Replacing vac lines and check valves. I have the Dale Clark check valves. It looks like my car had three different kinds originally which I'm sure is common knowledge to most of you out there. The two plastic types in the picture below and one aluminum canister-like valve that is about the size of a bullet. I am assuming that I just replace all 4 of them with the 4 of the same kind that I got from Dale. Is this correct? The larger OEM plastic check seemed to be more restrictive when I blow on it than the smaller OEM ones were. I just want to be thorough and not have any issues.

 

The metal one is the purge control check valve, not part of the turbo control system. There are 4 other ones for the turbo control sytem (plastic ones).
When I replaced mine they were all dry and very hard to blow through.

Check valves shown here:
https://www.rx7club.com/attachment.p...1&d=1208733251