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Another What's This, under the hood.

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Starliner

Another What's This, under the hood.

Hey All
I'm still chasing down my rough idle issues.
I have said it before, I need to get a FSM.

But what the heck is this orb by the battery for?
It connected to a valve which T-ed off to a tiny vac line inside the cabin.
Thanks again.

JOE

1983 F150 XL Flareside, Shortbed.
4 X 4, auto, 351w, 4bbl added.

"It's hip to be square."

81f100custom

Re: Another What's This, under the hood.

That would be your vacuum reserve for when the engine is at low or no vacuum so things like your A/C doors won't start closing and opening because of loss of vacuum.

Eddie,
81 F100 Custom SWB, 5.0L, 4x2, Single Rail Four-Speed Overdrive, 3.00 Non-Limited Slip Rear Axle, Non A/C truck to complete 85 F150 factory A/C conversion, Nutmeg interior color.

ArdWrknTrk

Re: Another What's This, under the hood.

Administrator

In reply to this post by Starliner

Without something like that (or the infamous Hi-C can) your climate control will default to defrost when WOT up long grades or similar situations.

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.

Starliner

Re: Another What's This, under the hood.

In reply to this post by Starliner

Thanks much, sounds like it's worth keeping.

JOE

1983 F150 XL Flareside, Shortbed.
4 X 4, auto, 351w, 4bbl added.

"It's hip to be square."

ArdWrknTrk

Re: Another What's This, under the hood.

Administrator

The plastic ball is much better than the tin can that rusts on the bottom, and has you pulling your hair out looking for the leak

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.

FuzzFace2

Re: Another What's This, under the hood.

ArdWrknTrk wrote

The plastic ball is much better than the tin can that rusts on the bottom, and has you pulling your hair out looking for the leak

Oh man don't I know that. It was the ends that had pin holes in it.
I was able to remove the mounting bracket and used fiber glass rosin to coat the can.
Painted it black, put the mounting bracket back on and installed in the truck.
I still need to pick up a check valve that goes between the vacuum supply and the can or as said under low / no vacuum the doors go to defrost.
So people know what the "juice can" look like.

Dave ----

Dave G.
81 F100 flare side 300 six / AA OD / NP435 / 2.75 gear
http://cars.grantskingdom1.com/index.php/1980-Ford-F100?page=1
81 F100 style side 300 six/SROD parts truck -RIP
http://cars.grantskingdom1.com/index.php/1981-Ford-F100

Gsmblue

Re: Another What's This, under the hood.

In reply to this post by Starliner

Edit: sorry, the rest of the posts didn’t load on the page so I didn’t see the other responses..

Vacuum reservoir.

1985.5 F-150 XL Explorer standard cab 5.0 EFI AOD 4x4
Daily Driver. We call her Eunice the Ute.

1982 Bronco XLT Lariat 351W AOD 4x4
Code name Esperanza, or Espy to her friends. Please see my Project thread for the blow by blow.

1984 F-350 XL Centurion crew cab 460 T19 4x4
"Eylza Dual-little"