Post up your ported cylinder Artwork

[Lightning Performance]

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Advertised compression?
200 club?

 

[huskihl]

Looks like a 394 - are you gonna go with one of Diamond Dave's custom pistons when he gets the next batch?

I am using one of his in my own buildoff saw, but this one is for a tree guy fella in Montana. It needed a pretty healthy going through

 

[huskihl]

Advertised compression?
200 club?

Got no idea. I always figured if you needed to check compression that you didn’t have enough lol.
Actually, I have a hard time telling which tester is right or if either one is right. I have two that always read 10 to 15 psi apart, and then when the valves go bad, it’s hard to tell. So I kinda gave up on them
I’d say it’s between 190 and 220.

 

[Lightning Performance]

Far from art but this is how they all start, getting lighter buy the minute.
Not much taken out... just enough to move air along nicely. The 361 jug for clean up. Did not move any of the port heights. Most of these are near 130 or more transfers so no need to move the exhaust if your not moving the transfers. The intake was reshaped for a better aproach. Just ruffed in with a new grabby burr.
Tried some pics in the sun and in shade.

 

[Lightning Performance]

Might use one smaller burr than finish with a stone ball and hard rolls. My pics may suck let me know if they do. I try....


The floor is barely touched in the exhaust. Transfer divider needs to be thined a bit. This burr won't fit. Took back the bump near the port entry for improved flow. Not much just a bit all the way across. Needs to be blended at the corners and down to the port.

 

[Lightning Performance]

The intake port was just reshaped from the boot to the bottom corners. Casting flash was also removed before today. The corners were not raised or widened. These intake windows are plenty from the factory. The boot is the choke point in there.

 

[Termitebuffet]

Ms460 jug done a little differently then my typicalView attachment 228908View attachment 228909View attachment 228910

Absolutely nothing wrong with testing of shapes and angles...great looking work as always...

Sent from a baked potato...

 

[Wolverine]

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Is it my phone or does that cyl-ie have a bunch of pitting in the plating?

 

[Lightning Performance]

Is it my phone or does that cyl-ie have a bunch of pitting in the plating?

I see pot marks all over. Two holes next to the intake right through the plating. Looks like a factory bubble got popped in the casting before plating.

 

[huskihl]

Is it my phone or does that cyl-ie have a bunch of pitting in the plating?

It’s lint and bubbles from spray oil on a rag

 

[huskihl]

 

[huskihl]

Is it my phone or does that cyl-ie have a bunch of pitting in the plating?

The new meteor piston came in today so I pulled the cylinder back apart to make some timing changes if needed and I wanted to look at what we were seeing in those pictures just to make sure. The piston pic is so the owner knows it’s running a 395 piston, as it was before. The intake has been cleaned up since I posted the original pics, but I didn’t post an intake picture earlier as I wasn’t done with it yet. I don’t believe there’s any pitting at all in it, pretty sure it was just dust off the paper towel. Like I said, these are immediately after pulling the cylinder off and putting the new piston on. I didn’t touch anything inside with a rag, just to be able to see what we were looking at. Thanks for bringing it up though. There can definitely be things hiding out inside that you can’t see with the naked eye, but can focus and zoom in on with the camera

 

[Lightning Performance]

The new meteor piston came in today so I pulled the cylinder back apart to make some timing changes if needed and I wanted to look at what we were seeing in those pictures just to make sure. The piston pic is so the owner knows it’s running a 395 piston, as it was before. The intake has been cleaned up since I posted the original pics, but I didn’t post an intake picture earlier as I wasn’t done with it yet. I don’t believe there’s any pitting at all in it, pretty sure it was just dust off the paper towel. Like I said, these are immediately after pulling the cylinder off and putting the new piston on. I didn’t touch anything inside with a rag, just to be able to see what we were looking at. Thanks for bringing it up though. There can definitely be things hiding out inside that you can’t see with the naked eye, but can focus and zoom in on with the camera

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Looks good.

So your going to be running a 395 piston in a 394, correct?

 

[Wolverine]

Looks good.

So your going to be running a 395 piston in a 394, correct?

#metoo. Has to do with ring pin location.

The new meteor piston came in today so I pulled the cylinder back apart to make some timing changes if needed and I wanted to look at what we were seeing in those pictures just to make sure. The piston pic is so the owner knows it’s running a 395 piston, as it was before. The intake has been cleaned up since I posted the original pics, but I didn’t post an intake picture earlier as I wasn’t done with it yet. I don’t believe there’s any pitting at all in it, pretty sure it was just dust off the paper towel. Like I said, these are immediately after pulling the cylinder off and putting the new piston on. I didn’t touch anything inside with a rag, just to be able to see what we were looking at. Thanks for bringing it up though. There can definitely be things hiding out inside that you can’t see with the naked eye, but can focus and zoom in on with the camera

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Looks awesome, as usual. Countless times I’ve thought I had a great cutter filed just right to post a pic of. Zoom in with my camera, snap the pic then look at it and see all kinda wrong.
Made me wonder because I have a 394 cyl here with damaged plating. A bunch of little circles missing but wouldn’t really call it pitting.

 

[Lightning Performance]

#metoo. Has to do with ring pin location.





Looks awesome, as usual. Countless times I’ve thought I had a great cutter filed just right to post a pic of. Zoom in with my camera, snap the pic then look at it and see all kinda wrong.
Made me wonder because I have a 394 cyl here with damaged plating. A bunch of little circles missing but wouldn’t really call it pitting.

Send that junk here... you don't want that old jug.

 

[Lightning Performance]

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Oversize 361

 

[TreeLife]

Not my porting, but my cylinder for my 572. Not quite complete but well on its way.

 

[huskihl]

Looks good.

So your going to be running a 395 piston in a 394, correct?

10-4. Not sure about the compression height, but the ring pins are over the intake rather than the corners and I believe the skirt is just a hair shorter on them

 

[huskihl]

#metoo. Has to do with ring pin location.





Looks awesome, as usual. Countless times I’ve thought I had a great cutter filed just right to post a pic of. Zoom in with my camera, snap the pic then look at it and see all kinda wrong.
Made me wonder because I have a 394 cyl here with damaged plating. A bunch of little circles missing but wouldn’t really call it pitting.

Honestly, we as saw nuts probably think too hard about this stuff. Little pick marks out in the middle of the bore probably don’t hurt anything except for a little compression. Totally different scenario though when you have bad areas above and below the transfers and exhaust that might peel away

 

[huskihl]

Oversize 361

Pretty much, except it is fed from the front