Piston cc's after milling a 3cc dome?
I currently have these installed in a running lt1, however the domes were milled off before they were installed. I'm having trouble reassuring myself how to calculate piston cc now since the 3cc dome is gone. I don't even know if you can calculate it with the information I have on hand...
So, anyone have an idea on the current cc's since the dome is gone? I looked at other similar pistons and they were 5cc with two valve reliefs and flat tops however, again I have no idea if you can even compare them that way. Hope someone can help, with the little information I have on hand. Thanks! http://www.summitracing.com/parts/je...09-8/overview/ Brand:JE Pistons Manufacturer's Part Number:232509-8 Part Type:Pistons Product Line:JE Pistons Small Block Nitrous Series Dome Top Pistons Summit Racing Part Number:JEP-232509-8 Bore (in):4.030 in. Bore (mm):102.362mm Piston Style:Dome, with two valve reliefs Piston Material:Forged aluminum Compression Distance (in):1.125 in. Piston Head Volume (cc):-3.00cc Wrist Pin Style:Press-fit or floating Pin Diameter (in):0.927 in. Piston Ring Thickness:1/16 in. x 1/16 in. x 3/16 in. Quantity:Sold as a set of 8. Notes:Oil rail support included. Solid dome design. |
Re: Piston cc's after milling a 3cc dome?
If the piston started with a 3cc dome, and you milled them flat (no valve reliefs), the cc's would be "0". If they have valve reliefs, you have to cc them to determine the volume.
A dome is minus cc's, a valve relief or dish is plus cc's and a flat top is 0. |
Re: Piston cc's after milling a 3cc dome?
Originally Posted by Injuneer
(Post 6952415)
If the piston started with a 3cc dome, and you milled them flat (no valve reliefs), the cc's would be "0". If they have valve reliefs, you have to cc them to determine the volume.
A dome is minus cc's, a valve relief or dish is plus cc's and a flat top is 0. Thank you again :D |
Re: Piston cc's after milling a 3cc dome?
Originally Posted by bombebomb
(Post 6952467)
Thank you, I called the manufacturer, and had another opinion. It came to out to 5cc's after the valve reliefs (relatively large).
Thank you again :D |
Re: Piston cc's after milling a 3cc dome?
Originally Posted by Injuneer
(Post 6952473)
I don't know why the manufacturer would have a different opinion. I clearly stated that if they were truly flat and had no valve reliefs they would be 0. If you cut valve reliefs after removing the dome, I don't know how the manufacturer would know they are 5cc.
Again, thank you for chiming in :) |
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