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drbaig |
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drbaig Crazy Courier
Joined: 24 May 2012 Karma :
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Posted: 18:22 - 20 Jun 2017 Post subject: Yeap, snapped it. |
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https://i.imgur.com/32i5uiR.jpg
It was pretty much already snapped but I thought maybe hammering a socket and turning it might work. Nope, broke off flush.
I think drilling is the only option here. Asked a few mechanics, not interested.
So it is up to me I suppose. Gonna try it with left handed drill bits. Either I will royally fuck it up even more than it already has been or it will be a monumental success.
Anything particular I should be aware of before I try drilling the bastard ? ____________________ yzf 600r |
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..... Quote Me Happy
Joined: 15 Jan 2005 Karma :
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Pete. |
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Pete. Super Spammer
Joined: 22 Aug 2006 Karma :
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Posted: 18:31 - 20 Jun 2017 Post subject: |
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Make a drilling guide.
Get a piece of flat metal 6-8mm thick. Drill it with a 6mm drill to fit over the studs on one of the other cylinders. Bolt it on using the good stud so the hole is square over the broken one. Spot the broken stud with the 6mm drill using the drill guide, then once you have a good start established drill it out with a 5mm drill. ____________________ a.k.a 'Geri'
132.9mph off and walked away. Gear is good, gear is good, gear is very very good |
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drbaig |
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drbaig Crazy Courier
Joined: 24 May 2012 Karma :
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Posted: 18:54 - 20 Jun 2017 Post subject: |
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It is weird how both middle top ones broke. But that was pretty much the reason why the exhaust was blowing.
I don't think they were studs anyway. I think they were bolts
https://i.imgur.com/6SIeFS6.jpg
I've left the other one alone now and it does have thread left. But if I can drill one out then I can drill the other.
I'll try manufacture something Pete It's a good idea. ____________________ yzf 600r |
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pompousporcup... |
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pompousporcup... World Chat Champion
Joined: 15 Apr 2015 Karma :
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Posted: 21:16 - 20 Jun 2017 Post subject: |
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on the cat the inner of the middle two cylinders are the ones that get caked in crud from the hole in the lower fairing. Mine gave up a really good fight but i managed it without snapping one... one did bend though so i count myself really lucky.
you could drill it... but if you miss or it goes off, the ali in the head is softer than you'd think it is (ask me how i know )
This is what i'd do...get a steel nut and place it over the one without thread... fill the centre of the nut with weld so that it welds the nut and whats left of the bolt together.. the heat from the welder will with a bit of luck free up the stuck bolt remains and you'l have something to get a socket onto
A diy drill alignment device'emabob would be good but i've had limited success with drilling freehand.
just my 2p
Last edited by pompousporcupine on 09:09 - 21 Jun 2017; edited 1 time in total |
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kramdra |
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kramdra World Chat Champion
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Posted: 01:15 - 21 Jun 2017 Post subject: |
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drbaig |
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drbaig Crazy Courier
Joined: 24 May 2012 Karma :
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Posted: 06:24 - 21 Jun 2017 Post subject: |
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Might be doable, but for the heat part..... ____________________ yzf 600r |
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kramdra |
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kramdra World Chat Champion
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drbaig |
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drbaig Crazy Courier
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kramdra |
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kramdra World Chat Champion
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ThatDippyTwat |
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ThatDippyTwat World Chat Champion
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drbaig |
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drbaig Crazy Courier
Joined: 24 May 2012 Karma :
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Posted: 20:16 - 24 Jun 2017 Post subject: |
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Alum solution didn't work. Meh.
Drilled one out. Was a bastard. Could not salvage thread so retap the same thread or a bigger one.
Second one following suit. Fuck all room to work with. That is also getting drilled out.
Both will have to be tapped.
Great luck eh! ____________________ yzf 600r |
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Pete. |
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Pete. Super Spammer
Joined: 22 Aug 2006 Karma :
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Posted: 20:19 - 24 Jun 2017 Post subject: |
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I have found that manifold holes can be quite variable so don't worry if the centres shift a bit. If you can restrict the over-drill to helicoil size you can whack a couple of those in, otherwise replace M6 with M8. ____________________ a.k.a 'Geri'
132.9mph off and walked away. Gear is good, gear is good, gear is very very good |
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cb1rocket |
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cb1rocket World Chat Champion
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Islander |
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Islander World Chat Champion
Joined: 05 Aug 2012 Karma :
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Posted: 22:55 - 24 Jun 2017 Post subject: |
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drbaig wrote: | Alum solution didn't work. Meh.
Drilled one out. Was a bastard. Could not salvage thread so retap the same thread or a bigger one.
Second one following suit. Fuck all room to work with. That is also getting drilled out.
Both will have to be tapped.
Great luck eh! |
Alum does work but it needs a lot more than ambient heat to do so and the heat has to be applied continuously. It also needs a bit of ingenuity to apply when the hole you're trying to clear is horizontal. |
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drbaig |
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drbaig Crazy Courier
Joined: 24 May 2012 Karma :
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Posted: 00:03 - 25 Jun 2017 Post subject: |
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Alum method needs heat and intricacy. Not easy at all where there is fuck all room the the engine is at a downward angle.
Left handed bits were no good...
The first hole is a bit shagged. 4mm bit I used and still it was not good enough. Not a big deal though. I've not completely fucked the hole so that is a saving grace.
Second went a lot better. Probably more experience after hours of drilling the first. Pretty straight, but will still needs re tapping.
All in all what a shitty job. At least it is not the infamous 2nd gear, then the bike would be going to junk yard
Lets see how re tapping works tomorrow. ____________________ yzf 600r |
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kramdra |
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kramdra World Chat Champion
Joined: 28 Oct 2010 Karma :
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drbaig |
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drbaig Crazy Courier
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Posted: 14:59 - 25 Jun 2017 Post subject: |
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Yeah, I know it works but I didn't have anyway to get heat to it. I drilled it out. Which itself is a big pain but its done now.
Drilled, tapped. The cat lives for another day. Nine lives and all.
https://i.imgur.com/XpRIgFV.jpg ____________________ yzf 600r |
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kramdra |
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kramdra World Chat Champion
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drbaig |
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drbaig Crazy Courier
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Old Thread Alert!
The last post was made 6 years, 278 days ago. Instead of replying here, would creating a new thread be more useful? |
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