Hey PJ, it is a tight squeeze, primarily because the channel under the tank that sits over the spine of the frame was slightly too narrow for the ignition coils. I expanded the width using a ball peen hammer. Didn't take too much convincing...
378cc? What pistons??Cool. I have too many unfinished projects already so I guess I can add 'find nice CB350 tank' to the list as I always intended to build four CB'378' 360's
I agree. The decision to abandon the original tank was made by mother nature, but when I saw that 350 tank hanging up in the local salvage yard, I was determined to make it work.
That looks good. The exhaust is 2-into-1? I imagine that modern muffler is pretty quiet.
Both exhausts were 2into1. The old one I hastily fabbed from cannibalized stock headers. The current one I built with equally long primary tubes based on LDR’s recommendations for diameters and lengths. The muffler is actually pretty loud, quiet at idle but sounds good under load, no rasp! Ever looked into a modern dirt bike can? They’re pretty much straight thru with fiberglass mat insulation. Once I have the carbs back from crazy PJ I may add a lollipop baffle
Nice work there. I bet it looks good under all that mummy wrap.
Here's a picture of the coil bracket. I mounted the coils on the underside to increase clearance between the coils and the tank.
I don't have a problem with the retained heat part of it, just the look of it because in a lot of cases it's not done well. Then again, I don't like the look of it even when it is done well, but to each their own.
What is that pipe from? And does the additional wall go all the way to the end of the header pipe? I wonder if it's only in the first few inches of the pipe near the head.
It’s from a CB350. Don’t know what year but had late style thick collars on the ends. I can cut some more and find out where it becomes 2 walled. I also have a CL pipe with muffler cut off. Single wall at the end…
That's an interesting picture. I wonder if the center of the three layers is a relatively short piece of tube to position the inner tube centrally with the outer tube? Beyond a short distance, it seems like the central tube would end and there would be an air gap between the inner and the outer tubes. I always assumed that the air gap is what stopped some of the tendency for bluing. I appreciate your exploratory surgery on that pipe.
Thanks, Richard.
Crazy to see a CB350 tank on a 360, changes the look significantly.
One of my friends in town says something to that effect every time he sees it.
Interesting, because to me the CB360 tank looks better. Maybe because I grew up looking at the later 350 tanks with dislike as they evolved from the early 350 look.
That was the PO's yard. He bought it new in Nebraska, brought it to Georgia around 1980 and never registered it there. He apparently wouldn't allow his sons to ride it and it was exposed to the elements for a good while. I pushed it out of that yard in 2014 and he gave me the title for the effort. A very nice guy. My parents lived two houses over at the time, but have since moved a few hours away.
I think your green is a fitting tribute to it's Georgia pine rebirth.
Thanks, Tom.
The pilot jets in particular have a 0.60mm cross drilling in line with modern Kei-Hin pilots. (I've had brand new not NOS jets from Kei-Hin)
I'm actually running OEM mufflers — the attached picture shows the headers I ordered. I thought about asking the seller to toss the shorties in the trash, but decided I will do that for them. =)
Thanks. I have purchased quite a bit from the those guys in Houston and include them in my comparison shopping, although 4-into-1 has become more of a go-to for me. I'll have a look both places.
They were under damped when new.
I've never used one, not sure what the capabilities are. If the weld was done right, and it looks like it, the depth of penetration might not be separated by just cutting through the weld itself. But, when you have nothing to lose, it would be worth a try.
I'll have to double check, but I think my saws-all only has two speeds: on and off.
You'll be fine either way if you just go easy and check depth.
