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Buffo

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tired of timing
« on: July 07, 2005, 06:41:05 PM »
I am tired of trying to time my 1978 CB750K8.

I have the carbs off of my bike right now so it wont start but I wanted to check the timing and point gap. So I got out the trusty ::) clymer and went to work.

First I adjusted the points to spec. (3-4mm) and to time the pile It said to hook up the "homeade timing light" at the blue wire and ground the ground and "at the instant the points should begin to open the timing light should come on". page 54 (with the ignition on)

The problem is my light is ALWAYS on the blue wire is always hot. so It doesnt matter if the points open or not, ALWAYS on. Is this wrong or is the clymer up to its usuall tricks? ???

Second could one check the timing with an induction timing light by hooking it up and then pressing the starter button? In a case like mine with no carbs on it? Would it be accurate?

Maybe thats just a stupid question. :(

Don
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Offline Clyde

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Re: tired of timing
« Reply #1 on: July 07, 2005, 07:00:18 PM »
The points gap should be 0.3-0.4mm (or .012" to .014"). If you are setting at 3.0 to 4.0mm then the light will stay on all the time. The light should be grounded with one lead and the other should be on the lead connecting to the poiints. If this is done and the gap is correct then you will see, as you rotate the crank, the light go out and come on when the points open. Check that the points are closing and that they are clean.
I have used this method for years using an old indicator with two leads and alligator clips on the ends.
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SOHC4 #1909
Honda CB750 K0(original and unrestored), K1(in pieces), K2(restored), F1(restored), 76 750a (awaiting restoration), 1966 Honda CB72
Suzuki GT750 1972 (restored), Kawasaki Z1 1973 (restored)

Offline Bob Wessner

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Re: tired of timing
« Reply #2 on: July 07, 2005, 07:12:40 PM »
As Clyde says, static timing does work and the bike will run quite well if you do it accurately. As to the static timing light hook-up spots on the points plate, maybe this will help, this is where I connect them, had occasion to do it today as a matter of fact.

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Offline Terry in Australia

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Re: tired of timing
« Reply #3 on: July 07, 2005, 07:40:06 PM »
What do you call those things again Grampa, "points"? Geez, can you still buy them or do you have to make your own? Ha ha, get yourself a Dyna S Don, and you can glue that cover on mate, you'll never need to look under there again! Cheers, Terry. ;D
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I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

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Buffo

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Re: tired of timing
« Reply #4 on: July 07, 2005, 08:37:20 PM »
I just miss typed. I set the Points at the correct setting...   .3-.4mm

but anyways the light still stays on

Don
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Buffo

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Re: tired of timing
« Reply #5 on: July 07, 2005, 08:39:45 PM »
I am going to order the Dyna s, dyna coils and plug wires tomarrow.  The cheepest I could find the Dyna s was $185.00 that doesnt include the coils or wires.

Do you gurus know where I can find them cheeper?

Don
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migopod

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Re: tired of timing
« Reply #6 on: July 07, 2005, 09:08:44 PM »
mpsracing.com has the dyna s for $153.  Their site is evidently in bad ASP tho' so it takes exactly one million years to load.  Coils are extra, of course, and are around $111 a pair.    I bought mine from them,
and was pretty happy with the result.

Yay to no more point gapping!
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Offline kghost

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Re: tired of timing
« Reply #7 on: July 07, 2005, 09:51:22 PM »
You buy the beer and pizza, I'll come down and time them points for ya. Save the money.

Will be home Saturday, could come Sunday or Monday.
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Buffo

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Re: tired of timing
« Reply #8 on: July 07, 2005, 10:01:11 PM »
I JUST ordered all my stuff: dyna S, coils and wires. I shocked the Sh!t out of myself, got mad and ran to the internet, credit card in hand. However you are more than welcome.

Don
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Offline Gordon

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Re: tired of timing
« Reply #9 on: July 07, 2005, 10:05:23 PM »
Never shop angry...  >:(

Although, you won't be disappointed.
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eldar

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Re: tired of timing
« Reply #10 on: July 07, 2005, 10:29:38 PM »
More than likely you just have the plates set wrong and so the points are not clsing properly. Otherwise you may have wires connected to the wrong spots. I have the EXACT same bike you do and I dont know if I will ever buy a dyna S. My timing is dead on and I did it by eyeballing it. Did not even gap them with a gauge. Works perfect. I might do hotter coils though.
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Offline Terry in Australia

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Re: tired of timing
« Reply #11 on: July 07, 2005, 11:31:06 PM »
Only problem with that Eldy, is that if you buy hotter 5 ohm coils to go with your points and then decide that the Dyna S really is a necessity, you'll need to sell them and buy some 3 ohm coils. Sure, coils are cheaper so a good place to start, but my experience is that the Dyna S works fine with stock coils (on a stock engine) because the coils really aren't the problem, it's those antiquated points. Cheers, Terry. ;D
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I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline oldbiker

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Re: tired of timing
« Reply #12 on: July 08, 2005, 01:04:49 AM »
Properly set points are perfectly adequate for 99.9% of bikes. The main advantage of electronic ignition is that they normally never need re-setting or maintaining. I'd certainly find a better use for a couple of hundred dollars.
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Offline TwoTired

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Re: tired of timing
« Reply #13 on: July 08, 2005, 01:19:16 AM »
Quote from: oldbiker on July 08, 2005, 01:04:49 AM
Properly set points are perfectly adequate for 99.9% of bikes. The main advantage of electronic ignition is that they normally never need re-setting or maintaining. I'd certainly find a better use for a couple of hundred dollars.

I gotta agree.  Points work just fine.  Been tempted by the Dyna many times, but then there's the $$$.  Probably would have gone for it, if it was half what they were asking for it, though.
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Lloyd... (SOHC4 #11 Original Mail List)
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Offline Bob Wessner

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Re: tired of timing
« Reply #14 on: July 08, 2005, 01:56:33 AM »
Quote
What do you call those things again Grampa, "points"? Geez, can you still buy them or do you have to make your own? Ha ha, get yourself a Dyna S Don, and you can glue that cover on mate, you'll never need to look under there again! Cheers, Terry. 

Runs fine with those dinosaur points. Besides grandpa would rather spend the $$ on his grandson.  ;)
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Offline dpen

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Re: tired of timing
« Reply #15 on: July 08, 2005, 05:00:14 AM »
The best thing about points is that if they stuff up far from civilization you can butcher them up to get you back.
Then again, Fs don't go far from civilization do they?
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Offline Terry in Australia

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Re: tired of timing
« Reply #16 on: July 08, 2005, 05:40:24 AM »
Very true Dave, but in the 20-odd years since points ignitions were discontinued (you won't find one in any engine now, not even a weed wacker) I haven't seen too many modern bikes sitting on the side of the road with a disabled ignition, and I've spent a lot of time in the more uncivilised areas of this big brown land.

I can understand the argument of the cost of a new dyna S prohibiting the purchase for some of our guys, I've been very lucky to have bought several Dyna and Martek ignitions on EBay for the cost of a set of points over the years, and lucky for me every one I bought worked, ha ha!

I won't enter into the "F vs K" wars, apart from being silly, I own an F2 and two K2's and anyway, I love all 750/4's, even those "nice" F1's, ha ha! Have you got the CD yet? Cheers, Terry.
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I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline dpen

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Re: tired of timing
« Reply #17 on: July 08, 2005, 11:52:41 AM »
Always worth wetting a line to see if there's a bite.
Got the Cd yesterday arvo thanks Terry.
Video sent off yesterday (a bit late 'cause one machine started chewing tapes).
Will check the cd when computer is fixed (electrical things hate me)
One of my drivers is going to burn G'rider for his son (he's paying!) so i'll fling you one when they're done. Meanwhile watch the video to whet your appetite.
Dave
« Last Edit: July 08, 2005, 12:42:10 PM by dpen »
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Buffo

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Re: tired of timing
« Reply #18 on: July 08, 2005, 04:54:08 PM »
I sprung for the Dyna S, the Dyna 3.0 ohm Coils and the dyna wires. When I was checking the timing I realized that I didnt want to HAVE to do this. I got the Sh!t shocked out of me when I grabed a plug wire and the wires Have seen better days.

I own a restuarant so I dont have a lot of free time and the last thing I want to do with the little free time that I have is Is work on a part of my bike that I could make maint. free.

The whole package cost me $283.20 and thats not bad for my time

Don
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