Topic: Metal Pieces In Oil

[DaveBarbier]

That bigger chunk is a shift dog that has broken off one of the gears.  It probably got jammed between something spinning and shredded some metal making the shavings.

Sounds like I'll really have to go through this thing to make sure there isn't much damage done by that dog...or b!tch may be more like it.


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1978 Honda CB550K

[DaveBarbier]

So in my naivety I thought this splitting the cases thing wasn't a huge deal. But it's a serious undertaking, am I right? I'm going to be needing a complete gasket set, new crank bearings, rotor puller, new head bolts, etc. Pistons have to be removed and pretty much the entire engine disassembled. No?


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1978 Honda CB550K

[scottly]

So in my naivety I thought this splitting the cases thing wasn't a huge deal. But it's a serious undertaking, am I right? I'm going to be needing a complete gasket set, new crank bearings, rotor puller, new head bolts, etc. Pistons have to be removed and pretty much the entire engine disassembled. No?


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1978 Honda CB550K

The motor doesn't need to be entirely disassembled to repair the trans; no need to pull the head, pistons, crank etc. 

[DaveBarbier]

Another thing to throw in the mix...my head gasket has some  oil seepage around it. Hard to tell how much it's leaking as I haven't actually ridden it too much. Does this seem like one of those "since you're in there you might as well..." scenarios?


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1978 Honda CB550K

[scottly]

Another thing to throw in the mix...my head gasket has some  oil seepage around it. Hard to tell how much it's leaking as I haven't actually ridden it too much. Does this seem like one of those "since you're in there you might as well..." scenarios?


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1978 Honda CB550K

Seems more like one of those "don't fix it if it ain't broke" scenarios to me.

[DaveBarbier]

Another thing to throw in the mix...my head gasket has some  oil seepage around it. Hard to tell how much it's leaking as I haven't actually ridden it too much. Does this seem like one of those "since you're in there you might as well..." scenarios?


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1978 Honda CB550K

Seems more like one of those "don't fix it if it ain't broke" scenarios to me.

Ha, right on. Thanks guys. I'll probably be posting questions as I go if I don't find an answer from searching.


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1978 Honda CB550K

[robvangulik]

Don't despair Dave, 4 weeks ago i had exactly the same with my daily rider CBR1000F,lost second and third gear while heading for work.
Just a little  clunk while accelerating and gone, luckily i had 4 gears left to continue,
I'll get some pics when i get out of bed, it's sundaymorning 8.30 here....

[seanbarney41]

Another thing to throw in the mix...my head gasket has some  oil seepage around it. Hard to tell how much it's leaking as I haven't actually ridden it too much. Does this seem like one of those "since you're in there you might as well..." scenarios?


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1978 Honda CB550K

I would just find a whole new engine then, these things don't rebuild all that cheap or easily.  They are not small block chevy's.

[robvangulik]

So, I'm at the PC now, not the tablet as before.
Took me 3 evenings, and a transmission I had as a spare, I ride these cbr's for more than 20 years, so I have a good stash of parts (and have been in there several times).
As you can see I left the top end alone, and apart from whatever I paid for the tranny long ago (won't be much) didn't cost any money, just (a lot of ) work.
  I can guarantee you that liquid cooled 24valve DOHC engine is a lot heavier than a CB550
But it runs again with all the gears it is supposed to have, so totally worth the trouble!

[trueblue]

Yup, trans bits from the gears. No option now but to pull it and separate the cases. Bill Benton might have a new trans he can sell you at a reasonable price.

+1 on what Cal said.  Looks to me like one of the dogs that engage the gears has parted company.  Definitely needs the cases splitting to fix.  Bet you're glad that you didn't just keep riding it now.   

[dave500]

ugg,bit of a bummer,id do the top end as far as decoking and re lap valves aswell,you can just split the bottom end though,if you take apart the entire engine plan A becomes plan B real quick,which =money.

[DaveBarbier]

Thanks robvangulik. Maybe not as bad as I thought. Different motor, I know, but still doesn't seem as bad. Learning experience to say the least.

Right now it's just finding a transmission. Out a message into one if the guys from the forum but looking on eBay I'm seeing transmissions for under $100.

Yeah, now I'm really happy I didn't just ride it. But I have no idea when this happened. I never felt anything weird and all gears were smooth. It might have happened during my little accident but it also could have been there from the PO. But this thing only has 9,000 miles on it. So far carbs were toast and transmission too.

Thanks everyone. This forum rocks. I want to buy you all beers.


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1978 Honda CB550K

[DaveBarbier]

ugg,bit of a bummer,id do the top end as far as decoking and re lap valves aswell,you can just split the bottom end though,if you take apart the entire engine plan A becomes plan B real quick,which =money.

I'll look into that, but money is an issue, haha. I'll make the decision when I get it all on the bench.


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1978 Honda CB550K