Topic: Are these points still good? and how important is static timing?

[ChopSticks]

Alright so I've finally got my OEM Toyo points, it came assembled, I suppose I can do a quick gap check but is anything else needed or do I just unbolt the other one and mount the new one? I know that if you switch points it comes with some little oil packet, do I need to oil the new points of a brand new assembly?

[grcamna2]

Alright so I've finally got my OEM Toyo points, it came assembled, I suppose I can do a quick gap check but is anything else needed or do I just unbolt the other one and mount the new one? I know that if you switch points it comes with some little oil packet, do I need to oil the new points of a brand new assembly?

I would lightly lube the little felt 'wick' at the bottom of your new points plate if it's dry(they usually have it moist from the manufacturer)but it probably is good.When you remove the old plate it would be good to service the advance mechanism which is detailed here on the forum.I think it wouldn't hurt to make sure the contact surfaces are clean by inserting a clean,new dollar bill between each set of points and lightly(w/ only slight pressure on the points return spring)run it through them a couple times.

[ChopSticks]

Will do, what should I search for for servicing the advance mechanism?

https://www.google.com/?gws_rd=ssl#q=site:forums.sohc4.net+advancer+mechanism

Only coming up with spring related threads.

Is the servicing outlined in the HM manual?

[grcamna2]

Will do, what should I search for for servicing the advance mechanism?

https://www.google.com/?gws_rd=ssl#q=site:forums.sohc4.net+advancer+mechanism

Only coming up with spring related threads.

Is the servicing outlined in the HM manual?

Do you have the HM book? that will certainly explain it.

[mystic_1]

There's not really much to servicing these, there's really only a few parts:

The advance body
The advancer cam
the advancer weights (2)
the advancer weight clips/washers (2 sets)
the advancer springs (2)


From memory, rotating the cam slightly should unlock it from the weights and allow you to pull it off.  Take note of the index marks and mark orientation if needed:  http://forums.sohc4.net/index.php?topic=124084.0

Once the cam is off you can unhook the springs from the weights.

You can then remove the clips holding the weights on their posts, and remove the weights.

Reassembly is the reverse of disassembly.


Now, the fact of the matter is that I've never had to remove the weights from the assembly, because there was no reason, i was just cleaning and lubing things, so just a drop of oil on each weight pivot, and a touch of oil between the cam and the advancer, is all I've ever needed to do.

Unless yours is rusty, bent, or caked in mud, or if you want to mess with your advance curve, you shouldn't really need to be doing much to it.


Here's a pretty good thread about the advancers in general:  http://forums.sohc4.net/index.php/topic,34454.0.html

mystic_1

[ChopSticks]

Thanks I just got the HM manual earlier this week, haven't had a chance to even open it yet. but based on the link provided doesn't look like he's too sure they are the same in the F models

I don't know if it is the same as the "F" bikes' advancers.

and I'm not sure how comfortable I feel at the moment toying around with it (trying to work out the current problems) I think I'll just try to clean them up as much as possible and put a drop of oil here and there. Any idea if I can use sewing machine or clipper oil? does it really matter?

Also anyone know the torque setting for the locknut on the advancer that holds the points assembly plate?

[mystic_1]

The advancer locknut doesn't hold the points plate, it just secures the advancer to the end of the crankshaft.

I want to say the advancer shaft is smaller than 6mm, probably more like 4mm?  Standard torque on a 6mm fastener is 5 lb-ft, the nut on the advancer is gonna be less than that.

I've never torqued one with a torque wrench.  Slightly more than snug with a 1/4" drive socket will hold it in place.  Use a drop of blue locktite if you want some insurance.

mystic_1

[PeWe]

The advancer springs can be too soft. The idle will be bad when full advance will happen way too early. I adjusted my springs, got good idle and full advance at around 2600-2800 rpms.
I wrote about it and did the HondaMan trick, cut the springs 1/2 wound. I did both, possible to adj 1 spring to start with.
http://forums.sohc4.net/index.php/topic,131339.msg1464986.html#msg1464986

I have now TEC points and Hondaman ign module and it work very well. (OK with electronic ign too as I used earlier)

I have also used the nut to rotate the engine when adjusting ignition and valves back in the days. I think that this must be done without plugs in. Adv unit pin into crank will get some forces.
My advancer has rather big play. I have verified the true TDC so I know which position of avd unit that is correct, max counterclockwise. If setting adv plate max clockwise the F and T marks will align with case mark 2mm earlier then true, cam will be a few degrees wrong when using adjustable cam sprocket when TDC marks are wrong (T).

[seanbarney41]

I feel like guys are getting wayyy to far over the original posters head.  Lets help him by sticking to the basics.  For now, as long as the advancer is not sticking, you should be good to go.

[ChopSticks]

Been MIA for a little bit since the garage my bike is at was inaccessible. Any who finally got to mount the new points plate yesterday and set the static timing (which recouped a little faith back into this).

Anywho was just curious if anyone knew what the purple dots meant? This is a oem toyo full assembly

[mystic_1]

Those look like "witness marks" to me, markings made during assembly at the factory to verify that fasteners have been tightened, assemblies have been inspected/tested etc.

mystic_1

[grcamna2]

Been MIA for a little bit since the garage my bike is at was inaccessible. Any who finally got to mount the new points plate yesterday and set the static timing (which recouped a little faith back into this).

Anywho was just curious if anyone knew what the purple dots meant? This is a oem toyo full assembly

Nice points plate  were they difficult to find ?

[PeWe]

I bought my TEC Plate from Jtmarks77
http://www.ebay.com/itm/Honda-NOS-CB750-750-K0-K1-K2-K3-K4-K5-76-77-Point-Plate-30200-300-154-/321299109557?vxp=mtr&hash=item4aceeb56b5

I have seen other NOS ignition parts , Koyo. Good as TEC?

[ChopSticks]

Nice points plate  were they difficult to find ?

Not at all, but finding them at a decent price (most sites charging shipping based on price not weight =/) took a little price matching finagling. Gearhead ended being the winner, 10/10 would buy from them again