[Fot] Crankcase Venting - testing

MadMarx tr4racing at googlemail.com
Fri Feb 1 00:31:37 MST 2013


How to test a PVC valve?

After I had these several failures I've checked the valve before each run:

- I pull the hose from the valve cover
- blow by mouth into the hose (to operate the valve)
- and suck back

On sucking the valve has to block, totally block the sucking back. If there
is gentle blow by the valve is gone.

My HD valve construction can be easy made by people who has a lathe. The
dimensions aren't important.
You can take the normal PVC valve as pattern.

The spring is the important part. I used a snippet of a SU carb spring for
valve operating.

Installed:
https://lh4.googleusercontent.com/-tEf8uoPfIBo/UJJmlQug4SI/AAAAAAAABhI/GcSEH
3d4wnU/s983/20121101_130726.jpg



Cheers
Chris



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