E36 Piston Weight

[dj10]

Anyone have data on a Factory Piston, either Stock bore or .020" Piston Weight?
I will tell you this, a Wiseco .040 piston weights 323.4 to 324.9 g.
Thanks
dj

 

[dj10]

Originally posted by dj10@Nov 22 2005, 11:52 AM
Anyone have data on a Factory Piston, either Stock bore or .020" Piston Weight?
I will tell you this, a Wiseco .040 piston weights 323.4 to 324.9 g.
Thanks
dj

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Never mind, a stock bmw piston is 6g different than a .040" wiseco. You think this is close enough to be considered lega?

 

[x-ring]

Originally posted by dj10@Nov 23 2005, 04:42 PM
Since there is 7000g in a lb.

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What did you weigh it with, a reloader's scale? Does anyone else measure weight in grains?

 

[dj10]

Originally posted by x-ring@Nov 26 2005, 11:27 PM
What did you weigh it with, a reloader's scale?  Does anyone else measure weight in grains?  

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A digital Postage scale that weighs in Oz's and Grams. Yes Weisco sent the weight of thier pistons in grams. The postal scale was only a couple of grams off of the Weisco weights. That's pretty damn close for me.
Dan

 

[lateapex911]

Interesting, where do grams figure into this?

 

[dj10]

Originally posted by lateapex911@Nov 27 2005, 03:36 PM
Interesting, where do grams figure into this?

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There are 437.7 grains in a oz. also 28.349 grams in a oz. (if I remember correctly) or 15.43 grains in a gram.

 

[Eagle7]

So the E36 pistons are 0.75 oz?

 

[dj10]

Originally posted by Eagle7@Nov 27 2005, 06:03 PM
So the E36 pistons are 0.75 oz?

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My fault, a bmw piston is .712 of a pound or 323.4 g (grams not grains).
Glad someone is awake.
So that means a BMW Piston v a Weisco Piston is 6 grams difference or about 93 grains difference. Point being is this accurate enough to be considered legal?