

[7oaks]

Al...I've marked up the photo again (this time in yellow) to ask if that is the additional portion of the cyl you'd grind off?

 

[AUSSIE1]

Yeah mate, that's it.