Re: Packard 359 lifter/tool valve clearance to big?
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Home away from home
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Not sure, but how are the guide tolerances doing?
Posted on: 11/14 6:06
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1955 400 | Registry | Project Blog
1955 Clipper Deluxe | Registry | Project Blog 1955 Clipper Super Panama | Registry Email (Parts/service inquiries only, please. Post all questions on the forum.) service@ultramatic.info |
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Re: Packard 359 lifter/tool valve clearance to big?
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Home away from home
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That does seem to be backwards, if anything I would expect there to be less clearance. You may want to consider replacing a few valves. Maybe someone previously ground the stems and ground them too much??? How much more than .070" are they? On a positive note as the valves & seats wear your clearance will get better.
I would agree with HPH, check the valve guides for wear. I had some very worn guides on my 327. I think the valves on these engines did not always get good lubrication and are prone to wear. Also check your valve stems for wear, I had some that were worn on one side. Did you clean and test your lifters? Replacing some?
Posted on: 11/14 11:20
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Re: Packard 359 lifter/tool valve clearance to big?
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Just popping in
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I dont know how to check/measure but what i can feel by hand the clearance is a fair bit😄 and yes maybe drive with this a bit more and the valve clearance willcome closer to the 0.070 😅 could it be someone did work on the car in the past and maybe grind down some valves but to much or had wrong clearances in mind... i was in full ok now i have to grind down 16 valves mode did check 1 cilinder 3 times. Tdc yes comp stroke yes got the right gauges.. damn grinded valve seats but stems still to short.
Posted on: 11/14 11:54
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Re: Packard 359 lifter/tool valve clearance to big?
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Forum Ambassador
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Quote:
Green wrote:.....I've lapped the valves with the lapping paste all 16 some only for a bit others like ex for cil 3 and intake 4 and 5 need some more work. Ex valve from cil 3 did not seat good all the way and the other two had more pitting...... I'd consider recutting the valve seats for those cylinders which still do not seat easily after lapping.
Posted on: 11/14 13:54
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Mal
/o[]o\ ==== Bowral, Southern Highlands of NSW, Australia "Out of chaos comes order" - Nietzsche. 1938 Eight Touring Sedan - SOLD 1941 One-Twenty Club Coupe - SOLD 1948 Super Eight Limo, chassis RHD - SOLD 1950 Eight Touring Sedan - SOLD What's this? Put your Packard in the Packard Vehicle Registry! Here's how! Any questions - PM or email me at ozstatman@gmail.com |
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Re: Packard 359 lifter/tool valve clearance to big?
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Home away from home
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If you're referring to valve guide clearance as being a fair bit then you should probably replace valve guides. You can get a set of small hole gauges off Amazon for not much money. You'll probably find that the valve guides have an hourglass shape, and I'll bet cylinder 4 & 5 exhaust valve guides are worse than the others.
Posted on: 11/14 15:49
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