'74 CB 360 Cafe Build - Luna - "Done"!
- Thread starter adventurco
- Start date
mydlyfkryzis
当有疑问时踢你的敌人在生殖器上，你可以道歉后
Re: '74 CB 360 Cafe Build - Boomerang
I just left the bleeder slightly unscrewed...worked fine
I just left the bleeder slightly unscrewed...worked fine
Re: '74 CB 360 Cafe Build - Boomerang
Pads came in today. Let's get into this caliper assembly from the bottom up.
The caliper holder pin is super bound up in the holder. I was able to tap the upper piece off but the shaft itself is in there damn tight, I was able to rotate it a bit with the vice and a monkey wrench. No luck yet getting it out.
Needs to be cleaned and greased, I think I'll add a grease fitting so this doesn't happen again.
Scratched the paint
Pads came in today. Let's get into this caliper assembly from the bottom up.
The caliper holder pin is super bound up in the holder. I was able to tap the upper piece off but the shaft itself is in there damn tight, I was able to rotate it a bit with the vice and a monkey wrench. No luck yet getting it out.
Needs to be cleaned and greased, I think I'll add a grease fitting so this doesn't happen again.
Scratched the paint
Re: '74 CB 360 Cafe Build - Boomerang
Will do. Got it soaking now. Steel inside aluminum is always fun.
Ran rear brake cable last night and got everything torqued down. Had a great moment when tightening up the brake stay on the swingarm. We'll pretend this was on purpose
Will do. Got it soaking now. Steel inside aluminum is always fun.
Ran rear brake cable last night and got everything torqued down. Had a great moment when tightening up the brake stay on the swingarm. We'll pretend this was on purpose
Re: '74 CB 360 Cafe Build - Boomerang
That's the plan as soon as I get that sucker apart.
crazypj said:
That's the plan as soon as I get that sucker apart.
'74 CB 360 Cafe Build - Boomerang
'Cleaned up' the inside of the caliper. There was a bunch of build up in the bore for the rubber seal. Piston moves smoothly on the sliding surface when the seal is not in place, but with the seal in place I can barely budge it.
Seems like the seal is slightly too large. It measures OD: 45mm ID: 38mm with a wall thickness of 3.5mm. This might be an aftermarket part, maybe I should pick up an OEM honda seal.
'Cleaned up' the inside of the caliper. There was a bunch of build up in the bore for the rubber seal. Piston moves smoothly on the sliding surface when the seal is not in place, but with the seal in place I can barely budge it.
Seems like the seal is slightly too large. It measures OD: 45mm ID: 38mm with a wall thickness of 3.5mm. This might be an aftermarket part, maybe I should pick up an OEM honda seal.
crazypj
Split personality, I fake being smart
Re: '74 CB 360 Cafe Build - Boomerang
I made a shaped scraper to get into corners of seal bore, using a brass/steel wire wheel doesn't get all the way into the corners and they stay rounded.
You can see the inside edge but not the 'outer' edge. Seal should be at a slight visible angle, the 'outside' just about flush with the piston bore and the inside around 0.50mm 'high'
I made a shaped scraper to get into corners of seal bore, using a brass/steel wire wheel doesn't get all the way into the corners and they stay rounded.
You can see the inside edge but not the 'outer' edge. Seal should be at a slight visible angle, the 'outside' just about flush with the piston bore and the inside around 0.50mm 'high'
'74 CB 360 Cafe Build - Boomerang
By 'inside' I'm assuming you mean the lower part, closer to the bottom of the reservoir/bleeder opening? It's just about flush with the sliding surface (maybe 0.25mm protrusion).
How tough should it be to push the piston in there? Should I be able to slide it against the seal by hand or will I need considerable force to push it in even when working properly?
The caliper worked fine with that junk piston before I disassembled it. Not sure how it would've gotten dirtier between then and now
By 'inside' I'm assuming you mean the lower part, closer to the bottom of the reservoir/bleeder opening? It's just about flush with the sliding surface (maybe 0.25mm protrusion).
How tough should it be to push the piston in there? Should I be able to slide it against the seal by hand or will I need considerable force to push it in even when working properly?
The caliper worked fine with that junk piston before I disassembled it. Not sure how it would've gotten dirtier between then and now
Re: '74 CB 360 Cafe Build - Boomerang
Update:
I was able to get the caliper holder pin out. After a day or so of soaking, gave it about 15 seconds with the torch and with the bottom of the pin in the vice (flat part) I was able to break it free and twist it out. The pin and bore on the holder were pretty corroded. Just gotta find a grease fitting with threads that match one of the taps I have.
As for the caliper, I cleaned and re-cleaned the seal bore. Used a tiny mirror and dental tools to get in the upper corners. It's spotless. I pushed the piston in (had to use a c-clamp) and my next step is to Bench bleed the brakes and see if it functions.
I've got a funny feeling it's the seal causing me all these problems. I have an OEM honda seal on the way, but it probably won't be here til next week
Figures this is the last thing before I get her on the road
wish I bought a 360 with front drums
Update:
I was able to get the caliper holder pin out. After a day or so of soaking, gave it about 15 seconds with the torch and with the bottom of the pin in the vice (flat part) I was able to break it free and twist it out. The pin and bore on the holder were pretty corroded. Just gotta find a grease fitting with threads that match one of the taps I have.
As for the caliper, I cleaned and re-cleaned the seal bore. Used a tiny mirror and dental tools to get in the upper corners. It's spotless. I pushed the piston in (had to use a c-clamp) and my next step is to Bench bleed the brakes and see if it functions.
I've got a funny feeling it's the seal causing me all these problems. I have an OEM honda seal on the way, but it probably won't be here til next week
Figures this is the last thing before I get her on the road
wish I bought a 360 with front drums
'74 CB 360 Cafe Build - Boomerang
Caliper holder and pin cleaned up, greased, added a fitting and reinstalled. Smooth as butter. Problem one solved.
Reinstalled the front wheel. Turns out there's more than one reason it was like pushing a truck. I remember when i torqued the front wheel axle thinking the torque specs were high. I set the wrench at 45 ft•lb as per manual, but used our big torque wrench, which is always inaccurate at lower torque values. Fail. The wheel bearings were binding up, and upon loosening the axle nut, the wheel spun freely, except now the bearings are squealing like a pig.
https://vimeo.com/140519814
Wallets learning the hard way on this one.
Caliper holder and pin cleaned up, greased, added a fitting and reinstalled. Smooth as butter. Problem one solved.
Reinstalled the front wheel. Turns out there's more than one reason it was like pushing a truck. I remember when i torqued the front wheel axle thinking the torque specs were high. I set the wrench at 45 ft•lb as per manual, but used our big torque wrench, which is always inaccurate at lower torque values. Fail. The wheel bearings were binding up, and upon loosening the axle nut, the wheel spun freely, except now the bearings are squealing like a pig.
https://vimeo.com/140519814
Wallets learning the hard way on this one.
clr.R4tch3t
New Member
Re: '74 CB 360 Cafe Build - Boomerang
Awesome work on this build. Almost makes me want to use real paint on my ratty bike. hahaha I will be following this as it finishes up!
Awesome work on this build. Almost makes me want to use real paint on my ratty bike. hahaha I will be following this as it finishes up!
Re: '74 CB 360 Cafe Build - Boomerang
Ok looks like I was being dramatic on the wheel bearing. Just a rubber seal making some noise. I do still think the torque specs for the front wheel axle nut are too high, it binds up if i go upwards of 4.8 kg-m. I'll leave it at the highest torque where the wheel spins freely.
Finally got the pesky disc brake problem(s) solved. The culprit for the sticking piston was indeed the aftermarket seal. Note the small ridge in the center of the forward seal, inside and out, most likely from manufacturing. That was enough to bind the piston enough to where it would not move at all.
Only OEM parts for brakes from now on.
The new pad was also binding up like the last pad, so I ended up sanding the paint off the sliding surfaces of the pad to get it to drop in freely. A little caliper grease and voila!
Got 'em bled, adjusted the caliper and got the front wheel reinstalled.
FINALLY time for a test ride
Ok looks like I was being dramatic on the wheel bearing. Just a rubber seal making some noise. I do still think the torque specs for the front wheel axle nut are too high, it binds up if i go upwards of 4.8 kg-m. I'll leave it at the highest torque where the wheel spins freely.
Finally got the pesky disc brake problem(s) solved. The culprit for the sticking piston was indeed the aftermarket seal. Note the small ridge in the center of the forward seal, inside and out, most likely from manufacturing. That was enough to bind the piston enough to where it would not move at all.
Only OEM parts for brakes from now on.
The new pad was also binding up like the last pad, so I ended up sanding the paint off the sliding surfaces of the pad to get it to drop in freely. A little caliper grease and voila!
Got 'em bled, adjusted the caliper and got the front wheel reinstalled.
FINALLY time for a test ride
'74 CB 360 Cafe Build - Boomerang
Not so fast.
Got her all back together, bent the kickstart to clear the footpegs (and clear my legs while riding), clutch adjusted, etc.
First kick she fired right up, started to rev a bit high so I killed it. I think I had the idle speed up too high, since last time I started her up I hadn't installed the throttle cables yet.
Now she won't fire up at all. I readjusted the valves the other night at overlap, rechecked the timing today and it was all good. Getting fuel no problem.
Only thing I can think of is the battery being too low. I left the key on last night, but only the neutral LED stays on. Measured out around ~12v on the meter, so I'm going to throw it on the charger for a few hours and get it back up to peak.
I haven't changed anything since I had her running a couple weeks ago, so battery is #1 on the list.
Not so fast.
Got her all back together, bent the kickstart to clear the footpegs (and clear my legs while riding), clutch adjusted, etc.
First kick she fired right up, started to rev a bit high so I killed it. I think I had the idle speed up too high, since last time I started her up I hadn't installed the throttle cables yet.
Now she won't fire up at all. I readjusted the valves the other night at overlap, rechecked the timing today and it was all good. Getting fuel no problem.
Only thing I can think of is the battery being too low. I left the key on last night, but only the neutral LED stays on. Measured out around ~12v on the meter, so I'm going to throw it on the charger for a few hours and get it back up to peak.
I haven't changed anything since I had her running a couple weeks ago, so battery is #1 on the list.
frogman
'74 CB360, '71 CB450, '75 CB550SS
Re: '74 CB 360 Cafe Build - Boomerang
Left the key on all night? Might have cooked a coil or too, they don't like being fully charged for too long, they heat up, melt out the insulation and die... I'd verify spark.
Adjusted the valves with the engine dead cold right? If you do it when the engine is even remotely warm they will be too tight.
Left the key on all night? Might have cooked a coil or too, they don't like being fully charged for too long, they heat up, melt out the insulation and die... I'd verify spark.
Adjusted the valves with the engine dead cold right? If you do it when the engine is even remotely warm they will be too tight.
'74 CB 360 Cafe Build - Boomerang
Was thinking last night that the coils might've gotten fried, just had to replace the one in our old beetle after the key'd been left on. Hopefully not the case, I'll very spark and resistance today.
Valves were done cold, yep.
Was thinking last night that the coils might've gotten fried, just had to replace the one in our old beetle after the key'd been left on. Hopefully not the case, I'll very spark and resistance today.
Valves were done cold, yep.
'74 CB 360 Cafe Build - Boomerang
Got her firing. Looks like it was a combo of the battery being low and the idle speed set wrong. Glad the coils survived
Good news is, valves are quiet now that they've been *correctly* adjusted.
I'm still getting smoke out of the left cylinder exhaust manifold. The semi-circular collars have a little bend to them that seems to prevent them from correctly seating into the flange. Possibly from a PO incorrectly installing? Might grab new ones from Honda.
And before you say it, oil circulating to the top end OK And the smokes not coming from the rocker box
Here's a couple pics of how the exhaust seats. 2 of the 4 collars are bent like this.
Got her firing. Looks like it was a combo of the battery being low and the idle speed set wrong. Glad the coils survived
Good news is, valves are quiet now that they've been *correctly* adjusted.
I'm still getting smoke out of the left cylinder exhaust manifold. The semi-circular collars have a little bend to them that seems to prevent them from correctly seating into the flange. Possibly from a PO incorrectly installing? Might grab new ones from Honda.
And before you say it, oil circulating to the top end OK And the smokes not coming from the rocker box
Here's a couple pics of how the exhaust seats. 2 of the 4 collars are bent like this.
