1988 RM125 Compression

J

Jtbizzy

Member

Nov 24, 2018

1

1

• Nov 24, 2018

• #1

I have a 1988 rm125 trying to figure out how much compression I should get I just rebuild top end still having issues trying to get it to start got Spark please help

 

Okiewan

Admin

Dec 31, 1969

29,550

2,239

Texas

• Nov 24, 2018

• #2

160-175 if I recall correctly, someone please correct me if I'm wrong.

 

Rich Rohrich

Moderator / BioHazard

LIFETIME SPONSOR

Jul 27, 1999

22,839

16,904

Chicago

• Nov 24, 2018

• #3

That a good range for compression.

 

The Redrider

Member

Jun 14, 2019

238

32

• Jun 16, 2019

• #4

Jtbizzy said:

I have a 1988 rm125 trying to figure out how much compression I should get I just rebuild top end still having issues trying to get it to start got Spark please help

Click to expand...

Olde 125? Get your credit card ready! Top end is a good start. You would be wise to do a ignition rotor wiggle, up and down to see if those bottom end bearings are toast. Beautiful bike, slap up some images...