So I recently purchased a Honda CB360 as my newest project with hopes of building a cafe racer ;D. So I got it as a frame and all the parts or so I thought! First things first I want to get the engine running so its only got 15,000 on it and need to be honed and what not. My major probelm is that the guy I got it from tore the engine down and put the valves, valve springs and all in ziplocs but obviously they sat with some moister so they rusted all over. I tried cleaning them up but the valves are shot. The springs were rusted but they cleaned up pretty good but I don't know if I should use them. Also I found some valves at David Silver Spares. Are aftermarket valves alright? or should I use the honda ones he offers?
Honda CB360 Motor
- Thread starter BowFin21
- Start date
Bert Jan
Holy Modification Batman
Don't want to bash you, but without pictures we can not help you. An engine with only 15.000 on the clock does not need to be honed likely, so i guess the PO (previous owner) did something to it that caused him to tear er down. (no oil, broken rings etc...) Check engine for any damage!!
You state the valves are shot. IMHO, valves are shot when they're bent or pieces broken out of it. A little surface rust is no problem, as long as you make sure the shaft is smooth and the the valve-edge has a good tight seal with the head. You might want to get the valves done by a shop. Thats a good idea anyway, as the PO probably did not write up wich valve goes in wich guide.
Aftermarket springs usually have a little more compression power, (as they're newer than the old ones wich have been compressed a gazillion times) You can however measure the springs as instructed per manual.
YOU HAVE A MANUAL DONT YOU?
Aftermarket valves from DSS are fine, but be sure you get them lapped by a shop before assembly. As you need to lap them, no matter wich ones you use, i suggest you take the head and valves to a GOOD shop and ask for advice. Or post some decent pics here so we can give you advice.
You state the valves are shot. IMHO, valves are shot when they're bent or pieces broken out of it. A little surface rust is no problem, as long as you make sure the shaft is smooth and the the valve-edge has a good tight seal with the head. You might want to get the valves done by a shop. Thats a good idea anyway, as the PO probably did not write up wich valve goes in wich guide.
Aftermarket springs usually have a little more compression power, (as they're newer than the old ones wich have been compressed a gazillion times) You can however measure the springs as instructed per manual.
YOU HAVE A MANUAL DONT YOU?
Aftermarket valves from DSS are fine, but be sure you get them lapped by a shop before assembly. As you need to lap them, no matter wich ones you use, i suggest you take the head and valves to a GOOD shop and ask for advice. Or post some decent pics here so we can give you advice.
Hey no problem, I know I should have uploaded some photos. So yeah I got the manuel, Its the shop manuel for Honda CB360. Im going to be in town next weekend so Im going to drop by a Machine shop in town thats been open for almsot 70 years and see what they say. Here are the photos though, so the rust calls for a hone as its not bad at all just surface and the valves.Im gonna tear into the engine like you said just to make sure everything is good and replace all the seals and gaskets.
Attachments
born2expire
let's talk shop
i would get the head soda blasted and snag a flex hone and hone it yourself. it's super easy with a corded or cordless drill and some oil. just look on youtube you can have it done in under 5 mins and save some money and learn something new. also some valve lapping compound and the suction cup to do it is fairly cheap as well to get the valve faces to seat properly
Alright, Ill get the head soda blasted.I still wanna take it to the shop in town and have them measure every thing and just make sure everything is good. Better to be safe than sorry. Ill lap the valves though, sounds easy save money.Other than that anyone have or know someone that would be willing to sell me a Cam tensioner for my CB360 engine?
SONICJK
Reminds me of...me No, I'm sure of it. I hate him
Read up a bit on valve lapping, it is easy but it's also easy to do too much and screw up your head.
As far as the tensioner there was a guy on here selling aftermarket ones but I don't remember who or if it ver came to fruition. Search for it.
As far as the tensioner there was a guy on here selling aftermarket ones but I don't remember who or if it ver came to fruition. Search for it.
Yeah all my valves look like that unfortunately. They were left in Ziplocs by the previous owner and moister got in. Ill probably have to buy new valves (Buy once cry once) because the valve that I have pictured is a good one, the others are worse. Other than that I'm just going to take my engine to be honed at the machine shop, when I finish college exams in the next 2 weeks. Then Ill really be able to put time into my bike. Hope to get the engine running by June. We will see how that pans out.
rockcitycafe
I make things.
I'd +1 on taking the engine to a shop, rust in the cylinders is rarely ever just "surface" rust, from what I've seen, cast iron will keep going at a good pace once it's started rusting, a flex hone isn't going to help you much either, it'll knock the rust off and keep honing the cylinder to the shape it was in with the rust (the rust area will be lower than the surrounding area), so the engine will never have good compression and will keep burning tons of oil. the valves are suspect, in that I'd be concerned they were zip locked after being removed in a rusted state, never trust what the p.o. said they did, their goal is to get rid of the bike, some will obfuscate the truth to facilitate that end. take a good look at the guides, I'd bet a nickel they've got the same rust pitting inside that the valves do...
good news is that cb360 parts are pretty cheap, if you need to bore to the next size, you can also just go ahead and bore to 378 and install gs850 pistons, which turns out to be about as cheap as boring to the next size over (used 850 pistons are cheaper than new .25 over cb360 pistons, the bore will cost more, but it washes out)
good news is that cb360 parts are pretty cheap, if you need to bore to the next size, you can also just go ahead and bore to 378 and install gs850 pistons, which turns out to be about as cheap as boring to the next size over (used 850 pistons are cheaper than new .25 over cb360 pistons, the bore will cost more, but it washes out)
Sorry for not posting in a while been busy. I got the engine completly torn down though and thank goodness i did. As I was going through the sludge in the bottom crankcase, I found part of the original cam tensioner stuck to the wall. Ill get some pics of my progress up tomorrow. Gonna go at my cases with the pressure washer and elbow grease get them cleaned up and looking pretty for paint. I also contacted the shop and set up an appointment to go down have them look at what needs to be done and get it done. Oh, I was also able to secure a tensioner and slipper!
mydlyfkryzis
当有疑问时踢你的敌人在生殖器上，你可以道歉后
Those tensioners and slippers are getting harder and harder to come by....Glad you found some.
