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Every Thursday

8pm, meet in the BP gas station at 25th and Poplar.

We do a ride through Fairmount park and then end at one of the bars in the city, drink some beers. Normally the North Star. Just depends. Come do a ride with us.

Every Sunday

10 - 11am, meet at the Green Line cafe at 43rd and Baltimore.

Get 30% off your breakfast order if you come on a cycle.

We hang out for a bit, then do a ride through Fairmount park afterwards. Come meet up.
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cb650 engine rebuild

I just finished rebuilding my cb650 engine.

The engine leaked a shit ton of oil from the rubber o-rings around the head gasket. (Common 4cyl problem on old Hondas.)

My engine fins have always been completely covered with caked on oil, grease and dirt. If you didn’t already know, the engine fins are what cool your engine. So to say the least, my engine prolly wasn’t properly cooling itself as much as it should have been. No matter how much I cleaned it, 2 weeks later it was gross again.

In my plan to reduce overall engine temperatures, and efficiency, I’m doing a new gasket kit, having the cylinder jugs measured, and having the cylinder head pressure tested to see if everything is still within spec. Possibly installing an oil cooler.
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Jul 25

cb650 engine rebuild
Step 4 of 4

cb650, how-to 6 Comments

The 650 rebuild is finished. It’s running pretty damn good. Going easy on it for the first few hundred miles.

Here’s what I did in the last step:
- Re-did my wiring, I cut out about half my wires. Props to Adam!
- Installed oil cooler
- Spot-painted frame
- Re-mounted gauges lower and tighter
- Installed new rings, assembled engine. Props to Nick!

- Original wiring

- Shit we cut out

- New wiring… streamlined!

- Ready for the engine to go back in

- All back together

- Gauges mounted lower and tighter

- Custom headlight switch, mounted in fork ear
- Oil cooler adapter plate which makes the entire cooler set-up work, purchased from: www.randakks.com

Thanks to everyone who helped. Couldn’t have done it without you guys. Extra special thanks to Adam, for his intricate wiring knowledge, and Nick for his master engine expertise.

-Ed

6 Responses to “cb650 engine rebuild
Step 4 of 4”

scott Says:
July 25th, 2010 at 6:26 pm
Fantastic!

I think you made the all right choices with the re-build and believe the oil cooler will alleviate any future charging issues!
admin Says:
July 26th, 2010 at 10:36 am
thanks scott, I sure hope so!
-ed
dan Says:
July 26th, 2010 at 6:32 pm
Looks awesome man, can’t wait to see it.
shelton Says:
August 3rd, 2010 at 1:25 am
looks great!! I’m inspired to rewire my kz 750 twin now!!
blair oakley Says:
August 4th, 2010 at 9:43 pm
bike looks great i have a 1980 cb650c what main jets did you use i have the same set up as this pods and 4 to one header the bike iseems to run hot
admin Says:
August 5th, 2010 at 7:49 am
just made a new post with all the info… hope it helps!

http://www.chinonthetank.com/2010/08/cb650-pod-filters/