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PG whine and hard shift into D
Posted by: gerg ()
Date: March 08, 2023 08:39PM

So I got the 140/PG running in the car today. I ran it several times on the ground, don’t remember the PG whining. Shifted it today through all gears. Initially it hard shifted into all gears. Now R seems to engage smooth, and D to L seems smooth, but still a hard slam in D from Neutral.

The whine goes away in gear also.

This a common problem? Haven’t driven car yet to see how it upshifts.

gerg
Monroe, LA


Current cars and other fun stuff -> [gregblakeney.smugmug.com]

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Re: PG whine and hard shift into D
Posted by: Wagon Master ()
Date: March 08, 2023 08:55PM

At what engine rpm are you going from N to D?

"Run She May, Shine She Must"
Been Aircooled Since 1973
Northwest Ohio 45840

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Re: PG whine and hard shift into D
Posted by: gerg ()
Date: March 08, 2023 09:01PM

Sub 1000. If I had to guess, ~800-850.

Haven’t dialed it in completely.

I run my Rampside at about 625. I think this will need to be a little higher - haven’t looked it up yet.

gerg
Monroe, LA


Current cars and other fun stuff -> [gregblakeney.smugmug.com]

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Re: PG whine and hard shift into D
Posted by: Brizo ()
Date: March 09, 2023 03:36PM

Gerg, Did you rebuild the trans? It shouldn't slam into gear no mater how fast the idle is but a common cause is a broken accumulator spring under the band piston . Not sure about the whine unless the fluid is real low or something is wrong with the pump .

Dan Brizendine, Circle City Corvairs
'64 8 door Greenbrier, +.060, stroked 1/4", 188 ci, 140 PG. "In beautiful Wanamaker Indiana...with one stop light and 5 pizza shops"

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Re: PG whine and hard shift into D
Posted by: corvairsince70 ()
Date: March 09, 2023 04:31PM

Dan - do you mean the large return spring under the low servo piston?

Dennis
Nashville area

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Re: PG whine and hard shift into D
Posted by: gerg ()
Date: March 09, 2023 04:45PM

I did not rebuild this PG. Has been in my shop for about 8 years. Previous owner (trusted friend) said it drove fine when I got the car from him.

Fluid is full.

Is a true 140 PG - all markings are present. Pump cover, valve body, governor body & gear.

gerg
Monroe, LA


Current cars and other fun stuff -> [gregblakeney.smugmug.com]

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Re: PG whine and hard shift into D
Posted by: RobertC ()
Date: March 09, 2023 05:14PM

Which PG fluid did you use?

Probably just needs some road miles on it... After sitting so long...

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Re: PG whine and hard shift into D
Posted by: gerg ()
Date: March 09, 2023 05:20PM

The Dexron from Napa.

Same stuff we put in Steve's '62.

That is what I am thinking. I distinctly remember it slamming into reverse a few times the first day I shifted it. From D to L also.

Does neither of those now. Whine 'may' be a little quieter now too.

gerg
Monroe, LA


Current cars and other fun stuff -> [gregblakeney.smugmug.com]

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