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On my '49 I want to give my vacuum wipers some help and have read where some have installed a vacuum tank.
My question for those that have done this is it just put in line between the carb and wiper motor?
I try not to drive in the rain, but have been caught in a few showers this summer and the truck only has one wiper.
Thanks.
Yup. Actually, between intake manifold vacuum and the wiper motor. Also need a one-way check valve, in the line, so that the engine can draw air from the reservoir but not allow it to escape from the reservoir back into the engine. $4 - $5 @ Amazon, around $8 @ NAPA.
(Search "Vacuum Check Valve") Wipers use quite a bit of vacuum so get the largest reservoir you can, especially if you live near long hills. Tons of different sizes and shapes on cars from the '60s and '70s in the boneyards.
I built my reservoir from 4" PVC pipe and strapped it underneath the bed on Blue. I forget exactly but I believe it is 4' long. With the engine shut off, I get 14 full sweeps of the wipers from the reserve. It helps when accelerating. I am running a 350 CID engine.
I run an electric vacuum pump/resevoir but it's for my brakes not a vacuum wiper motor. Seems like an electric wiper motor would be a more efficient solution.
The vacuum canister I used has a check valve built in. The clear line from the check valve goes to manifold vacuum. The small orange line goes to the wiper motor and the larger black one goes to the power brake booster.
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