[esse0esse]

I have access to an SP1 motor ...will it fit my SP2 bike ?

Motor mounts,ECU ( timing), wiring harness,T-Body,exhaust port size( headers) ???...

Any and all info is appreciated .......

 

[bensexcessbikes]

This might help.

http://www.speedzilla.com/forums/rc51-general-discussion/52919-sp1-resurrection-thread.html

 

[thewax]

I have access to an SP1 motor ...will it fit my SP2 bike ?

Motor mounts,ECU ( timing), wiring harness,T-Body,exhaust port size( headers) ???...

Any and all info is appreciated .......

yes it will bolt straight in....BUT you will need the spacer in the rear of the engine to accomodate the smaller swingarm spindle, if you have youre old motor you can just take the spacer out and put it in the new one.

as for exhausts etc sp1 are round sp2 are oval but they will bolt up no problems (exhaust tracts not fitment holes)

throttle bodies are bigger at the top not on the engine side so will go straight on

its a very easy swap


i have done the opposite and got a sp2 motor in my sp1.....everything else is sp-1 i had to take the spacer out of the motor for the bigger swingarm spindle

 

[thewax]

http://www.speedzilla.com/forums/rc51-technical-discussion/60107-sp1-sp2-swingarm-swap-document.html


this will help too shows you the spacer !

 

[esse0esse]

Thanks guys ... really appreciate it ..........
Indeed ; exhaust ports on the SP2 heads have a ''trick'' oval shape !!!...