Actually, I have heard that they make good torque. Is that true?I've been doing some heavy reading on engine tech......dished pistons are the next big thing Brad.
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- Thread starter woodyman
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Mastermind
Work Saw Specialist
They allow more pressure to bear on the piston crown......because they have more area.
But with this new DI the fuel is injected under such intense pressure that the piston needs a bowl, or dish, to catch the incoming fuel and contain it as the piston travels upward toward the spark.
The present is a very exciting time for engine builders. Larry Larson just set a world record for the fastest streetable vehicle. 6.16 @ 219mph in the 1/4 mile.
I just wish I could afford to play.
But with this new DI the fuel is injected under such intense pressure that the piston needs a bowl, or dish, to catch the incoming fuel and contain it as the piston travels upward toward the spark.
The present is a very exciting time for engine builders. Larry Larson just set a world record for the fastest streetable vehicle. 6.16 @ 219mph in the 1/4 mile.
I just wish I could afford to play.
Bilge Rat LT 20
ArboristSite Operative
What about different sparkplug locations, flame front and chamber shaping?
That is the next area to be tweaked after you settle on piston shape.
Reminds me of when i had to get plexiglass for windows in the sides of a smallblock Chevy on the dyno so the engine builder could see how the oil was flowing back into the pan at 7grand.
Lots of things going on to be considered before changing a part in a speed freaked mechanical monster.
That is the next area to be tweaked after you settle on piston shape.
Reminds me of when i had to get plexiglass for windows in the sides of a smallblock Chevy on the dyno so the engine builder could see how the oil was flowing back into the pan at 7grand.
Lots of things going on to be considered before changing a part in a speed freaked mechanical monster.
Mastermind
Work Saw Specialist
Bilge Rat LT 20
ArboristSite Operative
With the RPMs a saw turns piston weight is a big factor.
Does the shape of the dome increase performance more than the extra weight reduces it.
The extra stress on all the parts and the reduction in acceleration.
The solution is simple, more displacement!!!
Then we are going to want to tinker with that saw.
Now we have come full circle.
We can't leave well enough alone, we are men.
Yall need to figure this piston thing out quick, I have a new saw coming and will need to have some work done to it.
Does the shape of the dome increase performance more than the extra weight reduces it.
The extra stress on all the parts and the reduction in acceleration.
The solution is simple, more displacement!!!
Then we are going to want to tinker with that saw.
Now we have come full circle.
We can't leave well enough alone, we are men.
Yall need to figure this piston thing out quick, I have a new saw coming and will need to have some work done to it.
This is way over my head I just ran the saw for him in the 80's but one day We were setting around talking about a race, he said I thought I had a new idea about a piston I said want,he said I tried making it like a golf ball on top,he laughed and said it doesn't work but it did look like a piston golf ball
Well of course. Usually with homemade strawberry jelly or apple butter.
sachsmo
Addicted to ArboristSite
Ever fired a 133 Sachs Dolmar?
They have a dome at the squish band with a dish.
Quite torquey and they bite if you ain't real serious pulling it over.
