When adjusting the timing, how many degrees does one full turn make on a distibutor cap.

 

Well look at it this way, if you turned it one full turn from being right at TDC #1, it would be back at TDC #1.

In case you didnt know, there are 360 degrees in a circle.

 

Someone's a little bit of a smart-a**. (no flame intended)
I can see how it might be a little confusing.

 

I couldnt resist

No flame intended here either... not all of us are mathematicians

 

i'm confussed to, i thought 1 full turn was 360* too.

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ICON Motorsports
1st & 3rd
MM Black Diamond 538 F&AM

 

Unless he's talking about crankshaft vs cam degrees. The crankshaft spins 2x faster than the cam, so for every complete turn of the cam, the crank spins twice.

(Had to fix the goof up...)


[This message has been edited by JoelOl75 (edited June 09, 2001).]

 

If you want to get really confusing we could start converting to radians.
bsa

[This message has been edited by irocbsa (edited June 08, 2001).]

 

2pi radians

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89 Transam GTA, 350TPI, auto, 3.27 rear, dual cats, gray.
Magnaflow cat-back,
K&N open element,
Best E.T. 14.63@95mph

 

Since (as someone mentioned above but then putzed the conclusion) one full turn of the distributor is 2 full turns of the crank, which would be 720°. During one complete revolution of the dist shaft, #1 TDC occurs twice: once at #1 firing, and once when #1 comes to the top of the exhaust stroke and begins its intake stroke.

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"So many Mustangs, so little time..."
ICON Motorsports

 

Actually, the CRANKSHAFT spins two times faster than the CAM.

Actually, for every complete turn of the crank, the cam and distributor turn HALF a turn.

Actually ...TDC in mechanical terms does occur twice per each cam revolution. But, when setting an engine at "TDC", it's #1 piston is set at the compression stroke of the crank when said piston is at mechanical TDC. This is the common term (and engine position) for TDC.

Easy terms:
the Cam and Distributor spin ONCE (360°) for every TWO complete rotations of the Crankshaft.

Hence, as the question asks:
1) The distributor rotates a complete circle (360°) for every cam rotation.
2) The distributor rotates half a circle (180°) for one complete crank rotation.

This is getting crazy...Hehehhhh.



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86 Trans Am WS6 Black with tinted windows, ZZ4, Mini-ram, true duals, LT4 HotCam, AFR 195 heads.
***Too many other mods to mention***

"In the future, cities will become deserts,
roads will become battlefields, and the hope of mankind
will appear as a stranger" The Road Warrior

 

Or if you have Calculus on the brain: for every 2Pi radians turn of the distributor you have 4Pi radians turns of the crank. Sorry, have been in Cal 3 class all day and I want somebody else to suffer with me.
bsa