ANOTHER PARTS PROBLEM :Cowl/plenum vacuum pod problem
While working on a 1969 with A/C. I had to remove the wiper door and check the cowl/plenum 'flapper' door pod due to none of the actuator pods were working and it was due to lack of sufficient vacuum.
Showing the cowl/plenum 'flapper door' still installed. All looks good so for except evident age to the parts.
The 'flapper' door removed.
VOILA!!!...one of the culprits of loss of sufficient vacuum.
DUB
The new vacuum actuator pod on the flapper door with the original one beside it.
I had to replace the factory hose due to it also was bad and installed a new hose and used corbin clamps to make sure the hose stays put.
I re-installed the factory vacuum hose that is good and installed a new retainer to make sure it also does not fall off.
Installed the set up and got the door to function BUT it would not close all the way.
Close up view of the door not completely closing.
DUB
THis is showing the difference from the new pod where I locked my calipers in place and put it beside the original.
THIS is the measurement of the original actuator pod.
DUB
Last edited by DUB; Nov 27, 2016 at 07:37 PM.





Is that the picture- but the re-po canister looks a bit thicker on one side too.
YES..I kinda have to. Or it means putting out a car that is not right.
Richard..as you know they do not come here for repairs and get stuff half-@ssed.
Is that the picture- but the re-po canister looks a bit thicker on one side too.
I AGREE...this totally sux! But as you also know...how often nowadays do the reproduction parts we buy actually go in perfectly the FIRST TIME.
DUB
The Best of Corvette for Corvette Enthusiasts
Simply because when I replaced the vacuum actuator pod (on the same 1969) that gets secured to the firewall side of the heater box for an A/C car...the studs were too long and I had to cut them so the new actuator would be able to go in.
WHAT it is ...is the 95% RULE in full effect....and it is...."95% of the companies that reproduce parts....reproduce then to 95% of being correct. AND it takes 95% of my time to finish out that last 5% and make it so the parts actually works."
And like I should have to send so much time getting things RIGHT....and some people wonder why things cost as much as they do .
Check this one out that I have found also. WHY can't they have things made RIGHT.
https://www.corvetteforum.com/forums...t-problem.html
DUB
Last edited by DUB; Nov 29, 2016 at 05:46 PM.
I did not photograph it due to I did not think that I would need to show the length of the threaded studs in it. But with the curved vacuum tube coming off of it on the side with the threaded studs...there is NO WAY to get it in without having to cut down the studs. And ...on the other side of the vacuum pod...they left off the pin that would allow the vacuum hose to be retained to it like GM did.
Always leaving stuff off parts to save a buck.
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The bad vacuum pod I removed.
Old pod and new pod. Hard to tell but if you look..you can see thee studs in the new one are longer.
The left one is the original with the extra pin to allow the vacuum hose to be secured. And the right one is clearly missing the pin.
DUB










