Too much or Just right???

golfer · Jul 26, 2012

what's the dish cc out at?

CSIPSD · Jul 26, 2012

Last I heard was 44cc... I dont know if thats true or not...

JDub · Jul 26, 2012

They look much larger than 44cc's to me...

golfer · Jul 26, 2012

they do look bigger than 44cc's...

but 44cc's would put you right around 16.5CR if correct (and the other engine/valve recess specs are near factory)

CSIPSD · Jul 26, 2012

Jacob@DP-Tuner said:
They look much larger than 44cc's to me...

golfer said:
they do look bigger than 44cc's...

but 44cc's would put you right around 16.5CR if correct (and the other engine/valve recess specs are near factory)

Thats why I bring it up, I have never seen bowls like that before! And they still have to have valve relieves cut into them.

Maybe its the flat shape that seems weird.

Deputydog · Jul 26, 2012

I agree, looks much more that 44cc ..

I found a picture of one of my 7.3 pistons that was cut, but I can't find the specs for it.. Just for comparison purposes anyway

CSIPSD · Jul 26, 2012

Deputydog said:
I agree, looks much more that 44cc ..

I found a picture of one of my 7.3 pistons that was cut, but I can't find the specs for it.. Just for comparison purposes anyway

That looks about 42cc or so...

CSIPSD · Jul 27, 2012

I would love to see another picture of the first piston, but I cant find one.

What issues would it cause assuming its as large as it looks?

golfer · Jul 27, 2012

For what application are these pistons being used?

Powerstroked162 · Jul 27, 2012

CSIPSD said:
I would love to see another picture of the first piston, but I cant find one.

What issues would it cause assuming its as large as it looks?

It's gonna run like shiat on fuel for starters lol.

Jacob, do you have pics still of ours pistons?

JDub · Jul 27, 2012

These are the pistons that went into my motor.

Hotrodtractor · Jul 28, 2012

I've seen some fuel bowls with large radii like that before around the bowl on Dmax forums.... I believe it to be a case of "a little radius keeps it from cracking so a lot of radius must be better."

I can't think of a single application where I would want a fuel bowl with that large of a radius lip around the top. Sure maybe the loss in compression ratio - but I would go for a wider shallower bowl with a much more "crisp" transition from the piston top to the bowl.

FWIW this is what the pistons look like that I have had cut: