ms 461 woods port race thing

[tree monkey]

I’d say more primary, you been at 7 for a while, perhaps more stagger will help? You Can still back up.

blow down will be 17 and 27

 

[tree monkey]

wish I had 2 more pistons in my pocket

 

[paragonbuilder]

wish I had 2 more pistons in my pocket

What would you try? Slanted roofs?

 

[Keith Gandy]

Im sorry fellows for my previous post as I had my transfers backwards. I meant the primary opening first and giving the secondaries a venturi effect.

 

[angelo c]

What would you try? Slanted roofs?

been thinking this with "domed" pistons...wondering how that would affect the swirl.
So many variables ...so few pistons....

 

[tree monkey]

What would you try? Slanted roofs?

yep. one each way

 

[tree monkey]

if I get a gain I can grind it in, but witch way?

 

[paragonbuilder]

if I get a gain I can grind it in, but witch way?

Just a thought. You have your exhaust where you want now, and it’s a loss to go more. So that piston is done. What if you grind the angles one way on it. If you maintain or gain it’s a win. Cuz it’s already slower the way it is.

I’m thinking I’d try upwards towards the center.


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[paragonbuilder]

been thinking this with "domed" pistons...wondering how that would affect the swirl.
So many variables ...so few pistons....

You mean like 026 dome?


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[XP_Slinger]

Primary downward for lift, secondary flat to continue the “bottom up” fill and push exhaust out.

Disclaimer: theory only, don’t let the smell of my brain farts distract from actual experience.

 

[paragonbuilder]

Just a thought. You have your exhaust where you want now, and it’s a loss to go more. So that piston is done. What if you grind the angles one way on it. If you maintain or gain it’s a win. Cuz it’s already slower the way it is.

I’m thinking I’d try upwards towards the center.


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Also you could start with just the primaries, then angle the secondaries after you maximize gains with that if there are any and see if there are any more?


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[paragonbuilder]

Primary downward for lift, secondary flat to continue the “bottom up” fill and push exhaust out.

Disclaimer: theory only, don’t let the smell of my brain farts distract from actual experience.

Downward towards exhaust?


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[tree monkey]

 

[angelo c]

You mean like 026 dome?


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that's where I was...you passed me doing 90mph with the slanted then Scott blew by us both with the staggered slant...
im limited by what my mind will allow in by what my tooling will do. I had no way of mentally building slants.
and only a crude understanding of doming one.

but am sure as chit finding this discussion better then learning about Chithole locations on TV

 

[MustangMike]

Very interesting tread, wish I had enough knowledge to contribute, thanks for the peek inside TM!!!

 

[paragonbuilder]

that's where I was...you passed me doing 90mph with the slanted then Scott blew by us both with the staggered slant...
im limited by what my mind will allow in by what my tooling will do. I had no way of mentally building slants.
and only a crude understanding of doming one.

but am sure as chit finding this discussion better then learning about Chithole locations on TV

It’s the best thread on here in a long time! That’s for sure!


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[paragonbuilder]

View attachment 106804

Scott that looks better, but times were worse? Why do you think it’s washing better on the flywheel side?


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[GCJenks204]

Scott, a peanut gallery type question here. Will this R&D only be applicable to this saw or will you learn something that affects the way you port all 461's or all saws with quads?

 

[Keith Gandy]

Scott that looks better, but times were worse? Why do you think it’s washing better on the flywheel side?


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Flywheel fan is keepin that side of the cylinder cooler and not combusting as much as the otherside

 

[XP_Slinger]

Downward towards exhaust?

Yes sir

Flywheel fan is keepin that side of the cylinder cooler and not combusting as much as the otherside

Never thought of that. I thought it was a very slight difference in entry pressure caused by the clutch side ports being a hair lower than the flywheel side