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#21
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Yeah I do, whats always stopped me is Im pretty sure the builder told me that he had them set a 1/2 turn. In fact I think it was him that told me I could go to 3/4 first. That said, I cant remember for sure, and the poor guy up and died. So Ive just never done it because Im not sure my information is correct on the original set.
I know I could just re do all 16 valves, but the motor runs strong, and its just noise right?
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1967 Firebird 462 580hp/590ftlbs 1962 Pontiac Catalina Safari Swapped in Turd of an Olds 455 Owner/Creator Catfish Motorsports https://www.youtube.com/@CatfishMotorsports |
#22
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Quote:
No need to do the whole thing over. Just go 1/4 turn down from where they are now. IF they were set correctly in the 1`st place. Is that thing quiet when cold and then clacks when hot? That`ll give you a clue. |
#23
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I would still want to pull the valve covers and confirm that all the push rods are spinning.
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I do stuff for reasons. |
#24
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Push rods spinning with a roller cam?
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#25
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Slap on forehead taking place now!
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I do stuff for reasons. |
#26
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Quote:
And my engine clacks pretty much all the time. 10-30, 20-50. Doesnt matter.
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1967 Firebird 462 580hp/590ftlbs 1962 Pontiac Catalina Safari Swapped in Turd of an Olds 455 Owner/Creator Catfish Motorsports https://www.youtube.com/@CatfishMotorsports |
#27
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I don't know if it's been mentioned before in this thread but just note that going purely by turns to get to a certain decimal preload is not taking into account your rocker ratio that is always above 1 to 1.
For instance if spinning your adjustment nut 1/2 a turn drops the nut down the stud by .030" than on the lifter side of the rocker that is a 1.5 ratio you would have preloaded the lifter plunger by .045", not by .030"
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I do stuff for reasons. |
#28
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I have one sticky lifter that occasionally ticks bad on cold start and then goes away in a couple minutes, but even after that, my valvetrain is always just a little bit ticky. It's annoying hearing it when I'm cruising since it's just barely audible to a point where I can kind of not notice it, but then I get reminded of it immediately again when I drive past something that deflects the sound like a guardrail lmao. Could be an exhaust leak, for all I know. Noisy lifters are so common with Pontiacs that I've gotten used to it, and I don't think it's anything bad going on - my oil pressure is 35-40 PSI at 750 RPM idle with 10W30 and at operating temp, and I never see glitter in the oil changes I do, so I guess it's fine.
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1979 Trans Am W72 400/4-Speed WS6 - Starlight Black Hardtop
Last edited by nUcLeArEnVoY; 09-09-2022 at 11:32 AM. |
#29
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Lifetime Goat - Do they make noise at any RPM, or just at idle?
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. 1970 GTO Judge Tribute Pro-Tour Project 535 IA2 http://forums.maxperformanceinc.com/...d.php?t=760624 1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car https://forums.maxperformanceinc.com...ght=procharger Theme Song: http://www.youtube.com/watch?v=7zKAS...ature=youtu.be |
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