Bit of a silly one, when I saw how much iron filings were on the bench after having my block bored to 68mm, I thought I’d weigh it.
So no prizes but how much weight do you think you remove by boring from standard to 68mm?
Overbore Weight Saving.
Started by
PoolGuy
, Aug 03 2020 07:43 AM
Best Answer phillrulz , 03 August 2020 - 08:26 PM
1.53kg if its all there
Good guess, 1.48kg was the total.
i nerded and calculated it, assumed the 64mm stock 141mm deep worked out volume of cylinder then worked out new volume of cylinder subtracted old from new and assumed the cast had a density of 7.23G/cm^3 then times by 4 for all cylinders
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22 replies to this topic
#2
PoolGuy
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Posted 03 August 2020 - 07:49 AM
Clue.
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#3
Cabby
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Posted 03 August 2020 - 07:53 AM
I think a lot of that will be abrasive grit.
#4
PoolGuy
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Posted 03 August 2020 - 07:55 AM
I think a lot of that will be abrasive grit.
From what?
#5
KTS
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Posted 03 August 2020 - 07:56 AM
there's got to be a couple of kilo's at least
do we need to take into account the new pistons/rings will be heavier than the old ones 
#7
Chris1275gt
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Posted 03 August 2020 - 10:42 AM
950 grams
#8
phillrulz
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Posted 03 August 2020 - 11:17 AM
1.53kg if its all there
#9
PoolGuy
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Posted 03 August 2020 - 01:45 PM
Answer this evening.
KTS, don’t worry about the new piston weight.
Phil, it’s all there.
KTS, don’t worry about the new piston weight.
Phil, it’s all there.
#10
PoolGuy
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Posted 03 August 2020 - 05:59 PM
1.53kg if its all there
Good guess, 1.48kg was the total.
#11
phillrulz
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Posted 03 August 2020 - 08:26 PM Best Answer
1.53kg if its all there
Good guess, 1.48kg was the total.
i nerded and calculated it, assumed the 64mm stock 141mm deep worked out volume of cylinder then worked out new volume of cylinder subtracted old from new and assumed the cast had a density of 7.23G/cm^3 then times by 4 for all cylinders
#12
PoolGuy
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Posted 03 August 2020 - 08:28 PM
You have too much time Phil! I expect the slight discrepancy is down to what was left in for honing?
#13
mini13
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Posted 03 August 2020 - 08:35 PM
Lol, well apparently I can't count!
Think I must have got radius and diameter mixed up
Think I must have got radius and diameter mixed up
#14
Chris1275gt
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Posted 03 August 2020 - 08:51 PM
Good guess, 1.48kg was the total.1.53kg if its all there
i nerded and calculated it, assumed the 64mm stock 141mm deep worked out volume of cylinder then worked out new volume of cylinder subtracted old from new and assumed the cast had a density of 7.23G/cm^3 then times by 4 for all cylinders
Phil I know covid restrictions are biting hard but I do think you should really think seriously about getting out a lot more. Hats of for your answer.
#15
Quinlan minor
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Posted 03 August 2020 - 09:23 PM
Phil I know covid restrictions are biting hard but I do think you should really think seriously about getting out a lot more. Hats of for your answer.
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