Penton Owners Group

General Discussion => Penton Talk => Topic started by: Scootern29 on January 29, 2018, 04:47:00 PM

Title: 1975 KTM 250 Squish
Post by: Scootern29 on January 29, 2018, 04:47:00 PM
Does anyone know the correct squish measurement to a 1975 KTM 250 mx motor? I was told .030 and no less than .025.

Thanks in advance.
Title: 1975 KTM 250 Squish
Post by: Jerry Birky on January 30, 2018, 09:41:33 AM
from my experience any less than .040" is asking for trouble.
Title: 1975 KTM 250 Squish
Post by: G Ellis on January 30, 2018, 11:03:08 AM
The trick is to set deck height to .052 hope this helps.
Title: 1975 KTM 250 Squish
Post by: Kip Kern on January 31, 2018, 07:06:53 AM
Some piston manufacture info has the measurement.  Penton manual also has the info per displacement.  Each KTM engine is different