Fuck

[chris-red]

Putting the Four back together for the new season today, I starting tightening one of the R&G bungs which doubles as and engine mount. As soon as it got tight it cracked and became loose again, I undid it and looked and the most of the thread seems to have come out on the bolt. I didn't do it up to tight there was hardly any pressure on it. I assume a helicoil is the best bet, does anybody have any experience with this?

There are 3 other bolts holding the engine in and I have screwed the crap one in it goes about after way and given it a liberal coating of thread lock. Would it be a really bad Idea to ride it?

Anyone have any experience with this?
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Well, you know what they say. If you want to save the world, you have to push a few old ladies down the stairs.
Skudd:- Perhaps she just thinks you are a window licker and is being nice just in case she becomes another Jill Dando.
WANTED:- Fujinon (Fuji) M42 (Screw on) lenses, let me know if you have anything.

[...]

I wouldn't ride it until it's secure, but I'm a giant pansy.

[Gazdaman]

I'm sure G's R6 was very similar, and he rode that for ages.

I rode my Bandit with 2 snapped mounts for 6 months with no ill effects.

I would get it sorted though, I certainly don't recommend ignoring it for any length of time.

Gaz

[Frost]

I've yet to have a good helicoil expirence...
However i've always been able to get away with tapping to the next size up. That of course requires a new engine bolt, and some of those things are big and expensive...

[salty21]

the crash bungs on my 600rr are also engine mounts, iv'e ridden without both of them in and it was fine. There's still a mount at the front and back, what more does it want
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04 NSR 125(sold) ---- 03 CBR 600rr(sold) ----90 pan euro ST1100 '' ----02 CG 125
94 CB400 Super Four ---- 2000 VTR SP1 (sold) ---- 08 ninja p8f(sold, meh) ----05 CBR600rr

[DrDonnyBrago]

Sucks mate, personally I'd end up doing a little poo if I lost an engine mount and had to ride it. Perhaps try calling R+G and see if they can supply a bolt with a larger thread diameter (i.e. one from another bike) and have the mount tapped.

I do wonder why bike manufacturers don't have purpose built bung mounting points, seems a bit silly to have to use the thread of a critical mounting point to take the brunt of a crash. When I binned my CBR I stripped a bit of the thread from the bung mount, it was just an M8 fairing mount though so it didn't really matter too much.

[Ed Case]

MOT stations just love bikes with engine mounting bolts missing !.

[chris-red]

[G]

Indeed, I did half a racing season with the r6 missing engine mounts - well, I had them, but use superglue or something to hold them in to make it look ok for scrutineering .
Can remember at some point chucking one off into the grass at Lydden while lined up in the grid when no one was looking, as I didn't want it falling on track for the person behind me to run over.

Helicoil, timersert or similar is going to be your best bet.
Another possibility is there may be space to drill right through and have a nut on the back - if you can, I'd do that, but usually it's half-concealed.
You can also get it welded up and re-tapped, but expect that to be a load of hassle if the engine's in the bike.

[Casper]

When you say new season do you mean racing or road riding? if later grow a pair mate. It will be fine under normal riding. Order a new bold ASAP and get on with it.

[Pete.]

How deep is the tapped hole for the bolt? Could it be the thread pulled because you needed a longer bolt because of the crash bungs? I would check the current engagement depth and see what's left in there to take a longer bolt first.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Ed Case]

[woodyfjr]

Just get it heli-coiled it dont take long I would do both sides while your doing them. As for riding it Steel frame maybe Ali frame I wouldnt myself.
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If you don't pay your exorcist you can get repossessed.

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[chris-red]

[chris-red]

[chris-red]

[Pete.]

The thread must always be in a hole - top tip for you there.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[G]

Unless it's a timesert, which are solid 'inserts', so could be stuck ontop .

[Alex A]

Initially thought the bolt went straight through the frame and part of the engine and bolted on the inside (The Tuono is like this). In which case, all you'd need is a new bolt.

Is it the thread in the Engine casing?

New engine!
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Current: Ducati Panigale R / Ducati Streetfighter S / Suzuki GSX-R1000 L5

[chris-red]

[woodyfjr]

[Pol Anorl]

engine mount? pft who needs those

one of mine is done up finger tight, not too botherd as on my ns125r i had to pretty much rip the engine out with a land rover lol that engine aint coming out
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[Vincent]

[chris-red]

https://www.dexteritytraining.co.uk/Neil,London,SpeedFour.JPG

Its the forward mount goes into the head by the looks of it, please note the guy in the picture is not me

I don't think I can get to it from the back.
____________________
Well, you know what they say. If you want to save the world, you have to push a few old ladies down the stairs.
Skudd:- Perhaps she just thinks you are a window licker and is being nice just in case she becomes another Jill Dando.
WANTED:- Fujinon (Fuji) M42 (Screw on) lenses, let me know if you have anything.

[Vincent]

You mean the one halfway up the top spar? If you can't get in to re-tap / hellicoil / Timesert, you can enlargen the hole on the mount, then use a collar when sticking it back together. This will mean you can fix it without removing or tilting the engine.

Looking at the pics here, the hole is blind. Looks like a Timesert might be your best bet, although they have a collar on top to stop it being pushed into the hole - that might not fit to wel between the motor and the frame.

https://cgi.ebay.com/ebaymotors/Triumph-Speed-Four-4-ENGINE-MOTOR-VIDEOS-7674-MILES-_W0QQcmdZViewItemQQhashZitem2c58af5224QQitemZ190466445860QQptZMotorcyclesQ5fPartsQ5fAccessories