Porting a unicorn

[Time's Standing Stihl]

Try smuggling. It's tough too! They get all frisky with me!

 

[jmssaws]

Looks like somebody learned how to keister

 

[Hinerman]

It's tired from doing actual work, the other 2 just cut cookies.

Looks like the husqy is bowing in reverence.

 

[drf256]

Something tells me this saw will have a gallon or two of mix run through it a at the GTG.

I've got a really nice Tsumura 28" .404 to put on it.

IRONICALLY, I bought the bar and chain off of Redbull661.

 

[Al Smith]

That's a no *s-wordter about Canada post .My Lawdy the pony express was faster .I can get stuff to Australia in 4 days,west coast or Florida in three .

I sent a couple boxes to "Timber Wolf" AKA Brian in Ont.Canada ,lathe tooling etc .and it took two weeks and it's only about 250 miles .

I got some Mac parts from Mike Acres and he had his friend ship them out of Washington state to cut through the red tape of Canada post .Plus it was a darned sight cheaper .

 

[Keith Gandy]

Looks like the husqy is bowing in reverence.

 

[jmssaws]

Who else besides me thinks it will gain by raising the exhaust to 100 or 101?

 

[Moparmyway]

Who else besides me thinks it will gain by raising the exhaust to 100 or 101?

I do

 

[Mattyo]

how would you raise the exhaust back up? drop the cylinder... but then you'd need some jbweld on the intake....

 

[mdavlee]

Raising the exhaust is easy. Lowering it is what's more of a pain.

 

[Redfin]

2 piece head is the only other way

Ive heard those take forever to make.

 

[srcarr52]

Looks like the husqy is bowing in reverence.

It fell over laughing at all you Stihl supremacists.

 

[srcarr52]

Who else besides me thinks it will gain by raising the exhaust to 100 or 101?

You'll just make it the same as any other early 066 cylinder.

 

[jmssaws]

You'll just make it the same as any other early 066 cylinder.

Agreed that it is different but we both know it will gain at 100 or 101.
Not rpm but power,it will tune past 15k
Strange how the lower I get a exhaust the faster they spin.
I build lots at 98-99 that won't tune as fast.

Makes me think there's more to it than exhaust height.

 

[srcarr52]

Agreed that it is different but we both know it will gain at 100 or 101.
Not rpm but power,it will tune past 15k
Strange how the lower I get a exhaust the faster they spin.
I build lots at 98-99 that won't tune as fast.

Makes me think there's more to it than exhaust height.

I think max RPM is more of a function of transfer, sometimes you can help the transfers with more exhaust duration, sometimes if the transfers are working really well more exhaust duration will hurt max RPM.

 

[drf256]

Smaller gulps J, same displacement, same max flow=rpm

 

[Redfin]

The thing good about one is the exhaust is at 103 with less than 200lbs of compression and a a decent intake duration.

103 123 80 with 195lbs of compression,not gonna here that much.

About the only thing you could do that would be easy to fix is give it some more intake.

Edit: Or take some.

 

[Deets066]

Ive heard those take forever to make.

Yes, bout 10-12 months.

But, apparently he was suppose to be boxing it up yesterday.

 

[jmssaws]

This doesn't feel held back like it needs the exhaust raised.
It's very strong and I'm happy with it.

If I was to change anything it would be less intake or raise the exhaust 2 degrees
But there's always more so you just have to stop and move on.
I got 661 all over the place now.

 

[Redfin]

But there's always more so you just have to stop and move on.

You should know doing as many as you have. I was chatting with Doc about Rodneys twig cutter. Its the only 026 Ive done. I was kicking around giving it more intake but I decided to let Rodney run it first. It went home with him that night.