Mastermind Meets The MS500i

[Mastermind]

Here's where I ended up.

.040" out of the squish.

.047" off the base.

Ex: 103°
Tr: 124°
In: 83°

One odd jug.....

85° on the intake.

I opened all the transfers at the same time. Removed the baffle from the muffler. Port matched it to the jug, and opened the outlet to about a 7/8" hole.

Tomorrow....reassembly.

 

[Mastermind]

I'm not too interested in retaining the exhaust gas regurgitation into the transfers, that's why I allowed it more blowdown, and flattened off the transfers.

 

[MustangMike]

I should have suggested this earlier, but since we are not sure why the baffle is in the muffler, why not leave one of them in and see what difference it makes?

I seem to remember someone discussing the benefit of spit back guards concluding that the engineers knew what they were doing!

 

[ferris]

I should have suggested this earlier, but since we are not sure why the baffle is in the muffler, why not leave one of them in and see what difference it makes?

I seem to remember someone discussing the benefit of spit back guards concluding that the engineers knew what they were doing!

Good point

 

[Dub11]

It's Sunday. Date night.

I finished the jugs and the mufflers. Locked up and took my wife out to dinner and a movie.

What movie did you see?

*f-word these saws and stuff.

 

[drf256]

Well......

They increased the length of the transfer tunnels on the 462, and the 500i by casting part of them into the case. It's my understanding that allows the transfers to be back fed by exhaust gasses without them getting all the way into the crankcase. This then is used to purge the spent gasses from the combustion chamber with the back fed gasses in the transfers.

Yeah?

Nope?

GFY?

But the 462 is strato. So they are filling the transfer with fresh air and then exhaust first? Head spinning.

I think the slanted transfers allow back-stuffing on the exhaust side, which allows the fresh charge to be focused on the intake side of each transfer

Been pondering the same thing. Is opening Ex side first causing the exhaust to push the charge towards the intake side, let the natural amount of charge that gets sucked/short circuited out the exhaust be exhaust gas and not charge, or just allow the quickest flow there first to aid in direction and prevent short circuiting?

No idea.

 

[Glock37]

Guys i have no idea what the hell your talking about but ill let u guys do that
Ill stick to powder !!!


Sent from my iPhone using Tapatalk

 

[RI Chevy]

I'll just stick to running them. As I do not know my arse from my elbow...

 

[Mastermind]

I should have suggested this earlier, but since we are not sure why the baffle is in the muffler, why not leave one of them in and see what difference it makes?

I seem to remember someone discussing the benefit of spit back guards concluding that the engineers knew what they were doing!

No point in leaving it in. They are just directing the sound wave towards the recoil side.

What movie did you see?

*f-word these saws and stuff.

Underwater. It was meh.

 

[Mastermind]

But the 462 is strato. So they are filling the transfer with fresh air and then exhaust first?

I shouldn't have grouped those together without a disclaimer. LOL

The 462 is strato. And they are using that long tunnel for the fresh air charge. Like they are in the 5 series Huskys.

Where I'm a bit lost is the high side of the transfers being on the exhaust side of the jug.

Suppose they are giving the exhaust side a head start to help push the rest of the charge toward the intake, and block it from short circuiting out the exhaust port?

Remember, the angle of travel is still towards the intake side, even though the exhaust side opens first.

Now....my head is spinning. LOL

 

[Stump Shot]

But the 462 is strato. So they are filling the transfer with fresh air and then exhaust first? Head spinning.



Been pondering the same thing. Is opening Ex side first causing the exhaust to push the charge towards the intake side, let the natural amount of charge that gets sucked/short circuited out the exhaust be exhaust gas and not charge, or just allow the quickest flow there first to aid in direction and prevent short circuiting?

No idea.

Is a good place to ponder, when you think about it, the series of events are really to make this singular event happen. It occurs faster than the blink of an eye, to my way of thinking, there is no such thing as too much efficiency here.

 

[Stump Shot]

I shouldn't have grouped those together without a disclaimer. LOL

The 462 is strato. And they are using that long tunnel for the fresh air charge. Like they are in the 5 series Huskys.

Where I'm a bit lost is the high side of the transfers being on the exhaust side of the jug.

Suppose they are giving the exhaust side a head start to help push the rest of the charge toward the intake, and block it from short circuiting out the exhaust port?

Remember, the angle of travel is still towards the intake side, even though the exhaust side opens first.

Now....my head is spinning. LOL

Think in much simpler terms than that...

 

[Mastermind]

Think in much simpler terms than that...

Seemed pretty simple to me.

 

[Stump Shot]

Seemed pretty simple to me.

It is, until you realize mankind has been trying to make this function of the two cycle engine better for well over a hundred years and it's still not perfect, probably will never be in a piston ported configuration. Seeing as there's less and less on the table now days, it gives us a place to work a little bit of magic yet.

 

[Mastermind]

It is, until you realize mankind has been trying to make this function of the two cycle engine better for well over a hundred years and it's still not perfect, probably will never be in a piston ported configuration. Seeing as there's less and less on the table now days, it gives us a place to work a little bit of magic yet.

Could you simplify that please?

 

[Stump Shot]

Could you simplify that please?

The cylinder that gets the best fill(closest to 100% without going over) wins.

 

[Dub11]

Underwater. It was meh.

Any nudity?

 

[Mastermind]

Any nudity?

Nope.

 

[Dub11]

Nope.

That's disappointing

 

[Mastermind]

That's disappointing

Have you discovered pornhub?