SPI moly pistons?

[poliguy]

just wanted to get a feel for these pistons ive never used them so i would like some input from people who have used them in there iq's. thanks.?

 

[miller tools]

PISTON

I USED SPI PISTONS IN MY 900 DID NOT GO WELL POOR QUAILTY JUST MY 2 CENT

 

[poliguy]

I USED SPI PISTONS IN MY 900 DID NOT GO WELL POOR QUAILTY JUST MY 2 CENT

were they the moly series?

 

[DragonSlayer1]

spi

I use them all the time. Seem to work well. I would use them over the stock piston.

 

[poliguy]

any break in and jetting requrements? thanks

 

[sled_guy]

I would run them in anything but the 900 Polaris.

I've used literally hundreds of them in the 800 big blocks I've rebuilt over the years, never an issue.

Unless you have a Polaris 900 do not give Polaris the stupid amount of money they want for pistons, use the SPIs.

sled_guy

 

[miller tools]

PISTONS

THE SPI 900S WERE MADE OFF THE OEM PISTON LOOKS LIKE THE OTHER ENGINES ARE OK

 

[svrdram]

I personally have never used them but I have a friend that runs them in every motor be builds. I've burnt down every oem pistons I've used. I will be using the in my 660 for sure!