Block sizes

  • Thread starter Thread starter JohnH
  • Start date Start date
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JohnH

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If you don't know this is the block size of the motors we find today.
cm3=inch3
2.5=.15
2.95=.18
3.3=.20
3.4=.21
3.7=.23
3.93=.24
4.1=.25
4.59(4.6)=.28
4.9=.30
5.24=.32
5.9=.36
7.54(7.7)=.46
8.0=.49
 
Last edited by a moderator:
great info!! i always thought my little 4.1 was a .25 engine but was never sure, so its good to know!!
 
and just because its bigger, it doesnt mean better,most of those bigger engines don't run any better then a .28 just suck way more fuel,
 
I just want to build one and put my .28 axial motor in it
 

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