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De-mystification -- points' components' order of assembly

Points Based Ignition | Electronic Ignition Upgrade
kungfutoast
honda305.com Member
Posts: 12
Joined: Sat Jan 17, 2015 2:20 pm
Location: Portland Or.

Points Confirmation

Post by kungfutoast » Fri Feb 01, 2019 11:27 pm

Ok, Help me out here, banging my head agains the wall. I have a basket case CA77 in a Cl77 frame with all the issues. The big ticket item my small brain can't get past are the points. The diagram over at CMSNL https://www.cmsnl.com/honda-ca77-1960-1 ... FUXq89KjUJ Shows one point on the plate however everything on the forum shows two and my Stator/magno has two firing marks... More over, when I search the part number on ebay I get a totally different point 30202-259-003. The listed one on CMSNL is the same as I have on my plate. I ordered one off of fleabay and got a totally different, non compatible point.

The bike was donated to me. Total barn find with no history attached other than the PO was a hoarder. At first glance you would think the bike was complete and ready to roll. But I am finding this is not the case.

So, should the CA77 have 1 or two points and two condensers to complete the package? Am I spazing out for no reason? I am getting a spark but I am not getting detonation.

Thank you for any and all feed back even the make fun of me kind. :)

rrietman
honda305.com Member
Posts: 561
Joined: Mon Oct 13, 2008 6:45 pm
Location: bellingham wa.

Post by rrietman » Sat Feb 02, 2019 12:20 am

CA77--one set of points/condenser one f-mark on the stator. CL77 two sets of points/condensers two f-marks on the stator. It's the crankshaft configuration---180 vs 360. sounds like someone has mixed up some parts here. the crankcases are pretty much interchangable. how many carbs?
Good luck
Randy

DJM
honda305.com Member
Posts: 551
Joined: Thu Oct 09, 2003 1:54 pm
Location: Chesterfield UK

CA77 Points

Post by DJM » Sat Feb 02, 2019 12:17 pm

If the engine is a hybrid made up of both C/CA and CB parts the main issue here is whether it's a 180 degree or a 360 degree crankshaft. A 360 degree engine could have two carbs but still only need one set of points.

A 180 degree crank engine would need to have two sets of points to run but wouldn't work well with a C/CA (single carb) head.

kungfutoast
honda305.com Member
Posts: 12
Joined: Sat Jan 17, 2015 2:20 pm
Location: Portland Or.

Post by kungfutoast » Sat Feb 02, 2019 12:26 pm

Thanks for the feedback. There is one carb on the motor. The case has the CA77 stamped on it. I'm going to assume it is a stock CA77 just in a CL77 frame. I'll keep at it and order a new point and see if I can get combustion. The bike has good compression and everything is dialed in.

Thanks again!

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