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-   -   Mistake with oil ring expander (https://www.miataturbo.net/engine-performance-56/mistake-oil-ring-expander-100389/)

jrmiata42069 06-12-2019 03:35 AM

Mistake with oil ring expander
 
Hello!

I have a doubt that has me worried. I have installed the 83.50 Supertech pistons rings in my engine as indicated in the picture of the guide. But I have made a mistake and I do not know if it is very serious.
I Placed the oil ring expander into the oil groove with the butted tips of the expander 45 degrees from either end of the wrist pin as the following picture shows:

https://cimg2.ibsrv.net/gimg/www.mia...d309588d84.jpg

The image has confused me I believed that all oil rings had to place to 45 degrees from the wrist pin. I have already assembled the entire engine. After this I have read the installation guide again and I have read that the expander has to be at 90 degrees!! The expander are correctly butted…

Is it a very serious mistake? Or can I continue as is? I do not want to disassemble the engine again for not breaking the cylinder head gasket and other gaskets ...

https://cimg2.ibsrv.net/gimg/www.mia...9c3dd8e284.png

I appreciate your help.

Thanks!

DaWaN 06-12-2019 06:05 AM

So your oil expander is off by only 45 degrees? I would not worry about that, there is plenty of margin. I think I would only worry if it was off by more than 90 degrees.

jrmiata42069 06-12-2019 06:38 AM

thanks for the answer, this is how I placed the oil ring expander:
https://cimg1.ibsrv.net/gimg/www.mia...9fe003c10.jpeg

jrmiata42069 06-13-2019 04:58 AM

I sent the question to supertech and this is the answer:
This is no big deal. You are fine.
Already solved!

ElyasWolff 06-18-2019 10:03 PM

You are fine just send it.


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