PVL ignition suit CR125M 1974/78 $450

[fixedit]

Penton Racing Products
PVL Ignition Part number #70411
New in box
Came with my CR250m
But is the wrong one
Suits Cr125M 1974/78
        CR125R 1979-85
        MR175  1975-77

[bigk]

You could use that. It's a common thing to replace CR250M points ignition with CR125M CDI ignitions.
K

[Richo52]

Yep already told them that ...it was included with a CR250M I sold them :-)

[fixedit]

Yeah it physically fits yes ,I read though,
The CR250m is uses a fixed points system.Where the CR125M uses the retard and advanced timing provided by its CDI map. The CR250M's port timing and low compression are not designed for this ignition CDI mapping.Yes it would work but I would lose power towards the top end revs as it advances.Then I thought the 75 CR250M1 has CDI ,but read that it had different port timing and higher compression to suit its new CDI ignition in 1975. So I wanted the correct CDI map.I wish it wasn't that way I would bolt it on now.
So when I sell it I'll buy another.If ya can point out my research is wrong, It would save me some headaches

[Richo52]

The fastest elsinore I have ever ridden was one I raced in the USA in 2001 running a PVL cr125 system at the Running Brand GP in Alabama in 2001 I holeshot and lead for over a lap until I binned it.......still placed at the end of the day.....anyway the PVL works.....listen to experience NOT theory!!!!

[bigk]

Fitted many CR125 CDI's to CR250M & not experienced any of what you've stated. Then again we are not chasing 1/2 a second a lap either. I'd be using it if CDI is what you want.
K