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Ayrton |
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Ayrton World Chat Champion
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ThunderGuts |
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ThunderGuts World Chat Champion
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rpsmith79 |
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rpsmith79 World Chat Champion
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Robby |
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Robby Dirty Old Man
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Ayrton |
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Ayrton World Chat Champion
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Posted: 18:07 - 04 Mar 2019 Post subject: |
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Thanks guys. I put 1l of oil in and theres room for a little more and about 1.25l came out, so it's not too bad. It's a very milky brown colour that looks the same as it does here https://www.youtube.com/watch?v=wBttgKH9ujA
I'm not sure if it's smoke or steam to be honest. It doesnt start doing it until the bike is decently warm if that matters.
I definitely changed the head gasket as I bought a whole set for the bike so I could do whatever I had to take off. There definetly is a chance I did something wrong so I will have a look inside and check that everything is as it should be. |
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Riejufixing |
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Riejufixing World Chat Champion
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Grubscrew |
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Grubscrew Scooby Slapper
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Robby |
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Robby Dirty Old Man
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Kentol750 |
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Kentol750 World Chat Champion
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Posted: 23:55 - 04 Mar 2019 Post subject: |
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____________________ Some bikes. |
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Ayrton |
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Ayrton World Chat Champion
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steve the grease |
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steve the grease Crazy Courier
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Robby |
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Robby Dirty Old Man
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rpsmith79 |
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rpsmith79 World Chat Champion
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Posted: 09:56 - 05 Mar 2019 Post subject: |
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Have you actually got documents for this bike yet, since you never actually replied in your original thread ____________________ Current Bike: Honda CG125 ES4 // Honda CB600FS Hornet // Triumph Street Triple R |
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bikenut |
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bikenut World Chat Champion
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Posted: 10:54 - 05 Mar 2019 Post subject: bike |
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the video shows what looks just like emulsified oil, water in the oil.
You have a manual and know of cmsnl for the exploded views which can only help, they show you whats there, or should be there.
You did torque the head down didnt you?
how is the thermostate?
what year is the bike, you dont say.
https://images.cmsnl.com/img/partslists/honda-cbr125r-2004-4-england-cylinder-head_bigecpp4e1e__0200_14c2.gif
this is a link to a cbr125r, which may or may not be your exact bike, find your exact bike on cmsnl and have a look see. ____________________ nuts about bikes |
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Ayrton |
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Ayrton World Chat Champion
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Posted: 20:47 - 05 Mar 2019 Post subject: |
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Ok So I think I've just made things a lot worse
Took the head cover off and torqued the camshaft holder nuts down to 29Nm, turned out there was loads of room to go so I think that was the issue.
I then set about to do what the Haynes calls "cylinder head bolts" (no 12 on https://images.cmsnl.com/img/partslists/honda-cbr125r-2004-4-england-cylinder-head_bigecpp4e1e__0200_14c2.gif). Because I cant see any spec anywhere for these I set them to 30Nm like Steve said, except it must be a different bolt he's talking about as I just snapped the end right off one of them...
https://i.imgur.com/Ip4Tema.jpg
Also the bike is a 2010 model and I do have the documents now so I know it's not been nicked like everyone thought |
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Riejufixing |
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Riejufixing World Chat Champion
Joined: 24 Jun 2018 Karma :
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Posted: 21:41 - 05 Mar 2019 Post subject: |
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Now you'll have to take it to bits.... good chance to check things out.... that's a lot of stretch in the threads. Is it an 8mm bolt?
Edit: Hm. Bolt, Flange, 6x105 Cbr125r 2004 (4) England
https://www.wtools.com.tw/STANDARD-BOLT-TIGHTENING-TORQUE.shtml
(although IT DEPENDS on what you're bolting down/together/into).
Edit: Ooops now I see it's a 2010 one not 2004.
Last edited by Riejufixing on 00:11 - 06 Mar 2019; edited 1 time in total |
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Robby |
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Robby Dirty Old Man
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Riejufixing |
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Riejufixing World Chat Champion
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rpsmith79 |
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rpsmith79 World Chat Champion
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Posted: 09:05 - 06 Mar 2019 Post subject: |
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Riejufixing wrote: | Robby wrote: | Oh my, this will be a fun thread. You just tried to put 30nm through what looks like an M5 bolt.
Just buy an engine, and get someone else to fit it. Whilst this will be excellent thread and you will be milked until dry, fixing this will cost you an awful lot of time and money. |
It seems to be M6 ISO coarse. Look at the mount of stretch in the remaining threaded portion The "new pitch" looks like about 1.5mm!!
I'd stick my neck out and say that the engine should be quite easy to salvage, if running it on mayonnaise for a few minutes hasn't shagged the mains. Even then. |
That bolt does look very odd, and i'm not sure how exactly you could stretch the thread to that extent, unless it was made of plasticine
Looks more like a self tapping thread than any machine screw i have ever seen
Even an M6 course thread has a pitch of 1.0mm, and i would suspect a head bolt would be fine pitch, which should make it 0.5mm, that look more like 2mm pitch
EDIT: Here is what it should look like, does actually look like a course thread
https://www.bikechatforums.com/download.php?id=102120 ____________________ Current Bike: Honda CG125 ES4 // Honda CB600FS Hornet // Triumph Street Triple R |
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bikenut |
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bikenut World Chat Champion
Joined: 21 Nov 2011 Karma :
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Posted: 11:39 - 06 Mar 2019 Post subject: bike |
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https://images.cmsnl.com/img/partslists/honda-cbr125rw-2010-a-englandbla-crankcase_big00028225e__1400_0b33.gif
Head studs?? Which will have nuts, domed ones probably, will be back in a moment, no not domed but they do have a washer, copper probably.
https://images.cmsnl.com/img/partslists/honda-cbr125rw-2010-a-englandbla-cylinder-head-cbr125rw7rw9rwa_big00028225e__0201_10ad.gif
you are gunna learn the hard way me thinks, first learn how to "read" the cmsnl exploded views, and the parts descriptions, then the manual, and then relate what you have learned to the bike so you don't break stuff!
Post a pic of the remains of the broken stud, the long bit and the bit that may be stuck in the engine part.
But first, find your exact bike on cmsnl and go from there, the views shown above in this thread may not be for your exact bike. FIND OUT!
https://images.cmsnl.com/img/partslists/honda-cbr125rw-2010-a-englandbla-cylinder_big00028225e__0500_2e2d.gif
At least you have a torque wrench, look up "average" torque values for 6 mm bolts, but for your particular bolt, find out the exact toque valve, don't just assume or guess.
Hows my spelling and grammer today dude, better than your mechanicing.....again sorry for the "attitude" we all had to start somewhere....... ____________________ nuts about bikes |
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Ayrton |
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Ayrton World Chat Champion
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Ayrton |
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Ayrton World Chat Champion
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Posted: 21:45 - 06 Mar 2019 Post subject: |
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So bit of a success tonight I think. Took the cylinder off to find the broken bolt just slightly sticking out of the hole. A little poking and it spun out quite nicely.
https://i.imgur.com/4YU4jM8.jpg
https://i.imgur.com/m5flfjA.jpg
Only thing that worries me is a lot of water came out of the engine when I pulled the cylinder head off. I think from the coolant passages.
Looking at the piston and cylinder I dont see any obvious damage.
https://i.imgur.com/km2Bof1.jpg
Do you guys think it's ok to put it back together with some fresh oil/ gaskets and see how it does? |
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jaffa90 |
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jaffa90 World Chat Champion
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Riejufixing |
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Riejufixing World Chat Champion
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Posted: 22:45 - 06 Mar 2019 Post subject: |
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Ayrton wrote: | Took the cylinder off to find the broken bolt just slightly sticking out of the hole. A little poking and it spun out quite nicely. |
Good, good, thought it would...
Ayrton wrote: | Only thing that worries me is a lot of water came out of the engine when I pulled the cylinder head off. I think from the coolant passages. |
Yes, that's most likely, I see droplets in the bore I think. Yes?
Ayrton wrote: | Looking at the piston and cylinder I dont see any obvious damage.
Do you guys think it's ok to put it back together with some fresh oil/ gaskets and see how it does? |
Drain all the oil out, and attend to the filter, too. Make sure you have a new head gasket, and that the head/barrel faces are perfectly clean and undamaged, and that you replace the base gasket if need be. Put it back together and torque it up to I would guess 8nm[1], make sure you're timing's right, and finish putting it together and sticking oil & water in it. I still think that if you did not go very far/fast your main bearings might be OK. Time will tell.
1) Your indicated manual says (p16): "6 mm bolt and nut (Include SH flange bolt) 10nm"
Last edited by Riejufixing on 00:32 - 07 Mar 2019; edited 1 time in total |
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Old Thread Alert!
The last post was made 5 years, 23 days ago. Instead of replying here, would creating a new thread be more useful? |
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