ms 462

[RI Chevy]

opcorn:

 

[CR888]

View attachment 142894

I like this bit when the pistons start gett'in dirty and we look at them.

 

[AlfA01]

Lookin good Scott. It’s going to get interesting when reinforcements show up. Hopefully this is brewing some ideas till then.

That's what I'm thinking too, Rod. If ole tree monkey walks out and finds an extra 462 on his door step...

Just keep doing what you are doing here and return to sender.

 

[Brush Ape]

Do you play around with strato timing on strato saws or leave it alone?

leave it alone, it's nothing more the a fresh air pump. takes fuel to make power.

Hahahahahaha..!!! Yes.

Tried to tell Bad Smelling this ten years ago and was told they ended up as a pile of shavings on the floor.

 

[tree monkey]

one can not explain something to someone who already knows everything

 

[AlfA01]

one can not explain something to someone who already knows everything

Lol.

Well, since I don't know everything, would you mind giving your opinion on the size of the piston ports of the 462? Do you find it limits what you can get out of this thing?

I was surprised to find the 462 has noticeably smaller area of piston porting than a Husky 562.

 

[tree monkey]

Lol.

Well, since I don't know everything, would you mind giving your opinion on the size of the piston ports of the 462? Do you find it limits what you can get out of this thing?

I was surprised to find the 462 has noticeably smaller area of piston porting than a Husky 562.

there part of the strato so I don't pay much attention to them

 

[AlfA01]

View attachment 143034

there part of the strato so I don't py much attention to them

I'm trying to get my nugget around the strato stuff. I got some studying to do.

So, in the blue circle is the scavenging/ clean air charge that helps clean exhaust gases and prevents un-burned fuel mix heading out the exhaust, right?

My question is what's going on in the red? Do those work like standard piston ports?

 

[tree monkey]

red is nothing more then reducing weight

 

[RI Chevy]

Makes people ask questions

 

[huskyboy]

Seems like strato is similar to smog pumps on some cars.

 

[czar800]

i'm working on a cutaway strato cylinder and will be making a vid explaining how it works.

 

[Wood Chopper]

i'm working on a cutaway strato cylinder and will be making a vid explaining how it works.

Yes thankyou. Just when I think I start to understand it I get it all fuggered up in my small brain.


Sent from my iPhone using Tapatalk

 

[smokey7]

When you machine a jug it moves all ports. How does the strato timing and duration get affected? Do you ever raise them back to what the factory had or higher to start scavenging earlier?

 

[tree monkey]

When you machine a jug it moves all ports. How does the strato timing and duration get affected? Do you ever raise them back to what the factory had or higher to start scavenging earlier?

lowering the cylinder,
shortens ex, and tr, dur
lengthens in, and st, dur

strato is part of the intake process. the longer the strato dur is, the shorter the intake dur needs to be. the more clean air that enters through the stratos. the richer the air/ fuel ratio has to be entering the intake. need to make it balance. the air/ fuel ratio in a std engine is around 14/1. a streato is around 8/1. this is corrected in the combustion chamber when it mixes with the clean air. some of the clean air is lost out the ex port. this is the wedge of air they talk about.

the belief that a strato burns less fuel to make the same power as a standard engine is untrue.it just doesn't waste as much.

the strato timing can only be changed by raising or lowering the cylinder, or raising or lowering the top edge of the port in the piston.

so now you have more questions then I have answered

 

[smokey7]

Thank you for answering some of my questions about strato engines. So if i am picking up what you are putting down the strato ports are moving in a benifical direction just by machining the jug. So no further alterations in direction or timing is required? Have you ever played with adjusting timing of stratos? What type of changes were made and how did it change the behavior of the engine? In my mind it seems that there is something to gain by messing with them for better scavenging ie better performance.

 

[AlfA01]

Part II showed up today. Exhaust gaskets on order.

 

[drf256]

lowering the cylinder,
shortens ex, and tr, dur
lengthens in, and st, dur

strato is part of the intake process. the longer the strato dur is, the shorter the intake dur needs to be. the more clean air that enters through the stratos. the richer the air/ fuel ratio has to be entering the intake. need to make it balance. the air/ fuel ratio in a std engine is around 14/1. a streato is around 8/1. this is corrected in the combustion chamber when it mixes with the clean air. some of the clean air is lost out the ex port. this is the wedge of air they talk about.

the belief that a strato burns less fuel to make the same power as a standard engine is untrue.it just doesn't waste as much.

the strato timing can only be changed by raising or lowering the cylinder, or raising or lowering the top edge of the port in the piston.

so now you have more questions then I have answered

Thanks. That is an excellent explanation Scott. Also the longest post I’ve ever seen you make, lol.

Never thought a lot about the Stoich difference. That is certainly interesting to me.

I know one good builder here speaks of “equalizing the stratos” and builds a mean ass 562. I believe that’s where many of the questions emanate from.

My question is why not try to use them, even with the understanding that they are a fresh air pump. Seems like air flow is the rate limiting step in power production. The carb usually can supply all the fuel ever needed.

 

[tree monkey]

I believe the intake and strato ports should be close to the same dur.

 

[drf256]

Maybe we can bring a chalkboard to Randy’s and you could give a lecture.

Just kidding, but that would be pretty awesome.