78 Coupe Posted July 13, 2012 Report Share Posted July 13, 2012 Is it possible to put 5k crank, rod and pistons into a 4k block Quote Link to comment Share on other sites More sharing options...
ke70dave Posted July 13, 2012 Report Share Posted July 13, 2012 Moved to k motor discussion. I dunno the answer but give it a google;) Quote Link to comment Share on other sites More sharing options...
B.L.Z.BUB Posted July 13, 2012 Report Share Posted July 13, 2012 don't 5k's use a larger piston? Quote Link to comment Share on other sites More sharing options...
agius Posted July 13, 2012 Report Share Posted July 13, 2012 don't 5k's use a larger piston? sure do Quote Link to comment Share on other sites More sharing options...
B.L.Z.BUB Posted July 13, 2012 Report Share Posted July 13, 2012 BOOM! I'm the man. Quote Link to comment Share on other sites More sharing options...
Redwarf Posted July 13, 2012 Report Share Posted July 13, 2012 (edited) 5 K crank os the same as a 4K crank. 73mm stroke. Standard 4K bore is 75mm, 5K 80.5. I had CB23 Charade pistons (standard 76mm) in a 3K, which from memory we took out to 78mm (2mm oversize?) at which point we got scared. I believe you won't get 80.5's in a 5K. Edited July 13, 2012 by Redwarf Quote Link to comment Share on other sites More sharing options...
asirike20 Posted July 13, 2012 Report Share Posted July 13, 2012 hey mate check this http://en.wikipedia.org/wiki/Toyota_K_engine :yes: :yes: :yes: Quote Link to comment Share on other sites More sharing options...
78 Coupe Posted July 14, 2012 Author Report Share Posted July 14, 2012 Thanks’ fellows I’ll investigate further Quote Link to comment Share on other sites More sharing options...
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