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RichardNZ GRM+ Memberand Reader
11/7/21 1:38 a.m.

Good looking exhaust, not bad sound. 
Back when they were released Cycle magazine interviewed the Honda R&D guys who said they had designed the exhaust to replicate the noise made on takeoff by F4 Phantoms from a nearby AFB. Apparently Soichiro Honda came to visit and said he didn't like it and told them to make it sound like a Porsche 911 Turbo.

maschinenbau GRM+ Memberand UltraDork
11/7/21 8:15 p.m.

God I love this bike. Next time you come to Atlanta, drive it here so I can see and hear it please.

crankwalk (Forum Supporter)
crankwalk (Forum Supporter) GRM+ Memberand SuperDork
11/7/21 9:30 p.m.
maschinenbau said:

God I love this bike. Next time you come to Atlanta, drive it here so I can see and hear it please.

Ha! Come to the Mitty and hear the 240. Six barrels feeding six cylinders in a row...sort of the same thing. I don't think this will get outside of a 50 mile radius of Anchorage for a long time. wink

Tonight I did the "Mr. Mike Nixon On Bike Cleaning Method"  for CBX carbs on cylinder #6 that wasn't getting the exhaust as hot as the others.

To do this, you have to remove the "don't tamper with emissions by adjusting any screws" tab because you can't unscrew it without doing so. :

200 watt solder gun to heat up the glue:

and oozes right off:

Now you can twist like the good old days:


Remove glue in the slot with an Xacto knife.

Quick cleanup on the needle and slides which looked pretty good.

And spray both directions on the circuit:



That got me a much hotter cylinder 6 (unscientifically spraying water on the header) and changed the tone a lot. It's hard to really capture the sound on a phone with a motor with the choke off probably prematurely and 15*F air temps. It's just not going to sound like it will 100% warmed up with a load but it's in a much better place.

I know this will never substitute for a complete carb rebuild but I have all 6 cylinders and an idle so I feel comfortable riding it next season a little bit. I've owned the bike 3 1/2 months and bought it without hearing it run so I didn't think it would be this far along this soon with this little work. I'm not really a mechanic and it definitely shows sometimes. I am however very motivated and love this thing so I think that plus some good luck has helped speed up the project.



crankwalk (Forum Supporter)
crankwalk (Forum Supporter) GRM+ Memberand SuperDork
11/27/21 12:13 a.m.

Since I plan on having this thing for a very long time, I felt like I needed to join the club. Lots of the hard to find pieces were offered to me at very reasonable prices and freebies slipped in by these folks so I wanted to support them. Even threw in some back issues of the CBXpress magazine. Super helpful and organized group of folks that know every square inch of these bikes.

Literally every inch.

You just don't see groups doing this stuff anymore. Nerd level 10,000 stuff and I love it.


Also mini update, it's super cold here so I just wanted to tackle one little thing this weekend. I replaced the vinyl pinstripe on the rear section and added a new Honda logo for the one that rubbed off:


AngryCorvair (Forum Supporter)
AngryCorvair (Forum Supporter) GRM+ Memberand MegaDork
11/27/21 7:22 a.m.

In reply to crankwalk (Forum Supporter) :

That bike sounds hostile!

crankwalk (Forum Supporter)
crankwalk (Forum Supporter) GRM+ Memberand SuperDork
12/17/21 12:07 p.m.

I made a recent trip to Georgia and since shipping a chain and tires is $200 to Alaska, I decided to be that crazy person carrying a ridiculous box around the airport. Alaska Airlines is great with the club 49 membership and lets us ship a couple giant boxes for free. Once the tires and chain go on I should be able to get this thing tagged and put it on the road. Come on April!


crankwalk (Forum Supporter)
crankwalk (Forum Supporter) GRM+ Memberand SuperDork
3/12/22 7:12 p.m.

I finally got around to putting a new battery in this thing and when I pulled the old one out I had no idea it was this big. Probably the biggest battery I've seen for a bike.

Still snowing here so no rush on the chain and tires just yet. I need to find collectors motorcycle insurance that services my area since though I have a few bikes I'm only putting 200 miles a year on each. If anybody has any recommendations for companies that have those kind of policies on low use stuff let me know.

stuart in mn
stuart in mn MegaDork
3/12/22 9:13 p.m.

I insure my bikes through Dairyland Insurance, their premiums are pretty reasonable.

crankwalk (Forum Supporter)
crankwalk (Forum Supporter) GRM+ Memberand SuperDork
4/17/22 8:53 p.m.

Tires and chain are going on after work slows down for me in mid May but I did take it for a *gentle* spin around the neighborhood today to put my first few miles on it. Carbs aren't 100% but I ain't mad at them either. Coming right off the H1 before this, the CBX feels like a proper torque monster.

wawazat SuperDork
4/17/22 9:07 p.m.

That exhaust is a thing of beauty!

crankwalk (Forum Supporter)
crankwalk (Forum Supporter) GRM+ Memberand SuperDork
8/14/22 12:27 a.m.

It's tire day after 8 months of collecting dust.


This exhaust is more practical than the stock one I swear:


No corrosion on the inside of the Comstar wheels thankfully:

41 year old Bridgestones still held air but I wasn't riding out of the neighborhood on them:

A local guy has a mobile MC tire mounting and balancing business, North Star Cycles. Super convenient in this case.



I'd love a little more time to see if I can mess with the carbs but work is going to be crazy and it's going to rain for the next however long. It's starting to feel little like summer is slipping away up here. All good!

crankwalk (Forum Supporter)
crankwalk (Forum Supporter) GRM+ Memberand UltraDork
4/17/23 7:49 p.m.

Just moved back to Atlanta after 8 years in Alaska and I shipped the bike down. I found the best way to deter people from messing with it was to ship it in a trash can. cheeky Joking!

It took 6 weeks longer than my car and dealt with some serious weather but it should be all good. Eventually I'll have more time to mess with this thing (and ride it virtually year round if I wanted to). 

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