Old 11-19-2013, 07:17 PM
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Default RB S5

Hi nitro fans, needing some help. RB S5 looking for parts and wanting to know if I can use a different piston and sleeve from other rb .21 and use it with the S5 crank and case. What options are possible? Please advise and thank you.
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Old 11-19-2013, 11:14 PM
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From what I think I remember
Any on the s3 s5 s7 or ws7 sleeves will fit in. The S series of engines were a square stroke. I think the s series became the junior, hobby and ws9 line of motors.
Im pretty sure none of the rb engines since have been square strokes

Asking someone like grinder or hambone on the rb thread in rhe offroad engines section would be the best bet
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