Adjusting Distributor Vacuum advance retard, How do you do it? |
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Adjusting Distributor Vacuum advance retard, How do you do it? |
porsche735 |
Sep 9 2003, 10:01 PM
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#1
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Member Group: Members Posts: 189 Joined: 10-January 03 From: Los Altos, CA Member No.: 127 |
So, we seem to have found the source of our blown pistons and ring lands! Our distributor (off a fresh rebuild I might add), does not have enough vacuum retard at WOT. Turns out we were way too far advanced (about 38-40 degrees) under load.
My question is, how do you adjust the vacuum unit? The advance and retard work when you pull a vacuum on them. However, I suspect that the adjustment screw is not adjusted properly. It is almost all the way out. Does anyone know how to get this speced right? Thanks for your help, Chris |
porsche735 |
Sep 9 2003, 10:19 PM
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#2
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Member Group: Members Posts: 189 Joined: 10-January 03 From: Los Altos, CA Member No.: 127 |
Yes, mine was tested, but the machines only test the mechanical advance. That tested out righ ton spec of 22 degrees. I am looking for some method of setting the diaphragm steady state so I get the proper advance and retard. There probably is a machine to do this, but I thought we could probably do it in the car some way...
Chirs |
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