Post up your ported cylinder Artwork

[Robert Krogh]

Well....

You do beautiful work.

I guess you must take a lot out of the squish band to set static compression comparable to sea level builds.

Thank you for the kind words! Yes, i definitely look to maximize compression while still maintaining long term reliability. Saws really struggle up here and an increase in compression and ignition timing help alot.

 

[huskyboy]

Thank you for the kind words! Yes, i definitely look to maximize compression while still maintaining long term reliability. Saws really struggle up here and an increase in compression and ignition timing help alot.

I bet you don’t have to drill any carburetors at that elevation!

 

[Robert Krogh]

@Robert Krogh

Boy did you hit the nail on the head man. Too many professionals aren't professional.... as a general rule. Finding the guys that really take pride in what they do is quite the task.

One thing to consider is that the polishing doesn't necessarily lead to a super running saw....but if a saw runs like crap and you see a carefully done head....you are gonna be much more likely to give the builder leeway because they really put the hours in. Its the saws that run like crap that look like crap internally that cause all the fuss lol.

I cant match what you do. ( ...and i grind on teeth for a living lol.) Congrats on setting the bar higher for pros and diyers alike

You are absolutely right! Surface finish is the least important feature, the only port I polish is the exhaust. I finish intake and transfer ports with a stone at low RPM to keep them from loading up. I believe that if you are going to promote yourself as a professional and invoice accordingly, than you should be able to do it all. The system starts at the air cleaner and finishes at the exhaust deflector. A property ballanced system will run amazing with lack luster finishing but if I pay a premium than I expect some attention to detail.

 

[Robert Krogh]

I bet you don’t have to drill any carburetors at that elevation!

LOL! Some day I'll build a saw that needs more carb at 10,000' but i haven't done it yet

 

[Ketchup]

The elevation thing is something I’ve thought about, as I also live up high.
Here’s my thinking:
Bigger carb bore = more volume. That’s what you need at elevation because there’s less oxygen in the same volume of air. Not loads of experience, but I have found 359 carb on 346 or 390 carb on 372 add rpm at elevation.

My experiments with timing advance have been inconclusive. @Robert Krogh, are you advancing 346 and 372 for your elevation?Generally those models don’t see much benefit from advance after porting.

Really nice symmetry and finish on your porting!

 

[Wisconsin Welder]

First saw I ported/built, almost 2 years ago. 044, the port MAY have been a little big, but the thing screamed. It was later stolen............

 

[Bigmac]

Working on a Trx250r, 390 big bore stroker,it’s a ceo, dish piston inverted squish band, I will get some dyno time for this one, should be fun...intake tract, still some mods to go. Hoping to make some good all around power

 

[redlight066]

Lil’l 462 today. After base cut without gasket numbers 86 /124,127/102.5. Ended up at 86/121/99 and .020 squish. That lip definitely is a pain to get flush and not marr the machine finish on the base. Scott’s saw vise is a real treat to have. It gets used everyday.

 

[Moparmyway]

 

[Ketchup]

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I wish I could see the uppers that well while grinding!

 

[huskihl]

 

[BonScott46]

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Wild guess...Husky 55?

 

[huskihl]

Wild guess...Husky 55?

Close! Lol

394xp

 

[BonScott46]

Close! Lol

394xp

Lol I was going off the way the muffler bolts up to the cylinder.

 

[redlight066]

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Excellent work sir

 

[ManiacalMark]

I wish I could see the uppers that well while grinding!

Wish I could take a picture that good

 

[Ronie]

Trying to make a fun 346 with these numbers, EX 102, TR 125/122, IN 79 and a .040 pop up. Hope them numbers will do it.

 

[David Young]

Trying to make a fun 346 with these numbers, EX 102, TR 125/122, IN 79 and a .040 pop up. Hope them numbers will do it.

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should run well, nice job

 

[Ronie]

should run well, nice job

Thanks! After doing the exhaust, I started having second thoughts on making it so high.

 

[Redfin]