Author Topic: Piston rings (Read 2500 times)

Gunni · « **on:** March 01, 2007, 04:00:42 AM »

I can seem little blue smoke sometimes when I�m on the throttle for a while,
and since the head has been checked thouroughly and recently put on,
I�m suspecting the rings aren�t holding up that well, I haven�t done a compression test yet and really should get to that.
but in case they are bad
what do rings cost and wich ones should I be getting?

I figure when I remove the head again to install a MLS I�ll pop out the pistons
and replace the rings

cecotto · « **Reply #1 on:** March 01, 2007, 01:22:24 PM »

Quote from: Gunni;20349

I can seem little blue smoke sometimes when I�m on the throttle for a while,
and since the head has been checked thouroughly and recently put on,
I�m suspecting the rings aren�t holding up that well, I haven�t done a compression test yet and really should get to that.
but in case they are bad
what do rings cost and wich ones should I be getting?

I figure when I remove the head again to install a MLS I�ll pop out the pistons
and replace the rings

I've seen quite a few M42 engines with worn rings, you might be right about this being your problem as well.

The donor engine for my stroker project had this exact problem. And actually my current engine has it too.

I recomend you have your cylinders given a light hone before installing the new rings. This will aid bedding in the rings, and give you good sealing.

Gunni · « **Reply #2 on:** March 01, 2007, 03:56:45 PM »

I can get new pistons and rings for $240
I�ll see what new rings locally are and if getting these new pistons would be only just more exspensive, and they are not forged
just cast

Author Topic: Piston rings (Read 2500 times)

Gunni

Piston rings

cecotto

Piston rings

Gunni

Piston rings