swap: 1100 or 1200 into STX900??? PLEASE HELP...

[Bala]

I am wandering if a 1100 (NOT Di) enigne from a ZXI or STX would be a straight swap into my STX900??? How about a 1200 from a STXR, would that be a straight swap into my STX900 (what additional parts would i need)?

Has anyone done this before?

I am looking into buying a new (refurbished or used 1100 or 1200 engine) to install into my STX900

Please, any information on this subject would help.

Thanks for your time.

[btldigger]

The 1100 should be a direct fit the 1200 would be pretty difficult.

[Bala]

The 1100 should be a direct fit the 1200 would be pretty difficult.

Do I have to replace any of the electronic/ignition?

[thesepaperwings]

They should have the same timing. I think the only difference is the jugs, pistons, carb jetting and pump.

[Bala]

They should have the same timing. I think the only difference is the jugs, pistons, carb jetting and pump.

The pump is different? I thought only the impeller was different?

[Bala]

and i need to know for sure weather i do or do not need to replace the ignition in order to do the 1100 swap into my 2003 stx900?

Thanks.

[pthoma1]

You will need to replace the ignition when swapping to an 1100. They are physically the same, but different timing curves.