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#41
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the HO Guys recommended that mod years ago. That being said the bypass is there for a couple of reasons: Filter plugged or very cold start-up conditions where the oil needs a path to the oil galleries vs shearing the oil pump shaft. That is why the OEMs test at -40 degrees F in Canada. Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
#42
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#43
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After reading a bunch of oil threads in here I've come to this conclusion.
1) No one here is interested in adding a by-pass filter. 2) No one even cares enough to run an oil analysis to see if the oil is even doing the job they think it is. 3) This tells me that most here aren't the least bit worried about the slight possibility that they may introduce a microscopic piece of dirt while pre filling their oil filter. I seriously doubt something like that is going to warrant a complete overhaul in our lifetimes. Most of us will be dead and gone before then. I think when you reach a certain age, you have to pick and choose your battles. Most of us have other things to worry about. Interesting discussion though. |
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#44
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Never going to get a consensus on this one. Just like, "Which brand of oil is best" I can say with confidence the following: 1. most new cars do not have an oil filter you can pre-fill because they are mounted in a way that you just can't do it. Most new cars have canister type filters, not spin on type. Can't pre-fill them. 2. new oil sold in bulk and distributed through a buildings plumbing system has a greater opportunity for dirt to be in the delivery system. 3. New oil is not as "clean" as you might like to think. 4. Never understood what exactly pre-filling was supposed to do?
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#45
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Really?? New cars have now went back to the old canister filters like we had in the 50's and 60's?? Wow that seems like a step back. Interesting.
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#46
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Dry new filter: i shake it for rattles, then finger wipe the center hole, then decide to fill it.
New Torque Converters can fail the shake rattle test...from weld balls. |
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#47
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I'm guessing it is to conserve materials ... much less metal to produce. Perhaps to help prevent problems with less than high quality spin-on filter casings, seals, threads etc.
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I'm World's Best Hyperbolist !! |
#48
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Quote:
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
The Following User Says Thank You to Tom Vaught For This Useful Post: | ||
#49
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Times 2 on post 43.
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1979 Trans Am WS-6 .030 455 zero decked flat pistons 96 heads with SS valves 041 cam with Rhoads lifters 1.65 rockers RPM rods 800 Cliffs Q Jet on Holley Street Dominator ST-10 4 speed (3.42 first) w 2.73 rear gear __________________________________________________ _______________________________ 469th TFS Korat Thailand 1968-69 F-4E Muzzle 2 |
#50
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Quote:
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73 T/A 455, 4speed |
#51
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I like Rainmans vids. He's a good mechanic, and pretty damn smart with his diagnostic work. That said, I always prefill my filters. Have engines with 200k+ miles on them, and every change I prefilled the filter. No abnormal engine wear, no bearing material in the filter, no lifter noises, etc.
If you dont wanna prefill it, knock yourself out. I'll continue to do it.
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"Those poor souls have made the fatal mistake of surrounding us. Now we can fire in any direction" 1970 Trans Am RAIII 4 speed 1971 Trans Am 5.3 LM7 1977 Trans Am W72 Y82 1987 Grand National |
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#52
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It's hard for me to take this guy seriously. He replaced bearings (rod knock) in car. That doesn't sound like something a two-micron-is-death guy would EVER do. And pointing at what the industrial sector does for justification?
I say Unleaded fuel is evil, because airports have Low Lead. Two stroke road bikes should come back, because logging. |
#53
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When you say no one is interested, you can't see how many people contact me via PMs to ask about the filters. You'd be surprised who already owns them, and they're asking me about parts and supplies, but for whatever reason won't subject themselves to all the critiquing on the board.
Let me say there are some prominent, respected people on this board that own, and use by pass filters, so the assessment that no one is interested is not at all true. I do see resistance by the same people that are set in their ways, and will never change, funny thing is, I used to be that guy that didn't think I could improve on what Detroit gave us, or didn't care to invest in one. The discussion always comes back to aesthetics on old cars, so if you don't have one and don't want one, that's fine. Thing is, I drive Pontiacs 100% of the time, they are my daily drivers 100% of the time, I don't drive a Honda, chevy Buick, etc. car, nor would I own one. For daily drivers it does make sense to use a by pass filter so I'm really not addressing the hobby cars for the most part. Although my hobby car will have one, clean oil is never a bad thing. I have noticed some of the performance shows on TV paying a bit of attention to by pass filters in the last 5 years or so, so I don't think everyone that owns a performance car won't use one because of aesthetics. When I see some pictures of engines that have failed shortly after a build, and see bearings torn up for no apparent reason, you know that there was something run through them. Could those engines been saved, maybe, maybe not, each circumstance is different. It sure wouldn't hurt though to have another line of defense that makes a full flow filter look about as efficient as a piece of window screen. Did someone put a filter on that had foreign material in it, did they contaminate it unknowingly? Mike G has posted as I have, that just because you have a new container of oil, doesn't mean that it isn't contaminated, and is pure and clean. Quaker State had clear containers for a short period of time, and then did away with them. It's a possibility someone looked at something in the container that wasn't supposed to be in there. I've seen some questionable stuff at the bottom of oil bottles in the last 55 years. Remember where crude oil comes from, it's buried in the ground, and sometimes the ground gets into the finished product, along with corrosion, and sediment in the processing equipment. Flame on.
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Brad Yost 1973 T/A (SOLD) 2005 GTO 1984 Grand Prix 100% Pontiacs in my driveway!!! What's in your driveway? If you don't take some of the RACETRACK home with you, Ya got cheated |
#54
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Now I’m scared to pour oil in the valve cover much less the filter I’m going to start using a paint funnel before I pour it in.
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#55
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It probably needs to go through a by-pass filter before it hits that funnel
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#56
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What if the funnel is dirty?! I'm just going to stop putting oil in my engine to keep it clean.
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Ken '68 GTO - Ram Air II 464 - 236/242 roller - 9.5” TSP converter - Moser 3.55 Truetrac (build thread | walk around) '95 Comp T/A #6 M6 - bone stock (pics) |
#57
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LOL you guys are killin me
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#58
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I am not even sure if we have available paper filters with a built in by pass these days. Maybe we do but I am no fan of blocking the PMD by pass. Dirty oil is better than no oil. |
#59
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Wix filters state they have a bypass valve. Some filter companies just call it a differential pressure relief valve. It's there in case the filter gets clogged.
So I did a quick search to see if others pop up and surprisingly enough it's stated in several articles that most of your paper spin on filters now incorporate a bypass valve. I know the Wix does because I cut those open on a semi regular basis. I haven't cut open any other brand in a long time so can't say for sure. |
#60
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Yep. My wife’s Camaro has a canister type oil filter.
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“It takes considerable knowledge just to realize the extent of your own ignorance.” Dr. Thomas Sowell |
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