Finding Top Dead Center
ฝัง
- เผยแพร่เมื่อ 18 ธ.ค. 2024
- Engine Power co-host, Pat Topolinski, goes over finding top dead center. It happens on anything that uses a distributor to light the fire. Because the crankshaft spins twice as fast as the Camshaft, TDC on the balancer will occur in two different places: one on a compression stroke and the other on the split overlap. Pat explains the process in detail.
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That’s the best explanation of timing being 180 degrees out that I’ve seen. I didn’t realize that both valves would be open on cylinder number 1 when timing was 180 degrees out. I also like where you pointed out that even though the distributor gear was in the proper position with the cam gear, you can still rotate (bump) the distributor until the distributor drive engages.
Pat is THE BEST 👌.
FANTASTIC VIDEO. Simple to the point. And also a great way of indexing the distributor/oil pump shaft, which to me is the biggest pain to drop in. Rarely have I ever been lucky enough for that to line up and drop into place first time.
Why not 0 to 0 on balancer and pointer and drop distributor in so that the rotor button is pointed at number 1 cylinder?
Because the distributer could be 180 if they put it on the exhaust stroke.
thanks for the video for me the part at 1:36 was super helpful for me ensuring I was on the compression stroke. thanks
yeah,
So if mine calls for 5 degrees btdc , do I set it a 5 then drop the distributor in? Or set a 0 then set timing?
My Haynes book says dont turn the crankshaft without distributor in. 1987 5.7 liter chevy g20v. Can I just turn crank the engine with the bar and it will seat in automatically?
Yes by hand
Can you explain how to find TDC on a 3 cylinder diesel, that has no marks on the pulley.
Nice video. Very clear.
Why set to 30* and not 0*
Will this work for a non distributor system? I have a Ford 4.2l v6.it uses a camshaft synchroniser and sensor..
why is he installing dizzy at 30 degrees?
very useful video, thankyou
Ok set it 180 off and let’s see the flames.
great work.thanks
I have a 350 snd I took the number 1 plug Snd turned the engine till it blew air out and the valves both were closed then kept turning the balancer till it hit zero and installed the distributor to point at 1 but still no start .what am I doing wrong
Hey did you ever figure out what was wrong I’m running into the same problem now ?
why 30 as apposed to say 12 degrees?
His timing marks are set on degrees 10 degrees = 4
30 degrees = 12
@@bentleycoupe7969 wtf... lol.. 30 degrees btdc is 30 degrees btdc...
@@bentleycoupe7969 lmao WAdafuq, ok why 30° btdc as opposed to 0°tdc?¿
??
Just to say he sets it at 30* because that's total timing assuming you have no timing gun and also a very nice balancer
Setting it to 0* is how to get the engine to start, needs more advanced after startup
I'm working on a 1974 Ford F100 302 engine. Im having problems with it not going past 35mph. i have done a vacuum test & timing as well. but still won't go past 35mph
Because it runs bad or the engine runs good but something is limiting it?
Hi my name is Alex I have an 89 Ford Mustang Fox body we put a 349 crate it's boarded it's performance how can I get it on right timing help
check crank case pully or balenser fo tdc mark this put on at the factory every eng should have tdc on somthing if its off very much it will not start if starts you are close you need a timming light to see exactly where it firing you do not leave it at tdc most eng run better a few deg before tdc i set up on 4 deg before tdc that desides when it fires the rotor deside where it fires (which plug) the points go open at TDC that starts current flow in coil thru condenser causing coil to generate high voltage spark all this happens very fast,(LOL)
So... Click-start Click-start Click-start...feel finger presser? Seems like there's a step or several missing.
What do you mean by setting to number 1 on distributor?
#1 piston
The distributor facing number one
you need a fireing order for your eng to see where each plug wire goes its like clock #6 wire is in 1 oclock spot lift top off dist rotor will be pointing at 1 oclock position if you eng will start and idle you real close you can loosen the bolt that holds dist down if you have deg marks all you need to conn timing light to #6 hold it over crankcase pully see where its flashing mine calls for 4 deg before tdc you slowly rotate dist while watching flash stop rotation on #4 tightion dist bolt
Awesome..
Lets see how you do a Jeep Cherokee XJ 4.0 with a set distributor
Awesome!!!!
43 years working on cars all my life never heard of "split overlap", is that one of the 57 genders ?
Only heard it called Overlap for the last55 years of my life.
im 88 started tinkering eng at 10 yrs old 5 horse outboard never run into overlap ?????????
Dude!! Can I borrow a pen?
What a terrible video. At no point does it show how to verify actual TDC. The title should have been "How to Fit a Distributor".
Wow
2 ups for a 4 stroke
This was too quick for me
BOYS&girls ever used a kleenex/paper towel?, take a piece of paper towel put in #1 plug hole(b carful)
Crank engine compression will blow piece of towel out of plug bore,line up timing mark tdc to pointer
SBC dist rotates clockwise
1-8-4-3-6-5-7-2, most sbc
the #1 is around11/12 o clock on cap...pls ck. Hope this helps.
Ya if your balancer is correct lol
Lektrik caws goon put holelotta peepols outa jobs
Dude English please.