I drove my car for the longest time reading low oil pressure. For years I let pro garages do all the repairs and none of the mechanics ever paid the least bit of attention to it and neither did I as a result The gauge always sat near zero and I always assumed it was reading inaccurately. A few years ago just cleaning the connector brought the gauge to life a little. A few months ago I finally replaced the sender and am now getting healthy pressure on the dash gauge for the first time. After a big romp through the interwebs about motor oil and newer formulations removing the Zinc from their formulas to avoid damaging catalytic converters, they effectually nerfed the oil for old cars like ours. So since then I've been using two quarts of VR1 with every oil change to get the Zinc/Phosphorus up to tolerable levels (rather than using straight VR1 which gets extremely expensive at $11+/quart for synthetic). The last few videos were enlightening for me because for the longest time I couldn't understand the fixation in communities about air/fuel ratio at idle, yet after seeing your results at idle I'm speculating that's more common with these cars more than it is an exceptional case. I figured that they were ignoring ratio at RPM and obsessing over idle but now I'm thinking the reason they were solely focused on idle is because that is where the problem is, and not that they were ignoring ratio at speed but that they weren't discussing it simply because it wasn't an issue.
@RestorationForBeginners
6 жыл бұрын
Yessir, the gauge is real finicky because not only the oil pressure sensor is delicate, but also the bullet-style connection is prone to getting fouled up. Something like the idle mix you can really dial in, but the general mix at other parts of the RPM is hard to control. There's just not a ton you can do to tune these "dumb", primitive ECUs. They're not programmable, and there's no feedback loop via an oxygen sensor. Basically, people who can't figure out the underlying issue that is causing their lean/rich issue end up trying to trick the ecu in terms of the inputs, most popular being that coolant temp sensor resistance pot. It's not a horrible idea if it just needs a little tweaking, I might install it just to play with it.
@ThompsonBMXbikes
6 жыл бұрын
Kick ass dude! This series is the best!!!
@billm83army
Жыл бұрын
Outstanding info!
@qqqqqqqq1407
6 жыл бұрын
So for the oil pressure you were talking about around 11:15. No your oil pressure should be high when the car is cold and get less viscous as the oil gets hot. And are you using 10w-30 VR1 oil? I never use 5w-30
@RestorationForBeginners
6 жыл бұрын
Yeah, I'm still confused by that. I'm using 10W-30 Mobil 1 Synthetic. Common sense says that it should be high when the oil is cold, and get lower as the oil gets warmer and more fluid. And yet, I saw the exact opposite with my mechanical gauge. Any thoughts on that?
@qqqqqqqq1407
6 жыл бұрын
Restoration For Beginners maybe the otc gauge is bad, which is weird. I have an autometer gauge and it works flawlessly.
@qqqqqqqq1407
6 жыл бұрын
Restoration For Beginners plus I wouldn't recommend using synthetic. Synthetic is mainly for newer engines. It has detergents in it. VR1 is what I use because it has high zinc content for the flat tappet cam.
@jeffwhite6920
3 жыл бұрын
Very well done young man... I live in Hendersonville NC and drive a 1978 280z. Where abouts are you located?
@amycyclenut
6 жыл бұрын
For what it's worth, my 240z service manual says oil pressure (warm at 2,000 rpm) should be 50-57 PSI (or 3.5 to 4 kg/cm).
@TRUTH4U2NO
Жыл бұрын
Why did yiu not rev the engine to show what the gauge reads and how it reacts?
@cottonbowen6531
6 жыл бұрын
love the car man
@RestorationForBeginners
6 жыл бұрын
Thanks, I love it!
@charlesmiller5078
6 жыл бұрын
What I would like to know is, what was the difference between the mechanical and the electrical gauges as far a what they are reading, esp when you go for a test or as you say a fun run. were they alot different, close. When I first start up my car the oil pressure is around 65, but as it warms up it goes down to around 50. Thats the way its always been in every ride I have owned. A mechanic once told me, dont worry about your idle pressure, dosent need much pressure when idling, but If the oil pressure dosent rise with rpms, then get real worried :) Good luck at the dyno. Do you have Triple A, you know for Towing. :)
@RestorationForBeginners
6 жыл бұрын
Yeap, makes sense, I'm with you. If you check out some of the "test drive" footage, you can see that the gauge reads something like 30-50 PSI of pressure at first start up, but goes down once the engine gets warmed up. I don't really know what causes that. Also, The gauge doesn't really move that responsively with the RPM, but I verified with the mechanical gauge that all is good under the hood in terms of oil pressure. No wonder most people choose to just ignore that gauge.
@michaelabrahim3694
Жыл бұрын
Michael
@davewm9589
6 жыл бұрын
Get yourself and old school Two stroke dirt bike, minimal muffler (1978 Suzuki RM400 as example) Crank that bad boy up, run it up and down the street a few times... the neighbors will love your car revving up at all hours as an alternative :)kzitem.info/news/bejne/smup02msgGR8hYo
@RestorationForBeginners
6 жыл бұрын
Jokes aside, there's a guy on the block who leaves his Harley idling past midnight. Drives me up the wall... Don't want to be that guy!
@charlesmiller5078
6 жыл бұрын
I live kinda in the Country, there's a guy that lives around a quarter mile away who builds race car engines, and apparently he uses a test stand ( Im guessing ), They sound like there hitting around 10,000 rpms, I guess a computer program runs them through a test. You never know when its going to fire off. But I will say they sound like solid engines, tho loud.
@davewm9589
6 жыл бұрын
old muffler shop "could have been johnny and mac by the rail road track the worlds largest and that's a fact"used to have a tv commercial (maybe some one else) "don't be a menace to society" :) along those lines I was tuning my RM up after adjusting the float height, got some not so happy looks from some of the locals. I only ran it up and down the street a couple times, oh well no more dennis the menace for me for a while.
@jorgeargumedo3352
2 жыл бұрын
I iike your videos, very informative. however you literally spend 13 minutes ruminating and only 2 getting to the point of the topic.
@d9inger
5 жыл бұрын
This is hard to watch with your head mounted video camera, dude get a tripod
@RestorationForBeginners
5 жыл бұрын
Apologies, it can be quite hard to get the camera on a tripod to capture what my hands are doing and also, tbh, it saves a lot of time for me since I never have to worry about camera placement. I'll try to keep my head still or use a tripod more.
@nathanmayo7101
2 жыл бұрын
Quit spinning the camera around. Your'e making me nauseous
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