03 450 EXC compression

[m6thompson]

I'm getting a reading of 132 psi on a compression test of my 2003 KTM 450 EXC racing. The carb is off of the engine, and the reading was taken running the electric starter for about 5 strokes. That seems a little low. Does anyone know what the reading should be for a healthy engine?

I've searched the forums and the web and can't find a good answer.

[bryank]

Unfortunately I doubt you will find your answer here as this is the RC8 section of forum

[m6thompson]

I'm getting a reading of 132 psi on a compression test of my 2003 KTM 450 EXC racing. The carb is off of the engine, and the reading was taken running the electric starter for about 5 strokes. Does anyone know what the reading should be for a healthy engine?

I've searched the forums and the web and can't find a good answer.

[m6thompson]

Thanks. I'll repost elsewhere

[m6thompson]

Never mind; I answered my own question by doing a leakdown test.

The 132 psi reading corresponded to a leakdown reading of about 98%, so it was fine.

[bajadog]

Originally Posted by m6thompson

Never mind; I answered my own question by doing a leakdown test.

The 132 psi reading corresponded to a leakdown reading of about 98%, so it was fine.

Sorry I missed your post.

Just as a cross check, my '03 had about 115 psi.