SuzukiSavage.com - Ignition Timing

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Ignition Timing (Read 51 times)

Helio

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Ignition Timing
06/06/18 at 02:55:31

good my friends
I have a question about the ignition point.
Not having the head mounted, the piston when it is in TDC point, the timing marks on the flywheel are correct, but as there are two TDC point, one in compression and the other in exhaust.
How do I know that tdc is in compression ???
(Is it possible that I can mount the head, be well mounted and keep sending the spark of the sail in TDC exhaust) Is it possible to correct?
Hence my question.
Sorry for english

Thank you

Hélio

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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Ignition Timing Reply #1 - 06/06/18 at 03:00:20 The only difference is the cam position. You decide which time it's exhaust and compression by the cam. Get everything lined up and put it together with the cam lumps away from away from the lifters. That's compression.
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Helio YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 4	Re: Ignition Timing Reply #2 - 06/06/18 at 03:46:41 This is my confusion, if I'm going to mount everything right, and every two times that the piston comes to the TDC and the sparkle only gives 1 spark (in compression), how do I know I'm mounting on the compression TDC? ? It must be just confusion in my head ... Thank you
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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28755 L.A. California Gender:	Re: Ignition Timing Reply #3 - 06/06/18 at 07:33:33 The answer is... it simply doesn't matter. The bottom doesn't care, TDC is TDC that's all it knows. The top just cares that TDC is TDC and it sorts out when compression is.
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Fast 650 Senior Member Offline SuzukiSavage.com Rocks! Posts: 392 Valrico, FL Gender:	Re: Ignition Timing Reply #4 - 06/06/18 at 07:40:42 It will spark every rotation. Cam timing determines whether the spark ignites the fuel/air mixture or if it is a wasted spark.
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Ignition Timing Reply #5 - 06/06/18 at 07:46:08 d the sparkle only gives 1 spark (in compression), Ahh, I didn't realize you were concerned about getting the sparkle plug to sparkle when the piston was up. Our system is so crude that it sparkles every time the piston hits TDC, whether it's compression or not.
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batman Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 3806 osceola new york Gender:	Re: Ignition Timing Reply #6 - 06/06/18 at 08:09:04 The sparkplug fires every time the piston reaches TDC ,both on the compression stroke, and on the exhaust stroke, so you just need to place the piston at TDC and place the cam with the lobes down and the marks even ( or close depending on cam chain stretch) with the seam of the head ,and your good to go.
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Helio YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 4	Re: Ignition Timing Reply #7 - 06/06/18 at 14:20:32 Dear friends, thank you very much for the explanation, now I am more rested and with no doubt in my head .. Thank you all.. greetings; Hélio
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