1975 KTM 250 Squish

Started by Scootern29, January 29, 2018, 04:47:00 PM

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Scootern29

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.

Jerry Birky

#1
January 30, 2018, 09:41:33 AM
from my experience any less than .040" is asking for trouble.

G Ellis

#2
January 30, 2018, 11:03:08 AM
The trick is to set deck height to .052 hope this helps.

Kip Kern

#3
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
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