Helo Measuring Correct Rod length for Given Situations
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Helo Measuring Correct Rod length for Given Situations
Could someone on the forum please calculate the needed connecting rod length to obtain ZERO DECK HEIGHT for the following? Engine Block Deck Height: 9.29"/236MM: Stroke: 3.40"/86.4MM. Gasket thickness 0.065"/1.65MM. ( These 3 items are constant). Piston: #1: Compression Height 1.32"/33.5MM. Deck Clearance: 0.027 " POSITIVE",: Pin diameter: .787"/20MM: Piston #2 Compression Height 1.20"/30.6MM, Deck clearance: "0", (15CC DISH), Pin diameter .827"/21MM . The Ring package for both pistons will be 1MM top ring, 1.2MM 2nd ring and 2.8MM for the 3rd ring. Thanks for any assistance and insight. Jerry
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Re: Helo Measuring Correct Rod length for Given Situations
Maybe I'm missing something in your question. Should be deck height minus compression height minus 1/2 stroke equals connecting rod length.
Re: Helo Measuring Correct Rod length for Given Situations
Try here!
http://www.wallaceracing.com/Calculators.htm
And think about using as long a rod that you can afford to lighten up the piston.
pdq67
http://www.wallaceracing.com/Calculators.htm
And think about using as long a rod that you can afford to lighten up the piston.
pdq67
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Re: Helo Measuring Correct Rod length for Given Situations
6.27"
3.4 divided x 2 = 1.7 +1.32= 3.02 .... 9.29- 3.02= 6.27"
#2 minus .120 or a 6.39" rod
3.4 divided x 2 = 1.7 +1.32= 3.02 .... 9.29- 3.02= 6.27"
#2 minus .120 or a 6.39" rod
GURU is only a name.
Adam
Adam
Re: Helo Measuring Correct Rod length for Given Situations
You say zero deck for both but your first piston says .027" positive? That's not going to be zero if you want your final piston to head clearance to be .038"
Rod would need to be 6.297"
You don't want .065" clearance do you?
Rod would need to be 6.297"
You don't want .065" clearance do you?