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      05-03-2020, 03:39 AM   #6
moonriver
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Drives: E46 -E90 -F30 - F10 520i
Join Date: Aug 2011
Location: Garden Grove,CA

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Quote:
Originally Posted by ckaul View Post
What are the sizes of the reduction adapters and what did you use to mount the OCC?


Quote:
Originally Posted by moonriver View Post
Hi,
There are several OCC you can get, I got Mishimoto brand.
Link order here:
https://www.ecstuning.com/b-mishimot...fiber/mmocccf/

Photo of after it is installed :





I have to cut oil suction line connect between crank case and intake tube. It requires reduction adapters (yellow cooper) to fit with OCC.

I have used OCC for 2 years and I only see very little oil in OCC, I believe N20 engine has a very good designed oil separator not like other previous engines. You should consider the need!
Hi,
I did not remember what size it is. After cut, I measured and got a local shop to make copper reducer. At that time there was not available completed OCC yet.
Now I see there are some completed OCC for this N20 engine, you should consider it
Appreciate 0