'77 CJ360T (Café SOS) - Calling it Done (for now...)
- Thread starter Sonreir
- Start date
Re: '77 CJ360T (Café SOS) - Just about done (Carbs ready, timing time)!
The electrics were the part I was looking forward to the least. Turned out it wasn't so bad after all. Get yourself a decent diagram and tackle it just one thing at a time. After each new wiring run, test everything. If something stops working then you know exactly what caused it.
The electrics were the part I was looking forward to the least. Turned out it wasn't so bad after all. Get yourself a decent diagram and tackle it just one thing at a time. After each new wiring run, test everything. If something stops working then you know exactly what caused it.
drifterwanab
New Member
Re: '77 CJ360T (Café SOS) - Just about done (Carbs ready, timing time)!
Great story, great bike, well done!
MORE VIDS!
Great story, great bike, well done!
MORE VIDS!
Re: '77 CJ360T (Café SOS) - Just about done (Ready to Ride)!
OK. I FINALLY have the timing setup. I ended up taking a metal punch to the outside tabs of the advancer with the intention of tapping them for 4mm screws. This would let me limit the total advance so that I can start with high initial advance but still not exceed the stock total advance once things up to speed.
Unfortunately, that didn't work out as planned. Instead of leaving a divot in the advancer it ended up bending the tab inward. Fortunately, the end result was the same and so I went with it. My current timing is shown in the attached image. Initial timing is 25° with total advance at 38°.
The bike is ready to ride and I can start fine tuning the jetting.
I'm still waiting on some black eBay vinyl to arrive so that I can upholster the seat and I have a can of spray silicone on the way to coat the exhaust wrap.
As soon as the weather dries out a bit, I'll get a video up.
OK. I FINALLY have the timing setup. I ended up taking a metal punch to the outside tabs of the advancer with the intention of tapping them for 4mm screws. This would let me limit the total advance so that I can start with high initial advance but still not exceed the stock total advance once things up to speed.
Unfortunately, that didn't work out as planned. Instead of leaving a divot in the advancer it ended up bending the tab inward. Fortunately, the end result was the same and so I went with it. My current timing is shown in the attached image. Initial timing is 25° with total advance at 38°.
The bike is ready to ride and I can start fine tuning the jetting.
I'm still waiting on some black eBay vinyl to arrive so that I can upholster the seat and I have a can of spray silicone on the way to coat the exhaust wrap.
As soon as the weather dries out a bit, I'll get a video up.
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Re: '77 CJ360T (Café SOS) - Just about done (Ready to Ride)!
Yup. Domed pistons and the extra duration from the cam were killing my throttle response. I can probably dial it back once the rings get seated in and I get better compression, but there's very little kickback from the kick start at the moment and the bike is responding well, so I may just leave it.
On the down side, I think I have three different oil leaks I need to patch, and one of them is from the copper head gasket.
Yup. Domed pistons and the extra duration from the cam were killing my throttle response. I can probably dial it back once the rings get seated in and I get better compression, but there's very little kickback from the kick start at the moment and the bike is responding well, so I may just leave it.
On the down side, I think I have three different oil leaks I need to patch, and one of them is from the copper head gasket.
crazypj
Split personality, I fake being smart
Re: '77 CJ360T (Café SOS) - Just about done (Ready to Ride)!
Yep, head needs to come off.
At least on 360 it's real easy with engine in frame.
Should be able to do it in couple of hours and be running again
Annealing copper is pretty easy, don't overheat it though then just drop into cold water
I've done 360 gaskets on stove top hotplate then kitchen sink (just make sure wife isn't due home for several hours ;D )
Yep, head needs to come off.
At least on 360 it's real easy with engine in frame.
Should be able to do it in couple of hours and be running again
Annealing copper is pretty easy, don't overheat it though then just drop into cold water
I've done 360 gaskets on stove top hotplate then kitchen sink (just make sure wife isn't due home for several hours ;D )
Re: '77 CJ360T (Café SOS) - Just about done (Ready to Ride)!
Sometimes I feel the closer I get, the further away I actually am.
On the plus side, I think I may have been a bit hasty when I attributed my oil leak to the head gasket. It's probable that it was just oil from the rocker cover dripping down the sides of the jugs.
Anyway... I have the rocker cover off last night and (hopefully) sorted out the oil leak coming from the right-side rocker arms. I have the rest of the oil drained out of the bike right now so I can address the oil leak on the right crank case.
On the down side, I'm fighting an issue on the left cylinder. There's a number of symptoms and so I'm feeling there may be more than one problem.
First up, I was getting some misfiring from the left side even though spark (strobe verified) and compression seem good. I have the carbs off at the moment and I'm getting ready to go through them yet again and be 100% certain there is nothing blocking the pilot. The misfire only seems to occur at idle and under 1/4 throttle and so I'm putting my money on blocked pilot. We shall see... Also, maybe relevant, but when I pulled off the carbs, the back of the butterfly on the left side was covered in oily, splotchy soot. Also... I put a couple of miles onto the bike on Saturday and left side was definitely not firing. I got to where I was going and the bike sat for about 10 minutes. When I started it back up again, left side was running fine. It only seems to have problems when cold?
Like I said earlier, compression checks out OK, but my Dad got me a leak-down tester and so I'll give that a go as well. No harm in being extra diligent.
Current To Do List:
*Fix right crank case oil leak
*Sort out intermittent running and idle on left cylinder
*Go over the wiring again (I noticed front right turn signal is non-working. I suspect a short.)
*Sew up my seat once my vinyl gets here
Sometimes I feel the closer I get, the further away I actually am.
On the plus side, I think I may have been a bit hasty when I attributed my oil leak to the head gasket. It's probable that it was just oil from the rocker cover dripping down the sides of the jugs.
Anyway... I have the rocker cover off last night and (hopefully) sorted out the oil leak coming from the right-side rocker arms. I have the rest of the oil drained out of the bike right now so I can address the oil leak on the right crank case.
On the down side, I'm fighting an issue on the left cylinder. There's a number of symptoms and so I'm feeling there may be more than one problem.
First up, I was getting some misfiring from the left side even though spark (strobe verified) and compression seem good. I have the carbs off at the moment and I'm getting ready to go through them yet again and be 100% certain there is nothing blocking the pilot. The misfire only seems to occur at idle and under 1/4 throttle and so I'm putting my money on blocked pilot. We shall see... Also, maybe relevant, but when I pulled off the carbs, the back of the butterfly on the left side was covered in oily, splotchy soot. Also... I put a couple of miles onto the bike on Saturday and left side was definitely not firing. I got to where I was going and the bike sat for about 10 minutes. When I started it back up again, left side was running fine. It only seems to have problems when cold?
Like I said earlier, compression checks out OK, but my Dad got me a leak-down tester and so I'll give that a go as well. No harm in being extra diligent.
Current To Do List:
*Fix right crank case oil leak
*Sort out intermittent running and idle on left cylinder
*Go over the wiring again (I noticed front right turn signal is non-working. I suspect a short.)
*Sew up my seat once my vinyl gets here
Re: '77 CJ360T (Café SOS) - Just about done (Ready to Ride)!
Oh... and just so it's not all doom and gloom:
Those couple of miles back when both cylinder were firing was some of the finest riding I have ever experienced. It was just a normal road and speeds were less than 40 mph, but I had the biggest, stupidest grin the entire time. All this effort will definitely be worth it when I can get this thing on the road full time. Open intake, hot cam, 180° twin, and a long exhaust are my new favorite sound. Hands down.
Oh... and just so it's not all doom and gloom:
Those couple of miles back when both cylinder were firing was some of the finest riding I have ever experienced. It was just a normal road and speeds were less than 40 mph, but I had the biggest, stupidest grin the entire time. All this effort will definitely be worth it when I can get this thing on the road full time. Open intake, hot cam, 180° twin, and a long exhaust are my new favorite sound. Hands down.
crazypj
Split personality, I fake being smart
Re: '77 CJ360T (Café SOS) - Just about done (Ready to Ride)!
Yep, I've ha a lot of bikes over the years, inline 4's doing 160+, parallel twins with stump pulling torque, big singles (60+ bhp two stroke and 40+ four strokes)
Keep coming back to modified CB360's.
They are just stupid amounts of fun, the only thing close on the fun factor is a Suzuki SP370/400 (you can wheelie them all the way past vertical until you scrape tail light then bring them back onto their wheels 8) )
Yep, I've ha a lot of bikes over the years, inline 4's doing 160+, parallel twins with stump pulling torque, big singles (60+ bhp two stroke and 40+ four strokes)
Keep coming back to modified CB360's.
They are just stupid amounts of fun, the only thing close on the fun factor is a Suzuki SP370/400 (you can wheelie them all the way past vertical until you scrape tail light then bring them back onto their wheels 8) )
Re: '77 CJ360T (Café SOS) - Just about done (Ready to Ride)!
Well... I've been over my carbs another time and, fingers crossed, I think I may have found the problem. The carbs were so far out of sync that the left butterfly valve was closed all the way while the right was still open a bit. The fuel adjustment screw on the left side probably wasn't working because the butterfly was completely closed.
I bench synced them (I still don't have a proper set of manometers so I'm hoping this will do for now) and I'll put everything back together tomorrow. Hopefully I'll get some time to fire it up on Friday and see if there's any improvement.
Well... I've been over my carbs another time and, fingers crossed, I think I may have found the problem. The carbs were so far out of sync that the left butterfly valve was closed all the way while the right was still open a bit. The fuel adjustment screw on the left side probably wasn't working because the butterfly was completely closed.
I bench synced them (I still don't have a proper set of manometers so I'm hoping this will do for now) and I'll put everything back together tomorrow. Hopefully I'll get some time to fire it up on Friday and see if there's any improvement.
Re: '77 CJ360T (Café SOS) - Just about done (Ready to Ride)!
OK... everything put back together last night. I even got my exhaust wrap sprayed down with some silicone. It was too late to start things up (the kids require sleep or something like that) so I'll have to see how things go when I get home tonight. I'm just hoping it stays dry today.
OK... everything put back together last night. I even got my exhaust wrap sprayed down with some silicone. It was too late to start things up (the kids require sleep or something like that) so I'll have to see how things go when I get home tonight. I'm just hoping it stays dry today.
Re: '77 CJ360T (Café SOS) - Just about done (Ready to Ride)!
I guess the nice thing about expensive mistakes is that most folks make them only once.
I took off the rocker cover to fix one of my oil leaks and I neglected to properly position the cam and rockers arms before I tightened it down. Unfortunately, the rock armor for the left intake wasn't situated over the valve stem and was, instead, located to the inside. When I bolted everything down, the engine wouldn't turn over and it was only afterwards I realized my error. The left intake valve (and probably the guide as well) are bent fairly badly. Time to pull the head and inspect the damage done.
I guess the nice thing about expensive mistakes is that most folks make them only once.
I took off the rocker cover to fix one of my oil leaks and I neglected to properly position the cam and rockers arms before I tightened it down. Unfortunately, the rock armor for the left intake wasn't situated over the valve stem and was, instead, located to the inside. When I bolted everything down, the engine wouldn't turn over and it was only afterwards I realized my error. The left intake valve (and probably the guide as well) are bent fairly badly. Time to pull the head and inspect the damage done.
crazypj
Split personality, I fake being smart
Re: '77 CJ360T (Café SOS) - Just about done (Ready to Ride)!
You did have the valve caps off?
Either rubber bands around end of rocker or just hold them up as you lower cover
ALWAYS loosen the adjusters before you pull cam cover (you have to re-set valve clearances anyway so it's no big deal)
I used to back adjusters level with rocker arm, that way there is zero possibility of the damage you describe (Yep, I did it once, 34 yrs ago on my first inline 4 re-build)
You did have the valve caps off?
Either rubber bands around end of rocker or just hold them up as you lower cover
ALWAYS loosen the adjusters before you pull cam cover (you have to re-set valve clearances anyway so it's no big deal)
I used to back adjusters level with rocker arm, that way there is zero possibility of the damage you describe (Yep, I did it once, 34 yrs ago on my first inline 4 re-build)
Re: '77 CJ360T (Café SOS) - Head and Valve Work in Progress - Expensive Mistake
Well... I suppose it was a good thing I had to remove the head, anyway. It appears my cam chain was starting to eat into the cylinder jugs due to incorrect tensioning.
Can someone please walk me through the correct way to install the tensioner? I know I followed the procedure for tensioning it properly, and so I can only assume it was my installation that needed improvement? With the cylinder jugs in place, I just can't tell if I'm getting the tensioner in the correct spot. Slipper seems fine as it wants to stick up past the head just a bit and the bolts put tension onto it. The tensioner just seems to flop around a bit.
Well... I suppose it was a good thing I had to remove the head, anyway. It appears my cam chain was starting to eat into the cylinder jugs due to incorrect tensioning.
Can someone please walk me through the correct way to install the tensioner? I know I followed the procedure for tensioning it properly, and so I can only assume it was my installation that needed improvement? With the cylinder jugs in place, I just can't tell if I'm getting the tensioner in the correct spot. Slipper seems fine as it wants to stick up past the head just a bit and the bolts put tension onto it. The tensioner just seems to flop around a bit.
