Penton Owners Group

General Discussion => Penton Talk => Topic started by: t20sl on December 24, 2012, 07:46:10 AM

Title: Wiseco PS125 and 125H marked pistons
Post by: t20sl on December 24, 2012, 07:46:10 AM
Anyone know what these fit?  These marks are on inside of dome.  PS 125  and 125H.  These are NOS with rings.  One is a single ring one a double
Title: Wiseco PS125 and 125H marked pistons
Post by: thrownchain on December 24, 2012, 07:57:34 AM
Not sure, but my book lists PS 121 thru 124 to be Hodaka pistons.
Title: Wiseco PS125 and 125H marked pistons
Post by: Koen Cuypers on December 25, 2012, 11:12:56 AM
Hi, probably it's a Wiseco piston for 125 SACHS engine.
PS125 is the standard bore (54.00mm).

Koen
Title: Wiseco PS125 and 125H marked pistons
Post by: thrownchain on December 25, 2012, 11:47:00 AM
Penton Sachs is a PS 168
Title: Wiseco PS125 and 125H marked pistons
Post by: gooddirt on December 25, 2012, 08:08:32 PM
Most likely a PS marking under the dome is cast and not a good piston for racing .Use the later forged  type in the orange and white box with a 168 #.
Title: Wiseco PS125 and 125H marked pistons
Post by: thrownchain on December 26, 2012, 02:12:03 PM
According to Paul Stannard, the old version PS 125 pistons are just not up to todays standards. The alloy mixtures back then weren't very good. He doesn't recommend using them, although I still can't tell you what model they fit.
Title: Wiseco PS125 and 125H marked pistons
Post by: t20sl on December 27, 2012, 01:59:15 PM
Just looking to identify in order to sell (inexpensive).  May not be up to today stds but they were raced in the day and not many restored bikes really get run hard do they?  Figure 40 bucks with rings is reasonable.
Title: Wiseco PS125 and 125H marked pistons
Post by: thrownchain on December 27, 2012, 02:16:46 PM
As soon as I find out the model they fit, I will let you know.
Title: Wiseco PS125 and 125H marked pistons
Post by: gooddirt on December 27, 2012, 03:08:25 PM
You have been WARNED ! DO NOT ! use in a race bike. The Whole North West Penton/KTM race team says not to use them!
Title: Wiseco PS125 and 125H marked pistons
Post by: thrownchain on January 03, 2013, 06:52:12 PM
Ok, bad news. Paul Stannerd couldn't I.D. these, so he got ahold of a friend of his at Wiseco, and he couldn't find a listing for them either. Back to square one.