yet more help needed by me

thegubner · World Chat Champion Joined: 25 Mar 2007 Karma :

after identifying that GPZ 750 engine Embarassed

, im trying to get the starter motor out, I have the cover off but there is a casing that needs to come off too, its under the carbs and down the left side.

It is held in by alan key bolts, but I snapped my alan key in them the're that tight. I got a new alan key sorted and they are just TOO tight, will NOT come undone at all, rather than coming undone they are starting to round off, any ideas?

cheers in advance (yet again)
andy

mattgirv · Trackday Trickster Joined: 31 Mar 2007 Karma :

It'd be better having something gradual to apply pressure to the hex key to turn it.

If you have something longish you can fit over the end of the key to get more leverage on it then that would be good. If not perhaps try your foot gradually increasing the pressure against it.

Also spraying a bit of lubricant wouldn't go amiss, if you haven't already Wink

thegubner · World Chat Champion Joined: 25 Mar 2007 Karma :

cheers pal, i should have mentioned that I have tried those things allready, but to no avail

cheers
andy

mattgirv · Trackday Trickster Joined: 31 Mar 2007 Karma :

I guess you could try heating it up with something, if you have a blow torch or something.

Also perhaps try getting a flathead screwdriver and hitting it at an angle to the hex key bolt to see if it shocks it out. Should work to a similar degree as an impact driver does.

Finglonga · World Chat Champion Joined: 27 Jul 2004 Karma :

Allen keys are not any good for that, you need an allen socket.

Like....https://www.porsche964.co.uk/technical/images/jc/10mmallnsckt.JPG
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Andy Sez....
F.Y.Y.F.F.

thegubner · World Chat Champion Joined: 25 Mar 2007 Karma :

edd · Nearly there... Joined: 06 Jul 2005 Karma :

As Finglonga says allen sockets are your friend. What wont budge with allen keys at all often comes out with little effort using sockets. Thumbs Up

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Bluespark Automotive - Diesel Tuning for Performance and Economy

steveh · World Chat Champion Joined: 24 Aug 2004 Karma :

If they were steel you could tack weld somthing on to lever it off.

Or try an inmpact driver.

if its rounded off, perhaps cut a T in it to make it take a flat blade.

Or drill it out Sick

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Current : 06 Zx10r, 07 Wr450f SM, 74 850 norton commando, 63 bsa b40, 1962 Triton 650, 67 Triumph Tr6r, 1955 Triton 750, 1978 TY250E.

Ichy · World Chat Champion Joined: 15 Jul 2005 Karma :

Impact driver is the way to go. If the allen key is starting to spin then you could try tapping a star drive bit in the bolt. If you know someone with a welder you could try welding a old socket onto the bolt.

Chances are the bolts going to snap if its that tight, try letting it soak in plus gas or heating up to casing.

thegubner · World Chat Champion Joined: 25 Mar 2007 Karma :

Thats for the replies, but BCF member grav, has bought the lot off me now, so its up to him, he he