700SX Piston Big Bore DIY?

[92VmaxDev]

Hey guys,

I have a 92 750 VMax that I can't find anything anymore for the 880 big bore kit. Has anyone done the 700SX pistons in a vmax making it a 9XX? If so what did you use for head gaskets? Those pistons are readily available, though I'll have to have the cylinders bored and sleeved. Any other info?

Thanks!

 

[srv540]

Might wanna check out some DT175 pistons.

 

[Weatherbyman]

The Vmax4 750 has 16mm wrist pin. The 700 SX/SXR has 20mm wrist pin. The 800 Vmax4 is 18mm.

 

[Weatherbyman]

For the record, we have 3 Vmax4s that are set up to run bigger pistons than originally. One is a ‘92 with 68mm pistons ( 865cc). One is a ‘95 that has 69.5 mm pistons (904 cc). The other is a ‘93 with 65mm pistons and ported stock 800 cylinders. ( 800 cc). Unfortunately, all of them require custom pistons. They are strong running monsters though.