Phazer piston mod.... ?

[Lasse]

Somewere in my head my memory tells me that back in 1989 - 1994
GYT sold moddified pistons called "Phazer SX" pistons.
I don not remember what the modified was......
I even know that I have seen a drawing showing how to moddifie the OEM pistons up to "SX" specs....


GYT = Genuine Yamaha Technology


Does someone here know what the so called "SX" pistons was ??
OEM part number ??

 

[..SNAKEBIT..]

I know bender racing sold kits

 

[Mtnviper]

The mod envolves cutting a larger notch in the bottom of the piston skirt on the intake side. This allows for more air flow. Not sure how much material is removed for the mod though.

 

[redsnake3]

i can remember seeing a page about doin it to your stock pistons, just cant remember teh site. i think it was a aftermarket performance site.

 

[gpxsrxracer]

http://www.dynotechresearch.com/file_upload/page_files/v2n2.pdf

 

[srxbully]

i know bender was the guys that first introduced that mod but didnt know it could be done to your stock pistons.

 

[nhsrx701]

take a look at that entire article....80 on a phazer is screaming....also check out the article on nitrous...I think I want that for my srx.....sick power gains...

 

[nhsrx701]

you should be able to modify those pistons yourself

 

[Lasse]

http://www.dynotechresearch.com/file_upload/page_files/v2n2.pdf

THANX !

 

[racer9]

Just read the piston article. DYNOTECH 1990 volume 2 number 2. Pipe shootout #9 includes drawing and dimensions of SX piston.