Text only | Text with Images

2 STROKE WORLD .net

The 2-Stroke Garage => Turning Wrenches => Topic started by: pdxjim on March 21, 2019, 01:50:59 AM

Title: Big windows, little windows?
Post by: pdxjim on March 21, 2019, 01:50:59 AM
I will be buying pistons for my RD350LC soonish.

As far as I can tell, I can get little round window RD style or big oval window RZ style to fit.

Is there a performance difference between the two?
Title: Re: Big windows, little windows?
Post by: Organicjedi on March 21, 2019, 10:56:53 AM
I was always under the impression to get the bigger windows for better flow. I have modded RZ pistons in my 400 for that reason.
Title: Re: Big windows, little windows?
Post by: ~JM~ on March 21, 2019, 12:26:29 PM
I may be wrong, but I see no downside to the larger openings.
Title: Re: Big windows, little windows?
Post by: m in sc on March 21, 2019, 12:52:39 PM
well, as the piston moves down and the reed is closed, that's where the boost port flow moves through, aside from the intake pull, so, it definitely doesn't hurt.
Title: Re: Big windows, little windows?
Post by: SUPERTUNE on March 22, 2019, 09:43:46 PM
All my RD engines I build and tune, all run better on the RZ/Banshee
pistons.
Chuck
Text only | Text with Images